Flexible piezoelectric liquid volume sensor

Flexible piezoelectric liquid volume sensor

•We developed a contact-free liquid volume sensor based on a flexible PVDF film.•Resonance frequency of vibration is detected using our sensor when a liquid container vibrates.•A simulation describes the relationship between resonance frequecy and liquid volume.•Sensitivity increases with stacked mu...

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Bibliographic Details
Published in:Sensors and actuators. A. Physical. Vol. 276; pp. 219 - 225
Main Authors: Ryu, Jeongjae, Jeong, Hanbert, Chen, Yugang, Oh, Chungik, Kim, Jaegyu, Kim, Hongjun, Cho, Seongwoo, No, Kwangsoo, Park, Yong-Hwa, Park, Steve, Hong, Seungbum
Format: Journal Article
Language:English
Published: Lausanne Elsevier B.V 15-06-2018
Elsevier BV
Subjects:
Containers
Flexible
Fluids
Internet of Things
Liquid
Piezoelectric
Piezoelectricity
Polyvinylidene fluorides
PVDF
Sensors
Volume sensor
Volume sensor
Liquid
Flexible
PVDF
Piezoelectric
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Summary:•We developed a contact-free liquid volume sensor based on a flexible PVDF film.•Resonance frequency of vibration is detected using our sensor when a liquid container vibrates.•A simulation describes the relationship between resonance frequecy and liquid volume.•Sensitivity increases with stacked multiple sensors in series.•An integrated actuator-sensor system is demonstrated. We report a non-contact type polyvinylidene fluoride (PVDF)-based liquid volume sensor. When a liquid container vibrates due to an applied impact, our sensor that is attached to the wall of the container detects the resonance frequency of vibration, which shifts as a result of change in liquid volume. The sensitivity of our sensor was enhanced by stacking multiple sensors in series. A PVDF bimorph actuator was also fabricated to demonstrate an integrated actuator-sensor system. We believe that the results presented in this work will pave the way for novel applications in volume sensing.
ISSN:0924-4247
1873-3069
DOI:10.1016/j.sna.2018.04.035