共查询到20条相似文献，搜索用时 15 毫秒
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Ziyue Zeng;Chenyang Wang;Mengqi Zeng;Lei Fu; 《Small (Weinheim an der Bergstrasse, Germany)》2024,20(26):2311099
Gallium-based (Ga-based) liquid metals have attracted considerable interest due to their low melting points, enabling them to feature both liquid properties and metallic properties at room temperature. In light of this, Ga-based liquid metals also possess excellent deformability, high electrical and thermal conductivity, superior metal affinity, and unique self-limited surface oxide, making them popular functional materials in energy storage. This provides a possibility to construct high-performance rechargeable batteries that are deformable, free of dendrite growth, and so on. This review primarily starts with the property of Ga-based liquid metal, and then focuses on the potential applications in rechargeable batteries by exploiting these advantages, aiming to construct the correlation between properties and structures. The glorious applications contain interface protection, self-healing electrode construction, thermal management, and flexible batteries. Finally, the opportunities and obstacles for the applications of liquid metal in batteries are presented. 相似文献
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We analytically determine the interface delocalization (or wetting) transition phase boundary in the limit of strongly type-I superconductors. In particular, within Ginzburg–Landau theory we derive an analytic expression for the reduced surface tension, SC/N, of a type-I superconductor. We find that the truncated expansion
(where is the Ginzburg–Landau parameter) is so accurate in the entire type-I regime
that derivation of higher-order terms is unnecessary. We further derive an expression for the wall/superconductor interfacial tension which again proves accurate across a broad range of values. These expansions allow us to locate the low- interface delocalization phase boundary accurately, complementing previous numerical results for the wetting phase diagram. 相似文献
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Measurement of the Surface Tension of Undercooled Liquid Ti90Al6V4 by the Oscillating Drop Technique
The surface tension of liquid Ti90Al6V4 was measured. The samples have been processed containerlessly by electromagnetic levitation, which allows the handling of highly reactive materials and measurements in the undercooled temperature region. The use of digital image processing allows the identification of oscillation modes and calculation of the surface tension from the l = 2 and m = 0, m = 2 oscillation modes. A linear least squares fit to the data showed the following temperature dependence:
= 1.389 ± 0.09 – 9.017 × 10–4 ± 5.64 × 10–5(T – 1660°C) [Nm–1] 相似文献
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Rui Chen Qin Xiong Rui‐Zhou Song Kai‐Lin Li Yu‐Xin Zhang Cheng Fang Jiang‐Long Guo 《Advanced Materials Interfaces》2019,6(20)
Gallium‐based liquid metal alloys (LMAs) are extensively studied and used recently due to their excellent fluidity, high conductivity, and low evaporation pressure. Nonwettable and nonsticky liquid metal marbles (LMMs) are also developed to address the stickiness issue of oxidized LMAs in air. Current LMMs, however, lack acceptable controllability, shape stability, and robustness, greatly limiting their practical application. Here, a magnetically controllable liquid metal marble (MCLMM) that is noncorrosive and nonsticky, and exhibits good elasticity and mechanical robustness, is presented. The as‐obtained MCLMM consists of a soft liquid metal core coated with a mixture of ferronickel (FN) and polyethylene (PE) microparticles. This combined structure shows excellent magnetic controllability, good elasticity, and favorable mechanical robustness, as demonstrated by contact angle measurements, rolling angle measurements, corrosive testing, magnetically actuated locomotion, and impact and bounce tests. The MCLMM also possesses satisfying stability in air and stability against temperature changing. In addition, its capabilities are demonstrated as a robotic motor, controllable obstacle cleaner, and a flexible switch for circuits, which shows the potential for MCLMM applications in robotic locomotion and manipulation, electronic circuits, and beyond. 相似文献
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《Advanced Materials Technologies》2018,3(8)
Paper electronics is considered very environmentally friendly, but effective recyclability of metallic circuits on paper still needs more improvement. Therefore, liquid metal (Galinstan) circuits based on the reversible conversion from particles to wires are fabricated on paper using mechanical methods, i.e., mechanical sintering and sonication. Line‐width of liquid metal (LM) circuit is kept in the range of 10 µm to ≥0.5 mm by controlling the sintering force. The results demonstrate that LM circuits exhibit high electrical stability during deformation, as resistance changes only ≤4% after the passage of 10 000 folding cycles. Meanwhile, LM particles spread on paper's porous structures, have enhanced the thermal diffusivity of paper and make paper electronics work in a facile temperature when integrated with high density units. More importantly, the reborn circuits exhibit almost identical electrical stability under deformation and thermal characteristic with pristine ones, thus making LM circuits environmentally friendly during their whole life span. 相似文献
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Wenyu Zhong;Yuan Chi;Ruohan Yu;Charlie Kong;Shujie Zhou;Chen Han;Jitraporn Vongsvivut;Guangzhao Mao;Kourosh Kalantar-Zadeh;Rose Amal;Jianbo Tang;Xunyu Lu; 《Small (Weinheim an der Bergstrasse, Germany)》2024,20(49):2403939
