Bøger af Andrea Kroner

Optical trapping and manipulation by laser beams offers the unique possibility to handlesingle micrometer-sized particles such as living cells without any mechanical contact,damage or contamination. A second hot topic in biology is microfluidics, where the examinationof biological samples in channel structures with widths below 100 µm reducesthe used sample volume significantly. While the combination of both techniques results inattractive lab-on-a-chip structures for particle sorting and analysis, the commonly bulkytrapping setup is contradictory to the miniaturized concept. Here, the use of vertical-cavitysurface-emitting lasers (VCSELs) as light sources in optical trapping systems allows a strongreduction of the setup complexity owing to the small dimensions, low cost and high beamquality of these devices.