Surface plasmon enhanced terahertz spectroscopic distinguishing between isotopes

Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.cplett.2009.05.003

Title:	Surface plasmon enhanced terahertz spectroscopic distinguishing between isotopes
Authors:	Tian, Z. Han, J. Lu, X. Gu, J. Xing, Q. Zhang, W.
Issue Date:	16-Jun-2009
Citation:	Tian, Z., Han, J., Lu, X., Gu, J., Xing, Q., Zhang, W. (2009-06-16). Surface plasmon enhanced terahertz spectroscopic distinguishing between isotopes. Chemical Physics Letters 475 (1-3) : 132-134. ScholarBank@NUS Repository. https://doi.org/10.1016/j.cplett.2009.05.003
Abstract:	We present an experimental demonstration of surface plasmon enhanced terahertz spectroscopic identification of methyl alcohol isotopes by use of metallic array of subwavelength holes. Due to isotopic hydrogen/deuterium substitution, the refractive indices of methyl alcohol and isotopes vary from each other in the terahertz regime. This leads to a modification in the wave vector and consequently the resonance condition of surface plasmons excited at the metal-dielectric interface. A distinct resonance shift and an amplitude modification are observed, giving high characterization sensitivity and thereby demonstrating that such plasmonic array has potential in developing new techniques in isotope distinguishing. © 2009 Elsevier B.V. All rights reserved.
Source Title:	Chemical Physics Letters
URI:	http://scholarbank.nus.edu.sg/handle/10635/98136
ISSN:	00092614
DOI:	10.1016/j.cplett.2009.05.003
Appears in Collections:	Staff Publications

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