Optical Epitaxial Growth of Gold Nanoparticle Arrays.
basic_science · Level V
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- Record sourced from PubMed, PMID 26230429.
- Also identified by DOI 10.1021/acs.nanolett.5b01929.
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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.