Laser patterning and fabrication of nano/microparticle systems in solution

Syoji Ito*, Toshiaki Mizuno, Hiroyuki Yoshikawa, Hiroshi Masuhara

*Corresponding author for this work

Research output: Contribution to journalConference article

1 Scopus citations

Abstract

Laser manipulation technique was applied to the patterning of single nano/microparticles in solution at room temperature. Individual gold nanoparticles were optically manipulated to the surface of a glass substrate in ethylene glycol. An ultraviolet laser beam was focused to the nanoparticle, which led to the transient temperature elevation of the particle, resulting in its photothermal fixation. A set of gold nanoparticles was aligned in the anisotropic optical potential well of a tightly focused laser beam with linear polarization and was adhered onto the substrate through the same photothermal method keeping their alignment. Combination of a microstereolithography with the laser trapping method enabled us to fabricate three-dimensional microstructures of resin and fix microparticles to them.

Original languageEnglish
Article number85
Pages (from-to)608-615
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5514
DOIs
StatePublished - 1 Dec 2004
EventOptical Trapping and Optical Micromanipulation - Denver, CO, United States
Duration: 2 Aug 20046 Aug 2004

Keywords

  • Gold nanoparticle
  • Laser manipulation
  • Microstereolithography
  • Nano-patterning
  • Photopolymerization
  • Photothermal fixation
  • Transient melting

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