Nano Archive

Close encounters between two nanoshells

Lassiter, J. Britt and Aizpurua, Javier and Hernandez, Luis I. and Brandl, Daniel W. and Romero, Isabel and Lal, Surbhi and Hafner, Jason H. and Nordlander, Peter and Halas, Naomi J. (2008) Close encounters between two nanoshells. NANO LETTERS, 8 (4). pp. 1212-1218.

Full text is not hosted in this archive but may be available via the Official URL, or by requesting a copy from the corresponding author.

Official URL: http://dx.doi.org/10.1021/nl080271o

Abstract

Plasmonic nanoparticle pairs known as ``dimers'' embody a simple system for generating intense nanoscale fields for surface enhanced spectroscopies and for developing an understanding of coupled plasmons. Individual nanoshell dimers in directly adjacent pairs and touching geometries show dramatically different plasmonic properties. At close distances, hybridized plasmon modes appear whose energies depend extremely sensitively on the presence of a small number of molecules in the interparticle junction. When touching, a new plasmon mode arising from charge transfer oscillations emerges. The extreme modification of the overall optical response due to minute changes in very reduced volumes opens up new approaches for ultrasensitive molecular sensing and spectroscopy.

Item Type:Article
Subjects:Material Science > Tunnelling and microscopic phenomena
Physical Science > Nano objects
ID Code:2312
Deposited By:Anuj Seth
Deposited On:18 Dec 2008 15:53
Last Modified:26 Mar 2009 17:38

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