Diodes for Optical Tweezers
Micromanipulation of sub-millimeter objects is one of the more underappreciated technical challenges in modern scientific research. To fully understand their properties, objects such as dielectric spheres, viruses, bacteria, living cells, organelles, small metal particles, and even strands of DNA all require precise positioning under a microscope even though they can often only be tens of nanometers in size. Since these objects are too small to manipulate with a pair of tweezers, a non-contact method needs to be used to trap and then manipulate these … Read More