Wearable, self-cleaning, wireless integrated tactile sensory system with superior sensitivity

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

7 Scopus Citations
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Author(s)

  • Xuan Li
  • Weidong Wang
  • Lingjun Wu
  • Haitao Zhao
  • Meng Wang
  • Hongcheng Xu
  • Min Liu
  • Libo Gao

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number113027
Journal / PublicationSensors and Actuators A: Physical
Volume331
Online published18 Aug 2021
Publication statusPublished - 1 Nov 2021

Abstract

Flexible tactile sensors (FTS), which have been extensively used in force sensing devices, are gaining tremendous attentions in various application fields, such as robots, electronic skin (E-Skin), human-machine interaction (HMI), and many other rapidly developing frontier technologies. However, fabricating FTS achieving both high sensitivity and broad sensing range remains a great challenge. Moreover, the integration of FTS with flexible circuit boards has long been a hot topic due to its potential applications in flexible hybrid electronics (FHEs). Here, we report a novel flexible tactile sensor with ultrahigh sensitivity and wide sensing range and its application in a self-cleaning and fully integrated wearable tactile sensing system for real-time analysis. Benefiting from the conductive sensing materials composed of fine inverted pyramid arrays and double-covered sensing layers, the sensor exhibits a superior sensitivity of 451.292 kPa−1, a wide working range up to 250 kPa, and a fast response time of 31 ms, as well as long-term durability. Furthermore, the sensor system can accurately monitor the grasped force in real-time and easily be fixed on a flexible clamping jaw or human hands. Our design concept and experimental approach, either for the flexible sensor or the whole system, potentially push further the wearable electronics toward practical applications.

Research Area(s)

  • Electronic skin, Flexible circuit, Flexible tactile sensor, Self-cleaning, Sensor

Citation Format(s)

Wearable, self-cleaning, wireless integrated tactile sensory system with superior sensitivity. / Li, Xuan; Wang, Weidong; Wu, Lingjun et al.
In: Sensors and Actuators A: Physical, Vol. 331, 113027, 01.11.2021.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review