期刊
OPTICS EXPRESS
卷 17, 期 12, 页码 9981-9988出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.17.009981
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资金
- Tianjin Natural Science Foundation [07JCYBJC16600]
- National Science Foundation of China [10874093, 10604033, 10804055]
- National Basic Research Program of China [2007CB307002]
- International S&T Cooperation Project [2005DFA10170]
- 111 Project [B07013]
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. (C) 2009 Optical Society of America
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