Non-spherical particles for optical trap assisted nanopatterning

Y. C. Tsai, R. Fardel, M. M. Panczyk, E. M. Furst, Craig B. Arnold

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


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.

Original languageEnglish (US)
Article number375303
Issue number37
StatePublished - Sep 20 2013

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Mechanics of Materials
  • Mechanical Engineering
  • Bioengineering
  • Electrical and Electronic Engineering
  • General Materials Science


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