Chemical sensing plate with a laser-terahertz monitoring system.

@article{Kiwa2008ChemicalSP,
  title={Chemical sensing plate with a laser-terahertz monitoring system.},
  author={Toshihiko Kiwa and Junichi Kondo and Shohei Oka and Iwao Kawayama and Hironobu Yamada and Masayoshi Tonouchi and Keiji Tsukada},
  journal={Applied optics},
  year={2008},
  volume={47 18},
  pages={
          3324-7
        }
}
A new type of laser-terahertz emission system for noncontact investigations of chemical solutions has been developed. The system monitors terahertz emission from a sensing plate, which consists of silicon oxide and silicon thin film layers on a sapphire substrate. Sensing of chemical solutions with pH values between 1.68 and 10.01 was demonstrated. The amplitude of the terahertz emission from the sensing plate increased with increasing pH value. This change in the amplitude was caused by a… CONTINUE READING
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