Why is nanotechnology one of the key technologies of the 21st century? Describe the salient features of Indian Government's Mission on Nanoscience and Technology and the scope of its application in the development process of the country.

Why it is a key technology of this century

• At nano scale, surface area rises and quantum effects appear, so a small mass can catalyse, sense, or carry a drug in ways bulk chemistry cannot.
• It converges with biotech and information technology: a lab-on-chip, a targeted cancer particle, or a better lithium electrode is often a nano device.
• Economic stakes are large: electronics, coatings, composites, and pharmaceuticals will embed nano parts whether India makes them or imports them.
• Strategic stakes are real: sensors, lightweight armour, and filtration matter for security and for disaster response.
• Risks are also why it is “key”: unknown toxicity, worker exposure, and waste mean a country that only consumes nano products will still face the harm without the skill to regulate.

Salient features of the Nano Mission

• Launched in 2007 as a successor to the Nano Science and Technology Initiative, with DST as the nodal department and a Nano Mission Council to steer it.
• Human resources: teaching programmes, fellowships, and chairs so India is not only a user of imported nano goods.
• Infrastructure: centres of excellence, shared characterisation facilities (electron microscopes, clean rooms) that a single university cannot buy alone.
• Basic research in nano science together with application projects in water, energy, health, and security.
• Industry linkage and public–private projects so laboratory particles become a filter, a coating, or a diagnostic, not only a paper.
• International collaboration and a regulatory conversation on standards and safety, still thinner than the research spend.
• The Twelfth Plan continued and enlarged the Mission so the 2007 start did not remain a one-Plan experiment.

Scope in India’s development process

• Health: targeted drug delivery, better imaging, implants, and low-cost diagnostics for tuberculosis and other high-burden diseases if regulation and trials are honest.
• Water: nano-filtration and silver or other antimicrobial coatings for rural drinking water and for industrial effluent — high development value if sludge toxicity is managed.
• Energy: better solar cells, fuel-cell membranes, hydrogen storage, and battery electrodes that support the same renewable targets discussed elsewhere in this paper.
• Agriculture: slow-release nano-fertiliser and pesticide can cut dose; they also raise food-safety questions that FSSAI and environment rules must face before cheerleading.
• Textiles and materials: stain-resistant and stronger fibres for a large export industry; nano-composites for lighter vehicles and aircraft parts.
• Environment: sensors for air and water pollutants in cities.
• Caution: without occupational safety, life-cycle tests, and labelling, nano development can export risk to workers and rivers. Public laboratories and the Mission should fund toxicology as seriously as patents.