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Nobel Prize for Chemistry 2023 | PWOnlyIAS 2023

October 5, 2023

GS Paper III Science and Technology

Context

The Nobel Prize for Chemistry 2023 was shared by three scientists—Moungi G. Bawendi, Louis E. Brus and Alexei I. Ekimov.

About Nobel Prize for Chemistry 2023

Nobel Prize for Chemistry 2023 has been awarded for the discovery and synthesis of quantum dots.

What are quantum dots?

Quantum dots are particles that are a few nanometres wide.
They exhibit unique optical properties due to their small physical size.
- Their structure and atomic composition are the same as bulk materials, but the properties of the latter don’t depend on their size.
In fact, the properties of quantum dots can be changed by changing their size.

Nobel Prize For Chemistry

Applications of Quantum Dots

Quantum dots have the ability to convert a spectrum of light into different colors.
They are also used to map biological tissues by biochemists.
Quantum dots are also used in photovoltaic cells to improve the absorption and efficiency in converting solar light into electricity.
Certain cancer treatments use quantum dots for targeted drug delivery and other therapeutic measures
Quantum dots can be used as security markers on currency and documents as an anti-counterfeit measure. Broadly, they can be used as fluorescent markers to tag and track objects.

News Source: The Hindu

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