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Nanostructure-Enhanced Laser Tweezers

Lin_nanostructure-enhanced-laser-tweezersOptical manipulation of particles has broad applications in nanoscience, biological study and biomedicine. Conventional optical tweezers require high optical intensity due to low efficiency in direct conversion from optical energy to mechanical energy. We explore the enhanced field from plasmonic or photonic crystal nanostructures to increase the trapping efficiency and functionality of optical tweezers. Using these approaches, we have demonstrated efficient trapping and rotation of micro/nano-particles and living cells.