A bioinspired multi-functional wearable sensor with an integrated light-induced actuator based on an asymmetric graphene composite film

Hu, Ying; Qi, Ke; Chang, Longfei; Wu, Yucheng; Yang, Lulu; Huang, Majing; Wu, Guan; Lü, Peng; Chen, Wei; Wu, Yucheng

doi:10.1039/c9tc02026h

Cited by 45 publications

(33 citation statements)

References 55 publications

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“…The electrical qualities of graphene offer utility for sensing and have been used in bioinspired robotic sensing applications in recent years. [67,68] Graphite oxide is formed via the oxidation of graphite under strong oxidizing agents in the presence of oxidants. The most common procedures for this oxidation are termed the "Staudenmaier" (utilizing KClO 3 (or NaClO 3 ), HNO 3 , H 2 SO 4 ), "Hummers" (utilizing NaNO 3 , KMnO 4 , H 2 SO 4 ), and "Modified Hummers" (utilizing NaNO 3 , KMnO 4 , H 2 SO 4 ) processes.…”

Section: Carbon-based Materialsmentioning

confidence: 99%

“…Thermal expansion of these materials has recently been exploited by many researchers interested in light-activated actuation for artificial muscles. [30,67,[71][72][73][74][75] Figure 3C shows a Venus flytrap inspired robot that is photothermally actuated. The Figure 2.…”

Section: Carbon-based Materialsmentioning

confidence: 99%

“…This is an adverse effect of the phenomenon referred to as goosebumps, which the authors take inspiration from. [359] Goosebumps occur upon exposure to cooler environments, where hair follicles are Through the process of ethanol saturation and evaporation, pillars are bundled up with macrovoids between bundles and nanovoids within each bundle. The hierarchical structures allow for a two-step cracking process, increasing the strain sensitivity (gauge factor: 107.45%).…”

Section: Strain Sensorsmentioning

confidence: 99%

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Materials, Actuators, and Sensors for Soft Bioinspired Robots

et al. 2020

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This review covers recent advancements in the field of bioinspired soft robotics, with a primary focus on the last 4 years (2017)(2018)(2019)(2020). The review serves as a toolbox for an interdisciplinary audience interested in the most recent bioinspired soft robotic technologies. In particular, it highlights and explores the vital components of soft robots, focusing on the enabling mechanisms and their biological inspirations. The first section discusses the materials used to fabricate soft bio inspired robots. Soft bioinspired actuation and sensing are then discussed, exploring their capabilities and implementation by researchers. Existing challenges and future potentials of bioinspired soft robots are addressed in the concluding remarks. This review provides engineers and scientists with the latest technological advancements and information needed for designing and developing the next generation of soft bioinspired robotic systems. The future applications of these robots will be grand and limitless. Materials Used for Bioinspired Sensors and ActuatorsClassical robotic systems are comprised of rigid bodies, actuators, and sensors. Unfortunately, many of these well-developed actuators and sensors are not transferable to soft bodies. Thus, researchers working in soft robotics need to reinvent actuators and sensors for soft moving bodies. Biological organisms can be an excellent inspiration for designing these soft actuators and sensors, allowing for their integration in both soft and rigid bodies. The design process of soft actuators and sensors have to be initiated with material selection and composition, for they are foundations upon which the actuators and sensors will be built around. Presently, a diversified list of materials has been used in the development of soft robotic systems. This section will cover some of the latest advancements in the last 4 years in the area of material selection and composition for the design and development of soft bioinspired actuators and sensors.During the past 4 years, researchers have produced soft bioinspired actuators and sensors using biological material such as muscle tissue, [23,24] and plant fibers; [25] carbon-based materials such as graphite and graphene oxide (GO) [26][27][28][29][30][31] and carbon nanotubes (CN); [32,33] hydrogel materials such as poly(Nisopropylacrylamide) (PNIPAM), [34,35] liquid crystal elastomers (LCE), [36] dielectric elastomers (DE), [37] and ionic polymermetal composites (IPMC). [38] An overview of these materials (Figure 1), along with their underlying mechanisms, are discussed below.Biological systems can perform complex tasks with high compliance levels. This makes them a great source of inspiration for soft robotics. Indeed, the union of these fields has brought about bioinspired soft robotics, with hundreds of publications on novel research each year. This review aims to survey fundamental advances in bioinspired soft actuators and sensors with a focus on the progress between 2017 and 2020, providing a primer for the materials used i...

