Optical Pulling and Pushing Force for Dielectric, Chiral and Plasmonic nano particles
Date
2020-12-31
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Abstract
Optical pulling has been demonstrated on dielectric, plasmonic and chiral nanostructures using dielectric substrate. On the plasmonic substrate, the optical pushing force is also visible. For a specific wavelength range, optical pulling force can be obtained on a dielectric substrate. For estimating optical pulling force on nanostructures, we devised a general framework based on the time averaged Minkowski stress tensor. There is also a demonstration of a failed attempt to locate pulling force on a plasmonic substrate. The pulling force in dielectric particles on dielectric substrate is caused by the interference of electric quadrupole and dipole. The recoil force in a chiral particle can be used to create pulling force. The pulling force in plasmonic particles is caused by the current density.
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Electrical and Computer Engineering
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North South University