ORCID Profile
0000-0002-0155-6807
Current Organisation
UNSW Sydney
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Functional Materials | Materials Engineering | Metals and Alloy Materials
Expanding Knowledge in the Physical Sciences | Fabricated Metal Products not elsewhere classified |
Publisher: Wiley
Date: 07-11-2021
Abstract: Liquid–liquid interfaces of liquid alloys with electrolytic solutions present fertile platforms for realizing exciting interfacial phenomena that can be devised to process alloys and produce nanomaterials. Here, such an interface is established by immersing a gallium–bismuth binary liquid alloy into aqueous electrolytes. It is shown that the application of a negative voltage to this interface results in a rapid and complete liberation of bismuth nanostructures from liquid gallium. The set of conditions that govern the chemistry of the interface can be adjusted to control the oxidation state, morphology, and crystal structure of the expelled bismuth. By changing the conditions nanotubular, atomically thin plates, and sea‐urchin‐shaped bismuth oxide morphologies are obtained. The process can also control the crystal phase of bismuth oxide as monoclinic (α), tetragonal (β), or body‐centered cubic (γ). The addition of ascorbic acid to the electrolyte is observed to prevent the oxidation of the expelled entities, resulting in bismuth metal nanoparticles. Ab initio molecular dynamics and computational fluid dynamics simulations are performed to elucidate this rapid phase separation at the interface. This knowledge will potentially lead to new pathways for using alloys as reaction media to refine metals while simultaneously producing nanomaterials for various applications.
Publisher: Proceedings of the National Academy of Sciences
Date: 02-2022
Abstract: Streams of fluids, particulates, and other flowing media are difficult to control after they have left a nozzle. Here, we present the noncontact manipulation of a free-flowing stream of liquid metal. Such streams form by electrochemically lowering the interfacial tension. The electrochemical reactions make the streams into soft current–carrying conductors presenting minimal resistance to manipulation via the Lorentz force in the magnetic field. Meanwhile, the movement of the stream induces a secondary force arising from Lenz’s law that causes the manipulated streams to levitate in unique shapes. This work, which exploits these forces in a visually stunning manner, enables shaping of fluids in a noncontact manner.
Publisher: Wiley
Date: 04-07-2019
Publisher: Wiley
Date: 24-04-2017
Publisher: Wiley
Date: 29-11-2023
Abstract: Many different types of inorganic materials are processed into nano/microparticles for medical utilization. The impact of selected key characteristics of these particles, including size, shape, and surface chemistries, on biological systems, is frequently studied in clinical contexts. However, one of the most important basic characteristics of these particles, their density, is yet to be investigated. When the particles are designed for drug delivery, highly mobile macrophages are the major participants in cellular levels that process them in vivo. As such, it is essential to understand the impact of particles’ densities on the mobility of macrophages. Here, inorganic particles with different densities are applied, and their interactions with macrophages studied. A set of these particles are incubated with the macrophages and the outcomes are explored by optical microscopy. This microscopic view provides the understanding of the mechanistic interactions between particles of different densities and macrophages to conclude that the particles’ density can affect the migratory behaviors of macrophages: the higher the density of particles engulfed inside the macrophages, the less mobile the macrophages become. This work is a strong reminder that the density of particles cannot be neglected when they are designed to be utilized in biological applications.
Publisher: Springer Science and Business Media LLC
Date: 06-06-2022
DOI: 10.1038/S41557-022-00965-6
Abstract: Insights into metal-matrix interactions in atomically dispersed catalytic systems are necessary to exploit the true catalytic activity of isolated metal atoms. Distinct from catalytic atoms spatially separated but immobile in a solid matrix, here we demonstrate that a trace amount of platinum naturally dissolved in liquid gallium can drive a range of catalytic reactions with enhanced kinetics at low temperature (318 to 343 K). Molecular simulations provide evidence that the platinum atoms remain in a liquid state in the gallium matrix without atomic segregation and activate the surrounding gallium atoms for catalysis. When used for electrochemical methanol oxidation, the surface platinum atoms in the gallium-platinum system exhibit an activity of [Formula: see text] three orders of magnitude higher than existing solid platinum catalysts. Such a liquid catalyst system, with a dynamic interface, sets a foundation for future exploration of high-throughput catalysis.
