A Flexible Bimodal Sensor Array for Simultaneous Sensing of Pressure and Temperature

Sensory receptors in human skin transmit a wealth of tactile and thermal signals from external environments to the brain. Despite advances in our understanding of mechano-and thermosensation, replication of these unique sensory characteristics in artificial skin and prosthetics remains challenging. Recent efforts to develop smart prosthetics, which exploit rigid and/or semi-flexible pressure, strain and temperature sensors, provide promising routes for sensor-laden bionic systems, but with limited stretchability, detection range and spatiotemporal resolution. Here we demonstrate smart prosthetic skin instrumented with ultrathin, single crystalline silicon nanoribbon strain, pressure and temperature sensor arrays as well as associated humidity sensors, electroresistive heaters and stretchable multi-electrode arrays for nerve stimulation. This collection of stretchable sensors and actuators facilitate highly localized mechanical and thermal skin-like perception in response to external stimuli, thus providing unique opportunities for emerging classes of prostheses and peripheral nervous system interface technologies.

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“…13). Further increases in sensitivity can be achieved by incorporating novel nanomaterials/microstructures 6,30 .…”

Section: Resultsmentioning

confidence: 99%

Stretchable silicon nanoribbon electronics for skin prosthesis

et al. 2014

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“…Temperature sensors have emerged at the right moment to detect temperature variations and prevent the advent of disease 27, 28. Wearable temperature sensors capable of real‐time monitoring of human health‐related parameters can offer new approaches to manage the health status and performance of individuals to enable many emerging applications, such as e‐skin, smart watches, robot sensors, human–machine interfaces, health care, human activity monitoring, and environmental temperature measurement 29, 30, 31, 32.…”

Section: Introductionmentioning

confidence: 99%

3D Printing Fiber Electrodes for an All‐Fiber Integrated Electronic Device via Hybridization of an Asymmetric Supercapacitor and a Temperature Sensor

et al. 2018

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Wearable fiber‐shaped electronic devices have drawn abundant attention in scientific research fields, and tremendous efforts are dedicated to the development of various fiber‐shaped devices that possess sufficient flexibility. However, most studies suffer from persistent limitations in fabrication cost, efficiency, the preparation procedure, and scalability that impede their practical application in flexible and wearable fields. In this study, a simple, low‐cost 3D printing method capable of high manufacturing efficiency, scalability, and complexity capability to fabricate a fiber‐shaped integrated device that combines printed fiber‐shaped temperature sensors (FTSs) with printed fiber‐shaped asymmetric supercapacitors (FASCs) is developed. The FASCs device can provide stable output power to FTSs. Moreover, the temperature responsivity of the integrated device is 1.95% °C−1.

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“…A PSR layer and organic diodes were laminated together with the transistor film to achieve these functions. Moreover, via direct integration of piezopyroelectric and piezothermoresistive materials into the transistor as a gate dielectric and organic semiconductor channel, Park and co‐workers also fabricated a real‐time multi‐stimuli‐responsive sensor array that could distinguish between the temperature and pressure signals by analyzing the change in the amplitude and offset values of the drain current with AC gate biasing 100. Recently, large‐area devices with additional modular components based on a unique sensing mechanism to perceive the complex external environment were subsequently developed to attempt to realistically simulate every outstanding feature of human skin 101.…”

Section: Recent Developments In Novel E‐skinmentioning

confidence: 99%

Recent Progress in Electronic Skin

et al. 2015

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The skin is the largest organ of the human body and can sense pressure, temperature, and other complex environmental stimuli or conditions. The mimicry of human skin's sensory ability via electronics is a topic of innovative research that could find broad applications in robotics, artificial intelligence, and human–machine interfaces, all of which promote the development of electronic skin (e‐skin). To imitate tactile sensing via e‐skins, flexible and stretchable pressure sensor arrays are constructed based on different transduction mechanisms and structural designs. These arrays can map pressure with high resolution and rapid response beyond that of human perception. Multi‐modal force sensing, temperature, and humidity detection, as well as self‐healing abilities are also exploited for multi‐functional e‐skins. Other recent progress in this field includes the integration with high‐density flexible circuits for signal processing, the combination with wireless technology for convenient sensing and energy/data transfer, and the development of self‐powered e‐skins. Future opportunities lie in the fabrication of highly intelligent e‐skins that can sense and respond to variations in the external environment. The rapidly increasing innovations in this area will be important to the scientific community and to the future of human life.

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A Flexible Bimodal Sensor Array for Simultaneous Sensing of Pressure and Temperature

Cited by 384 publications

References 37 publications

Stretchable silicon nanoribbon electronics for skin prosthesis

Stretchable silicon nanoribbon electronics for skin prosthesis

3D Printing Fiber Electrodes for an All‐Fiber Integrated Electronic Device via Hybridization of an Asymmetric Supercapacitor and a Temperature Sensor

Recent Progress in Electronic Skin

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