A) Are used to remove facial hair with miniaturised laser beams
B) Use light to manipulate particles as small as a single atom
C) Are a Nano technology based tool for stamp collectors
D) Don?t exist
Correct Answer: B
Solution :
[b] Optical tweezers (originally called "single-beam gradient force trap") are scientific instruments that use a highly focused laser beam to provide an attractive or repulsive force (typically on the order of piconewtons), depending on the refractive index mismatch to physically hold and move microscopic dielectric objects similar to tweezers. Optical tweezers have been particularly successful in studying a variety of biological systems in recent years.
You need to login to perform this action.
You will be redirected in
3 sec