Copper-based catalysts exhibit high activity in electrochemical CO2 conversion to value-added chemicals. However, achieving precise control over catalysts design to generate narrowly distributed products remains challenging. Herein, a gallium (Ga) liquid metal-based approach is employed to synthesize hierarchical nanoporous copper (HNP Cu) catalysts with tailored ligament/pore and crystallite sizes. The nanoporosity and polycrystallinity are generated by dealloying intermetallic CuGa2 formed after immersing pristine Cu foil in liquid Ga in a basic or acidic solution. The liquid metal-based approach allows for the transformation of monocrystalline Cu to the polycrystalline HNP Cu with enhanced CO2 reduction reaction (CO2RR) performance. The dealloyed HNP Cu catalyst with suitable crystallite size (22.8 nm) and nanoporous structure (ligament/pore size of 45 nm) exhibits a high Faradaic efficiency of 91% toward formate production under an applied potential as low as −0.3 VRHE. The superior CO2RR performance can be ascribed to the enlarged electrochemical catalytic surface area, the generation of preferred Cu facets, and the rich grain boundaries by polycrystallinity. This work demonstrates the potential of liquid metal-based synthesis for improving catalysts performance based on structural design, without increasing compositional complexity. 相似文献
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Hao Peng Yan Peng Jingyun Lan Jiancheng Zhou Jiuyang Zhang 《Advanced Materials Technologies》2023,8(2):2200740
Liquid metals (LMs) and conjugated polymers are both critically important materials in modern technologies including soft robotics, printable circuits, and stretchable electronics. Although broadly applied, the joint use of LMs and conjugated polymers are rarely explored due to the notoriously interfacial challenges of the high surface tension of LMs and the unfavorable rigid backbones of conjugated polymer chains. This work successfully introduced conjugated polymers (poly(3,4-ethylenedioxythiophene):polystyrene sulfonate, (PEDOT:PSS)) into the system of liquid metals to provide a highly stable, aqueous, and electrically conductive ink (LM-PEDOT:PSS inks, LMPInks) for flexible electronics. The PSS segments act as a strong ionic bridge to effectively stabilize core-shell structure of the PEDOT and LMs in the homogenous ink. Different from previous insulated LM-inks, LMPInk is aqueous and more importantly, electrically conductive without posttreatments due to the intrinsically conductive PEDOT:PSS. Interestingly, with low content of LM particles (<2 wt%), the printed circuits inherit the valuable transparency of PEDOT:PSS (transmission >92% in visible region), which has never been observed in LM-based organic systems. Furthermore, such LMPInks show distinguished electrical robustness, which can automatically recover their initial electrical conductivity even after severe physical damage. With the above phenomenal advantages, various flexible circuits on different substrates are successfully provided. 相似文献
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Yaming Liu Tiyun Yang Yuyan Zhang Gang Qu Shanshan Wei Zhou Liu Tiantian Kong 《Advanced materials (Deerfield Beach, Fla.)》2019,31(39)
Hydrogel bioelectronics that can interface biological tissues and flexible electronics is at the core of the growing field of healthcare monitoring, smart drug systems, and wearable and implantable devices. Here, a simple strategy is demonstrated to prototype all‐hydrogel bioelectronics with embedded arbitrary conductive networks using tough hydrogels and liquid metal. Due to their excellent stretchability, the resultant all‐hydrogel bioelectronics exhibits stable electrochemical properties at large tensile stretch and various modes of deformation. The potential of fabricated all‐hydrogel bioelectronics is demonstrated as wearable strain sensors, cardiac patches, and near‐field communication (NFC) devices for monitoring various physiological conditions wirelessly. The presented simple platform paves the way of implantable hydrogel electronics for Internet‐of‐Things and tissue–machine interfacing applications. 相似文献
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微观结构表面接触角模型及其润湿性 总被引：1，自引：0，他引：1
润湿性是固体表面的重要性质之一,固液界面润湿性与表面微观结构、界面能等有关.研究了微观结构固体表面固液界面润湿性以及界面能、液滴重力、微观结构参数对润湿性的影响.分析表明,Young、Wenzel、Cassie、Cassie-Baxter等4种接触角模型分别把固体表面看成光滑、粗糙(液滴完全填满)、粗糙(液滴不填充)以及粗糙(液滴部分填充),后3种模型可用于实际固体表面,并可在3种状态下实现转换.设计了方柱凹坑、圆柱凹坑等微观结构表面,调控横径比、纵径比、深径比等微观结构参数,可以改变固液界面润湿性.研究发现,液滴重力对表面接触角存在稍许影响,界面能的大小决定着材料表面的疏/亲水性. 相似文献
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Hongji Guo Xiaofeng Lv Wenyuan Chen Ya Zhong Wuhao Zou Lianqing Liu Haibo Yu 《Advanced Materials Technologies》2023,8(1):2200749
Flexible electronic devices containing gallium-based liquid metal (GbLM) play an important role in human–computer interaction and the sensing elements of motion monitoring owing to the intrinsic fluidity and metallic conductivity of the GbLM. High-aspect-ratio liquid-metal patterns have 3D structures, which can increase the heat radiating area of the circuits and the stability of the sensors. However, fabricating high-aspect-ratio patterns in high resolution is challenging owing to easy oxidation at the surface layer and the high surface tension of the liquid metal. This study proposes a simple method for the efficient and reproducible fabrication of GbLM patterns. A flexible strain sensor was obtained with high-aspect-ratio Galinstan (height/width > 5), linearity (R-square = 0.9975), stability (ΔR/R0 < 0.8 after 10 000 cycles), and low hysteresis. In addition, the application of the strain sensor in the flexible display and motion measurement of soft hand exoskeletons is demonstrated. The high-aspect-ratio liquid-metal patterns in this work have the potential to extend the application of the presented flexible electronics to the fields of wearable systems and rehabilitation devices. 相似文献