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

Autor(en)

Xin-Zheng Zhang, Junqiao Wang, Bai-Quan Tang, Xinhui Tan, Romano Rupp, Leiting Pan, Yong-Fa Kong, Qian Sun, Jing-Jun Xu

Abstrakt

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.

Organisation(en)

Physik Funktioneller Materialien

Externe Organisation(en)

Nankai University

Journal

Optics Express

Band

17

Seiten

9981-9988

Anzahl der Seiten

8

DOI

https://doi.org/10.1364/OE.17.009981

Publikationsdatum

2009

Peer-reviewed

Ja

ÖFOS 2012

103021 Optik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/bf807509-78f6-4da3-ba22-9779f41594a7