Flexible Temperature Sensor Integrated with Soft Pneumatic Microactuators for Functional Microfingers

Konishi, Satoshi; Hirata, Akiya

doi:10.1038/s41598-019-52022-x

Cited by 35 publications

(34 citation statements)

References 38 publications

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“…Thermocouple sensors are fabricated using two different metals such as copper/constantan, iron/constantan or chromel/alumel. Thermocouples work on the basis of the Seebeck effect [33]. Thermistors contain materials that vary in resistance with changes in temperature.…”

Section: Working Mechanismmentioning

confidence: 99%

Review of Materials and Fabrication Methods for Flexible Nano and Micro-Scale Physical and Chemical Property Sensors

et al. 2021

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The use of flexible sensors has tripled over the last decade due to the increased demand in various fields including health monitoring, food packaging, electronic skins and soft robotics. Flexible sensors have the ability to be bent and stretched during use and can still maintain their electrical and mechanical properties. This gives them an advantage over rigid sensors that lose their sensitivity when subject to bending. Advancements in 3D printing have enabled the development of tailored flexible sensors. Various additive manufacturing methods are being used to develop these sensors including inkjet printing, aerosol jet printing, fused deposition modelling, direct ink writing, selective laser melting and others. Hydrogels have gained much attention in the literature due to their self-healing and shape transforming. Self-healing enables the sensor to recover from damages such as cracks and cuts incurred during use, and this enables the sensor to have a longer operating life and stability. Various polymers are used as substrates on which the sensing material is placed. Polymers including polydimethylsiloxane, Poly(N-isopropylacrylamide) and polyvinyl acetate are extensively used in flexible sensors. The most widely used nanomaterials in flexible sensors are carbon and silver due to their excellent electrical properties. This review gives an overview of various types of flexible sensors (including temperature, pressure and chemical sensors), paying particular attention to the application areas and the corresponding characteristics/properties of interest required for such. Current advances/trends in the field including 3D printing, novel nanomaterials and responsive polymers, and self-healable sensors and wearables will also be discussed in more detail.

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Section: Working Mechanismmentioning

confidence: 99%

Review of Materials and Fabrication Methods for Flexible Nano and Micro-Scale Physical and Chemical Property Sensors

et al. 2021

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“…Thermocouples work on the basis of the Seebeck effect [29]. Thermistors contain materials that varies in resistance with changes in temperature.…”

Section: Working Mechanismmentioning

confidence: 99%

Review of Materials and Fabrication Methods for Flexible Nano and Micro-Scale Physical Property Sensors

Nyabadza¹,

Vázquez²,

Coyle³

et al. 2021

Preprint

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The use of flexible sensors has tripled over the last decade due to the increased demand in various fields including health monitoring, food packaging, electronic skins and soft robotics. Flexible sensors have the ability to be bent and stretched during use and can still maintain their electrical and mechanical properties. This gives them an advantage over rigid sensors that lose their sensitivity when subject to bending. Advancements in 3D printing have enabled the development of tailored flexible sensors. Various additive manufacturing methods are being used to develop these sensors including inkjet printing, aerosol jet printing, fused deposition modelling, direct ink writing, selective laser melting and others. Hydrogels have gained much attention in the literature due to their self-healing and shape transforming. Self-healing enables the sensor to recover from damages such as cracks and cuts incurred during use and this enables the sensor to have a longer operating life and stability. Various polymers are used as substrates on which the sensing conductive material is placed. Polymers including polydimethylsiloxane (PDMS), polyvinyl acetate (PVA), and Kapton are extensively used in flexible sensors. The most widely used nanomaterials in flexible sensors are carbon and silver, however, other nanomaterials such as iron, copper, manganese dioxide and gold are also used to provide controlled levels of conductivity or other functional properties.

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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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Flexible Temperature Sensor Integrated with Soft Pneumatic Microactuators for Functional Microfingers

Cited by 35 publications

References 38 publications

Review of Materials and Fabrication Methods for Flexible Nano and Micro-Scale Physical and Chemical Property Sensors

Review of Materials and Fabrication Methods for Flexible Nano and Micro-Scale Physical and Chemical Property Sensors

Review of Materials and Fabrication Methods for Flexible Nano and Micro-Scale Physical Property Sensors

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

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