Science and Technology › Materials and nanotechnology
हिन्दी — Read in HindiMaterials, nanotechnology and advanced manufacturing
Materials and how they are made: nanomaterials and their uses in health, smart and advanced materials, composites, technical textiles, and 3D printing. Prelims has asked about nanotechnology in health, the uses of geotextiles and the applications of 3D printing.
Foundation note: Jute geotextiles
UPSC has asked
- Prelims 2018: applications of 3D printing
- Prelims 2015: nanotechnology in health, targeted drug delivery and gene therapy
Lab grown diamonds
Copy link to Lab grown diamondsPrelims
A lab grown diamond is a diamond grown in a reactor, the same substance as a mined stone and not an imitation of it.
- High Pressure, High Temperature (HPHT) synthesis mimics conditions in the Earth's mantle.
- Chemical Vapour Deposition (CVD) deposits carbon from a gas onto a diamond seed.
What changed
4 Aug 2026BriefConflict diamonds still evade the Kimberley Process, which is part of the case made for the grown stone. The Hindu, 4 Aug 2026: Lab-grown diamonds as an alternative to mined stones (opens in a new tab)