TY - JOUR
T1 - Tailoring polypyrrole film characteristics with multi-step oxygen plasma treatment for high-performance strain sensors
T2 - Impact on bonding, microstructure, and electrical responsivity
AU - Muhammad, Waqar
AU - Kim, Sam Dong
N1 - Publisher Copyright:
© 2024 Elsevier B.V.
PY - 2024/5/1
Y1 - 2024/5/1
N2 - We investigate the impact of oxygen plasma treatment (O2 PT) on the performance of polypyrrole (PPy)/polydimethylsiloxane strain sensors. Utilizing a three-step chemical oxidative polymerization method for PPy growth, we explore various durations of O2 PT (0, 30, 60, and 90 s) during intermediate growth stages. Through analyses using X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy, we elucidate the relationship between O2 PT, structural changes, and strain sensor performance. Sensor devices plasma-treated for 30 s exhibit exceptional characteristics: a gauge factor of 432 at 50% strain and a response time of 50 ms under quasi-step function strain variation from 0% to 1% in 40 ms. These results underscore the pivotal role of O2 PT in enhancing the performance of PPy-based strain sensors, providing insights for advanced sensor design and fabrication techniques.
AB - We investigate the impact of oxygen plasma treatment (O2 PT) on the performance of polypyrrole (PPy)/polydimethylsiloxane strain sensors. Utilizing a three-step chemical oxidative polymerization method for PPy growth, we explore various durations of O2 PT (0, 30, 60, and 90 s) during intermediate growth stages. Through analyses using X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy, we elucidate the relationship between O2 PT, structural changes, and strain sensor performance. Sensor devices plasma-treated for 30 s exhibit exceptional characteristics: a gauge factor of 432 at 50% strain and a response time of 50 ms under quasi-step function strain variation from 0% to 1% in 40 ms. These results underscore the pivotal role of O2 PT in enhancing the performance of PPy-based strain sensors, providing insights for advanced sensor design and fabrication techniques.
KW - Electrical conductivity
KW - FTIR
KW - Microcracks
KW - Oxygen plasma treatment
KW - Polypyrrole layers
KW - XPS
UR - http://www.scopus.com/inward/record.url?scp=85187201141&partnerID=8YFLogxK
U2 - 10.1016/j.sna.2024.115249
DO - 10.1016/j.sna.2024.115249
M3 - Article
AN - SCOPUS:85187201141
SN - 0924-4247
VL - 370
JO - Sensors and Actuators A: Physical
JF - Sensors and Actuators A: Physical
M1 - 115249
ER -