期刊
NANOTECHNOLOGY
卷 24, 期 37, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/24/37/375303
关键词
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资金
- NSF [CMMI-1145062, CMMI-1235291]
- AFOSR [FA9550-11-1-0208]
- NSF MRSEC program through the Princeton Center for Complex Materials [DMR-0819860]
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [0930549] Funding Source: National Science Foundation
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1235291] Funding Source: National Science Foundation
Optical trap assisted nanopatterning is a laser direct-write technique that uses an optically trapped microsphere as a near-field objective. The type of feature that one can create with this technique depends on several factors, one of which is the shape of the microbead. In this paper, we examine how the geometry of the bead affects the focus of the light through a combination of experiments and simulations. We realize nanopatterning using non-spherical dielectric particles to shape the light-material interaction. We model the resulting nanoscale features with a finite difference time domain simulation and obtain very good agreement with the experiments. This work opens the way to systematic engineering of the microparticle geometry in order to tailor the near-field focus to specific nanopatterning applications.
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