Artificial multimodal receptors based on ion relaxation dynamics

We present a deformable artificial multimodal ionic receptor that can differentiate thermal and mechanical information without signal interference. Two variables are derived from the analysis of the ion relaxation dynamics: the charge relaxation time as a strain-insensitive intrinsic variable to measure absolute temperature and the normalized capacitance as a temperature-insensitive extrinsic variable to measure strain. The artificial receptor with a simple electrode-electrolyte-electrode structure simultaneously detects temperature and strain by measuring the variables at only two measurement frequencies. The human skin–like multimodal receptor array, called multimodal ion-electronic skin (IEM-skin), provides real-time force directions and strain profiles in various tactile motions (shear, pinch, spread, torsion, and so on).

Source: ScienceNOW - November 19, 2020 Category: Science Authors: You, I., Mackanic, D. G., Matsuhisa, N., Kang, J., Kwon, J., Beker, L., Mun, J., Suh, W., Kim, T. Y., Tok, J. B.- H., Bao, Z., Jeong, U. Tags: Physics, Applied, Materials Science reports Source Type: news