Liquid Metal Patterning and Unique Properties for Next‐Generation Soft Electronics

Advanced Science, Journal Year: 2023, Volume and Issue: 10(6)

Published: Jan. 15, 2023

Room-temperature liquid metal (LM)-based electronics is expected to bring advancements in future soft owing its conductivity, conformability, stretchability, and biocompatibility. However, various difficulties arise when patterning LM because of rheological features such as fluidity surface tension. Numerous attempts are made overcome these difficulties, resulting LM-patterning methods. An appropriate choice method based on comprehensive understanding necessary fully utilize the unique properties. Therefore, authors aim provide thorough knowledge about methods properties for LM-based electronics. First, essential considerations investigated. Then, methods-serial-patterning, parallel-patterning, intermetallic bond-assisted patterning, molding/microfluidic injection-are categorized Finally, perspectives with provided. They include outstanding biocompatibility, permeability, restorability, recyclability. Also, they areas radio frequency electronics, robots, heterogeneous catalyst. devices permeate daily lives if aforementioned analyzed utilized.

Language: Английский

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Liquid Metal-Doped Conductive Hydrogel for Construction of Multifunctional Sensors

Analytical Chemistry, Journal Year: 2023, Volume and Issue: 95(7), P. 3811 - 3820

Published: Feb. 7, 2023

Interest in wearable and stretchable multifunctional sensors has grown rapidly recent years. The sensing elements must accurately detect external stimuli to expand their applicability as sensors. However, the sensor's self-healing adhesion a target object have been major challenges developing such practical versatile devices. In this study, we prepared hydrogel (LM-SA-PAA) composed of liquid metal (LM), sodium alginate (SA), poly(acrylic acid) (PAA) with ultrastretchable, excellent self-healing, self-adhesive, high-sensitivity capabilities that enable conformal contact between sensor skin even during dynamic movements. performance stems from its double cross-linked networks, including physical chemical networks. cross-link formed by ionic interaction carboxyl groups PAA gallium ions provide reversible autonomous repair properties, whereas covalent bond provides stable strong network. Alginate forms microgel shell around LM nanoparticles via coordination Ga ions. addition offering exceptional colloidal stability, sufficient polar groups, ensuring adheres diverse substrates. Based on efficient electrical pathway provided LM, exhibited strain sensitivity enabled detection various human motions electrocardiographic monitoring. preparation method is simple can be used for low-cost fabrication sensors, which broad application prospects human-machine interface compatibility medical

Language: Английский

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Flexible, Permeable, and Recyclable Liquid‐Metal‐Based Transient Circuit Enables Contact/Noncontact Sensing for Wearable Human–Machine Interaction

Small Methods, Journal Year: 2023, Volume and Issue: 7(4)

Published: Feb. 22, 2023

The past several years have witnessed a rapid development of intelligent wearable devices. However, despite the splendid advances, creation flexible human-machine interfaces that synchronously possess multiple sensing capabilities, wearability, accurate responsivity, sensitive detectivity, and fast recyclability remains substantial challenge. Herein, convenient yet robust strategy is reported to craft transient circuits via stencil printing liquid metal conductor on water-soluble electrospun film for interaction. Due inherent within porous substrate, feature high-resolution, customized patterning viability, attractive permeability, excellent electroconductivity, superior mechanical stability. More importantly, such display appealing noncontact proximity capabilities while maintaining compelling tactile performance, which unattainable by traditional systems with compromised contact sensing. As such, circuit utilized as sensors practical multifunctionality, including information transfer, smart identification, trajectory monitoring. Furthermore, an interface composed fabricated realize specific goals wireless object control overload alarm. are quickly efficiently recycled toward high economic environmental values. This work opens vast possibilities generating high-quality electronics advanced applications in soft systems.

Language: Английский

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Carbon nanotube/liquid metal hybrid coating-based flexible pressure piezoresistive sensors

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 481, P. 148637 - 148637

Published: Jan. 8, 2024

Language: Английский

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Naturally Crosslinked Biocompatible Carbonaceous Liquid Metal Aqueous Ink Printing Wearable Electronics for Multi-Sensing and Energy Harvesting

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: March 11, 2024

Achieving flexible electronics with comfort and durability comparable to traditional textiles is one of the ultimate pursuits smart wearables. Ink printing desirable for e-textile development using a simple inexpensive process. However, fabricating high-performance atop good dispersity, stability, biocompatibility, wearability high-resolution, large-scale manufacturing, practical applications has remained challenging. Here, water-based multi-walled carbon nanotubes (MWCNTs)-decorated liquid metal (LM) inks are proposed carbonaceous gallium-indium micro-nanostructure. With assistance biopolymers, sodium alginate-encapsulated LM droplets contain high carboxyl groups which non-covalently crosslink silk sericin-mediated MWCNTs. E-textile can be prepared subsequently via technique natural waterproof triboelectric coating, enabling flexibility, hydrophilicity, breathability, wearability, conductivity, excellent versatility, without any artificial chemicals. The obtained used in various designable patterns circuits. Multi-sensing recognizing complex human motions, breathing, phonation, pressure distribution demonstrated repeatable reliable signals. Self-powered energy-harvesting capabilities also presented by driving electronic devices lighting LEDs. As proof concept, this work provides new opportunities scalable sustainable way develop novel wearable clothing future commercial applications.

Language: Английский

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