Tweezer Laser Beams Can Move Particles Without Damaging Them
Researchers developed optical nanotweezers that can transport particles in multi-parameter spaces.
Led by Professor Romain Quidant, researchers at the Institute of Photonic Sciences has developed optical nanotweezers that use light to transport tiny particles in three dimensions. Without physically touching the tiny objects, this highly-advanced device shapes the light to envelop and trap a microscopic object by focusing a beam of laser light, which create a “self-induced back action.”
It features a metal-coated optical fiber with a bowtie-shaped opening, and is capable of manipulating particles 1,000 times thinner than human hair without overheating the object, which past proof-of-concept optical tweezers couldn’t avoid.