Nanotechnology

🎯 PYQs — Nanotechnology (High Frequency)

Most Asked Topics:

• Quantum Dots and 2023 Nobel Prize
• Surface-to-volume ratio properties
• Carbon Nanotubes (CNTs) and Graphene
• Nano Urea and Nano Fertilizers

Common Traps:

• ❌ Nanotechnology is just "small stuff" (It's about tunable properties at 1-100nm)
• ❌ Carbon Nanotubes are only for strength (also highly conductive)
• ❌ OLED and QLED are the same (OLED is organic; QLED uses quantum dots)

Core Concepts

Cue Words	Notes
Define nanotechnology and explain why the 1-100 nm scale matters (surface-to-volume ratio).	Definition & Scale: Nanotechnology is the manipulation of matter at the 1–100 nanometre (nm) scale (1 nm = 10⁻⁹ m), where materials exhibit novel, size-tunable physical, chemical, and biological properties not seen in their bulk form. Surface-to-Volume Ratio: As particle size shrinks, the ratio of surface area to volume increases sharply, making nanomaterials far more chemically reactive and catalytically active per unit mass than bulk material — the key reason nanoscale properties differ from bulk properties. UPSC Trap Nanotechnology is not merely "very small stuff" — the defining feature is tunable quantum/surface effects that emerge specifically in the 1-100 nm window.
Explain how the optical properties of Cadmium Selenide (CdSe) change with scale.	Optical Properties (CdSe): Bulk Cadmium Selenide is black. As it is shrunk to the nano-scale, its color changes with size: - Red (larger nanoparticles) - Orange - Yellow - Blue (smallest nanoparticles, highest energy)

Nano Properties: Visualized

Approaches to Fabrication

Cue Words

Notes

Differentiate between Top-Down and Bottom-Up fabrication approaches in nanotechnology, providing examples.

Fabrication Approaches: Top-Down Approach: Reduces bulk material down to the nanoscale through physical or chemical processes (e.g., photolithography in semiconductor chips, mechanical milling for nanocatalysts). Bottom-Up Approach: Assembles nanostructures atom-by-atom or molecule-by-molecule, often through chemical synthesis or self-assembly (e.g., chemical vapor deposition, self-assembling monolayers).

Materials & Displays

Quantum Dots (QD) - Nobel 2023

Cue Words	Notes
Define Quantum Dots (QDs) and state who won the 2023 Nobel Prize in Chemistry for their discovery.	Quantum Dots: Zero-dimensional (0D) semiconductor nanocrystals that exhibit size-tunable optical and electronic properties due to quantum confinement. 2023 Nobel Prize: Awarded to Alexei Ekimov, Louis Brus, and Moungi Bawendi for the discovery and development of quantum dots.
How does size affect the light emission of Quantum Dots? What is the Hot-Injection Method?	Properties: Size-Dependent Color: Smaller quantum dots emit high-energy Blue light, whereas larger quantum dots emit lower-energy Red light. Hot-Injection Method: A chemical synthesis technique developed by Bawendi that allows for precise control over the size and uniformity of quantum dots during crystallization.
Identify the main applications of Quantum Dots.	Applications: High-definition television displays (QLED), medical imaging and surgical oncology (to highlight tumor cells in real-time), and high-efficiency solar cells (with potential thermodynamic limit up to 66%).

Display Technologies: LED vs OLED vs QLED

Cue Words	Notes
Compare LED, OLED, and QLED displays in terms of backlight, color performance, and efficiency.	Display Technology Comparison: Backlight Source: LED: Requires a liquid crystal display (LCD) panel backlit by light-emitting diodes. OLED: Self-emissive; each pixel is made of organic compounds that emit their own light. QLED: Uses a blue LED backlight combined with a quantum dot enhancement layer. Color & Saturation: LED: Standard brightness; limited black levels. OLED: Infinite contrast ratios and unmatched dark saturation (pixels can turn off completely). QLED: Purest colors and 100% color volume at high brightness levels. Energy Efficiency: LED: High efficiency. OLED: Moderate (higher consumption on bright screens). QLED: Very high efficiency and durability.
What are Perovskite LEDs?	Perovskite LED: An emerging display technology that combines the high color purity of QLEDs with the flexibility and self-emissiveness of OLEDs, while offering reduced sensitivity to heat and moisture degradation.

2D Materials & Goldene

Cue Words	Notes
What is Goldene?	Goldene: A recently developed two-dimensional (2D) sheet of gold that is only a single atom in thickness.

Carbon Nanostructures: Visualized

Applications in India

Agriculture & Nano Fertilizers

Cue Words	Notes
What is India's global position in nano-fertilizers? Contrast Nano Urea and Nano DAP with traditional bags.	Nano-Fertilizers in India: India is the first country globally to start commercial production of nano-fertilizers, spearheaded by IFFCO. Nano Urea: One 500ml bottle replaces a 45kg bag of traditional urea (delivering 85% nitrogen). Nano DAP: Approved in 2023; one 500ml bottle contains 8% Nitrogen and 16% Phosphorus, replacing a 50kg bag of conventional DAP.
Compare the efficiency and socioeconomic impact of nano-fertilizers with traditional fertilizers.	Efficiency & Impact: Efficiency: Nano-fertilizers achieve 90–100% utilization efficiency, compared to only 30–50% for traditional bulk fertilizers. Socioeconomic Impact: Reduces India's dependency on fertilizer imports, significantly lowers government subsidy expenditures, and prevents soil/water pollution due to nutrient leaching and eutrophication.
What is the function of Nanobiosensors in agriculture?	Nanobiosensors: Nanoscale sensors deployed to monitor soil moisture, temperature, and specific nutrient levels in real-time.

Institutions & Missions

Cue Words	Notes
What is India's Nano Mission? Identify the premier Indian center for nanotechnology research.	India's Nano Initiatives: Nano Mission (2007): The umbrella program serving as the nodal agency for promoting research, infrastructure development, and human resources in nanotechnology. CeNSE: Centre for Nano Science and Engineering, located at IISc Bengaluru; India's premier nanofabrication and characterization facility.

Environment & Industry

Environment, Industry & Nanopore Technology

Cue Words	Notes
What is Nanopore Technology and how does it function?	Nanopore Technology: A method for real-time, portable, and low-cost sequencing of DNA/RNA by measuring changes in ionic current as the molecules pass through nano-scale holes (nanopores).

Nanomedicine & Bio: Visualized

:::- India's Nano Mission was launched in 2007 under the DST, chaired by C.N.R. Rao.

• Nanopore technology uses nano-scale holes in a membrane to sequence DNA/RNA directly from biological samples in real time.
• Nano-transporters deliver drugs to a specific target site to minimize tissue damage and allow lower drug doses.
• Nanobubbles are 70-120 nanometers in size, about 2,500 times smaller than a grain of salt, with a strong negative surface charge.
• Titanium dioxide and zinc oxide nanoparticles are used in sunscreens for UV protection.
• Quantum dots are used in QLED TV displays.
• Graphene is used in green hydrogen production and flexible touch screens.
• Carbon nanotubes (CNT) are being explored to replace silicon-based computer chips.
• Gold nanoparticles (GNP) are used in solar panels and medical imaging.
• Nanophosphorous fertilizer has been developed for millet and cluster beans in India.
• IIT Indore developed triboelectric-nanogenerator-powered e-shoes (2024) that harness walking motion to power a GPS module for live location tracking.
• Researchers at CSIR-NCL and the Centre for Nano & Soft Matter Sciences (Bengaluru, 2024) developed a zirconia-based piezoelectric polymer nanocomposite for flexible energy harvesting.
• Nanomicelles are globe-shaped nanostructures with a hydrophilic outer shell and hydrophobic core, used as cancer drug-delivery carriers.
• Gold nanoparticles have a much lower melting point (about 300°C) than bulk gold (1064°C).
• Fluorescent nanodiamonds (FNDs) are carbon nanoparticles that emit low-frequency light on high-frequency excitation and are used in high-resolution imaging and gyroscopes.
• Hybrid nanoparticles (under 8 nm) combine two nanoparticle types to enable cancer diagnosis via the photoacoustic effect and therapy via the photothermal effect.
• IIT Madras researchers found that charged water microdroplets can convert minerals into nanoparticles, offering clues to the origin of life.
• Carbon nanotubes are cylindrical hollow structures made of graphite sheets, known for being lightweight with high tensile strength. I'll read the specified section of the notes file and convert every Nanotechnology / AI / ML / GenAI / blockchain detail into VitePress + Cornell Notes format with zero loss.I'll check existing Cornell Notes patterns in the project so the conversion matches the house style.I'll inspect existing S&T Cornell notes and a conversion sample to match the exact VitePress structure.Checking for an existing CORNELL conversion of this S&T material so the format stays consistent.Writing the zero-loss Cornell conversion to a file, then presenting only the clean markdown.# Nanotechnology, AI & Governance, ML/GenAI/LLMs, Deepfakes, XR, Blockchain & Strategic Crypto Reserve