Publisher: Wiley
Date: 03-2022
Abstract: Liquid metal droplets of gallium (Ga) and Ga‐based alloys are traditionally incorporated as deformable additives into soft elastomers to make them conductive. However, such a strategy has not been implemented to develop conductive sponges with real sponge‐like characteristics. Herein, polyurethane‐based sponges with Ga microdroplets embedded inside the polyurethane walls are developed. The liquid phase (at 45 °C) and solid phase (at room temperature) transition of the Ga fillers shows the temperature‐dependent functional variations in the mechanical, thermal, and electrical properties on the prepared composite sponges, which are investigated in detail. Unlike elastomers, the sponge possesses excellent elastic recovery, at ≈90%, and conductivity durability without sacrificing structural integrity. The reversible change of resistivity range is remarkable. When the Ga fillers account for 18% of the total sponge volume, the electrical resistivity varies from infinite values (insulator) under no applied pressure to 39.0 Ω m for the solid phase and 3.8 Ω m for the liquid phase under 386.8 kPa. New opportunities in developing flexible electrically conductive composite sponges with tunable mechanical and electrical properties that can be implemented for a variety of future applications are proposed.
Publisher: American Chemical Society (ACS)
Date: 11-09-2020
Publisher: AIP Publishing
Date: 04-09-2017
DOI: 10.1063/1.4994298
Abstract: We report a phenomenon that when exerting an electric field gradient across a liquid metal/electrolyte interface, a droplet of the same liquid metal can persistently surf on the interface without coalescence. A thin layer of the intermediate solution, which separates the droplet from direct metallic contacting and provides levitating force, is responsible for such surfing effect. The electric resistance of this solution film is measured, and the film thickness is further theoretically calculated. The fact that the levitating state can be switched on and off via a controlled manner paves the way for reliably manipulating liquid metal droplets or devices.
Publisher: Wiley
Date: 16-03-2023
Abstract: Liquid metals provide new dimensions for controlling and governing of reactions. The concept of freely moving metal solutes in liquid metals can be potentially used for enhancing and tuning interfacial reactions. In this work, zinc (Zn), as the solute metal is shown that, can move to the interface, enriching the interfacial area for the efficient synthesis of highly crystalline and porous zeolitic imidazolate framework‐8 (ZIF‐8). The highest rate of reaction is illustrated, and the best quality ZIF‐8, are obtained when a eutectic liquid metal system of Zn with gallium (Ga), containing 3.6 wt.% of Zn, is implemented. It is computationally shown that a combination of Ga activation and freely moving Zn leads to the highest reaction rate and better coordination with organic linkers. The comparisons with solid s les and non‐eutectic systems of Ga liquid demonstrate the advantages of eutectic mix. The work can be expanded to a variety of future interfacial reactions of zeolite imidazole frameworks for commercial scale up.
