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Near-field enhanced optical tweezers utilizing femtosecond-laser nanostructured substrates

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Near-field enhanced optical tweezers utilizing femtosecond-laser nanostructured substrates
Lagoudakis P.G.
Kotsifaki D.G.
Κάνδυλα, Μαρία
Άρθρο σε επιστημονικό περιοδικό
2015
We present experimental evidence of plasmonic-enhanced optical tweezers, of polystyrene beads in deionized water in the vicinity of metal-coated nanostructures. The optical tweezers operate with a continuous wave near-infrared laser. We employ a Cu/Au bilayer that significantly improves dissipation of heat generated by the trapping laser beam and avoid de-trapping from heat convection currents. We investigate the improvement of the optical trapping force and the effective trapping quality factor, and observe an exponential distance dependence of the trapping force from the nanostructures, indicative of evanescent plasmonic enhancement.
Φυσική και θεωρητική χημεία (EL)
Physical and theoretical chemistry (EN)
English
American Institute of Physics Inc.
Applied Physics Letters
© 2015 AIP Publishing LLC.
© 2015 AIP Publishing LLC. (EN)
National Hellenic Research Foundation (NHRF)
Helios - Repository of the National Hellenic Research Foundation (NHRF)



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