Zero-loss Cornell conversion from NOTES_FILE.md (lines 823–1372). MDT content (801–821) excluded per topic scope.

---

3. Nanotechnology

3. Nanotechnology — Definition, Applications, Advantages & Challenges

Nanotechnology Core
Cue Words	Notes
Define nanotechnology and its scale of operation.	Definition & Scale: Nanotechnology deals with manipulation of matter at the 1–100 nm scale, enabling control at atomic and molecular levels.
List sector-wise applications of nanotechnology (agriculture to space).	Applications of Nanotechnology: Agriculture: Nano urea, nanosensors for precision farming, nano-processing for crop quality. Example: Nano Urea for fertilizer delivery. Food Industry: Nano-barriers for freshness; Nano-encapsulation for vitamins & omega acids; Nanobarcodes for traceability. Health: Nanoparticles for drug delivery; Quantum dots for imaging; Nano biosensors (Lab on chip), etc. Textiles: Silver nanoparticles for odor-free fabrics; nanosilica coatings for stain resistance. Electronics: Nanomaterials in transistors, sensors, semiconductors for miniaturization. Environment: TiO2 nanoparticles for water/air purification; nanomaterials enhance solar efficiency. Space: Nano coatings for temperature regulation; lightweight solar sails (NanoSail-D2).
What are the main advantages of nanotechnology?	Advantages: Stronger, flexible materials (Carbon nanotubes). Energy efficiency in devices. Targeted drug delivery, cleaner water & air.
What challenges constrain nanotechnology deployment?	Challenges: Health & Environmental risks due to nanoparticle exposure. Ethical issues: Privacy & equitable access. Unknown long-term risks, manufacturing hazards. High cost, lack of detection methods, and skilled manpower.

3A. Indigenization of Nanotechnology — Government Initiatives

Indigenization of Nanotechnology
Cue Words	Notes
Outline India's government initiatives and indigenous nanotech efforts.	Government Initiatives & Indigenous Capacity: Nano Science & Tech Initiative (2001). Research: Carbon nanotube filters (BHU); nano-based typhoid kits. Startups: Nanoshel for aerospace & automotive products. Agriculture: Nanofertilizers, nanosensors. Energy: Tata Chemicals' nanotech-based energy storage systems.

3B. Nanotechnology in Agriculture — Applications, Challenges & Initiatives

Nanotechnology in Agriculture
Cue Words	Notes
Detail applications of nanotechnology in agriculture (fertilizers to seed priming).	Applications: Nano Fertilizers: Controlled release via nanocapsules (e.g., Nano urea by IFFCO). Nano Pesticides: Better solubility & targeted delivery (e.g., Copper nanoparticles). Nano Sensors: Detect soil quality & pathogens (e.g., CNT-based ethylene sensors). Smart Delivery Systems: Nanoporous zeolites & carbon nanotubes deliver agrochemicals & genes. Antimicrobial Coatings: Silver nanoparticles prevent microbial buildup on farm equipment. Diagnostics: Gold nanoparticle biosensors detect crop viruses quickly. Seed Germination: Nano priming with zinc, TiO2 improves growth; nano-coatings delay fruit ripening.
What are the key challenges of nanotechnology in agriculture?	Key Challenges of Nanotechnology in Agriculture: Toxicity Issues: Impact on soil, microbes, and health needs lifecycle analysis; risk of contamination of soil and groundwater. Financial Constraints: High R&D and specialized systems make it costly for small firms. Production Challenges: Most nanomaterials produced only on lab-scale. Regulatory Roadblocks: Lack of standardized safety data and clear regulations delay commercialization. Skills Deficit: Need for expertise bridging nanoscience, agriculture, and food technology.
List government initiatives on nanotechnology in agriculture (Nano Mission, ICAR, IFFCO, IARI).	Government Initiatives on Nanotechnology in Agriculture: Nano Mission: Centers like CeNSE at IISc develop nanofertilizers and packaging. ICAR Initiatives: Nanotechnology centers at IARI & IVRI for nano-biosensors, pesticides, and nutrient capsules. Nano Urea: IFFCO pioneered nano urea and DAP, sprayed on plants to prevent soil damage. Nano-fertilizers: IARI made zinc, chitosan, and silica nanoparticles for better crop yield.

3C. Nanotechnology in Health (UPSC 2020) — Applications, Challenges & Way Forward

Nanotechnology in Health
Cue Words	Notes
Summarize India's nanotech-based healthcare advances and diagnostic/drug-delivery applications.	Context (2024–25): India advanced nanotech-based healthcare in 2024–25 for drug delivery, cancer therapy, and diagnostics like liposomal nanoparticles, aiding affordable precision medicine. Applications of Nanotechnology in Health and Medicine: Diagnostics: Quantum dots & nanocrystals enable early disease detection. Example: Gold nanoparticles in rapid COVID-19 tests. Drug Delivery: Nano-liposomes deliver drugs to cancer cells, reducing side effects. Example: Abraxane for breast/lung cancer. Smart pills & nanorobots for real-time monitoring & surgery at cellular level. Regenerative Medicine: Nanotech scaffolds mimic tissues for repair. Pharmaceuticals: Nanoparticles enhance solubility, stability & bioavailability. Example: Nanocurcumin for anti-inflammatory therapy. Nanofibres: Used in wound dressings, surgical textiles, implants, and smart bandages.
What are the challenges of nanomedicine?	Challenges of Nanomedicine: Biocompatibility: Risk of toxicity and immune reactions. Targeting Accuracy: Difficulty in hitting only diseased cells. Bioaccumulation: Nanoparticles accumulate in organs; long-term effects unknown. Interference: Some nanoparticles alter immune function. Cost Barriers: High production costs limit access and coverage.
What is the way forward for nanomedicine?	Way Forward: R&D Investment: Address scalability and toxicity concerns. Collaboration: Academia-industry partnerships to drive innovation. Regulatory Framework: Safety guidelines for commercialization. Private Sector Incentives: Support production and commercialization. Monitoring: Assess environmental and socio-economic impacts.

---

4. Awareness in the Field of Computers and Robotic Technology

4A. Fourth Industrial Revolution (IR 4.0) — Definition & Features

Fourth Industrial Revolution
Cue Words	Notes
Define the Fourth Industrial Revolution (IR 4.0 / FIR).	Definition: Next phase of digitization driven by AI, IoT, robotics, big data, and cyber-physical systems, merging digital, physical, and biological domains.
List the key features of the Fourth Industrial Revolution.	Features of FIR: Technological Convergence: Integration of AI, robotics, IoT, quantum computing. Digitization of Economy: Widespread digital services like UPI, Paytm. Automation: AI-driven task automation in sectors like automobile assembly. New Business Models: Digital platforms disrupt traditional markets (e.g., Netflix). Enhanced Connectivity: Internet and mobile use improving global interactions. Smart Manufacturing: Cyber-physical systems in factories enable real-time decision-making.

