Journal
NANO LETTERS
Volume 14, Issue 9, Pages 5184-5188Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl502083m
Keywords
Optical trapping; self-assembly; optical binding; photonic crystal; optical manipulation; plasmonics
Categories
Funding
- Army Research Office PECASE Award [56801-MS-PCS]
Ask authors/readers for more resources
We experimentally demonstrate the technique of light-assisted, templated self-assembly (LATS) to trap and assemble 200 nm diameter gold nanoparticles. We excite a guided-resonance mode of a photonic-crystal slab with 1.55 mu m laser light to create an array of optical traps. Unlike our previous demonstration of LATS with polystyrene particles, we find that the interparticle interactions play a significant role in the resulting particle patterns. Despite a two-dimensionally periodic intensity profile in the slab, the particles form one-dimensional chains whose orientations can be controlled by the incident polarization of the light. The formation of chains can be understood in terms of a competition between the gradient force due to the excitation of the mode in the slab and optical binding between particles.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available