This invention relates to a process for moving a particle using a device comprising a substrate (4), a wave guide (2) and a grating (6) formed on the wave guide, in which: light with wavelength λ is injected into the wave guide, the light transmitted through the guide is diffracted...http://www.google.es/patents/US7211787?utm_source=gb-gplus-sharePatente US7211787 - Particle movement device