4B. Artificial Intelligence — Definition, Benefits, Issues, Way Forward & International Efforts

Artificial Intelligence
Cue Words	Notes
Define Artificial Intelligence.	Definition: Machines performing cognitive tasks—thinking, learning, problem-solving, decision-making.
What are the major benefits of AI (GDP, India growth, productivity, jobs, governance)?	Benefits of AI: Global GDP Growth: Projected $15.7 trillion boost by 2030. Economic Impact: AI can raise India's growth by 1.3% annually (NITI Aayog). Productivity: MIT study shows 14% increase. Job Creation: Growth in data science and related fields. Governance: AI in PMFBY for crop yield optimization.
What issues are associated with AI?	Issues Associated with AI: Labour Replacement: Routine and creative jobs automated. AI Bias: Risk of discrimination due to biased datasets. Social Manipulation: Algorithms spreading misinformation. Unintended Consequences: Complex systems causing unexpected harm. Ethical Concerns: Conflicts with Kantian principles of autonomy; increase inequality and power divide.
What is the way forward for responsible AI development?	Way Forward: Develop ethical AI frameworks (e.g., NITI Aayog's Responsible AI). Promote skilling/reskilling to counter job losses. Ensure transparent algorithms and data diversity to reduce bias. Strengthen regulations for AI accountability and privacy.
List key international efforts on AI ethics and regulation.	International Efforts: UNESCO AI Ethics Recommendation (2021): Global standard for ethical AI. OECD AI Principles: Promote inclusive, human-centered AI. EU AI Act (2024): First legal framework to regulate high-risk AI. Global Partnership on AI (GPAI): India is a founding member; promotes responsible AI use.

4C. Governance with AI — India's Transformation, Initiatives, Challenges & Way Forward

Governance with Artificial Intelligence
Cue Words	Notes
How is AI transforming Indian governance (DPI and applications)?	India's AI-Driven Governance Transformation: Digital Public Infrastructure (DPI): Aadhaar, UPI, CoWIN, e-Sanjeevani, DigiYatra. Data-Driven Policies: Example — Welfare fund allocation ₹2.73 lakh crore. Automation: GSTN uses AI for fraud detection. Citizen Services: MyGov chatbot offers scheme suggestions. Predictive Analytics: IMD uses AI for cyclone warnings. Monitoring: PMAY dashboards track housing targets. Language Translation: eSanjeevani enables multilingual health consultations.
List India's initiatives for developing AI.	India's Initiatives for Developing AI: NITI Aayog: National AI Strategy. ICTAI Conference. AIRAWAT: AI-specific cloud infrastructure. GPAI: India joined global AI partnership in 2020. INDIA AI Mission: Knowledge portal for AI ecosystem collaborations.
What are the challenges in AI-led governance?	Challenges in AI-led Governance: Data Privacy & Security: Aadhaar leaks show vulnerability. Digital Divide: Rural internet penetration ~37% (TRAI, 2023). Skill Gap: Low digital literacy among officials hampers AI adoption. High Cost: Smart City AI systems require major investments. Ethical Concerns — Bias & Discrimination: Facial recognition misidentifies minorities. Accountability: AI “black boxes” lack clarity on responsibility. Job Displacement: Automation may replace jobs.
What is the way forward for AI-led governance?	Way Forward: Secure Data Systems: Strong governance & encryption. Reskilling: FutureSkills PRIME for AI training. Updated Cyber Laws: Address AI risks & accountability. Inclusive AI: Expand digital infra in rural areas. REAIM Recommendations: International norms for ethical AI in defense, transparency, privacy protection.

4D. India-AI Impact Summit 2026 — Outcomes, MANAV Vision, Significance, Challenges & Way Forward

India-AI Impact Summit 2026
Cue Words	Notes
What was the context and paradigm shift at the India-AI Impact Summit 2026?	Context: The India-AI Impact Summit 2026 held in New Delhi marked a shift from the global "Safety-First" AI approach to an "Impact-First" developmental model. It highlighted India's vision of AI as a Global Public Good, similar to UPI and Aadhaar.
List the key outcomes of the India-AI Impact Summit 2026.	Key Outcomes: New Delhi Declaration: Endorsed by 89 countries and international organisations, emphasizing democratization of AI, affordable connectivity, digital infrastructure, and inclusive access. Charter for Democratic Diffusion of AI: Promotes open-source AI, local innovation, and equitable access to foundational resources. Global AI Commons: Collaborative platform for sharing successful AI models, benchmarks, datasets, and best practices. AI in Science & Social Empowerment: Focus on AI-driven research, healthcare, education, and public service delivery. Human Capital Development: Voluntary principles for reskilling, workforce transition, and AI-ready governance.
Explain India's AI Governance Vision via the MANAV framework.	India's AI Governance Vision — MANAV (PM Modi's Human-Centric Blueprint): M – Moral Systems: Ethical AI guardrails. A – Accountable Governance: Algorithmic transparency and audits. N – National Sovereignty: Data sovereignty and local governance. A – Accessible & Inclusive: Linguistic justice through support for all 22 official languages. V – Valid & Legitimate: Watermarking and proof of origin for AI content.
What is the strategic and economic significance of India's AI stance at the summit?	Strategic and Economic Significance: India rejected the U.S.-centric “American AI Stack” and promoted a sovereign AI ecosystem. Launch of Sarvam-1B, India's first sovereign foundational AI model optimized for Indian languages. Commitments worth $20 billion for AI infrastructure and deep-tech ecosystem. India joined the Pax Silica Coalition, strengthening semiconductor and chip supply chains.
What challenges remain after the India-AI Impact Summit 2026?	Challenges: Non-binding Commitments: Risk of weak implementation of summit declarations. Infrastructure Deficit: India lacks sufficient HPCs, AI-ready data centres, and compute power. Societal Risks: Deepfakes, misinformation, privacy concerns, and algorithmic bias threaten democracy and trust. Labour Disruption: AI may impact employment and require large-scale reskilling.
What is the way forward post-summit?	Way Forward: Develop Digital Nutrition Labels and watermarking standards for AI-generated content. Promote AI literacy in schools and public institutions. Expand green-energy-powered AI infrastructure and establish an International AI Secretariat for long-term global cooperation.

4E. Artificial Intelligence in Healthcare (UPSC 2023) — Initiatives, Concerns & Synthesis

AI in Healthcare
Cue Words	Notes
What global and Indian initiatives apply AI in healthcare?	WHO: Launched S.A.R.A.H., an AI tool for digital health promotion. India Initiatives: iOncology.ai: AIIMS-C-DAC tool for cancer detection. ICTAI: AI rural health solutions by Maharashtra Govt & NITI Aayog. ICMR: Ethical guidelines for AI in biomedical research.
What are the key concerns in healthcare AI?	Concerns in Healthcare AI: Data Privacy Risks due to large datasets. Algorithmic Bias: Discriminatory outcomes possible. Black Box Nature: Opaque AI decisions. Accountability Gaps: No clarity in liability during errors. Cost Barriers: AI healthcare remains expensive for rural areas. Job Loss Fears: Automation replacing roles in diagnostics/admin.
Synthesize the promise and prerequisites of AI in healthcare.	Synthesis: AI in healthcare enables accurate diagnostics, personalized medicine, and efficiency, but needs strong regulation, ethical use, and inclusivity.

4F. Machine Learning (ML) — Definition, Working, Applications & Ethical Issues

Machine Learning
Cue Words	Notes
Define Machine Learning and explain how it works.	Definition: Enables systems to learn from data without explicit programming; ideal for tasks like speech/image recognition. How It Works: Data trains models (often ANNs). Steps: Training → Testing → Prediction.
List key applications of Machine Learning.	Applications: Science: Higgs boson discovery. NLP: Chatbots, speech-to-text. Computer Vision: Face ID, medical imaging, autonomous cars.
What are the challenges and ethical issues in ML?	Challenges and Ethical Issues: Explainability: AI often works as “black boxes.” Accountability: Responsibility for AI outcomes unclear. Bias: Models reflect human prejudice in data. Other Risks: Privacy breaches, misuse, misinformation.

