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Raman Enhancement at AFM-Designed Gold Nanoparticle Junctions

Submission Date :
2 / 12 / 2008 , 11 : 08 : 42
Abstract Number :
101021208688
Presenting Type:
Poster Presentation
Presenting Area :
물리화학
Authors :
하동균, 하동균, 이상학, 이상학, 김성근, 김성근
서울대학교 화학부,
Assigned Code :
29P24포 Assigend Code Guideline
Presenting Time :
금 <발표Ⅴ>
Surface enhanced Raman scattering (SERS) is known to be dramatically enhanced at the junctions between nanoparticles because of the formation of a “hot spot” for strong field enhancement. Such SERS-enhancing hot spot was designed by deliberate assembly of gold nanoparticles with an atomic force microscope cantilever. We investigated the change in SERS intensity as we varied the separation between the two gold nanoparticles placed in cyclohexane by the AFM tip. We also studied the dependence of the SERS intensity on the polarization axis of the nanoparticle pair.