Supercapacitive Iontronic Nanofabric Sensing

Ruya Li, Yang Si, Zijie Zhu, Yaojun Guo, Yingjie Zhang, Ning Pan, Gang Sun, Tingrui Pan

Research output: Contribution to journalArticle

65 Scopus citations

Abstract

The study of wearable devices has become a popular research topic recently, where high-sensitivity, noise proof sensing mechanisms with long-term wearability play critical roles in a real-world implementation, while the existing mechanical sensing technologies (i.e., resistive, capacitive, or piezoelectric) have yet offered a satisfactory solution to address them all. Here, we successfully introduced a flexible supercapacitive sensing modality to all-fabric materials for wearable pressure and force sensing using an elastic ionic–electronic interface. Notably, an electrospun ionic fabric utilizing nanofibrous structures offers an extraordinarily high pressure-to-capacitance sensitivity (114 nF kPa−1), which is at least 1000 times higher than any existing capacitive sensors and one order of magnitude higher than the previously reported ionic devices, with a pressure resolution of 2.4 Pa, achieving high levels of noise immunity and signal stability for wearable applications. In addition, its fabrication process is fully compatible with existing industrial manufacturing and can lead to cost-effective production for its utility in emerging wearable uses in a foreseeable future.

Original languageEnglish (US)
Article number1700253
JournalAdvanced Materials
Volume29
Issue number36
DOIs
StatePublished - Sep 27 2017

Keywords

  • capacitive sensing
  • flexible electronics
  • ionic sensing
  • pressure sensing
  • wearable sensors

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Li, R., Si, Y., Zhu, Z., Guo, Y., Zhang, Y., Pan, N., Sun, G., & Pan, T. (2017). Supercapacitive Iontronic Nanofabric Sensing. Advanced Materials, 29(36), [1700253]. https://doi.org/10.1002/adma.201700253