4G. Generative AI and Large Language Models (LLMs) — Applications, Importance, Challenges & Way Forward

Generative AI and LLMs
Cue Words	Notes
Define Generative AI and list its applications.	Generative AI: Creates new media (text, images, video) using ML techniques like LLMs, neural translation, and reinforcement learning. Applications: Content Creation: Text, code generation (GPT-4, Gemini). Media & Design: DALL-E for image synthesis. Healthcare: Drug discovery, image interpretation. Education: AI tutors and adaptive learning. Marketing: Personalized content, chatbots. Simulation: Virtual training for aviation, medicine, military.
Define Large Language Models (LLMs) and state their importance.	Definition: AI models trained on massive text datasets to perform NLP and NLG tasks. Importance of LLMs: Generating Human-like Content: Trained on massive datasets to mimic human text. Augmenting Creativity: LLMs read, write, code, and enhance productivity. Language Translation: Breaks linguistic barriers for global communication. Efficiency: Handles monotonous/labor-intensive tasks effectively. Prompts: Generates articles/books from simple text prompts; works on prompts without extra programming.
What are the challenges of LLMs and the way forward?	Challenges: Bias & Misinformation: LLMs can reflect societal biases and generate false content. Data Privacy: Training on sensitive or copyrighted data raises ethical concerns. Compute & Energy Needs: High resource consumption affects sustainability. Job Displacement: May impact employment in content and support roles. Way Forward: Ensure ethical training, transparency, and fairness in LLMs through strong regulation. Promote energy-efficient models and human-AI collaboration to mitigate risks.

4H. Deep Learning — Neural Network Types, Challenges with LLMs/AI & Way Forward

Deep Learning
Cue Words	Notes
Define Deep Learning and classify types of neural networks.	Definition: Machine learning using Artificial Neural Networks (ANNs) to decode complex patterns. Types of Neural Networks: Shallow Networks: One layer, simple patterns. Deep Networks: Multiple layers, complex pattern recognition. CNNs: For image recognition (spatial relations). RNNs: Sequence modeling for predicting next elements.
What challenges do LLMs & AI face, and what is the way forward?	Challenges with LLMs & AI: High Infra Cost: Needs advanced hardware & technical skills. Large Data Needs: Training requires massive datasets. Bias & Cultural Gaps: Risk of race/gender bias; English dominance limits Indian language reach. Skill Shortage: Lack of experts in deep learning & transformers. Way Forward: Ethics & Transparency: Reduce bias, ensure accountability. Responsible Deployment: Human oversight in all uses. Skill Development: Train workforce for AI models. India-specific LLM: Tailored to Indian languages for inclusivity.

4I. Deep Fakes — Definition, Impact & Solutions

Deep Fakes
Cue Words	Notes
Define deepfakes and distinguish them from shallow fakes.	Definition: Deep Fakes: AI-generated hyper-realistic media (video, audio, images). Shallow Fakes: Basic edits using simple tools like Photoshop, not AI-driven.
What is the impact of deepfakes on society and security?	Impact: Pornography: 96% deepfakes are pornographic; target women (e.g., Bollywood actress case). Character Assassination: False portrayals damaging reputation. Erosion of Trust: Undermines credibility of traditional media. National Security Threat: Used by hostile states or non-state actors to incite unrest. Liar's Dividend: Genuine info dismissed as fake.
How can deepfakes be combated?	Solutions to Combat Deepfakes: To combat disinformation, promote media literacy among citizens and encourage individual responsibility in verifying content. Establish collaborative regulations involving government, industry, and civil society, alongside a dedicated R&D body like DARPA for deepfake detection and tech-driven authentication tools.

4J. Extended Reality (XR) — AR vs VR vs MR, Market & Benefits

Extended Reality
Cue Words	Notes
Define XR and state India's animation/XR market outlook.	Definition: XR is an umbrella term for tech blending physical & digital worlds. Includes Augmented Reality (AR), Mixed Reality (MR), Virtual Reality (VR), and future immersive tech along the virtuality continuum. India's Animation Market: Valued at USD 2.4B (2024), expected to reach USD 14.69B by 2030 (CAGR 35.04%).
Compare AR, VR, and MR across definition, real-world interaction, devices, and use cases.	AR vs VR vs MR: Definition: AR: Overlays digital content on the real world. VR: Creates a fully immersive virtual environment. MR: Creates a virtual environment combined with the real world. Interaction with Real World: AR: Enhances real-world environment. VR: Isolates users from the real world. MR: Enhances real-world experience. Devices: AR: Smartphones, tablets, smart glasses, heads-up displays. VR: Dedicated VR headsets (Oculus Rift, HTC Vive). MR: Microsoft HoloLens, Heads-up display (HUD), MR glasses. Use Cases: AR: Navigation, retail, healthcare, education. VR: Gaming, simulations, training, virtual experiences. MR: Gaming, remote work, education, healthcare.
What are the benefits of Extended Reality?	Benefits of Extended Reality: Enhanced User Experience: Enables interaction with virtual objects as if real. Education & Training: Provides realistic simulations. Example: Microsoft HoloLens for anatomy, chemistry. Manufacturing: Allows virtual product visualization and testing. Marketing: Creates cost-effective, immersive consumer experiences. Healthcare: XR-powered vision aids surgeons to view internal anatomy during surgery.

4K. Blockchain Technology — Features, Significance, Initiatives, Challenges, Vishvasya BaaS

Blockchain Technology
Cue Words	Notes
Define blockchain and list its features, significance, and applications.	Definition: Stores transactions in linked blocks forming a digital ledger on a P2P network. Features: Decentralization, transparency, anonymity, eliminating third-party need. Significance: Decentralized validation, fraud prevention, and transparency. Global Relevance: 10% of GDP on blockchain by 2025 (WEF). Applications: Education, governance, banking, cybersecurity, power sector.
List Indian and global initiatives to promote blockchain.	Initiatives to Promote Blockchain in India: National Strategy on Blockchain, Centre of Excellence, FutureSkills PRIME. Global Initiatives: WEF Presidio Principles, IBM Blockchain World Wire, GBBC.
What are the challenges of blockchain and the way forward?	Challenges of Blockchain: Scalability: Bitcoin handles ~7 TPS. Energy Use: High in Proof-of-Work (PoW) systems. Interoperability: Networks like Bitcoin and Ethereum incompatible. Privacy & Security Risks. Regulatory Uncertainty limiting adoption. Way Forward: Shift to Proof-of-Authority (PoA) for energy efficiency. Improve interoperability, cryptography, and standardization.
Explain Vishvasya — National Blockchain Technology Stack and significance of BaaS.	Vishvasya: National Blockchain Technology Stack: Aim: Blockchain-as-a-Service for diverse sectors. Key Components: NBFLite: Sandbox for startups and research. Praamaanik: Verifies mobile app authenticity. National Blockchain Portal: Resource hub for blockchain services. Significance of BaaS: Builds trust with distributed architecture. Solves adoption challenges for stakeholders. Provides security assurance for blockchain components.

