Optical characteristics of pesticides measured by terahertz time domain spectroscopy

Dong-Kyu Lee; Giyoung Kim; Joo-Hiuk Son

doi:10.1117/12.2184387

1 July 2015 Optical characteristics of pesticides measured by terahertz time domain spectroscopy

Dong-Kyu Lee, Giyoung Kim, Joo-Hiuk Son

Proceedings Volume 9655, Fifth Asia-Pacific Optical Sensors Conference; 965516 (2015) https://doi.org/10.1117/12.2184387
Event: Fifth Asia Pacific Optical Sensors Conference, 2015, Jeju, Korea, Republic of

Abstract

In this study, we measured the optical characteristics of pesticides by terahertz time-domain spectroscopy. Pesticide samples were prepared as pellets that were mixed with polyethylene powder and placed in the center of the path of a terahertz electromagnetic (EM) wave in the spectroscopy system. The absorbance of each sample showed obvious differences in absorption peaks. From this result, we showed that these pesticide products had resonance modes in the terahertz range, and this method can be used to make a sensor that is able to measure low concentrations of pesticides in farm produce.

Citation Download Citation

Dong-Kyu Lee, Giyoung Kim, and Joo-Hiuk Son "Optical characteristics of pesticides measured by terahertz time domain spectroscopy", Proc. SPIE 9655, Fifth Asia-Pacific Optical Sensors Conference, 965516 (1 July 2015); https://doi.org/10.1117/12.2184387

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