AVS 62nd International Symposium & Exhibition
    Nanometer-scale Science and Technology Tuesday Sessions
       Session NS+EN+SS-TuA

Paper NS+EN+SS-TuA3
Surface Plasmon-Mediated Selective Deposition of Au Nanoparticles on Ag Bowtie Nano-Antennas

Tuesday, October 20, 2015, 3:00 pm, Room 212B

Session: Nanophotonics, Plasmonics, and Energy
Presenter: Jingjing Qiu, University of Florida
Authors: JJ. Qiu, University of Florida
D. Wei, University of Florida
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Utilizing intrinsic surface properties to selectively direct and control nanostructure growth on a nanostructure is fundamentally interesting and holds great technological promise. We observed a surface plasmon resonance (SPR)-induced selective deposition of gold nanoparticles (Au NPs) at the tip of a silver (Ag) bowtie nanostructure using 532 nm laser excitation. Nanoscale secondary ion mass spectrometry (NanoSIMS) was applied to chemically image the distribution of elements after deposition, reaching a spatial resolution of ~50 nm and an elemental analysis sensitivity of 50 ppm. Possible mechanisms underlying this selective deposition were proposed based on the experimental evidence and theoretical discrete dipole approximation (DDA).