4L. Strategic Cryptocurrency Reserve (SCR) — Definition, Pros, Cons & Way Forward for India

Strategic Cryptocurrency Reserve
Cue Words	Notes
What is a Strategic Cryptocurrency Reserve and what is cryptocurrency?	Context: U.S. to build Bitcoin & Cryptocurrency Reserve to strengthen financial sovereignty. What is Cryptocurrency? Digital currency secured by cryptography on decentralized blockchains. Examples: Bitcoin, Ethereum, Ripple, Cardano. Purpose of SCR: Promote economic resilience, tech leadership, financial sovereignty.
What are the arguments in favour of a Strategic Crypto Reserve for India?	Arguments in Favour of a Strategic Crypto Reserve for India: Diversification: Low correlation with traditional assets reduces risk. Hedge Currency: Protects against dollar volatility, sanctions, ensures autonomy. Lower Remittance Costs: Reduces fees from ~6.4% to <1%, saving billions. Technological Leadership: Leverages India's IT talent for DeFi solutions. High Returns: Bitcoin grew 200X in a decade vs Apple (10X), Nvidia (50X). Financial Sovereignty: Reduces reliance on SWIFT.
What are the arguments against a Strategic Crypto Reserve?	Arguments Against Strategic Crypto Reserve: High Volatility: Bitcoin fell from $70,000 to <$63,000 in 24 hrs (Apr 2024). RBI's Concern: Prefers CBDC over private crypto. Regulatory Uncertainty: No clear legal framework. Cybersecurity Threats: Hacks like Bybit $1.5B theft (Feb 2025). Environmental Issues: PoW mining contradicts climate goals.
What is the way forward for India on Strategic Crypto Reserve?	Way Forward for India: Allocate 1–2% of forex reserves for risk-managed crypto exposure, backed by strong cybersecurity, use-case focus (payments, remittances, DeFi), and a regulatory model inspired by Singapore and Japan.

The requested range doesn't contain biotech/nano material — searching the notes file for those topics.Lines 451–954 of NOTES_FILE.md are IR/UN content, not biotech/nano. Pulling the source sections that match your topics and the existing Cornell format.Confirming: biotech matches S&T OCR lines 451–954; pulling CNT/Graphene/Nano Urea detail for a zero-loss conversion.Source lines 451–954 of NOTES_FILE.md are IR; the biotech block matching those topics is in the S&T OCR (≈451–954). Converting that biotech range plus nanotech (CNTs, Graphene, Nano Urea/DAP) into VitePress Cornell format.Writing the zero-loss Cornell conversion now.# Biotechnology & Nanotechnology

Zero-loss Cornell conversion: Biotechnology (Genome India, CRISPR-Cas9, GM Crops, CAR-T NexCAR19, BioE3) & Nanotechnology (CNTs, Graphene, Nano Urea/DAP). Source: S&T current affairs OCR (biotech block ~L306–954; nanotech ~L4759–4846, Graphene desalination ~L5209) + Shivin S&T nano basics.

---

1. Biotechnology

1A. Gene Editing & CRISPR-Cas9 — Definition, Mechanism, Types & Techniques

Gene Editing & CRISPR-Cas9
Cue Words	Notes
What is the recent gene-edited sheep news (CRISPR-Cas9)?	Why in the News: India’s first gene-edited sheep produced by researchers from Kashmir University in collaboration with ICAR using CRISPR-Cas9 technology. Myostatin gene in a lamb was edited, boosting muscle growth by 30% (a trait found in some European breeds such as the Texel, but absent in Indian breeds). No foreign DNA was added, making it different from transgenic animals.
Define gene editing (genome editing) and how it works.	About Gene Editing (or Genome Editing): A technology that can change DNA sequences at one or more points in the strand. How Gene Editing Works: A cell is transfected with an enzyme complex containing a guide molecule and a DNA-cutting enzyme. A specially designed synthetic guide molecule finds the target DNA strand. An enzyme cuts off the target (defective) DNA strand. The defective DNA strand is replaced with a healthy copy. It also involves removing or changing a single base or inserting a new gene altogether.
Differentiate somatic vs germline genome editing.	Types of Gene Editing: Somatic genome editing: Alteration of cells that do not contribute to gamete formation and thus cannot be passed on from the individual to offspring. Germline genome editing: Genetic modification of reproductive cells or embryos that creates changes which can potentially be passed down to future generations.
List major gene-editing techniques including CRISPR/Cas9.	Techniques used: ZFNs (Zinc Finger Nucleases): Cuts DNA at precise locations. TALENs (Transcription Activator-Like Effector Nucleases): Cuts DNA at precise locations. CRISPR/Cas9 (Clustered Regularly Interspaced Short Palindromic Repeats / Cas9): Uses a small piece of RNA to guide the Cas9 “cutting” protein to the exact spot in the DNA. Homing Endonucleases (Meganucleases): Natural enzymes that can find and cut long sections of DNA.
What are the applications of gene editing?	Applications of Gene Editing: Medical & Healthcare: Treatment of Genetic Disorders (e.g., Sickle Cell Anaemia). Cancer Therapy: Editing immune cells (CAR-T therapy) to target cancer cells. Agricultural: Crop Improvement (higher yield varieties, drought-tolerant crops, etc.); enhancing nutritional composition of crops, etc. Industrial & Environmental: Biofuels: Engineering microbes for efficient bioethanol and biodiesel production. Bioremediation: Microbes edited to clean oil spills and heavy metals.

1B. BIRSA-101, Sickle Cell Disease, GlowCas9 & Epigenome Editing

BIRSA-101, SCD, GlowCas9 & Epigenome Editing
Cue Words	Notes
What is BIRSA-101 and who developed it?	BIRSA-101: India launched its 1st indigenous CRISPR-based gene editing therapy called BIRSA-101 for Sickle Cell Disease (SCD). A technology transfer agreement has been signed between CSIR-IGIB and Serum Institute of India which aims to enable scalable, affordable enFnCas9 CRISPR-based therapies for SCD and other genetic disorders. Developed by CSIR-Institute of Genomics & Integrative Biology (IGIB). Named BIRSA-101 as it has been dedicated to Bhagwan Birsa Munda on his 150th birth anniversary.
Define Sickle Cell Disease — mechanism, impact, India data and target.	Sickle Cell Disease (SCD): Definition: Hereditary blood disorder caused by a mutation in the haemoglobin gene. Mechanism: Leads to sickle-shaped red blood cells that block blood vessels and reduce oxygen delivery to tissues. Impact: Causes anaemia and may damage lungs, heart, kidneys, eyes, bones, and brain. India accounts for ~14.5% of global SCD births (2023). It is mainly prevalent among tribals. Target: India aims to eliminate it by 2047.
What is GlowCas9?	GlowCas9: Scientists from Kolkata-based Bose Institute, an autonomous institute under the Department of Science and Technology (DST), have developed GlowCas9. It is a CRISPR protein that lights up while performing gene editing. It emits light because it is fused with nano-luciferase fragments from deep-sea shrimp, which reassemble and emit light when the Cas9 protein folds correctly.
What is epigenome editing and how does it differ from traditional gene editing?	Epigenome Editing: It regulates gene expression by modifying the epigenome without changing the DNA sequence. Epigenome consists of chemical compounds that modify, or mark, that regulate gene expression. Unlike traditional gene editing methods that involve cutting DNA, epigenome editing allows for precise control over gene expression (with reversible changes), making it a safer alternative.

