Optical Tweezers, Chirped Pulse Amplification and Thermal Battery Plant (Download PDF)

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Optical tweezers grab particles, atoms, viruses and other living cells with their laser beam fingers. Invented by Arthur Ashkin. Tool allowed Ashkin to realise an old dream of science fiction - using the radiation pressure of light to move physical objects. Ashkin succeeded in getting laser light to push small particles towards the centre of the beam and to hold them there.

  • Tweezers are used to capture living bacteria without harming them.
  • Uses include the millions of corrective eye surgeries that are conducted every year using the sharpest of laser beams.

Chirped Pulse Amplification

  • Way of amplifying a laser pulse without destroying the amplifying medium.
  • Chirped pulse amplification (or CPA) .
  • The material the laser pulse is traveling through in turn prevents further amplification.

Thermal Battery Plant

  • World՚s first-ever thermal battery plant- Inaugurated in Andhra Pradesh.
  • Consists of two parts such as a cool zone known as sink, and a hot source called source.
  • On receiving heat, the sink of a thermal battery transforms physically or chemically, thereby storing energy, while the source cools down.
  • The sink cools down releasing the stored energy while the source heats up.


  • Electric vehicles.
  • Telecom infrastructures.
  • Power intensive industries

- Published/Last Modified on: March 19, 2020


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