Temperature-Resolved Terahertz Time Domain Spectroscopy to Investigate Solid State Phase-Transitions in Amino Acid Crystals

被引：0
|
作者：
Neu, Jens [1 ]
Nemes, Coleen T. [1 ]
Regan, Kevin P. [1 ]
Williams, Michael R. C. [1 ]
Schmuttenmaer, Charles A. [1 ]
机构：
[1] Yale Univ, Dept Chem, 225 Prospect St, New Haven, CT 06511 USA
来源：
2017 42ND INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ) | 2017年
基金：
美国国家科学基金会;
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中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We present Terahertz (THz) measurements of DLnorvaline ( DL-Nva) organic molecular crystals. This material undergoes a solid-state phase transition when the temperature is reduced to less than 180 K. The low temperature and room temperature phases have different THz absorption spectra, which allows them to be distinguished. A better understanding of the mechanism of the phase transition is gained by studying the influence of crystal grain size as well as the effect of doping the DL-Nva crystals with other amino acids.
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