Publisher: Wiley
Date: 08-06-2020
Publisher: American Chemical Society (ACS)
Date: 16-11-2021
Abstract: Liquid metals (LMs) are electronic liquid with enigmatic interfacial chemistry and physics. These features make them promising materials for driving chemical reactions on their surfaces for designing nanoarchitectonic systems. Herein, we showed the interfacial interaction between eutectic gallium-indium (EGaIn) liquid metal and graphene oxide (GO) for the reduction of both substrate-based and free-standing GO. NanoIR surface mapping indicated the successful removal of carbonyl groups. Based on the gained knowledge, a composite consisting of assembled reduced GO sheets on LM microdroplets (LM-rGO) was developed. The LM enforced Ga
Publisher: American Chemical Society (ACS)
Date: 27-06-2019
Abstract: Bulk liquid metals have prospective applications as soft and fluid electrical and thermal conductors in electronic and optical devices, composites, microfluidics, robotics, and metallurgy with unique opportunities for processing, chemistry, and function. Yet liquid metals' great potential in nanotechnology remains in its infancy. Although work to date focuses primarily on Ga, Hg, and their alloys, to expand the field, we define "liquid metals" as metals and alloys with melting points (mp) up to 330 °C, readily accessible and processable even using household kitchen appliances. Such a definition encompasses a family of metals-including the majority of post-transition metals and Zn group elements (excluding Zn itself)-with remarkable versatility in chemistry, physics, and engineering. These liquid alloys can create metallic compounds of different morphologies, compositions, and properties, thereby enabling control over nanoscale phenomena. In addition, the presence of electronic and ionic "pools" within the bulk of liquid metals, as well as deviation from classical metallurgy on the surfaces of liquid metals, provides opportunities for gaining new capabilities in nanotechnology. For ex le, the bulk and surfaces of liquid metals can be used as reaction media for creating and manipulating nanomaterials, promoting reactions, or controlling crystallization of dissolved species. Interestingly, liquid metals have enormous surface tensions, yet the tension can be tuned electrically over a wide range or modified
Publisher: Elsevier BV
Date: 03-2023
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D2TB02079C
Abstract: A liquid gallium–polydopamine composite was synthesised and utilised as a soft biocompatible electrode for cell culture by electro-stimulation increasing the proliferation rate of model animal fibroblasts.
Publisher: Wiley
Date: 02-05-2018
Abstract: As a class of emerging multifunctional soft materials, gallium-based liquid metal (LM) amalgams, metal/nonmetal particles dispersed in an LM environment, suggest a combination of intriguing properties. In this article, Mg particles in gallium-indium alloy for making new conceptual biomedical materials, which can adapt to any irregular skin surface, are introduced, and superior photothermal effect with a 61.5% photothermal conversion (PTC) increase with respect to that of the LM is realized. The formation of a new intermetallic phase Mg
Publisher: American Chemical Society (ACS)
Date: 30-08-2021
Publisher: Springer Science and Business Media LLC
Date: 03-02-2022
Publisher: Elsevier BV
Date: 2021
Publisher: Wiley
Date: 11-12-2021
Publisher: Wiley
Date: 25-11-2020
Publisher: American Chemical Society (ACS)
Date: 27-09-2023
Publisher: American Chemical Society (ACS)
Date: 06-10-2021
Publisher: American Chemical Society (ACS)
Date: 17-08-2023
Publisher: Wiley
Date: 29-09-2020
Abstract: Colloidal liquid metal alloys of gallium, with melting points below room temperature, are potential candidates for creating electrically conductive and flexible composites. However, inclusion of liquid metal micro- and nanodroplets into soft polymeric matrices requires a harsh auxiliary mechanical pressing to rupture the droplets to establish continuous pathways for high electrical conductivity. However, such a destructive strategy reduces the integrity of the composites. Here, this problem is solved by incorporating small loading of nonfunctionalized graphene flakes into the composites. The flakes introduce cavities that are filled with liquid metal after only relatively mild press-rolling ( 30 kPa. The composites are used for forming flexible electrically-conductive tracks in electronic circuits with a self-healing property. The demonstrated application of co-fillers, together with liquid metal droplets, can be used for establishing electrically-conductive printable-composite tracks for future large-area flexible electronics.
Publisher: American Chemical Society (ACS)
Date: 16-02-2019
Publisher: Elsevier BV
Date: 2023
Publisher: Elsevier BV
Date: 08-2021
Publisher: American Association for the Advancement of Science (AAAS)
Date: 09-12-2022
Abstract: In nature, snowflake ice crystals arrange themselves into erse symmetrical six-sided structures. We show an analogy of this when zinc (Zn) dissolves and crystallizes in liquid gallium (Ga). The low-melting-temperature Ga is used as a “metallic solvent” to synthesize a range of flake-like Zn crystals. We extract these metallic crystals from the liquid metal solvent by reducing its surface tension using a combination of electrocapillary modulation and vacuum filtration. The liquid metal–grown crystals feature high morphological ersity and persistent symmetry. The concept is expanded to other single and binary metal solutes and Ga-based solvents, with the growth mechanisms elucidated through ab initio simulation of interfacial stability. This strategy offers general routes for creating highly crystalline, shape-controlled metallic or multimetallic fine structures from liquid metal solvents.
