TITLE

Split ring resonator sensors for infrared detection of single molecular monolayers

AUTHOR(S)
Cubukcu, Ertugrul; Shuang Zhang; Yong-Shik Park; Bartal, Guy; Xiang Zhang
PUB. DATE
July 2009
SOURCE
Applied Physics Letters;7/27/2009, Vol. 95 Issue 4, p043113
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report a surface enhanced molecular detection technique with zeptomole sensitivity that relies on resonant coupling of plasmonic modes of split ring resonators and infrared vibrational modes of a self-assembled monolayer of octadecanthiol molecules. Large near-field enhancements at the gap of split ring resonators allow for this resonant coupling when the molecular absorption peaks overlap spectrally with the plasmonic resonance. Electromagnetic simulations support experimental findings.
ACCESSION #
43494192

 

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