Enhanced High-Resolution Triboelectrification-Induced Electroluminescence for Self-Powered Visualized Interactive Sensing

Ying Wang, Hai Lu Wang, Hua Yang Li, Xiao Yan Wei, Zhong Lin Wang, Guang Zhu

Research output: Journal PublicationArticlepeer-review

15 Citations (Scopus)

Abstract

Transforming dynamic mechanical interactions into visualized luminescence represents a research frontier in the detection of tactile stimuli. Here, we report a self-powered high-resolution triboelectrification-induced electroluminescence (HR-TIEL) sensor for visualizing the contact profile and dynamic trajectory of a contact object. As dynamic interactions occur, triboelectric charges at the contact interface generate a transient electric field that excites the phosphor. From the numerical simulation, a conductive layer based on transparent silver nanowires (AgNWs) guides the direction of the electric field and confines it within the profile boundary of the connect object. As a result, a sharp change of the electric field at the profile boundary greatly promotes the luminescence intensity as well as the lateral spatial resolution. Compared to a triboelectrification-induced electroluminescence (TIEL) sensor without the conductive layer, the luminescence intensity is enhanced by 90%, and the lateral spatial resolution of ∼500 μm is achieved. The HR-TIEL sensor is then demonstrated to reveal the surface texture on a nitrile glove. It relies on neither additional power supplies nor complex wiring/circuit design. This work paves the way for the feasible detection of tactile stimuli such as touch and slipping, which will be potentially used in robotics, human-machine interface, flexible and wearable electronics, and so forth.

Original languageEnglish
Pages (from-to)13796-13802
Number of pages7
JournalACS applied materials & interfaces
Volume11
Issue number14
DOIs
Publication statusPublished - 10 Apr 2019

Keywords

  • electroluminescence
  • self-powered
  • slipping sensor
  • tactile sensing
  • triboelectrification

ASJC Scopus subject areas

  • Materials Science (all)

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