Development of pH sensor with enhanced sensitivity using volume of bubbles generated by electrolysis

J. Sim, D. S. Kwon, J. Kim

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

Abstract

We have demonstrated a novel and simple pH sensor using electrolysis process. The pH sensor is composed of actuating and sensing electrodes sets, micro-channel and micro-reservoir embedded PDMS part. The electrodes on silicon substrate are formed by a single-step lift-off, and the channel and reservoir are molded on PDMS. The volume of hydrogen bubbles generated by electrolysis is dependent on the pH value, and the bubbles push the pH buffer solution in the reservoir into the micro-channel. The pushed distance results in the current changes between the sensing electrodes. The experimental results show that the developed pH sensor gives enhanced sensing response at strong acid, and the sensing resolution can be enhanced as the electrolysis time increases.

Original languageEnglish
Title of host publication2013 Transducers and Eurosensors XXVII
Subtitle of host publicationThe 17th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2013
Pages2029-2032
Number of pages4
DOIs
Publication statusPublished - 2013 Dec 1
Event2013 17th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2013 - Barcelona, Spain
Duration: 2013 Jun 162013 Jun 20

Publication series

Name2013 Transducers and Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2013

Other

Other2013 17th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2013
CountrySpain
CityBarcelona
Period13/6/1613/6/20

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Development of pH sensor with enhanced sensitivity using volume of bubbles generated by electrolysis'. Together they form a unique fingerprint.

  • Cite this

    Sim, J., Kwon, D. S., & Kim, J. (2013). Development of pH sensor with enhanced sensitivity using volume of bubbles generated by electrolysis. In 2013 Transducers and Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2013 (pp. 2029-2032). [6627196] (2013 Transducers and Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2013). https://doi.org/10.1109/Transducers.2013.6627196