A Liquid‐Metal‐Based Magnetoactive Slurry for Stimuli‐Responsive Mechanically Adaptive Electrodes

Ren, Long; Sun, Shuaishuai; Casillas, Gilberto; Nancarrow, Mitchell; Peleckis, Germanas; Turdy, Mirzat; Du, Kunrong; Xu, Xun; Li, Weihua; Jiang, Lei; Dou, Shi Xue; Du, Yi

doi:10.1002/adma.201802595

Cited by 128 publications

(129 citation statements)

References 37 publications

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“…Combination of LM and magnetic particles can endow composites with tunable mechanical stiffness. Ren et al developed a kind of liquid metal–based magnetoactive slurry that shows the ability to alter viscosity and mechanical stiffness in response to the external applied magnetic field. The Young's modulus can be well‐controlled from approximately kPa to approximately MPa through the change of the field intensity.…”

Section: Applications Of Liquid Metal–based Microfluidic Systemsmentioning

confidence: 99%

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Liquid Metal–Based Soft Microfluidics

Zhu

Wang

Handschuh‐Wang

et al. 2019

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Motivated by the increasing demand of wearable and soft electronics, liquid metal (LM)‐based microfluidics has been subjected to tremendous development in the past decade, especially in electronics, robotics, and related fields, due to the unique advantages of LMs that combines the conductivity and deformability all‐in‐one. LMs can be integrated as the core component into microfluidic systems in the form of either droplets/marbles or composites embedded by polymer materials with isotropic and anisotropic distribution. The LM microfluidic systems are found to have broad applications in deformable antennas, soft diodes, biomedical sensing chips, transient circuits, mechanically adaptive materials, etc. Herein, the recent progress in the development of LM‐based microfluidics and their potential applications are summarized. The current challenges toward industrial applications and future research orientation of this field are also summarized and discussed.

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Section: Applications Of Liquid Metal–based Microfluidic Systemsmentioning

confidence: 99%

Section: Applications Of Liquid Metal–based Microfluidic Systemsmentioning

confidence: 99%

Liquid Metal–Based Soft Microfluidics

Zhu

Wang

Handschuh‐Wang

et al. 2019

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“…Liquid metals are emerging materials which can be used in microfluidics components, sensors, electrodes, phototransistors, flexible and stretchable devices, disease treatment, biomedical field, and in synthesis of low‐dimensional materials . Liquid metals have been shown to form a naturally occurring atomically thin layer of oxide at their interface with air, and using liquid metal as a reaction solvent can give access to a sizable portion of oxide elements including oxides which are intrinsically nonlayered crystals .…”

mentioning

confidence: 99%

2D SnO/In₂O₃ van der Waals Heterostructure Photodetector Based on Printed Oxide Skin of Liquid Metals

Alsaif

Kuriakose

Walia

et al. 2019

Adv Materials Inter

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COMMUNICATION (1 of 8)deployed in the form of van der Waals (vdW) heterostructures that enable fascinating coupled properties from stacked individual layers of 2D sheets which can be exploited in several applications, [2,6,7] including tunneling transistors, [8] quantum hall systems, [9] electrochemical hydrogen evolution reaction, [10] optoelectronics, [4,11] and electronics. [3,12] The p-n junctions are the building blocks of the semiconductor industry, in which the p-n junction heterostructures made from ultrathin materials are of great interest in specialized electronics, optoelectronics, and photonics due to their intriguing coupled properties of the different crystals. [5][6][7]13] Several methods for exfoliation and/or deposition exist such as chemical vapor deposition (CVD), [7] pulsed laser deposition (PLD), [14] molecular beam epitaxy (MBE), [15] pick-and-lift vdW technique, [16] and mechanical exfoliation. [17] These conventional approaches are time consuming and require complicated fabrication processes, [18] yet resulting in devices with small effective areas. [19] Liquid metals are emerging materials which can be used in microfluidics components, [20] sensors, [21] electrodes, [22] phototransistors, [23] flexible and stretchable devices, [24] disease treatment, [22] biomedical field, [22] and in synthesis of low-dimensional materials. [25] Liquid metals have been shown to form a naturally occurring atomically thin layer of oxide at their interface with air, [26][27][28][29] and using liquid metal as a reaction solvent can give access to a sizable portion of oxide elements including oxides which are intrinsically nonlayered crystals. [26] The exfoliated oxides can be converted to sulfides and phosphates. [30] Combination of these atomically thin layers should provide a vast number of vdW heterostructures that are yet to be explored.In this work, atomically thin oxide skin of low melting point liquid metals of tin and indium including p-type tin oxide (SnO) [27] and n-type indium oxide (In 2 O 3 ) [31] are stacked to produce large-area heterostructures with a high degree of homogeneity. Indeed, the p-n vdW heterojunctions feature current rectification properties with exceptionally fast photoresponse times and high sensitivity for UV light. The demonstrated liquid metal synthesis framework offers the possibility of synthesizing and exploring a range of tailored heterostructures for applications in next-generation optoelectronic and photodetection devices.

