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Conferences > OPJ > 2017 > NB > 30aON4
  • 2017 OPJ-OSA Joint Symposia on Nanophotonics and Digital Photonics
  • OSA Technical Digest (online) (Optica Publishing Group, 2017),
  • paper 30aON4

Micro–patterning of polymer microgels in the balance of a thermal force and a plasmon–enhanced optical force

Mitsuhiro Deguchi, Yuki Uenobo, Tatsuya Shoji, and Yasuyuki Tsuboi

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Abstract

We investigated plasmonic optical trapping (POT) of thermoresponsive polymer microgels labelled with a fluorescent probe. Upon plasmon excitation, the trapped microgels formed characteristic micro-patterns. The trapping behavior is caused by coupling of four physical phenomena; the plasmon-enhanced optical force, thermal convection, thermophoresis, and volume phase transition of the microgels. We discuss a mechanism of the micro-pattern formation.

© 2017 Optical Society of Japan

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