Gas emission from human skin positions detected by vertical-channel organic semiconductor sensor

Wen Ling Chang, Ching Chun Chang, Yi Ting Lee, Anh Dao Tran Thi, Chang Chiang Chen, Hsin Fei Meng, Hsiao Wen Zan, Chia Jung Lu, Mingqian He, Yang Li

Research output: Contribution to journalArticlepeer-review

Abstract

The gas emitted from the human skin is collected and measured by the highly sensitive room-temperature organic semiconductor gas sensor with vertical electrical channel. Among various positions, palms give the highest signal and heads follow. The signals are collected from 4 healthy men and 4 healthy women. The response is defined as the percent of electric current change at 5 V in 30 s after the measurement. By comparing the responses from sensors made by three different organic materials, the dominant component from the palm has different pattern from ammonia. Gas chromatography study suggests aldehydes in the palm gas. Different people show consistent results but slightly depending on sex. The body skin measurement can be extended to patients in order to establish the connection between skin gas and the diseases situations.

Original languageEnglish
Article number129994
JournalSensors and Actuators, B: Chemical
Volume343
DOIs
Publication statusPublished - 2021 Sep 15

Keywords

  • Aldehyde sensor
  • Gas sensor
  • Human skin gas

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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