Fluorescent Liquid Metal As a Transformable Biomimetic Chameleon

Liang, Shuting; Rao, Wei; Song, Kai; Liu, Jing

doi:10.1021/acsami.7b17233

Cited by 61 publications

(66 citation statements)

References 50 publications

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“…1 E), which indicating a reduction of Au ions and presence of Au NPs. This phenomenon was benefited from the interfacial galvanic replacement reaction contributed by Ga and Au ions [ [45] , [46] , [47] ]. SEM images ( Fig.…”

Section: Resultsmentioning

confidence: 99%

Galvanic replacement reaction for in situ fabrication of litchi-shaped heterogeneous liquid metal-Au nano-composite for radio-photothermal cancer therapy

Guo

Wang

et al. 2021

Bioactive Materials

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With tremendous research advances in biomedical application, liquid metals (LM) also offer fantastic chemistry for synthesis of novel nano-composites. Herein, as a pioneering trial, litchi-shaped heterogeneous eutectic gallium indium-Au nanoparticles (EGaIn-Au NPs), served as effective radiosensitizer and photothermal agent for radio-photothermal cancer therapy, have been successfully prepared using in situ interfacial galvanic replacement reaction. The enhanced photothermal conversion efficiency and boosted radio-sensitization effect could be achieved with the reduction of Au nanodots onto the eutectic gallium indium (EGaIn) NPs surface. Most importantly, the growth of tumor could be effectively inhibited under the combined radio-photothermal therapy mediated by EGaIn-Au NPs. Inspired by this approach, in situ interfacial galvanic replacement reaction may open a novel strategy to fabricate LM-based nano-composite with advanced multi-functionalities.

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Section: Resultsmentioning

confidence: 99%

Galvanic replacement reaction for in situ fabrication of litchi-shaped heterogeneous liquid metal-Au nano-composite for radio-photothermal cancer therapy

Guo

Wang

et al. 2021

Bioactive Materials

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“…[59] And Shuting Liang et al demonstrated a liquid metal marble splitting and merging among different colors. [60] Therefore, the MCLMMs to work in a much more complex air-liquid environment and possess more functions can be still studied in future research.…”

Section: Discussionmentioning

confidence: 99%

Magnetically Controllable Liquid Metal Marbles

Chen

Xiong

Song

et al. 2019

Adv Materials Inter

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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.

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“…Figure 9A demonstrated the colored marble by using the viscous adhesion of the oxide film to adhere to the phosphor, which revealed that there is nothing adhesion between the liquid metal core (without oxidized part) and the phosphor. [130,131] By respectively coated PTFE and graphene powder on the surface to obtain an anti-oxidation film, the mechanical and conductive properties of RTLMs were reinforced in Figure 9B. [124,129] WO 3 powders adhered to the liquid metal marbles by oxidized wetting are other typical mobile marbles driven by ultraviolet light.…”

Section: Preparation Strategies Between Non-metallic Particles and Rtlmsmentioning

confidence: 99%

Interfacial Engineering of Room Temperature Liquid Metals

Liu

Cui

et al. 2021

Adv Materials Inter

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and formed spontaneously and instantaneously upon exposure to atmospheric oxygen. [1-3] The thin film or "protective skin" covering the surface of RTLMs, generally dominated the physical properties and applications of the materials. This thin film is composed of a majority fraction of gallium oxides with a much smaller amount of indium and tin oxides. [4] When immersed in acidic or alkaline electrolytes, the oxidic films of RTLMs will be dissolved. [5-8] Due to the disorder of internal structure, the surface of the spherical liquid metal droplet is smooth and removable under the function of surface tension. [9,10] According to the size and structure of the solid substrate, the contact areas between the liquid metal and the solid substrate shows various wetting phenomena and corresponding application scenarios. [11-14] Surface chemical composition plays the primary role in dominating various phenomena and practical applications of RTLMs, which possessed the technologically important and scientifically interesting parameter. Gallium-based liquid metal is similar in structure to conventional solid metal, except for some covalent bonds inside, and the physicochemical properties have the commonality of both metallic solid and fluid properties. [15] The composition of gallium-based alloys can be assumed as made up of several atomic groups, within which the permutation of the solid remains, the binding energy between the liquid atoms remains strong, but the binding force between the groups was broken. The interface refers to the contact area between the different phases, which is the transition layer from one phase to another. The binding force of electrons that are relatively far away from the inner core is related to their energy, causing the interface behavior between different phases to be incompletely consistent. The surface is a type of interface, which specifically refers to the gas phase substance in interfacial behavior. In the processes of thermodynamics, [16,17] surface absorption, [18,19] controllable wetting, [6,13,20] material catalysis, [21,22] redox, and other physical and chemical reactions, [23,24] RTLMs inevitably contact with other substances with different phase states. Even the pure liquid metal would contact with oxygen in the air to yield a thin protective film. [17,25,26] Therefore, the investigation of interfacial behaviors between RTLMs and different surrounding mediums is helpful to renovate and broaden the understanding and applications of liquid metal. So far, there gradually appeared literature on phenomena and mechanism of the interfacial effect of RTLMs, such as synthesis of low-dimensional materials in the gas atmosphere, [27,28] Room temperature liquid metals (RTLMs), especially those made of galliumbased alloys belong to an emerging versatile material with fascinating characteristics derived from its simultaneous metallic and inherent fluidic natures. The interfacial effects of liquid metal involved in diverse surfaces thus play critical roles in explaining many fundamental phenomena....

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Fluorescent Liquid Metal As a Transformable Biomimetic Chameleon

Cited by 61 publications

References 50 publications

Galvanic replacement reaction for in situ fabrication of litchi-shaped heterogeneous liquid metal-Au nano-composite for radio-photothermal cancer therapy

Galvanic replacement reaction for in situ fabrication of litchi-shaped heterogeneous liquid metal-Au nano-composite for radio-photothermal cancer therapy

Magnetically Controllable Liquid Metal Marbles

Interfacial Engineering of Room Temperature Liquid Metals

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