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.
|Number of pages||7|
|Journal||ACS applied materials & interfaces|
|Publication status||Published - 10 Apr 2019|
- slipping sensor
- tactile sensing
ASJC Scopus subject areas
- Materials Science (all)