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Multi-Level Pyramidal Microstructure-Based Pressure Sensors with High Sensitivity and Wide Linear Range for Healthcare Monitoring.
An, Tongge; Zhang, Yongjun; Wen, Jiahong; Dong, Zhichao; Du, Qifeng; Liu, Long; Wang, Yaxin; Xing, Guozhong; Zhao, Xiaoyu.
Afiliación
  • An T; College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China.
  • Zhang Y; Qiantang Science and Technology Innovation Center, Hangzhou 310018, China.
  • Wen J; College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China.
  • Dong Z; Shangyu Institute of Science and Engineering, Hangzhou Dianzi University, Shaoxing, Zhejiang 312000, China.
  • Du Q; The College of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, China.
  • Liu L; Shangyu Institute of Science and Engineering, Hangzhou Dianzi University, Shaoxing, Zhejiang 312000, China.
  • Wang Y; College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China.
  • Xing G; Qiantang Science and Technology Innovation Center, Hangzhou 310018, China.
  • Zhao X; Qiantang Science and Technology Innovation Center, Hangzhou 310018, China.
ACS Sens ; 9(2): 726-735, 2024 02 23.
Article en En | MEDLINE | ID: mdl-38266628
ABSTRACT
Flexible pressure sensors have garnered significant attention in the field of wearable healthcare due to their scalability and shape variability. However, a crucial challenge in their practical application for various healthcare scenarios is striking a balance between the sensitivity and sensing range. This limitation arises from the reduced compressibility of the microstructures on the surface of pressure-sensitive materials under high pressure, resulting in progressive saturation of the sensor's response and leading to a restricted and nonlinear pressure sensing range. In this study, we present a novel approach utilizing multi-level pyramidal microstructures in flexible pressure sensors to achieve both high sensitivity (8775 kPa-1) and linear response (R2 = 0.997) over a wide pressure range (up to 1000 kPa). The effectiveness of the proposed design stems from the compensatory behavior of the lower pyramidal microstructures, which counteracts the declining sensitivity associated with the gradual hardening of the higher pyramidal microstructures. Furthermore, the sensor demonstrates a fast response time of 11.6 ms and a fast relaxation time of 3.8 ms and can reliably detect pressures as low as 30.2 Pa. Our findings highlight the applicability of this flexible pressure sensor in diverse human body health detection tasks, ranging from weak pulses to finger flexion and plantar pressure distribution. Notably, the proposed sensor design eliminates the need for replacing flexible pressure sensors with varying ranges, thereby enhancing their practical utility.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Diagnostic_studies Idioma: En Revista: ACS Sens Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Diagnostic_studies Idioma: En Revista: ACS Sens Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos