Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 114, Issue 16, Pages 7489-7491Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp9114139
Keywords
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Funding
- National Science Foundation (NSF) [0709323]
- U.S. Air Force Office of Scientific Research (AFOSR) [FA9550-06-1-0279, FA9550-08-1-0394]
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [0709323] Funding Source: National Science Foundation
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We present the first demonstration of pL-scale analyte index sensing based on surface phonon polaritons in the midinfrared, which are excited at the silicon carbide/analyte interface in the Otto configuration. Attenuated total reflectance measurements reveal analyte index specificity through a double-scan of wavelength and incidence angle for analyte volumes as small as 100 pL. Midinfrared sensing tuned to surface phonon polariton resonance paves the way for index sensing of analytes beyond current volume-resolution limits.
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