Carbon Black-Gelatin Composite Thin-Film Chemiresistor with Large Response to Chemical Vapors

Chun Huang, Zhuqing Wang, Yi Te Huang, Noriko Tsuruoka, Takahito Ono

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper proposes a new carbon black composite thin film and its depositing method. The thin film functions as a chemiresistor which changes its resistance in response to gas vapor exposure. A composite of carbon black (CB) powder and a gelatin (GE) polymer is used as the resistor material. A microelectrode structure is formed on a glass substrate by using microfabrication. A mixture solution of CB and GE is deposited on the microelectrode by a needle dispenser to form the chemiresistor with a thickness of approximately 400 nm. The vapor response of the chemiresistor is tested for water and ethanol at room temperature. The chemiresistor exhibits extreme large response (200300% in resistance increment) upon exposure to these vapors.

Original languageEnglish
Title of host publication21st International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages880-883
Number of pages4
ISBN (Electronic)9781665412674
DOIs
Publication statusPublished - 2021 Jun 20
Event21st International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2021 - Virtual, Online, United States
Duration: 2021 Jun 202021 Jun 25

Publication series

Name21st International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2021

Conference

Conference21st International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2021
Country/TerritoryUnited States
CityVirtual, Online
Period21/6/2021/6/25

Keywords

  • Carbon black
  • Chemiresistor
  • Composite
  • Gelatin

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Control and Optimization
  • Instrumentation

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