1C. GM Crops — Definition, Status in India, Regulation & SDN

GM Crops
Cue Words	Notes
Why are GM crops in the news and what are they?	Why in the News: NITI Aayog Member called for adopting GM Crops for Self-Sufficiency in Edible Oils. About GM Crops: GM Crops are Genetically Modified Organisms (GMOs), i.e. their genetic material (DNA) has been altered artificially for desirable features like robustness, pest resistance, among others. Transgenics are a subset of GMO where one or more DNA sequences from another species have been introduced artificially. E.g., Bt Cotton — contains a gene from a bacterium.
What is the adoption status of GM crops in India?	Adoption Status in India: Bt cotton is the only GM crop approved for cultivation. Bt-Brinjal: Cleared by GEAC for commercial cultivation, but put on a moratorium. The Centre conditionally approved herbicide-tolerant GM mustard (DMH-11) for release into the environment; however, this approval is currently under review by the Supreme Court.
Outline the regulatory framework of GM crops in India.	Regulatory Framework of GM Crops in India: Food Safety and Standards Act, 2006: Prohibits import, manufacture, use, or sale of GM food without FSSAI’s approval. Review Committee on Genetic Manipulation (RCGM): Under the Department of Biotechnology (DBT); monitors various aspects of R&D projects involving GM organisms. State Biotechnology Coordination Committee (SBCC): Reviews the safety and control measures in various institutions handling Genetically Modified Organisms (GMOs). District Level Committee (DLC): Inspects, investigates, and reports to the SBCC or the GEAC about compliance.
Explain Site Directed Nuclease (SDN) types and India’s SDN1/SDN2 approval.	Site Directed Nuclease (SDN): SDN-1: A site-directed mutagenesis without using a DNA sequence template. SDN-2: A site-directed mutagenesis using a DNA sequence template. SDN-3: A site-directed insertion of gene/large DNA sequence using a DNA sequence template. Note: Genome editing of SDN1 and SDN2 types of genes has been approved under India’s biosafety regulations for general crops.
What is GEAC — genesis, ministry and responsibilities?	Genetic Engineering Appraisal Committee (GEAC): Genesis: Constituted as a Statutory committee under the “Rules for Manufacture, Use, Import, Export and the Storage of Hazardous Micro-organisms, Genetically Engineered Organisms or Cells, 1989”. The rules are framed under the Environment (Protection) Act, 1986. Ministry: Ministry of Environment, Forest and Climate Change (MoEF&CC). Responsibilities: Appraisal of proposals relating to the release of Genetically engineered (GE) organisms and products. Appraisal of activities involving large-scale use of hazardous microorganisms and recombinants in research and industrial production.
Describe India’s first genome-edited rice varieties (not GM).	Genome-Edited Rice: ICAR has developed India’s first genome-edited (GE) rice varieties: DRR Rice 100 (Kamla) and Pusa DST Rice. India became the first country in the world to develop GE rice varieties. Developed using Genome editing technology based on CRISPR-Cas. About the varieties: DRR Dhan 100 Kamala: Developed by ICAR–IRR (Indian Institute of Rice Research), Hyderabad. Improvement of ‘Samba Mahsuri’ by targeting the CKX2 (Cytokinin Oxidase 2) gene. A cytokinin is a plant hormone that influences growth and the stimulation of cell division. Pusa DST Rice 1: Developed by ICAR–Indian Agricultural Research Institute (IARI), New Delhi. Improved version of the fine-grain rice MTU1010 (Cottondora Sannalu). Note: These two new varieties contain no foreign DNA, and therefore are not considered GM Crops.

1D. Genome India Project & Related Genome Sequencing Initiatives

Genome India Project
Cue Words	Notes
What is the Genome India Project — genesis, objective and data storage?	Why in the News: Preliminary findings of the GenomeIndia Project published in the Journal Nature Genetics. About GenomeIndia Project: Genesis: Initiated by Department of Biotechnology (DBT) with collaborations of 20 institutions to map India’s genetic diversity. Objective: Build a comprehensive catalogue of genetic variations that reflect unique diversity of Indian population. Data Storage: Indian Biological Data Centre (IBDC) at Faridabad (Haryana). IBDC is India’s first national life science data repository, supported by DBT.
List other key initiatives for genome sequencing (India and global).	Other Key Initiatives for Genome Sequencing: IndiGen program: Initiated by the Council of Scientific and Industrial Research (CSIR). ‘One Day One Genome’ Initiative: Initiated by DBT. Human Genome Project (HGP): An international collaboration that aimed to map and sequence the entire human genome. 100,000 Genomes Project: England’s very first initiative sequencing 100,000 genomes. International HapMap Project: Analyzing over a million variants in African, Asian, and European ancestry groups.

1E. Related Biotech Developments — Gene Drive, Organ-on-Chip, RNA Silencing, Pangenome, SHUKR, DNA Profiling, Jumping Genes

Related Biotech Developments
Cue Words	Notes
What is Gene-Drive Technology (GDT) and its key components?	1.1.4.1 Gene-Drive Technology (GDT): GDT can stop insects from spreading vector-borne diseases (mosquitoes) and pests that attack plants. A type of genetic engineering technique that modifies genes to alter Mendelian inheritance (normal). Mendelian inheritance refers to certain patterns of how traits are passed from parents to offspring. Increases the likelihood that a particular suite of genes will be passed onto the next generation. Key Components: Gene, Cas9 enzyme and CRISPR.
Explain Organ-on-a-Chip (OoC) technology.	1.1.4.2 Organ-on-Chip (OoC) Technology: Organ-on-a-chip (OoC) can transform drug development. Refers to micro-scale system used for mimicking the human body environment. It is one of the human-relevant 3D culture models, also known as ‘New Approach Methods’ (NAMs). 3D culture system allows researchers to recreate human organs and diseases in one dish. Mechanism: Cells are placed on a chip and allowed to grow into 3D structures with the help of a polymer that resembles real tissue in the human body. Benefit: Provides a human-relevant, ethical, and cost-effective platform for accurate drug testing, disease modeling, and personalized medicine.
What is RNA silencing and how do miRNAs work?	1.1.4.3 RNA Silencing: Antiviral agent developed by Germany-based researchers using RNA silencing provides protection against cucumber mosaic virus (CMV), responsible for 25–30% yield losses in banana plantations. Techniques used to strengthen plant immunity against CMV include Host-Induced Gene Silencing (HIGS) and Spray-Induced Gene Silencing (SIGS). What is RNA Silencing? Gene regulation mechanism that reduces gene expression by either suppressing transcription (transcriptional gene silencing [TGS]) or degrading specific RNA after transcription (posttranscriptional gene silencing [PTGS] / RNA interference [RNAi]). It can turn down or completely shut off the activity of specific genes. Involves small RNA molecules (like siRNA or miRNA) that can bind to messenger RNA (mRNA). When these small RNAs bind to mRNA, they either: destroy the mRNA (so the protein can’t be made), or block the mRNA from being read by the cell’s protein-making machinery. microRNA (miRNA): A small non-coding RNA that helps cells regulate gene expression. Controls gene expression by binding with mRNA and preventing them from being translated into proteins or by degrading or destroying mRNA altogether. Proteins in the nucleus regulate RNA transcription and splicing while microRNAs control the translation and degradation of mRNA in the cytoplasm. Transcription copies a gene’s DNA sequence into mRNA, and translation decodes that mRNA into a specific protein.
What is a pangenome and what is PacBio HiFi sequencing?	1.1.4.4 Pangenome: Chinese Scientists created first Pangenome of Asian rice with the help of ‘PacBio high-fidelity’ (HiFi) sequencing technology. HiFi Sequencing Technology is a single-molecule, real-time sequencing technology (SMRT) that provides incredible single-molecule read accuracy across long reads. It is a kind of Long-read sequencing method of genome sequencing. What is a Pangenome? Collection of genome sequences from many individuals of the same species. Key Applications: Agriculture: Helps in introducing new traits for disease-tolerance as well as resilience in crops against climate shocks. Precision Medicine: In humans, helps in identifying population-specific genetic markers for diseases. E.g., Human Pangenome Project.
What is the SHUKR gene?	1.1.4.5 SHUKR Gene: Researchers from CSIR-Centre for Cellular and Molecular Biology (CCMB), Hyderabad, shed light on the molecular innovations in flowering plants that help explain the “abominable mystery” through newfound gene, called SHUKR (or sperm). Controls a group of genes called F-box, which help manage proteins involved in developing healthy pollen. SHUKR and its F-box genes evolve fast, explaining Darwin’s “abominable mystery” or the sudden rise and success of flowering plants in evolutionary history.
Explain DNA profiling methods (STR, mtDNA, Y chromosome, SNPs).	1.1.4.6 DNA Profiling: DNA Identification/profiling used to identify suspects or victims at Red Fort blast site. A technique used to identify individuals by analyzing unique patterns in their DNA. Based upon the variability between individuals of several noncoding regions of DNA, called VNTRs (Variable Number of Tandem Repeats). Key Methods: Short Tandem Repeat (STR): Examines short repeating DNA sequences in the nucleus. Mitochondrial DNA (mtDNA): Used if nuclear DNA is degraded. Y chromosome: Focuses on STRs on the Y chromosome, inherited father to son. Identifies male victims by matching paternal male relatives. Single Nucleotide Polymorphisms (SNPs): SNPs are single-base differences unique to individuals, matched with personal items like toothbrushes.
What are jumping genes (transposable elements) and TnpB?	1.1.4.7 Jumping Genes: A new study reveals that LINE-1, a jumping gene, binds to cellular DNA during brief periods of cell division. Recently, ICAR patented Transposon-associated proteins (TnpB) based Genome Editing technology. About Jumping Gene (Transposable Elements): DNA sequences that move from one location to another on the genome thus affecting the expression of genes. They can do so either by physically cutting and pasting themselves or by copying themselves to new locations. In the process, they may cause mutations and increase (or decrease) the amount of DNA in the cell genome. In human beings, more than 50% of the genome is composed of transposable elements.

