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In this paper, we employed a temperature-tuned terahertz time domain spectroscopy (THz-TDS) to measure THz spectroscopic features of four amino acids, i.e., L-alanine, L-asparagine, L-cysteine and L-tyrosine in the temperature range of 4.5–300K. The THz spectra of four amino acids were found to be sensitive to temperature change. All of the amino acids have blue-shift phenomenon with about 0.10 THz...
Terahertz absorption spectra of four DNA nucleobases were studied by terahertz time domain spectroscopy and Fourier transform infrared spectroscopy and demonstrated by calculating corresponding vibration modes using the extended generalized energy-based fragmentation approach under periodic boundary conditions method (PBC-GEBF). The experimental results were demonstrated to be in good agreement with...
In this paper, we present methods to identify harmful Bursaphelenchus xylophilus (Bx) nematode and harmless Bursaphelenchus mucronatus (Bm) nematode, both of them living in the pine wood. We employ the terahertz (THz) spectroscopic technology to distinguish the Bx and Bm nematodes, i.e., terahertz domain spectroscopy (TDS) and Fourier transform infrared spectroscopy (FTIR). We measure the transmission...
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