Frontiers of Optoelectronics, Volume. 10, Issue 2, 132(2017)
Characterization of the cooling process of solid n-alkanes via terahertz spectroscopy
The terahertz (THz) time-domain spectroscopy technique was used to characterize the cooling process of solid n-alkanes. The THz waveforms of n-octadecane, nnonadecane, n-eicosane, n-heneicosane, n-docosane, and n-pentacosane were obtained with the cooling time using the aforementioned noncontact optical method. The peak values of the THz signal were found to be related to the cooling temperature of n-alkanes. The THz wave was sensitive to the size and structure of particles in the liquid; therefore, the crystallization process of n-alkanes was monitored. An empirical equation based on signal attenuation was proposed to quantitatively distinguish the content change of structural order in the samples. Results present a new noncontact optical approach for characterizing wax crystallization via THz time-domain spectroscopy.
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Chen JIANG, Honglei ZHAN, Kun ZHAO, Cheng FU. Characterization of the cooling process of solid n-alkanes via terahertz spectroscopy[J]. Frontiers of Optoelectronics, 2017, 10(2): 132
Category: RESEARCH ARTICLE
Received: Dec. 5, 2016
Accepted: Jan. 23, 2017
Published Online: Jan. 17, 2018
The Author Email: ZHAO Kun (zhk@cup.edu.cn)