Ionic tactile sensors as promising biomaterials for artificial skin: Review of latest advances and future perspectives

Scaffaro, Roberto; Citarrella, Maria Clara

doi:10.1016/j.eurpolymj.2021.110421

Cited by 39 publications

(25 citation statements)

References 73 publications

(96 reference statements)

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“…[25] Owing to the development of superhydrophobic chemistry, microfluidics, and flexible electronics, supercapacitive interfacial IFS with high sensitivity were initially formed through direct contact between ionic liquid and electrodes. [26] Their capacitive values change significantly when subjected to a slight external mechanical force. Compared to conventional capacitive sensors, supercapacitive interfacial IFS based on an EDL can produce an ultrahigh capacitance per unit area up to several µF cm −2 in the sub-MHz spectrum, where the capacitive value increased by more than 1000 times.…”

Section: Supercapacitive Interface Effectmentioning

confidence: 99%

Ionic Flexible Sensors: Mechanisms, Materials, Structures, and Applications

Zhao

Wang

Tang

et al. 2022

Adv Funct Materials

108

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Over the past few decades, flexible sensors have been developed from the "electronic" level to the "iontronic" level, and gradually to the "ionic" level. Ionic flexible sensors (IFS) are one kind of advanced sensors that are based on the concept of ion migration. Compared to conventional electronic sensors, IFS can not only replicate the topological structures of human skin, but also are capable of achieving tactile perception functions similar to that of human skin, which provide effective tools and methods for narrowing the gap between conventional electronics and biological interfaces. In this review, the latest research and developments on several typical sensing mechanisms, compositions, structural design, and applications of IFS are comprehensively reviewed. Particularly, the development of novel ionic materials, structural designs, and biomimetic approaches has resulted in the development of a wide range of novel and exciting IFS, which can effectively sense pressure, strain, and humidity with high sensitivity and reliability, and exhibit self-powered, self-healing, biodegradability, and other properties of the human skin. Furthermore, the typical applications of IFS in artificial skin, human-interactive technologies, wearable health monitors, and other related fields are reviewed. Finally, the perspectives on the current challenges and future directions of IFS are presented.

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Section: Supercapacitive Interface Effectmentioning

confidence: 99%

Ionic Flexible Sensors: Mechanisms, Materials, Structures, and Applications

Zhao

Wang

Tang

et al. 2022

Adv Funct Materials

108

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“…This parameter is crucial for the lifetime of a sensor, especially of the tactile sensor, which undergoes repeated mechanical impact in the way of scratching, delamination, bending, stretching, etc. [ 101 ]. In long-term applications, the ability of self-healing is highly important to the reduction in electronic waste to meet the requirements of environmental protection.…”

Section: Design Aspects Of Sensorsmentioning

confidence: 99%

Conducting Polymers for the Design of Tactile Sensors

et al. 2022

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This paper provides an overview of the application of conducting polymers (CPs) used in the design of tactile sensors. While conducting polymers can be used as a base in a variety of forms, such as films, particles, matrices, and fillers, the CPs generally remain the same. This paper, first, discusses the chemical and physical properties of conducting polymers. Next, it discusses how these polymers might be involved in the conversion of mechanical effects (such as pressure, force, tension, mass, displacement, deformation, torque, crack, creep, and others) into a change in electrical resistance through a charge transfer mechanism for tactile sensing. Polypyrrole, polyaniline, poly(3,4-ethylenedioxythiophene), polydimethylsiloxane, and polyacetylene, as well as application examples of conducting polymers in tactile sensors, are overviewed. Attention is paid to the additives used in tactile sensor development, together with conducting polymers. There is a long list of additives and composites, used for different purposes, namely: cotton, polyurethane, PDMS, fabric, Ecoflex, Velostat, MXenes, and different forms of carbon such as graphene, MWCNT, etc. Some design aspects of the tactile sensor are highlighted. The charge transfer and operation principles of tactile sensors are discussed. Finally, some methods which have been applied for the design of sensors based on conductive polymers, are reviewed and discussed.

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“…To this end, wearable sensors, which are regarded as the next generation of medical diagnostic platforms due to their portability and lightweight characteristics, are gradually stepping into the spotlight and have received increasing appreciation. [1][2][3][4][5][6][7][8][9] Physiological parameters can directly reflect the status of human health. 10 The real-time monitoring and evaluation of physiological parameters can not only provide immediate early warning and treatment for diseases but also offer valuable information for rehabilitation evaluation.…”

Section: Introductionmentioning

confidence: 99%