1F. CAR-T Therapy & NexCAR19

CAR-T Therapy & NexCAR19
Cue Words	Notes
What is NexCAR19 and who developed it?	Why in the News: NexCAR19, India’s first indigenous CAR T-cell therapy, has been unveiled by the Prime Minister. More on the News: NexCAR19 therapy has been developed for B-cell blood cancers by ImmunoACT (a company incubated under IIT Bombay, and Tata Memorial Hospital), supported by DBT and Biotechnology Industry Research Assistance Council (BIRAC). Earlier, Central Drugs Standard Control Organisation (CDSCO) has approved Qartemi, a CAR T-cell therapy for treating blood cancer.
Explain Chimeric Antigen Receptor T-cell (CAR-T) therapy.	What is Chimeric Antigen Receptor T-cell (CAR-T) Therapy? Patient’s T cells are collected from the blood and genetically modified in a laboratory. A special receptor called CAR (Chimeric Antigen Receptor) is added to these T cells, enabling them to recognize and attack cancer cells more effectively. It is considered as a “living drug”.
What are the advantages and challenges of CAR-T therapy?	Advantages of CAR-T therapy: Long Term Remission: CAR-T therapy can keep cancer at bay for long periods, reducing treatment cycles. Personalized Treatment: CAR-T uses a patient’s own modified T-cells. Short treatment Duration: Entire process takes approximately 45 days. Challenges: Cytokine Release Syndrome: Systemic inflammatory response caused by cytokines released from infused CAR T cells, which can lead to organ dysfunction. Antigen Escape: Tumors develop resistance by losing antigen targeted by CAR-T cells. Other: Neurotoxicity, etc.

1G. Mitochondrial Replacement Therapy (MRT)

Mitochondrial Replacement Therapy
Cue Words	Notes
What is mitochondrial disease and how does MRT work?	Why in the News: A clinical trial in the United Kingdom successfully protected eight babies, at high risk of inheriting ‘mitochondrial diseases’ from their moms, through mitochondrial donation or Mitochondrial Replacement Therapy (MRT). What is Mitochondrial Disease? Mitochondria: Tiny “power plants” inside almost every cell; generate more than 90% of the energy in cells. Mitochondrial DNA: Mitochondria have their own DNA, distinct from nuclear DNA. Affects energy production but not physical characteristics. Mitochondrial Disease: When mitochondria are not working properly, cells don’t have enough energy and begin to die. When too many cells die, whole organ systems can fail, which can be life-threatening. Mitochondrial diseases are exclusively inherited from the child’s mother. About Mitochondrial Replacement Therapy (MRT): A new form of reproductive in vitro fertilization (IVF) which works on the principle of replacing a woman’s abnormal mitochondrial DNA (mt-DNA) with the donor’s healthy one. In MRT an embryo contains: Nuclear DNA from a man and a woman (the prospective mother) Mitochondria in an egg donated by another woman (the mitochondrial donor) Since the child born will have three distinct genetic materials, it is called a Three-Parent Baby. Techniques: Maternal Spindle Transfer (MST) and Pronuclear Transfer (PNT). PNT is done after fertilization whereas MST is done before fertilization.

1H. Stem Cells & Animal Stem Cell Biobank

Stem Cells
Cue Words	Notes
Define stem cells and their key types (pluripotent, iPSC, ESC, ASC).	Why in the News: A study has found that stem cells extracted from adipose tissue (body fat) can aid in the healing of osteoporosis-related fractures in humans. Osteoporosis is a disease which makes bones weak and fragile. About Stem Cells: Meaning: Unspecialized cells that can self-renew indefinitely and can also differentiate into more mature cells with specialized functions. In humans, they have been identified in inner cell mass of the early embryo; in some tissues of foetus, umbilical cord, placenta; and in several adult organs. Key Types: Pluripotent stem cells (embryonic stem cells and induced pluripotent stem cells) and Nonembryonic/Somatic/Adult stem cells. Pluripotent stem cells: Ability to differentiate into all cells of the adult body. Induced Pluripotent Stem Cells (iPSCs): Created through the introduction of embryonic genes into a somatic cell (e.g., Skin Cell) causing it to revert back to a “stem cell like” state. Embryonic Stem Cells (ESCs): Found in the embryo (3–5 days post fertilization and prior to implantation) containing an inner cell mass capable of generating all the specialized tissues of human body. Adult Stem Cells (ASCs): Undifferentiated cells found in tissue or organ and can differentiate to yield the specialized cell types of that tissue or organ. Key types include: Neural Stem Cells; Skin Stem Cells, etc.
What is India’s Animal Stem Cell Biobank at NIAB Hyderabad?	Animal Stem Cell Biobank: India’s first state-of-the-art animal stem cell biobank and laboratory inaugurated at National Institute of Animal Biotechnology (NIAB), Hyderabad. Key Features: Stem cell culture unit, 3D bioprinter, bacterial culture lab, cryostorage, etc. Significance: Focus on regenerative medicine and cellular therapies for livestock; advance research in disease modelling, tissue engineering, etc. Supported by: National Biopharma Mission (NBM) of Department of Biotechnology – BIRAC. NBM is an Industry-Academia Collaborative Mission for accelerating biopharmaceutical development.

1I. Phenome India National Biobank

Phenome India National Biobank
Cue Words	Notes
What is the National Biobank and the Phenome India Project?	Why in the News: National Biobank inaugurated at the CSIR-Institute of Genomics and Integrative Biology (IGIB). About National Biobank: Launched under Phenome India Project. Based on the UK Biobank model, but customized for Indian diversity. Purpose: Aid in early diagnosis, improve therapeutic targeting, and bolster the fight against complex diseases such as diabetes, cancer, and rare genetic disorders. It will generate high-resolution data that can power AI-driven diagnostics and gene-guided therapies. Coverage: Will collect comprehensive genomic, lifestyle, and clinical data from 10,000 individuals. About Phenome India Project: Officially called Phenome India-CSIR Health Cohort Knowledgebase (PI-Check). Launched by: Council of Scientific and Industrial Research (CSIR). Objective: Long-term, data-rich study tracking the health trajectories of individuals over several years. What is Phenome? Phenome is the entire set of phenotypes in a cell, tissue, organ, organism or species. Phenotype refers to the observable physical characteristics of an organism (appearance, development, and behavior). An organism’s phenotype is determined by its genotype as well as by environmental influences upon these genes.

