Destruction of a spherical polystyrene microparticle in pulsed ultraviolet beam for micromanipulation purpose

Roman V. Skidanov, Vadim S. Vasiliev

The modelling of heating a spherical polystyrene microparticle by the laser beam having the wavelength 355 nm and varying spot size is described. The simulation results are presented for two different values of the beam spot radius. Nature experiments are reported aimed at measuring the velocity of a particle with the radius 5µm accelerated by microexplosion of the neighbouring particle.

DOI

Compact optical tweezer with the capability of dynamic control

Alexander Korobtsov, Svetlana Kotova, Nikolay Losevsky, Aleksandra Mayorova, Sergey Samagin

The extension of capabilities towards the formation of controlled complex-shaped optical traps is demonstrated for the compact laser tweezer based on the four-channel LC modulator. The experimental results on the yeast cell manipulation, including the particles larger than 10 μm, are presented. The capture and confinement of the object with the dimensions 37 μm × 13 μm was realized by means of the use of the ellipse-shaped trap. The maximal escape velocity of this object was about 20 μm/s.

DOI