Near-field imaging of surface plasmon on gold nano-dots fabricated by scanning probe lithography.
We obtained scanning near-field optical microscopy images to study the excitation of surface plasmons on metallic dots fabricated using scanning probe lithography. Gold nano-dots were fabricated by applying electric voltages to conducting probes installed in an atomic force microscope using the mechanism of field-induced diffusion and nano-oxidation plus Au-coating. High spatial resolution of scanning near-field optical microscopy revealed a 'bifold' pattern of surface plasmon mode on fabricated Au dots in the polarization direction of incident light. We found that scanning near-field optical microscopy imaging combined with scanning probe lithography is able to provide a systematic study of surface plasmon excitation on nano-metallic structures.
Kim
J
J
Department of Physics, University of Incheon, Dowha-dong 177, Nam-ku, Incheon 402-749, Korea. jeongyong@incheon.ac.kr
Kim
J
J
Song
K I-B
KI
Lee
S Q
SQ
Kim
E U N-K
EU
Choi
S-E U L
SE
Lee
Y
Y
Park
K-H O
KH
D000535:Aluminum / Q000032:analysis; D004867:Equipment Design; D006046:Gold / Q000737:chemistry*; D018625:Microscopy, Atomic Force / Q000295:instrumentation; D008855:Microscopy, Electron, Scanning / Q000379:methods; D020527:Microscopy, Scanning Probe / Q000295:instrumentation / Q000379:methods*; D036103:Nanotechnology; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance
D006046:Gold; D000535:Aluminum