Optical trapping and manipulation of metallic micro/nanoparticles via photorefractive crystals

Xin-Zheng Zhang, Junqiao Wang, Bai-Quan Tang, Xinhui Tan, Romano Rupp, Leiting Pan, Yong-Fa Kong, Qian Sun, Jing-Jun Xu (Korresp. Autor*in)

Veröffentlichungen: Beitrag in FachzeitschriftArtikelPeer Reviewed

Abstract

A simple method to trap and manipulate metallic micro/nanoparticles on the surface of photorefractive crystals is proposed. After inducing inhomogeneous charge density and space-charge fields in photorefractive crystals by non-uniform illumination, both uncharged and charged metallic particles can be trapped on the illuminated surface due to dielectrophoretic force and electrophoretic force, respectively. A transition from dielectrophoresis to electrophoresis is observed when manipulating nano-silver particles with high surface space-charge field. Our results show that this method is simple and effective to form surface microstructures of metallic particles.
OriginalspracheEnglisch
Seiten (von - bis)9981-9988
Seitenumfang8
FachzeitschriftOptics Express
Jahrgang17
Ausgabenummer12
DOIs
PublikationsstatusVeröffentlicht - 2009

ÖFOS 2012

  • 103021 Optik

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