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9TC01544B
Abstract: Liquid metals can offer extraordinary properties for application in the field of sensors, yet their potential has not been fully realised.
Publisher: American Chemical Society (ACS)
Date: 30-03-2020
Publisher: Wiley
Date: 17-09-2022
Abstract: Heavy metal ions contamination is an ever‐growing threat to human health and ecosystems. Analytic sensing of heavy metal ions is a prerequisite step toward addressing this challenge. Electroanalytical technique is an effective and convenient way to detect heavy metal ions. Especially, stripping voltammetry techniques have been utilized for sensing metal ions at trace levels in different s le matrices. The choice of the working electrode materials plays a decisive role in the precision and sensitivity of stripping voltammetry. Post‐transition metals (including elements in group 12) are elements with low melting points, demonstrating unique properties including amalgamation with heavy metal ions that enhance the performance of stripping voltammetry during the pre‐concentration step, which make them particularly suitable for heavy metal ion sensing. Here, for better understanding the features and advantages of post‐transition metals in stripping voltammetry, eight classes of working electrodes based on zinc (Zn), mercury (Hg), gallium (Ga), indium (In), tin (Sn), lead (Pb), antimony (Sb), and bismuth (Bi), are reviewed, with their efficiency and effectiveness compared and recent progresses discussed. Additionally, liquid metal electrodes based on post‐transition metals and alloys are also presented. This review provides viable directions for future development of heavy metal ion sensors based on post‐transition metals.
Publisher: American Chemical Society (ACS)
Date: 19-12-2020
Abstract: Phonon-polaritons (PhPs) in layered crystals, including hexagonal boron nitride (hBN), have been investigated by combined scattering-type scanning near-field optical microscopy (s-SNOM) and Fourier transform infrared (FTIR) spectroscopy. Nevertheless, many of such s-SNOM-based FTIR spectra features remain unexplored, especially those originated from the impact of boundaries. Here we observe real-space PhP propagations in thin-layer hBN sheets either supported or suspended by s-SNOM imaging. Then with a high-power broadband IR laser source, we identify two major peaks and multiple auxiliary peaks in the near-field litude spectra, obtained using scattering-type near-field FTIR spectroscopy, from both supported and suspended hBN. The major PhP propagation interference peak moves toward the major in-plane phonon peak when the IR illumination moves away from the hBN edge. Specific differences between the auxiliary peaks in the near-field litude spectra from supported and suspended hBN sheets are investigated regarding different boundary conditions, associated with edges and substrate interfaces. The outcomes may be explored in heterostructures for advanced nanophotonic applications.
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0TA06379G
Abstract: Mitigation of the health hazards caused by Pb is necessary. A liquid metal-based synthesis method delivers unit-cell-thick layers of PbO with comparable piezoelectric response and band gap to PZT thick films while posing reduced toxicity.
Publisher: Wiley
Date: 12-09-2021
Abstract: The introduction of trace impurities within the doping processes of semiconductors is still a technological challenge for the electronics industries. By taking advantage of the selective enrichment of liquid metal interfaces, and harvesting the doped metal oxide semiconductor layers, the complexity of the process can be mitigated and a high degree of control over the outcomes can be achieved. Here, a mechanism of natural filtering for the preparation of doped 2D semiconducting sheets based on the different migration tendencies of metallic elements in the bulk competing for enriching the interfaces is proposed. As a model, liquid metal alloys with different weight ratios of Sn and Bi in the bulk are employed for harvesting Bi 2 O 3 ‐doped SnO nanosheets. In this model, Sn shows a much stronger tendency than Bi to occupy surface sites of the Bi–Sn alloys, even at the very high concentrations of Bi in the bulk. This provides the opportunity for creating SnO 2D sheets with tightly controlled Bi 2 O 3 dopants. By way of ex le, it is demonstrated how such nanosheets could be made selective to both reducing and oxidizing environmental gases. The process demonstrated here offers significant opportunities for future synthesis and fabrication processes in the electronics industries.
