Despite great advances in stimuli-interactive displays, which can directly visualize pressure, temperature, and humidity, a single interactive display platform capable of quantitatively discriminating the dynamic variation of two stimuli has yet to be developed. Here, a tandem interactive sensing display demonstrates not only direct visualization of both pressure and temperature but also the quantitative de-convolution of these two simultaneously varied stimuli. The tandem display consists of five polymer layers vertically stacked on a transparent substrate: a temperature-responsive ionic polymer, field-induced blue light-emitting unit (1), conductive polymer electrode with a parallel gap, field-induced orange-light-emitting unit (2), and topologically structured pressure-responsive layer. Impedance change of the responsive layers upon dynamic temperature and pressure is monitored simultaneously, providing stimuli-interactive electroluminescence of light-emitting units (1) and (2), respectively, when an alternating current (AC) field is applied between two polymer electrodes. Dynamic and simultaneous variation of temperature, 30–80 °C, and pressure, 0.5–20 kPa, are conveniently mapped in 3D coordinates of light intensity (z-axis) and color (x-y plane), producing a 2D contour surface plot. This provides an efficient and quantitative de-convolution of unknown combinations of temperature and pressure stimuli. Furthermore, arrays of the tandem interactive displays broaden the versatility of dynamic visualization of multiple stimuli.
Bibliographical noteFunding Information:
W.J. and E.H.K. contributed equally to this work. This research was supported by the Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (2018M3D1A1058536). This research was also supported by a grant from the National Research Foundation of Korea (NRF) funded by the Korean government (MEST) (No. 2020R1A2B5B03002697) and the Active Polymer Center for Pattern Integration (APCPI). This work was supported by the Technology Innovation Program funded by the Ministry of Trade, Industry & Energy (20012430).
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics