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Woven Structure for Flexible Capacitive Pressure Sensors

Published online by Cambridge University Press:  24 February 2020

Saki Tamura ,
Justin K. M. Wyss ,
Mirza Saquib Sarwar ,
Addie Bahi ,
John D. W. Madden  and
Frank K. Ko
Saki Tamura*
Affiliation:
Department of Materials Engineering Department of Advanced Fibro-Science, Kyoto Institute of technology Kyoto, 606 8585, Japan
Justin K. M. Wyss
Affiliation:
Department of Electrical and Computer Engineering School of Biomedical Engineering, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
Mirza Saquib Sarwar
Affiliation:
Department of Electrical and Computer Engineering
Addie Bahi
Affiliation:
Department of Materials Engineering
John D. W. Madden
Affiliation:
Department of Electrical and Computer Engineering School of Biomedical Engineering, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
Frank K. Ko
Affiliation:
Department of Materials Engineering
*
*(Email: saki.0121.f.5.c@gmail.com)
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Abstract

Flexible and stretchable capacitive pressure sensors have been developed in recent years due to their potential applications in health monitoring, robot skins, body activity measurements and so on. In order to enhance sensor sensitivity, researchers have changed structure of the dielectric of parallel plate capacitive sensor . Here we enhance the sensor sensitivities by changing electrode composition and explore the use of a woven electrode structure sensor with silver coated nylon yarn and EcoflexTM. The woven structure enhanced sensitivity 2.3 times relative to a simple cross-grid geometry (sensitivity was 0.003 kPa-1). Furthermore, it is also observed that the sensor with the woven electrode also had better repeatability and showed less creep than a device using carbon black electrodes. The woven structure of the electrodes enabled the device to be compliant, despite the presence of the stiff nylon fibres – thereby enabling good sensitivity without the creep seen in softer electrodes.

Keywords

piezoelectricflexiblefabricelectronic material
Type
Articles
Information
MRS Advances , Volume 5 , Issue 18-19: Soft Materials and Biomaterials , 2020 , pp. 1029 - 1037
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Copyright
Copyright © Materials Research Society 2020

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References

References:

Yao, S. and Zhu, Y., Nanoscale 6, 2345 (2014).10.1039/c3nr05496aCrossRefGoogle Scholar
Kwon, D., Lee, T. I., Shim, J., Ryu, S., Kim, M. S., Kim, S., Kim, T. S., and Park, I., ACS Appl. Mater. Interfaces 8, 16922 (2016).10.1021/acsami.6b04225CrossRefGoogle Scholar
Ma, L., Shuai, X., Hu, Y., Liang, X., Zhu, P., Sun, R., and Wong, C. P., J. Mater. Chem. C 6, 13232 (2018).10.1039/C8TC04297GCrossRefGoogle Scholar
Woo, S. J., Kong, J. H., Kim, D. G., and Kim, J. M., J. Mater. Chem. C 2, 4415 (2014).10.1039/C4TC00392FCrossRefGoogle Scholar
Liu, W. and Yan, C., Sensors (Switzerland) 18, 1 (2018).Google ScholarPubMed
Hu, W., Niu, X., Zhao, R., and Pei, Q., Appl. Phys. Lett. 102, (2013)Google Scholar
Nie, B., Li, R., Cao, J., Brandt, J. D., and Pan, T., Adv. Mater. 27, 6055 (2015)10.1002/adma.201502556CrossRefGoogle Scholar
Ma, S., Ribeiro, F., Powell, K., Lutian, J., Moller, C., Large, T., and Holbery, J., ACS Appl. Mater. Interfaces 7, 21628 (2015).10.1021/acsami.5b04717CrossRefGoogle Scholar
Chen, L., Chen, X., Zhang, Z., Li, T., Zhao, T., Li, X., and Zhang, J., J. Sensors 2019, (2019).Google Scholar
Pruvost, M., Smit, W. J., Monteux, C., Poulin, P., and Colin, A., Npj Flex. Electron. 3, 13 (2019).10.1038/s41528-019-0052-6CrossRefGoogle Scholar
Kwon, D., Lee, T. I., Kim, M. S., Kim, S., Kim, T. S., and Park, I., 2015 Transducers - 2015 18th Int. Conf. Solid-State Sensors, Actuators Microsystems, TRANSDUCERS 2015 299 (2015).Google Scholar
us Sarwar, M.S., “Soft capacitive sensors for proximity, touch, pressure and shear measurements,” T, University of British Columbia, 2019Google Scholar