Optical tweezers in a dusty universe

Abstract Optical tweezers are powerful tools based on focused laser beams. They able to trap, manipulate, and investigate a wide range of microscopic nanoscopic particles in different media, such as liquids, air, vacuum. Key applications this contactless technique have been developed many fields. Despite progress, optical trapping planetary exploration still be developed. Here we describe how can used trap characterize extraterrestrial particulate matter. In particular, exploit light scattering theory the T-matrix formalism calculate radiation pressure properties variety complex astrophysical interest. Our results open perspectives investigation our planet, controlled laboratory experiments, aiming for space applications: dust or bodies surface.