Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Paper-based Electrochemical Sensor Using a Self-operated Paper Pump

자발 구동형 종이 펌프를 이용한 종이 전기화학 센서

  • Si Hiep Hua (Department of Applied Chemistry, Hanyang University) ;
  • Chikwan Kim (Department of Applied Chemistry, Hanyang University) ;
  • Duc Cuong Nguyen (Department of Applied Chemistry, Hanyang University) ;
  • Yong Shin Kim (Department of Applied Chemistry, Hanyang University)
  • ;
  • 김치관 (한양대학교 응용화학과) ;
  • ;
  • 김용신 (한양대학교 응용화학과)
  • Received : 2024.04.18
  • Accepted : 2024.05.02
  • Published : 2024.05.31
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Abstract

We developed a self-operated paper pump that can maintain a nearly constant flow rate of an aqueous solution along a paper strip channel in paper-based analytical devices (PADs). The quasi-stationary flow rate was controlled by increasing the crosssectional channel area (capillary force) using a fan-shaped absorption pad coupled with a paper strip channel. The flow rate is regulated by varying the fan angle of the circular absorbing pad. Furthermore, the flow rate can be increased by furnishing a hollow cavity at the center of a conventional paper strip channel. The rate was regulated by varying the length of the hollow paper channel in the flow rate range of 5.1-26.4 mm/min. As a preliminary work, a paper-pump-coupled PAD was fabricated, and its CV detection capability was evaluated for the redox reaction of Fe(CN)6+4/+3. The combination of a paper pump with a PAD resulted in an ideal CV curve with a higher limiting current and faster response time. These results are interpreted well by the Levich equation, which suggests that the paper pump is a very useful component in paper-based sensors.

Keywords

Acknowledgement

본 연구는 경기도의 경기도지역협력연구센터(GRRC) 사업의 일환으로 수행하였음. [(GRRC한양2020-B04), 안전성 확보를 위한 수소 센싱 기술 개발]

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