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|Title:||Surface plasmon enhanced terahertz spectroscopic distinguishing between isotopes||Authors:||Tian, Z.
|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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