TY - GEN
T1 - Development of pH sensor with enhanced sensitivity using volume of bubbles generated by electrolysis
AU - Sim, J.
AU - Kwon, D. S.
AU - Kim, J.
PY - 2013
Y1 - 2013
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84891718504&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84891718504&partnerID=8YFLogxK
U2 - 10.1109/Transducers.2013.6627196
DO - 10.1109/Transducers.2013.6627196
M3 - Conference contribution
AN - SCOPUS:84891718504
SN - 9781467359818
T3 - 2013 Transducers and Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2013
SP - 2029
EP - 2032
BT - 2013 Transducers and Eurosensors XXVII
T2 - 2013 17th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2013
Y2 - 16 June 2013 through 20 June 2013
ER -