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Flexible and Highly Sensitive Pressure Sensor Based on Microdome-Patterned PDMS Forming with Assistance of Colloid Self-Assembly and Replica Technique for Wearable Electronics.
ACS Appl Mater Interfaces 2017; 9(41):35968-35976AA

Abstract

Flexible pressure sensors are one of the vital component units in the next generation of wearable electronics for monitoring human physiological signals. In order to improve the sensing properties of the sensors, we demonstrate flexible, tunably resistive pressure sensors based on elastic microstructured polydimethylsiloxane (PDMS) film via a simple, low-cost colloid self-assembly technology, which uses monodispersed polystyrene (PS) microspheres as monolayer and an ordered sacrificial template. The sensors exhibit high sensitivity of -15 kPa-1 under low pressure (<100 Pa), with fast response time (<100 ms), high stability over 1000 cycles of pressure loading/unloading, low-pressure detection limit of 4 Pa, and wide working pressure regime (<5 kPa) by optimizing the size of PS microspheres. Moreover, the multipixel arrays of the pressure sensor are fabricated to illustrate the sensing ability of space pressure distribution. The developed flexible pressure sensors are successfully used to detect human neck pulse, show great promise for monitoring human body motions, and have potential applications in wearable devices.

Authors+Show Affiliations

Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, China. Department of Nano Science and Technology Institute, University of Science and Technology of China , Suzhou 215123, China.Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, China.Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, China.Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, China. Department of Nano Science and Technology Institute, University of Science and Technology of China , Suzhou 215123, China.Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, China.Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, China.Department of Electronics Engineering, The Chinese University of Hong Kong , Hong Kong 999077, China. School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28952303

Citation

Zhang, Yuan, et al. "Flexible and Highly Sensitive Pressure Sensor Based On Microdome-Patterned PDMS Forming With Assistance of Colloid Self-Assembly and Replica Technique for Wearable Electronics." ACS Applied Materials & Interfaces, vol. 9, no. 41, 2017, pp. 35968-35976.
Zhang Y, Hu Y, Zhu P, et al. Flexible and Highly Sensitive Pressure Sensor Based on Microdome-Patterned PDMS Forming with Assistance of Colloid Self-Assembly and Replica Technique for Wearable Electronics. ACS Appl Mater Interfaces. 2017;9(41):35968-35976.
Zhang, Y., Hu, Y., Zhu, P., Han, F., Zhu, Y., Sun, R., & Wong, C. P. (2017). Flexible and Highly Sensitive Pressure Sensor Based on Microdome-Patterned PDMS Forming with Assistance of Colloid Self-Assembly and Replica Technique for Wearable Electronics. ACS Applied Materials & Interfaces, 9(41), pp. 35968-35976. doi:10.1021/acsami.7b09617.
Zhang Y, et al. Flexible and Highly Sensitive Pressure Sensor Based On Microdome-Patterned PDMS Forming With Assistance of Colloid Self-Assembly and Replica Technique for Wearable Electronics. ACS Appl Mater Interfaces. 2017 Oct 18;9(41):35968-35976. PubMed PMID: 28952303.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Flexible and Highly Sensitive Pressure Sensor Based on Microdome-Patterned PDMS Forming with Assistance of Colloid Self-Assembly and Replica Technique for Wearable Electronics. AU - Zhang,Yuan, AU - Hu,Yougen, AU - Zhu,Pengli, AU - Han,Fei, AU - Zhu,Yu, AU - Sun,Rong, AU - Wong,Ching-Ping, Y1 - 2017/10/06/ PY - 2017/9/28/pubmed PY - 2017/9/28/medline PY - 2017/9/28/entrez KW - microdome-patterned films KW - polystyrene microspheres KW - resistive pressure sensors KW - self-assembly KW - tunable sensitivity SP - 35968 EP - 35976 JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces VL - 9 IS - 41 N2 - Flexible pressure sensors are one of the vital component units in the next generation of wearable electronics for monitoring human physiological signals. In order to improve the sensing properties of the sensors, we demonstrate flexible, tunably resistive pressure sensors based on elastic microstructured polydimethylsiloxane (PDMS) film via a simple, low-cost colloid self-assembly technology, which uses monodispersed polystyrene (PS) microspheres as monolayer and an ordered sacrificial template. The sensors exhibit high sensitivity of -15 kPa-1 under low pressure (<100 Pa), with fast response time (<100 ms), high stability over 1000 cycles of pressure loading/unloading, low-pressure detection limit of 4 Pa, and wide working pressure regime (<5 kPa) by optimizing the size of PS microspheres. Moreover, the multipixel arrays of the pressure sensor are fabricated to illustrate the sensing ability of space pressure distribution. The developed flexible pressure sensors are successfully used to detect human neck pulse, show great promise for monitoring human body motions, and have potential applications in wearable devices. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/28952303/Flexible_and_Highly_Sensitive_Pressure_Sensor_Based_on_Microdome_Patterned_PDMS_Forming_with_Assistance_of_Colloid_Self_Assembly_and_Replica_Technique_for_Wearable_Electronics_ L2 - https://dx.doi.org/10.1021/acsami.7b09617 DB - PRIME DP - Unbound Medicine ER -