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3TC01922E
Abstract: A novel liquid metal-based micro structuring tuning process for improving the thermoelectric properties of metal alloys.
Publisher: American Chemical Society (ACS)
Date: 30-04-2021
Publisher: Elsevier BV
Date: 10-2016
Publisher: Wiley
Date: 21-05-2018
Publisher: Elsevier BV
Date: 03-2021
Publisher: American Chemical Society (ACS)
Date: 08-04-2020
Publisher: American Chemical Society (ACS)
Date: 04-10-2017
Abstract: Metals are excellent choices for electrical- and thermal-current conducting. However, either the stiffness of solid metals or the fluidity of liquid metals could be troublesome when flexibility and formability are both desired. To address this problem, a reliable two-stage route to improve the functionalities of gallium-based liquid metals is proposed. A series of stable semiliquid/semisolid gallium-based liquid metal amalgams with well-controlled particle packing ratios, which we call TransM
Publisher: American Physical Society (APS)
Date: 17-08-2021
Publisher: American Chemical Society (ACS)
Date: 22-02-2021
Publisher: American Physical Society (APS)
Date: 05-08-2021
Publisher: Wiley
Date: 10-06-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0TC01466D
Abstract: Direct patterning of liquid metals via photolithography.
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0TC04302H
Abstract: This work presents the room temperature nitridation of gallium-based liquid metal alloy particles during sonication.
Publisher: American Chemical Society (ACS)
Date: 23-07-2021
Publisher: American Chemical Society (ACS)
Date: 11-2021
Publisher: Springer Science and Business Media LLC
Date: 09-09-2013
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D2NR06384K
Abstract: Liquid gallium particles and manganese oxide inorganic composites were synthesised with the spontaneous formation of manganese oxide networks on the liquid surface of gallium. The composites exhibited tunable optical and photoelectric properties.
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1TA02664J
Abstract: Post-transition metal composites were fabricated and used for the sensing of alkali metal ions towards the recovery of Li + from mixed salt aqueous solutions.
Publisher: Wiley
Date: 04-09-2018
Publisher: AIP Publishing
Date: 19-01-2015
DOI: 10.1063/1.4906098
Abstract: An ejector vacuum system using nontoxic room-temperature liquid metal as actuating fluid was fabricated and experimentally demonstrated. With physical merits of high density, fluidity, and ultralow vapor pressure, the liquid metal could serve as a high momentum density carrier fluid. The main performance parameters of the liquid metal actuated ejector were thus found to be significantly improved by orders superior as compared with that of water actuating system. Under oxidation protection, an ultimate vacuum pressure of 170 Pa was achieved and capacity of evacuating a 500 ml nitrogen reservoir from atmospheric pressure to 480 Pa within 96 s was obtained.
Publisher: Springer Science and Business Media LLC
Date: 18-01-2021
DOI: 10.1038/S41565-020-00835-7
Abstract: It is well-understood that during the liquid-to-solid phase transition of alloys, elements segregate in the bulk phase with the formation of microstructures. In contrast, we show here that in a Bi-Ga alloy system, highly ordered nanopatterns emerge preferentially at the alloy surfaces during solidification. We observed a variety of transition, hybrid and crystal-defect-like patterns, in addition to lamellar and rod-like structures. Combining experiments and molecular dynamics simulations, we investigated the influence of the superficial Bi and Ga
Publisher: Wiley
Date: 04-10-2017
Publisher: Springer Science and Business Media LLC
Date: 11-10-2019
DOI: 10.1038/S41467-019-12615-6
Abstract: The nascent field of nanotechnology-enabled metallurgy has great potential. However, the role of eutectic alloys and the nature of alloy solidification in this field are still largely unknown. To demonstrate one of the promises of liquid metals in the field, we explore a model system of catalytically active Bi-Sn nano-alloys produced using a liquid-phase ultrasonication technique and investigate their phase separation, surface oxidation, and nucleation. The Bi-Sn ratio determines the grain boundary properties and the emergence of dislocations within the nano-alloys. The eutectic system gives rise to the smallest grain dimensions among all Bi-Sn ratios along with more pronounced dislocation formation within the nano-alloys. Using electrochemical CO 2 reduction and photocatalysis, we demonstrate that the structural peculiarity of the eutectic nano-alloys offers the highest catalytic activity in comparison with their non-eutectic counterparts. The fundamentals of nano-alloy formation revealed here may establish the groundwork for creating bimetallic and multimetallic nano-alloys.