1J. Biochemical Markers, National Biofoundry Network & BioE3 Policy

Biofoundry Network & BioE3 Policy
Cue Words	Notes
What are biochemical markers and examples for kidney complications?	1.6.1 Biochemical Markers: Indian researchers have identified biochemical markers in the blood that could help detect kidney complications in diabetic patients. Meaning: Small molecules (like sugars, amino acids, lipids) produced during metabolic processes in the body and used by doctors for ascertaining disease risks. E.g., cholesterol tests for heart disease risk. Components for identifying kidney complication: arabitol, myo-inositol, ribothymidine, etc.
What is a biofoundry and the National Biofoundry Network?	1.6.2 National Biofoundry Network: India’s first National Biofoundry Network was launched in August 2025, which also marked the first anniversary of India’s BioE3 Policy. Biofoundry: An automated facility that rapidly designs, builds, and optimizes engineered organisms by integrating DNA synthesis, gene editing, and high-throughput biomanufacturing workflows. About National Biofoundry Network: Objectives: Aid in the scale-up of proof-of-concept projects into viable technologies. Component of BioE3 Policy, categorized as Bio enablers. Functions: Scaling up research activities.
What is the BioE3 Policy — full form, launcher and aims?	About BioE3 Policy: BioE3 (Biotechnology for Economy, Environment and Employment) Policy is India’s first policy in Biotechnology. Launched by the DBT, under Ministry of Science & Technology. Aims to revolutionize biomanufacturing which includes sectors like precision biotherapeutics, carbon capture and utilisation, functional foods and smart proteins, etc.
What is the DEEP project and epigenetics?	1.6.3 Diverse Epigenetic Epidemiology Partnership (DEEP) Project: CSIR-Centre for Cellular and Molecular Biology (CCMB) is collaborating with research groups across the world on the DEEP project. Epigenetics is the study of how your behaviours and environment can cause changes that affect the way your genes work. Unlike genetic changes, epigenetic changes are reversible and do not change the DNA sequence, but they can change how body reads a DNA sequence. About DEEP Project: A five-year project led by researchers at the University of Bristol, London and the CSIR CCMB in India. Objective: Improve global health by exploring the effects of genomic and environmental diversity on disease risk across the global population.

---

2. Nanotechnology

2A. Nanotechnology — Definition, Types, Applications & Challenges

Nanotechnology Core
Cue Words	Notes
Define nanotechnology and types of nanomaterials.	Definition: Involves working with materials and devices at the nanoscale, typically ranging from 1 to 100 nm in size (nanoparticle). On the nanometer scale, materials may exhibit unusual properties. Their properties depend on shape, size, surface characteristics, and inner structure. Types: Natural nanomaterials: E.g., Volcanic ash. Artificial nanomaterials: E.g., Carbon Nanotube. Concern/Challenge: Potential toxicity of nanoparticles to humans and the environment.
List key applications of nanotechnology by sector.	Key Applications of Nanotechnology: Agriculture: Nanofertilizers (nutrient uptake with 90–100% utilization efficiency), Nanobiosensors (monitor soil conditions), etc. Health: Better imaging and diagnostics, Targeted Drug Delivery, etc. Energy: Nanostructured solar cells could be cheaper to manufacture and easier to install, etc. Environment: Nanomaterials can be employed in water purification and desalination technologies, etc. Electronics and IT: Quantum dots and other nanostructures can be used to develop advanced displays, lighting, etc. Other: Cosmetics (uses nanoparticles of some metallic oxides), etc.

2B. Carbon Nanotubes (CNTs)

Carbon Nanotubes (CNTs)
Cue Words	Notes
What are Carbon Nanotubes — structure, features and applications?	Carbon Nanotubes (CNTs) — related to Buckminster fullerene / carbon nanostructures: Structure: Cylindrical hollow figure with graphite sheets. Features: Lightweight High tensile strength Electrical conductivity Not bio-compatible Applications: Electronics, Automotive, Sports, Space, Aerospace industry. Classified as artificial nanomaterials (example of engineered nanomaterial at 1–100 nm scale). Sector-wise CNT uses: Energy: Carbon Nanotubes (CNT) in PV cells; nanotube scrubbers & electrostatic precipitators. Electronics: CNTs replacing silicon-based chips; nanowires & nanotubes (1D) — diameter and structure can make them conductors or semiconductors for nano-electronics. Agriculture (related carbon nanomaterials): Carbon Nanoparticles enhance seed germination; CNT-based ethylene sensors for crop monitoring (smart delivery / sensing).

2C. Graphene

Graphene
Cue Words	Notes
What is Graphene and what are its key properties and applications?	Graphene (2D nanomaterial): Its unique zero band gap enables ultra high conductivity for flexible electronics. Electronics: Graphene for flexible touch screens. Energy: Graphene for green hydrogen production. Recent News — Desalination: IIT Bombay scientists developed a new hydrophobic Graphene-based lotus leaf-like solar evaporators that can facilitate water desalination. Key Desalination Technologies (context): Thermal Technology: Heating of saline water and collecting the condensed vapor (distillate) to produce pure water. Usage: mainly for seawater desalination. E.g., Low Temperature Thermal Desalination (LTTD) plants, Lakshadweep. Membrane Technology: Feedwater is pumped through semi-permeable membranes to filter out the dissolved solids. Usage: mainly for brackish water desalination. E.g., Nemmeli Seawater Desalination Plant, Tamil Nadu, on Reverse Osmosis (largest desalination plant in South Asia).

2D. Nano Urea, Nano-DAP & Nano Fertilizers

Nano Urea / Nano-DAP / Nano Fertilizers
Cue Words	Notes
What are nano fertilizers and IFFCO’s Nano Urea / Nano-DAP timeline?	Why in the News: Indian Farmers Fertilizer Cooperative Limited (IFFCO) to set up its first overseas nano fertiliser plant in Brazil. IFFCO had launched world’s first ‘Nano Liquid Urea’ fertiliser in 2021 & then Nano-DAP in 2023. About Nano Fertilizers: Nutrients encapsulated or coated within nanomaterial (measuring 100 nanometres or less). Enables controlled release and its subsequent slow diffusion into the soil. Nanoscale nitrogen particles which have more surface area and number of particles. India: first country globally to start commercial production of nano urea. Significance (claimed): Reduces urea requirement. Improves soil, air & water quality. Cheaper relative to conventional high-volume urea use in some claims. Sprayed on plants (foliar) to prevent soil damage (IFFCO nano urea and DAP).
How are nano fertilisers applied and what related products has IFFCO got FCO approval for?	Application of Nano Fertilizers: Foliar spray: Sprayed on leaves (Nano Urea) — sprayed on leaves, not root; at flowering stages in study contexts. Soil Application: Sown/released (Nano Phosphorus). Seed Treatment: Coating on seeds (Nano Zinc). Hydroponic & Drip: Nutrient/pesticide supply (Nano Copper). IFFCO FCO approvals: IFFCO received FCO approval for nano zinc liquid, nano copper liquid fertilisers (addresses nutrient deficiency: Zinc → enzyme functioning; Copper → enzymatic activities & chlorophyll production). Earlier: Nano liquid urea and Nano liquid DAP also approved. FCO under Essential Commodities Act, 1955 regulates production, distribution & quality of fertilizer.
What caveats exist on Nano Urea yield claims?	Nano-urea reduced grain yield: study (key findings): Protein content issues reported; yield concerns in paddy and wheat grain in some study findings. One spray of 80 ml nano urea claimed in some materials to replace a large quantity of conventional nitrogen — but studies have flagged lack of evidence for yield gain and plant uptake efficiency concerns (root development issues).
What is TERI’s Nano-sulphur and how does it differ from nano urea?	TERI’s Nano-sulphur: TERI scientists have developed nano sulphur which reportedly increased mustard yield by 30–40%. It is a completely green product that uses biological agents like plant promoting bacteria that secrete enzymes and metabolites. This makes it different from other nano-fertilizers such as nano urea. Nano-sulphur has antibacterial and insecticidal properties.
What is a nanozyme (related nano application)?	Nanozyme: Researchers at Indian Institute of Science (IISc) developed an artificial metal-based nanozyme (vanadium pentoxide (V₂O₅)) to clamp down on abnormal blood clotting caused by conditions like pulmonary thromboembolism (PTE). Under normal conditions, an injured blood vessel witnesses the activation of platelets to form clots; under PTE overactivation of platelets occurs causing excess blood clots or thrombosis leading to mortality. About Nanozymes: Nanomaterials with intrinsic enzyme-like properties. Compared to natural enzymes, they exhibit unique advantages including high catalytic activity, low cost, high stability, easy mass production, etc.