Scientists developed worlds smallest engine

Posted on:04 May 2016 18:17:26

Scientists developed worlds smallest engine
04 May 2016 Current Affairs:

A group of researchers from University of Cambridge researchers have built the world's smallest working engine. The research was published in the journalProceedings of the National Academy of Sciences of the United States of America (PNAS) on 2 May 2016.The engine is just a few billionths of a metre in size and uses light to power itself.The nanoscale engine could form the basis of future nano-machines that can navigate in water, sense the environment around them, or even enter living cells to fight disease.Professor Jeremy Baumberg from the Cavendish Laboratory, who led the research, has named the devices ANTs, or Actuating Nano-Transducers.

Key highlights of the nanoscale engine:The prototype device is made of tiny charged particles of gold, bound together with temperature-responsive polymers in the form of a gel.When the engine is heated to a certain temperature with a laser, it stores large amounts of elastic energy in a fraction of a second, as the polymer coatings expel all the water from the gel and collapse.This has the effect of forcing the gold nanoparticles to bind together into tight clusters.However, when the device is cooled, the polymers take on water and expand, and the gold nanoparticles are strongly and quickly pushed apart.




Subscribe to Current Affairs

Enter your email to get daily current affairs

Current Affairs July 2017

27 JULY
NEWS
26 JULY
NEWS
25 JULY
NEWS
24 JULY
NEWS

Current Affairs June 2017

30 JUNE
NEWS
29 JUNE
NEWS
28 JUNE
NEWS
27 JUNE
NEWS

Current Affairs May 2017

31 MAY
NEWS
30 MAY
NEWS
29 MAY
NEWS
27 MAY
NEWS