Nanooptics of molecular-shunted plasmonic nanojunctions.
Nanooptics of molecular-shunted plasmonic nanojunctions.
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分子旋转等离子体纳米缝合的纳米词。
DOI:
10.1021/nl5041786
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发表时间:
2015-01-14
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:
Benz F;Tserkezis C;Herrmann LO;de Nijs B;Sanders A;Sigle DO;Pukenas L;Evans SD;Aizpurua J;Baumberg JJ
Gold nanoparticles are separated above a planar gold film by 1.1 nm thick self-assembled molecular monolayers of different conductivities. Incremental replacement of the nonconductive molecules with a chemically equivalent conductive version differing by only one atom produces a strong 50 nm blue-shift of the coupled plasmon. With modeling this gives a conductance of 0.17G0 per biphenyl-4,4′-dithiol molecule and a total conductance across the plasmonic junction of 30G0. Our approach provides a reliable tool quantifying the number of molecules in each plasmonic hotspot, here <200.
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