Tactile sensors with large-scale
array and high sensitivity is essential for human–machine interaction,
smart wearable devices, and mobile networks. Here, a transparent and
flexible triboelectric sensing array (TSA) with fingertip-sized pixels
is demonstrated by integrating ITO electrodes, FEP film, and signal
transmission circuits on an undivided palm-sized polyethylene terephthalate
substrate. The sensing pixels can be triggered by the corresponding
external contact to induce the electrostatic potential in the transparent
electrodes without power consumption, which is individually recognized
by the sensor. By testing the response of the pixels, the electrical
characterization is systematically investigated. The proposed TSA
exhibits excellent durability, independence, and synchronicity, which
is able to realize real-time touch sensing, spatial mapping, and motion
monitoring. The integrated TSA has great potential for an active tactile
system, human–machine interface, wearable electronics, private
communication, and advanced security identification
