A Soft Strain Sensor Based on Ionic and Metal Liquids

Chossat, Jean-Baptiste; Park, Yong‐Lae; Wood, Robert J.; Duchaine, Vincent

doi:10.1109/jsen.2013.2263797

Cited by 298 publications

(247 citation statements)

References 46 publications

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“…While Galinstan makes for an excellent conductor, it alone is not sufficient to achieve sophisticated liquid-based electronic devices. For the realization of liquid-state devices, and eventually systems, controlled heterojunctions must be made between different liquid components 24 , analogous to metal/semiconductor or semiconductor/ semiconductor junctions seen in traditional solid-state devices. More generally, junctions represent the fundamental building blocks for any device technology.…”

Section: Selection Of Liquidsmentioning

confidence: 99%

Highly deformable liquid-state heterojunction sensors

Ota¹,

Chen²,

Lin³

et al. 2014

Nat Commun

235

221

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Mechanically deformable devices and sensors enable conformal coverage of electronic systems on curved and soft surfaces. Sensors utilizing liquids confined in soft templates as the sensing component present the ideal platform for such applications, as liquids are inherently more deformable than solids. However, to date, liquid-based devices have been limited to metal lines based on a single-liquid component given the difficulty in the fabrication of liquidbased junctions due to intermixing. Here, we demonstrate a robust platform for the fabrication of liquid-liquid 'heterojunction' devices, presenting an important advancement towards the realization of liquid-state electronic systems. The device architecture and fabrication scheme we present are generic for different sensing liquids, enabling demonstration of sensors responsive to different stimuli. As a proof of concept, we demonstrate temperature, humidity and oxygen sensors by using different ionic liquids, exhibiting high sensitivity with excellent mechanical deformability arising from the inherent property of the liquid phase.

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Section: Selection Of Liquidsmentioning

confidence: 99%

Highly deformable liquid-state heterojunction sensors

Ota¹,

Chen²,

Lin³

et al. 2014

Nat Commun

235

221

View full text Add to dashboard Cite

show abstract

“…Some examples include nanomaterials of polymers, carbon, semiconductors, and metals, for instance, carbon nanotubes (CNTs) [29][30][31]34,35 , semiconductor and metallic nanowires 3,36,37 , polymer nanofibers 23,24,32 , and metallic nanoparticles [38][39][40] . In contrast, physical sensors employing liquid active sensing components, such as ionic 41,42 and metallic liquids 43 , are classified as liquid-state sensors [41][42][43] . Irrespective of the type of the active sensing element of the sensors, changes in the electrical parameters of a majority of the physical sensing platforms are induced by the mechanical deformations experienced directly by the sensing elements or imposed by the encapsulating assembly on the sensing components under an applied load.…”

Section: Introductionmentioning

confidence: 99%

Emerging flexible and wearable physical sensing platforms for healthcare and biomedical applications

2016

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There are now numerous emerging flexible and wearable sensing technologies that can perform a myriad of physical and physiological measurements. Rapid advances in developing and implementing such sensors in the last several years have demonstrated the growing significance and potential utility of this unique class of sensing platforms. Applications include wearable consumer electronics, soft robotics, medical prosthetics, electronic skin, and health monitoring. In this review, we provide a state-ofthe-art overview of the emerging flexible and wearable sensing platforms for healthcare and biomedical applications. We first introduce the selection of flexible and stretchable materials and the fabrication of sensors based on these materials. We then compare the different solid-state and liquid-state physical sensing platforms and examine the mechanical deformation-based working mechanisms of these sensors. We also highlight some of the exciting applications of flexible and wearable physical sensors in emerging healthcare and biomedical applications, in particular for artificial electronic skins, physiological health monitoring and assessment, and therapeutic and drug delivery. Finally, we conclude this review by offering some insight into the challenges and opportunities facing this field.

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“…Typically, sensors can undergo strains up to 100% (Chossat et al, 2013), with some able to achieve 250% strain (Park et al, 2012) while displaying high accuracy and reliability (Park et al, 2010). The sensors are developed by producing 3D printed molds to form flexible polymers (typically PDMS) with embedded microchannels.…”

Section: Resistive Ionic Sensorsmentioning

confidence: 99%

Soft Manipulators and Grippers: A Review

et al. 2016

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Soft robotics is a growing area of research which utilizes the compliance and adaptability of soft structures to develop highly adaptive robotics for soft interactions. One area in which soft robotics has the ability to make significant impact is in the development of soft grippers and manipulators. With an increased requirement for automation, robotics systems are required to perform task in unstructured and not well defined environments; conditions which conventional rigid robotics are not best suited. This requires a paradigm shift in the methods and materials used to develop robots such that they can adapt to and work safely in human environments. One solution to this is soft robotics, which enables soft interactions with the surroundings while maintaining the ability to apply significant force. This review paper assesses the current materials and methods, actuation methods and sensors which are used in the development of soft manipulators. The achievements and shortcomings of recent technology in these key areas are evaluated, and this paper concludes with a discussion on the potential impacts of soft manipulators on industry and society.

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A Soft Strain Sensor Based on Ionic and Metal Liquids

Cited by 298 publications

References 46 publications

Highly deformable liquid-state heterojunction sensors

Highly deformable liquid-state heterojunction sensors

Emerging flexible and wearable physical sensing platforms for healthcare and biomedical applications

Soft Manipulators and Grippers: A Review

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