Mapping Nanoscale Hotspots with Single-Molecule Emitters Assembled into Plasmonic Nanocavities Using DNA Origami.
Mapping Nanoscale Hotspots with Single-Molecule Emitters Assembled into Plasmonic Nanocavities Using DNA Origami.
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DOI:
10.1021/acs.nanolett.7b04283
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发表时间:
2018-01-10
期刊:
影响因子:
10.8
通讯作者:
Baumberg JJ
中科院分区:
文献类型:
--
作者:
Chikkaraddy R;Turek VA;Kongsuwan N;Benz F;Carnegie C;van de Goor T;de Nijs B;Demetriadou A;Hess O;Keyser UF;Baumberg JJ
Fabricating nanocavities in which optically active single quantum emitters are precisely positioned is crucial for building nanophotonic devices. Here we show that self-assembly based on robust DNA-origami constructs can precisely position single molecules laterally within sub-5 nm gaps between plasmonic substrates that support intense optical confinement. By placing single-molecules at the center of a nanocavity, we show modification of the plasmon cavity resonance before and after bleaching the chromophore and obtain enhancements of ≥4 × 103 with high quantum yield (≥50%). By varying the lateral position of the molecule in the gap, we directly map the spatial profile of the local density of optical states with a resolution of ±1.5 nm. Our approach introduces a straightforward noninvasive way to measure and quantify confined optical modes on the nanoscale.
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DOI:
10.1021/acs.jpclett.6b00986
发表时间:
2016-06-16
期刊:
The journal of physical chemistry letters
影响因子:
--
作者:
Benz F;Chikkaraddy R;Salmon A;Ohadi H;de Nijs B;Mertens J;Carnegie C;Bowman RW;Baumberg JJ
通讯作者:
Baumberg JJ
影响因子:
64.8
作者:
Chikkaraddy R;de Nijs B;Benz F;Barrow SJ;Scherman OA;Rosta E;Demetriadou A;Fox P;Hess O;Baumberg JJ
通讯作者:
Baumberg JJ
影响因子:
14.9
作者:
Douglas SM;Marblestone AH;Teerapittayanon S;Vazquez A;Church GM;Shih WM
通讯作者:
Shih WM
影响因子:
56.9
作者:
Acuna, G. P.;Moeller, F. M.;Tinnefeld, P.
通讯作者:
Tinnefeld, P.
影响因子:
2.9
作者:
Bamgbelu, Anu;Wang, Jing;Leszczynski, Jerzy
通讯作者:
Leszczynski, Jerzy