@inproceedings{3e8aacc27c734c579f250046fa6e66a2,
title = "Laser-terahertz emission readout of chemical sensors",
abstract = "A new type of laser-terahertz emission system for the non-contact investigation of the chemical solutions has been developed. This system monitors the terahertz emission from a sensing plate, which consists of a silicon oxide and a silicon thin film layers on the sapphire substrate. The sensing of chemical solutions with the pH value between 1.68 and 10.01 was demonstrated. The amplitude of terahertz emission from the sensing plate increased with increasing the pH value. This change in the amplitude was caused by the change of the depletion layers of the silicon thin film when protons adsorbed at the surface of the sensing plate. This result indicates that fully non-contact monitoring of chemical solutions can be possible using the laser-terahertz emission system.",
keywords = "Chemical sensor, Terahertz, Ultrafast laser",
author = "T. Kiwa and J. Kondo and S. Oka and I. Kawayama and H. Yamada and M. Tonouchi and K. Tsukada",
year = "2007",
month = dec,
day = "1",
doi = "10.1109/SENSOR.2007.4300533",
language = "English",
isbn = "1424408423",
series = "TRANSDUCERS and EUROSENSORS '07 - 4th International Conference on Solid-State Sensors, Actuators and Microsystems",
pages = "1915--1918",
booktitle = "TRANSDUCERS and EUROSENSORS '07 - 4th International Conference on Solid-State Sensors, Actuators and Microsystems",
note = "4th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS '07 ; Conference date: 10-06-2007 Through 14-06-2007",
}