... have also been used to probe the cytoskeleton, measure the visco-elastic properties of biopolymers, and study ... Optical tweezers are capable of manipulating nanometer and micron-sized dielectric particles by exerting extremely small forces ... Witzens, J., Hochberg, M. (2011). "Optical detection of target molecule induced aggregation of nanoparticles by means of high-Q ... nanoparticles and droplets, in a manner similar to tweezers. If the object is held in air or vacuum without additional support ...
Niu X, Gulati S, Edel JB, deMello AJ (November 2008). "Pillar-induced droplet merging in microfluidic circuits". Lab on a Chip ... objects trapped in a microfluidic device can be directly manipulated using optical tweezers or other force-generating methods ... The early methods had the advantage of easier detection from certain machines like those that measure fluorescence. More recent ... At small scales (channel size of around 100 nanometers to 500 micrometers) some interesting and sometimes unintuitive ...