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Current Affairs

Scientists develop cancer cell detection ‘dots’ from coal

Date: 20 June 2019 Tags: Nanotechnology

Scientists from CSIR-NEIST Assam have developed chemical process that turns ‘dirty’ coal into biomedical ‘carbon quantum dots (CQDs)’ to help detect cancer cells.

What are CQDs?

CQDs are carbon-based nanomaterials whose size is less than 10 nm, or nanometre. They are used as diagnostic tools for bio-imaging, especially in detecting cancer cells, for chemical sensing and in opto-electronics

CQDs developed by CSIR-NEIST

It is made from cheap, abundant, low-quality and high-sulphur coals. It has high-stability, good-conductivity, low-toxicity, environmental friendliness, and good optical properties. It has fluorescent, bluish colour. Its price is one-twentieth the cost of imported CQDs.