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Section: Carbon-based Materialsmentioning

confidence: 99%

Section: Carbon-based Materialsmentioning

confidence: 99%

Section: Strain Sensorsmentioning

confidence: 99%

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Materials, Actuators, and Sensors for Soft Bioinspired Robots

et al. 2020

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“…The numerous kinds of supporting materials for flexible pressure sensors have been investigated. For example, silicone (e.g., PDMS, [ 62 ] Ecoflex), [ 63 ] polyacrylic ester (PEA), [ 64 ] and polyethylene naphthalate (PEN) [ 65 ] ), hydrogels (e.g., polyvinyl alcohol (PVA), [ 66 ] polyacrylamides (PAMs) [ 67 ] ), and biomaterials (e.g., fibroin [ 68 ] ).…”

Section: Piezoresistive Pressure Sensors Based On E‐skinmentioning

confidence: 99%

Recent Progress in Flexible Pressure Sensors Based Electronic Skin

2021

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In recent years, implantable electronics, electronic skin (e-skin), and flexible wearable devices have been developed due to their extensive applications in health monitoring, intelligent robots, and human disease treatment. Tactile sensors are the keys necessary to build skin-inspired electronics. This article reviews the latest progress of e-skin-based flexible pressure sensors, such as piezoresistivity, capacitance, triboelectricity, and piezoelectricity from 2018 up to now. The working principles, structure design, active materials, and performance of numerous flexible pressure sensors are covered in detail. Finally, insights are provided and challenges and future perspectives of flexible pressure sensors in practical applications are discussed.

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“…To this end, several studies have investigated diverse systems, photo-sources and photo-imagers including functional unmanned remote sensing robotics 17 , 18 , high-usability miniature photo-sources 19 , 20 , flexible multi-view stereoscopic photo-imagers 21 , 22 and highly efficient uncooled broadband photo-absorbent materials 23 , 24 . In a related study, Yang et al developed the thermo-phototronic effect 25 , which is based on the combination of thermoelectric effect with the photoelectric effect in some semiconductor materials 26 – 29 .…”

Section: Introductionmentioning

confidence: 99%

Robot-assisted, source-camera-coupled multi-view broadband imagers for ubiquitous sensing platform

Yuasa

Utaki

et al. 2021

Nat Commun

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Multi-functional photo-imaging garners attention towards the development of universal safety-net sensor networks. Although there are urgent needs to comprehensively address the optical information from arbitrarily structured and located targets, investigations on multi-view sensitive broadband monitoring, being independent of the operating environment, are yet to be completed. This study presents a robot-assisted, photo-source and imager implanted, multi-view stereoscopic sensitive broadband photo-monitoring platform with reflective and transmissive switchable modes. A multifaceted photo-thermoelectric device design based on flexible carbon nanotube films facilitates the prototype demonstrations of non-destructive, target-structure-independent, free-form multi-view examinations on actual three-dimensional industrial components. Further functionalisation, namely, a portable system utilising three-dimensional printing and ultraviolet processing, achieves the unification of freely attachable photo-imagers and miniature photo-sources, enabling location-independent operation. Consequently, the non-destructive unmanned, remote, high-speed, omni-directional testing of a defective aerial miniature model winding road-bridge with a robot-assisted photo-source imager built into a multi-axis movable photo-thermoelectric monitor arm is demonstrated.

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A bioinspired multi-functional wearable sensor with an integrated light-induced actuator based on an asymmetric graphene composite film

Abstract: A multi-functional wearable sensor mimicking human skin is constructed based on an asymmetric graphene composite film, showing sensing and light-induced actuation.

Cited by 45 publications

References 55 publications

Materials, Actuators, and Sensors for Soft Bioinspired Robots

Materials, Actuators, and Sensors for Soft Bioinspired Robots

Recent Progress in Flexible Pressure Sensors Based Electronic Skin

Robot-assisted, source-camera-coupled multi-view broadband imagers for ubiquitous sensing platform

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