000195586 001__ 195586
000195586 005__ 20181203023411.0
000195586 022__ $$a1530-6984
000195586 02470 $$2ISI$$a000327111700072
000195586 0247_ $$2doi$$a10.1021/nl403030g
000195586 037__ $$aARTICLE
000195586 245__ $$aGap Plasmons and Near-Field Enhancement in Closely Packed Sub-10 nm Gap Resonators
000195586 269__ $$a2013
000195586 260__ $$aWashington$$bAmer Chemical Soc$$c2013
000195586 300__ $$a5
000195586 336__ $$aJournal Articles
000195586 520__ $$aPairs of metal nanoparticles with a sub-10 nm gap are an efficient way to achieve extreme near-field enhancement for sensing applications. We demonstrate an attractive alternative based on Fabry-Perot type nanogap resonators, where the resonance is defined by the gap width and vertical elongation instead of the particle geometry. We discuss the crucial design parameters for such gap plasmons to produce maximum near-field enhancement for surface-enhanced Raman scattering and show compatibility of the pattern processing with low-cost and low-resolution lithography. We find a minimum critical metal thickness of 80 nm and observe that the mode coupling from the far field increases by tapering the gap opening. We also show the saturation of the Raman signal for nanogap periodicities below 1 mu m, demonstrating efficient funneling of light into such nanogap arrays.
000195586 6531_ $$aNanogap
000195586 6531_ $$agap plasmon
000195586 6531_ $$asurface-enhanced Raman scattering
000195586 6531_ $$anear-field enhancement
000195586 6531_ $$alight funneling
000195586 6531_ $$aFabry-Perot
000195586 6531_ $$aNanophotonics
000195586 6531_ $$aPlasmonics
000195586 700__ $$aSiegfried, Thomas$$uPaul Scherrer Inst, Lab Micro & Nanotechnol, CH-5232 Villigen, Switzerland
000195586 700__ $$aEkinci, Yasin$$uPaul Scherrer Inst, Lab Micro & Nanotechnol, CH-5232 Villigen, Switzerland
000195586 700__ $$0244723$$aMartin, Olivier J. F.$$g159310
000195586 700__ $$aSigg, Hans$$uPaul Scherrer Inst, Lab Micro & Nanotechnol, CH-5232 Villigen, Switzerland
000195586 773__ $$j13$$k11$$q5449-5453$$tNano Letters
000195586 909C0 $$0252353$$pNAM$$xU10373
000195586 909CO $$ooai:infoscience.tind.io:195586$$pSTI$$particle
000195586 917Z8 $$x229344
000195586 917Z8 $$x229344
000195586 917Z8 $$x229344
000195586 937__ $$aEPFL-ARTICLE-195586
000195586 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000195586 980__ $$aARTICLE