Nanotechnology: Applications, Risks, and Policy
Nanotechnology (1-100 nm scale) enables novel properties: quantum effects, high surface area, tunable optics. Applications: medicine (drug delivery, diagnostics), electronics (transistors, memory), energy (solar, batteries), environment (water purification, sensors), textiles, cosmetics. India: Nano Mission (2007, DST), thematic units. Risks: toxicity, environmental persistence, regulatory gaps. Policy: Nano Mission Phase II, BIS standards, CDSCO guidelines.[TOPIC CLASSIFICATION]
- Topic type: Science & Technology - Nanotechnology
- PYQ frequency: Medium
- Exam stage: Prelims + Mains
- Primary GS paper: GS 3
[EXAMINER REASONING]
- Trap: Confusing nanotechnology with biotechnology. Nano = 1-100 nm materials engineering; Bio = living systems. Many aspirants conflate nano-drug delivery with biotech drugs.
- Most confused: The risk classification: engineered nanoparticles (intentional) vs incidental (combustion). Toxicity depends on size, shape, surface charge, coating. Many aspirants don't know the risk assessment framework.
- Key anchor: India's Nano Mission (2007, DST, Phase II 2014): capacity building, infrastructure, applications, international collaboration. Thematic units: nano-electronics, nano-materials, nano-biotech, nano-energy. BIS standards for nano. CDSCO for nano-medicines.
- Current affairs hook: Nano Mission Phase II (2014-20). Quantum dots for displays. Nano-fertilizers (IFFCO). Nano-sensors for water quality. Carbon nanotubes for composites. Graphene research (IISc, IITs). Nano-silver antimicrobial textiles. Regulatory guidelines for nano-cosmetics, nano-medicines.
- Mains hinge: Evaluate: Is India's nano ecosystem ready for commercialization? The lab-to-market gap, regulatory uncertainty (CDSCO vs BIS vs DST), and the risk-benefit balance for nano-materials in food/environment are the Mains frames.
Core Concept
Nanotechnology: manipulation of matter at 1-100 nm scale. Novel properties: quantum confinement, high surface-to-volume, tunable optics, enhanced reactivity.
Applications: Medicine (drug delivery: liposomes, dendrimers; diagnostics: quantum dots, nano-sensors; implants: nano-hydroxyapatite). Electronics (transistors: FinFET, GAA; memory: MRAM, RRAM; interconnects: carbon nanotubes). Energy (solar: perovskite, quantum dots; batteries: nano-silicon anodes, solid-state; hydrogen: nano-catalysts). Environment (water: nano-filters, photocatalysis; sensors: heavy metals, pathogens; remediation: nano-zero-valent iron). Agriculture (nano-fertilizers: IFFCO nano-urea, nano-DAP; nano-pesticides).
India: Nano Mission (2007, DST, Phase I 2007-14, Phase II 2014-20). Thematic units: Nano-electronics (IISc, IITs), Nano-materials (ARCI, NCL), Nano-biotech (ICMR, DBT), Nano-energy (IISc, IITB). Infrastructure: 20+ nano-characterization facilities.