title: Optical Epitaxial Growth of Gold Nanoparticle Arrays.
abstract: We use an optical analogue of epitaxial growth to assemble gold nanoparticles into 2D arrays. Particles are attracted to a growth template via optical forces and interact through optical binding. Competition between effects determines the final particle arrangements. We use a Monte Carlo model to design a template that favors growth of hexagonal particle arrays. We experimentally demonstrate growth of a highly stable array of 50 gold particles with 200 nm diameter, spaced by 1.1 μm.
authors.affiliation: Ming Hsieh Department of Electrical Engineering and ‡Department of Physics & Astronomy, University of Southern California , Los Angeles, California 90089, United States.
authors.forename: Ningfeng
authors.initials: N
authors.lastname: Huang
authors.affiliation: Ming Hsieh Department of Electrical Engineering and ‡Department of Physics & Astronomy, University of Southern California , Los Angeles, California 90089, United States.
authors.forename: Luis Javier
authors.initials: LJ
authors.lastname: Martínez
authors.affiliation: Ming Hsieh Department of Electrical Engineering and ‡Department of Physics & Astronomy, University of Southern California , Los Angeles, California 90089, United States.
authors.forename: Eric
authors.initials: E
authors.lastname: Jaquay
authors.affiliation: Ming Hsieh Department of Electrical Engineering and ‡Department of Physics & Astronomy, University of Southern California , Los Angeles, California 90089, United States.
authors.forename: Aiichiro
authors.initials: A
authors.lastname: Nakano
authors.affiliation: Ming Hsieh Department of Electrical Engineering and ‡Department of Physics & Astronomy, University of Southern California , Los Angeles, California 90089, United States.
authors.forename: Michelle L
authors.initials: ML
authors.lastname: Povinelli
keywords: Optical trapping; epitaxial growth; gold nanoparticles; optical binding; photonic crystal; self-assembly