ABSTRACT

Basic Information

Abstract Number:	2590 - 2
Author Name:	Peter Nordlander - Rice University
Session Title:	Biological TERS: Instrumentation Development and Applications
Event Type:	Symposia
Event Title:	Exploiting Quantum and Coherent Plasmonic Effects for Surface Enhanced Spectroscopies

Presider Name:	Igor Lednev
Affiliation:	University at Albany, SUNY

Date:	Thursday, March 12, 2015
Start Time:	01:35 PM (Slot #2)
Location:	239

Abstract Content

Metallic nanostructures with their ability of confining and enhancing incident light offer unique possibilities for manipulating light at the nanoscale.[1] Plasmons can efficiently capture incident light and focus it to nanometer sized hotspots which can enhance electronic and vibrational excitations in nearby structures. In this talk, I will discuss how recently discovered fundamental plasmonics effects, plasmonic Fano resonances and quantum plasmonics, can be exploited for surface enhanced spectroscopies. Plasmonic Fano resonances with their characteristic narrow and asymmetric line shapes can provide very large field enhancements making such modes particularly useful in LSPR sensing and surface enhanced spectroscopies such as SERS,[2] Four-wave mixing,[3] and SECARS.[4] Quantum mechanical effects such as electron tunneling[5] and hot carrier generation[6] on the surface of a plasmonic nanostructure can induce charge transfer into adsorbed molecules and change their cross sections. References [1] N.J. Halas et al., Adv. Mat. 24(2012)4842 [2] J. Ye et al., Nano Lett. 12(2012)1660 [3] Y. Zhang et al., Proc. Natl. Acad. Sci. USA 110(2013)921 [4] Y. Zhang et al., Nature Comm. 5(2014)4424 [5] R. Esteban et al., Nature Comm. 3(2012)825 [6] S. Mukherjee et al., Nano Lett. 13(2013)240, JACS 136(2014)64