Interfacing of surfaces with gallium-based liquid metals – approaches for mitigation and augmentation of liquid metal adhesion on surfaces

Handschuh‐Wang, Stephan; Zhu, Lifei; Gan, Tiansheng; Wang, Tao; Wang, Ben; Zhou, Xuechang

doi:10.1016/j.apmt.2020.100868

Cited by 37 publications

(56 citation statements)

References 189 publications

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“…The presence of the surface oxidation layer on the used LM particles is clearly supported from the Ga 3d x-ray photoelectron spectroscopy (XPS) spectrum ( Fig. 3C ) ( 51 , 52 ). Further evidence for the dipolar interactions is provided by the infrared spectral comparison between pure PVDF-HFP-TFE and PVDF-HFP-TFE/LM composite ( Fig.…”

Section: Resultsmentioning

confidence: 71%

Conductance-stable liquid metal sheath-core microfibers for stretchy smart fabrics and self-powered sensing

et al. 2021

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Highly conductive and stretchy fibers are crucial components for smart fabrics and wearable electronics. However, most of the existing fiber conductors are strain sensitive with deteriorated conductance upon stretching, and thus, a compromised strategy via introducing merely geometric distortion of conductive path is often used for stable conductance. Here, we report a coaxial wet-spinning process for continuously fabricating intrinsically stretchable, highly conductive yet conductance-stable, liquid metal sheath-core microfibers. The microfiber can be stretched up to 1170%, and upon fully activating the conductive path, a very high conductivity of 4.35 × 104 S/m and resistance change of only 4% at 200% strain are realized, arising from both stretch-induced channel opening and stretching out of tortuous serpentine conductive path of the percolating liquid metal network. Moreover, the microfibers can be easily woven into an everyday glove or fabric, acting as excellent joule heaters, electrothermochromic displays, and self-powered wearable sensors to monitor human activities.

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Section: Resultsmentioning

confidence: 71%

Conductance-stable liquid metal sheath-core microfibers for stretchy smart fabrics and self-powered sensing

et al. 2021

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“…Although gallium‐based liquid metals have high surface tension (≈700 mN m −1 ), the high‐yield‐stress native oxide layer reduces the surface tension of liquid metals, so the liquid metal can take various structures. [ 17,31,32 ] With the aid of negligible volatility and low toxicity, gallium‐based alloys have been actively researched as a material for electronic and biomedical applications. [ 33 ] In this section, featured properties of liquid metals for healthcare electronic devices are discussed.…”

Section: Properties Of Liquid Metalsmentioning

confidence: 99%

Liquid Metal‐Based Soft Electronics for Wearable Healthcare

Park

Lee

Jang

et al. 2021

Adv Healthcare Materials

156

100

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Wearable healthcare devices have garnered substantial interest for the realization of personal health management by monitoring the physiological parameters of individuals. Attaining the integrity between the devices and the biological interfaces is one of the greatest challenges to achieving high‐quality body information in dynamic conditions. Liquid metals, which exist in the liquid phase at room temperatures, are advanced intensively as conductors for deformable devices because of their excellent stretchability and self‐healing ability. The unique surface chemistry of liquid metals allows the development of various sensors and devices in wearable form. Also, the biocompatibility of liquid metals, which is verified through numerous biomedical applications, holds immense potential in uses on the surface and inside of a living body. Here, the recent progress of liquid metal‐based wearable electronic devices for healthcare with respect to the featured properties and the processing technologies is discussed. Representative examples of applications such as biosensors, neural interfaces, and a soft interconnection for devices are reviewed. The current challenges and prospects for further development are also discussed, and the future directions of advances in the latest research are explored.

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“…1,10,11) So ist es für Anwendungen vielfach ein Problem, dass sich feste Metalle in Flüssigmetallen auflösen. 4)…”

Section: Es Fehlen Noch Grundlagenunclassified

Leitfähig und verformbar – Flüssigmetalle

Wang¹,

Stadler²

2021

Nachr Chem

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Interfacing of surfaces with gallium-based liquid metals – approaches for mitigation and augmentation of liquid metal adhesion on surfaces

Cited by 37 publications

References 189 publications

Conductance-stable liquid metal sheath-core microfibers for stretchy smart fabrics and self-powered sensing

Conductance-stable liquid metal sheath-core microfibers for stretchy smart fabrics and self-powered sensing

Liquid Metal‐Based Soft Electronics for Wearable Healthcare

Leitfähig und verformbar – Flüssigmetalle

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