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“…The magnetic polarity alignment of magnetized microparticles with high mobility when suspended in the LM matrix could be reversibly disordered and rearranged to enable FM‐LMP exhibit macroscopical demagnetization and magnetization. The magnetic LM [ 10 ] has been recently proposed through mixing soft magnetic materials (such as pure iron or nickel microparticles) to obtain many novel functionalities for applications in areas of microfluid, [ 11 ] sensors, [ 12 ] flexible electronics, [ 13,14 ] micromotor, [ 15 ] energy utilization, [ 16 ] and biomedicine. [ 17 ] However, the existing magnetic LM composite would quickly lose the induced magnetization once the external magnetic field was removed.…”

Section: Figurementioning

confidence: 99%

“…Due to the strong interaction between the magnetized microparticles, the alignment of microparticles could induce FM‐LMP mechanical property change, resulting in a remarkable stiffening effect without triggering by an external magnetic field. [ 14,18 ] More importantly, FM‐LMP exhibits unique reconfigurable magnetic polarity. Besides, the high electrical conductivity of the LM matrix enables FM‐LMP to show a unique coupling of electrical and magnetic response.…”

Section: Figurementioning

confidence: 99%

Ferromagnetic Liquid Metal Putty‐Like Material with Transformed Shape and Reconfigurable Polarity

Cao

Xia

et al. 2020

Advanced Materials

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by both the magnetic filler and the matrix. The liquid-like ferrofluids with transformed shape easily lose magnetization once the applied magnetic field is removed, and the solid ferromagnetic materials are hard to be reconfigured as needed.Recently, a reversible paramagnetic-toferromagnetic transformation of ferrofluid droplets by the jamming of a monolayer of magnetic nanoparticles assembled at the water-oil interface was developed. [8] However, this well-designed framework is applicable only within the liquid system. The elastic matrix-based AMC could achieve a limited reconfigurable shape, while the dynamically programmed and reversible magnetic reconfiguration meets a huge challenge. [9] In addition, there is an inevitable mismatch between the electrical and ferromagnetic performances for most AMC materials due to the insulative matrix. It is naturally desirable to design a reconfigurable ferromagnetic material with high electrical conductivity and transformed shape, attracting massive attention due to the promising applications in many fields such as flexible electronics and soft robotics.Here, we present a novel reconfigurable ferromagnetic liquid metal putty-like material (FM-LMP) with high electrical conductivity, prepared by homogenously mixing the room temperature LM of EGaIn (the melting point of 15.7 °C) and ferromagnetic neodymium-iron-boron (NdFeB) microparticles, as illustrated schematically in Figure 1a. The NdFeB microparticles dispersed in the LM matrix were then magnetically saturated through a strong impulse of the magnetic field. It is surprising to find that the magnetization could turn the liquid-like suspension into the solid-like putty-like material. The FM-LMP is thus easily remodeled like modelling clay to various magnet shapes. The macroscopic magnetic performance of the FM-LMP stems from the magnetic orientation alignment of the magnetized NdFeB microparticles immersed in the LM matrix, as illustrated in Figure 1b. The magnetic polarity alignment of magnetized microparticles with high mobility when suspended in the LM matrix could be reversibly disordered and rearranged to enable FM-LMP exhibit macro scopical demagnetization and magnetization. The magnetic LM [10] has been recently proposed through mixing soft magnetic materials (such as pure iron or It is remarkably desirable and challenging to design reconfigurable ferromagnetic materials with high electrical conductivity. This has attracted great attention due to promising applications in many fields such as emerging flexible electronics and soft robotics. However, the shape and magnetic polarity of existing ferromagnetic materials with low conductivity are both hard to be reconfigured, and the magnetization of insulative ferrofluids is easily lost once the external magnetic field is removed. A novel reconfigurable ferromagnetic liquid metal (LM) puttylike material (FM-LMP) with high electrical conductivity and transformed shape, which is prepared through homogenously mixing neodymiumiron-boron microparticles into the gallium-base...

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A Liquid‐Metal‐Based Magnetoactive Slurry for Stimuli‐Responsive Mechanically Adaptive Electrodes

Cited by 128 publications

References 37 publications

Liquid Metal–Based Soft Microfluidics

Liquid Metal–Based Soft Microfluidics

2D SnO/In₂O₃ van der Waals Heterostructure Photodetector Based on Printed Oxide Skin of Liquid Metals

Ferromagnetic Liquid Metal Putty‐Like Material with Transformed Shape and Reconfigurable Polarity

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A Liquid‐Metal‐Based Magnetoactive Slurry for Stimuli‐Responsive Mechanically Adaptive Electrodes

Cited by 128 publications

References 37 publications

Liquid Metal–Based Soft Microfluidics

Liquid Metal–Based Soft Microfluidics

2D SnO/In2O3 van der Waals Heterostructure Photodetector Based on Printed Oxide Skin of Liquid Metals

Ferromagnetic Liquid Metal Putty‐Like Material with Transformed Shape and Reconfigurable Polarity

Contact Info

Product

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2D SnO/In₂O₃ van der Waals Heterostructure Photodetector Based on Printed Oxide Skin of Liquid Metals