Sensing the hygroscopicity of polymer and copolymer materials using terahertz time-domain spectroscopy.
We present the hygroscopicity of polymer and copolymer materials in the low terahertz (THz) frequency range using a linear absorption model. We identify COC 6013 and COC 5013 as optimal THz window materials, possessing both low hygroscopicity and high transmission in the THz regime. The correct choice of window material is of significance for transmission THz spectroscopy and of particular interest for THz liquid spectroscopy.
Balakrishnan
Jegathisvaran
J
Centre for Biomedical Engineering and School of Electrical and Electronic Engineering, The University of Adelaide, Adelaide, South Australia 5005, Australia. jega@eleceng.adelaide.edu.au
Fischer
Bernd M
BM
Abbott
Derek
D
D016014:Linear Models; D008422:Materials Testing / Q000379:methods*; D011108:Polymers / Q000737:chemistry*; D055068:Terahertz Spectroscopy; D017155:Wettability
D011108:Polymers