A liquid-free conducting ionoelastomer for 3D printable multifunctional self-healing electronic skin with tactile sensing capabilities

Abstract

Conductive elastomers with both softness and conductivity are widely used in the field of flexible electronics. Nonetheless, conductive elastomers typically exhibit prominent problems such as solvent volatilization and leakage, poor...

Bimodal Intelligent Electronic Skin Based on Proximity and Tactile Interaction for Pressure and Configuration Perception

“…As demonstrated in Figure c, the ink used for the 3D printing electrode was mainly prepared from acrylic acid (AA), choline chloride (ChCl), polyethylene glycol diacrylate (PEGDA, MW ∼ 700), and gelatin according to the ratio of Table S1. Of course, the above ratio was the best result obtained through continuous optimization in the early stage, , and the detailed parameters of DLP-3D printing are shown in Table S2. In order to demonstrate the excellent 3D printable ability of the ink, we adopted a top-down additive manufacturing (Figure S2a) method to prepare a series of devices.…”

“…Electronic skin (e-skin) stands as an ingenious wearable sensor, meticulously emulating the perceptual prowess of human skin. − Distinguished by its slender profile, supple texture, and remarkable flexibility, e-skin adeptly transmutes external stimuli into a myriad of discernible output signals. , Its multifaceted utility resonates across an expanse of domains, encompassing human–computer interaction (human–machine interaction (HMI)), artificial intelligence (AI), intelligent medicine, and virtual reality (VR). − Currently developed artificial e-skin has the capability to discern a variety of environmental parameters, including temperature, pressure, humidity, and other physiological data, effectively rivaling the functionalities of human skin. ,− Interestingly, the e-skin not only inherits the sensitive tactile perception capabilities of human skin but also offers superior features beyond those found in natural skin, making it a cornerstone of the next generation of HMI. Consequently, the e-skin with single modalities has been developed, concurrently equipping them with tactile and proximity sensing capabilities to meet various application needs. − On the one hand, the tactile sensing system serves as the fundamental functional unit for information exchange between e-skin and the external environment.…”

High ionic conductive, freezing-resistant and transparent polyurethane based on a novel metal ionic deep eutectic solvent

“…However, the relatively poor ionic conductivity of a DES is an unsolved problem which limits the application of these flexible electronic materials. [35][36][37] To address abovementioned limitations, a highly conductive polyurethane elastomer (CPU) was prepared by introducing a metal-ionic DES as a conductive filler into PU. This kind of DES consists of ethylene glycol (EG) and Zn 2+ through coordination, and metal ions endow the material with relatively high conductivity due to easy ionic migration.…”

“…However, the relatively poor ionic conductivity of a DES is an unsolved problem which limits the application of these flexible electronic materials. 35–37…”

Prosthetic finger for fingertip tactile sensing via flexible chromatic optical waveguides

“…It has the advantages of simple manufacturing, high speed and high precision measurement, transmission/sensing integration, powerful multiplexing, conformal deployment capability, and high environmental stability. Optical fiber sensing technology can make up for the shortcomings of the existing electrical (piezo-resistive, [1][2][3][4][5][6][7][8][9] piezoelectric, [10][11][12][13][14][15] capacitive, [16][17][18][19][20][21][22] etc.) sensing technologies, and is especially suitable for use in harsh environments such as flammable and explosive, strictly limited space and strong electromagnetic interference.…”