Publisher: No publisher found
Date: 2015
Publisher: American Chemical Society (ACS)
Date: 26-04-2022
Abstract: Transforming natural resources to energy sources, such as converting CH
Publisher: AIP Publishing
Date: 11-12-2017
DOI: 10.1063/1.5017949
Abstract: We report a gas eruption phenomenon caused by electrolysis of a liquid Ga-In alloy in an electrolyte, especially NaOH solution. A volcanic eruption-like blowout of gas occurred from the orifice on the alloy surface. In addition to the gas plume, large gas bubbles were also generated and the total gas yield increased as the In ratio was increased. It is found that the destructiveness of the passivation layer on the Ga-In alloy is critical to gas generation. The mechanism of gas eruption can be ascribed to a galvanic interaction between the passivation film and the connected alloy, because of their different electrochemical activity in the electrolyte. Further investigation demonstrated that the lattice of the film expands because of the incorporation of indium, which brings about the decrease in the bandgap and finally enhances more gas generation. These findings regain the basic understanding of a room temperature liquid metal inside an electrolyte.
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1TC04877E
Abstract: The intermetallic wetting between metallic liquids and solid surfaces enables a high-resolution liquid metal patterning strategy which is widely applicable for fabricating functional patterns on versatile substrates and planar/3D geometries.
Publisher: American Chemical Society (ACS)
Date: 17-06-2020
Publisher: Elsevier BV
Date: 05-2017
Publisher: Elsevier BV
Date: 12-2021
Publisher: American Chemical Society (ACS)
Date: 18-09-2020
Publisher: Wiley
Date: 02-10-2021
Publisher: American Chemical Society (ACS)
Date: 05-05-2020
Publisher: AIP Publishing
Date: 30-05-2016
DOI: 10.1063/1.4953157
Abstract: We report the electron discharge effect due to point contact between liquid metal and solid metal particles in electrolyte. Adding nickel particles induces drastic hydrogen generating and intermittent jumping of a sub-millimeter EGaIn droplet in NaOH solution. Observations from different orientations disclose that such jumping behavior is triggered by pressurized bubbles under the assistance of interfacial interactions. Hydrogen evolution around particles provides clear evidence that such electric instability originates from the varied electric potential and morphology between the two metallic materials. The point-contact-induced charge concentration significantly enhances the near-surface electric field intensity at the particle tips and thus causes electric breakdown of the electrolyte.
Publisher: American Chemical Society (ACS)
Date: 25-05-2022
Abstract: Gallium (Ga) compounds, as the source of Ga ions (Ga
Publisher: Elsevier BV
Date: 06-2022
Publisher: American Chemical Society (ACS)
Date: 19-05-2020
Publisher: AIP Publishing
Date: 11-01-2016
DOI: 10.1063/1.4939829
Abstract: A close-cycle self-driving thermal energy harvester using liquid metal as energy carrier fluid has been proposed. The driving force that pushes the liquid metal against flow resistance and gravity is provided by a resistively heated volatile fluid based on thermo-pneumatic principle. The tested harvester prototype demonstrated its capability to extract thermal energy between small temperature gradient, at a scale of 10 °C. During a 5-h operation, it further demonstrated robust liquid metal recirculating performance at a time-average volume flow rate of 14 ml/min with a 12.25 W heating load. The prototype also managed to self-adjust to variable working conditions which indicated the reliability of this method. Advantages of this method include simple-structural design, rigid-motion free operation, and low-temperature actuation. These advantages make it uniquely suited for solar energy and low-grade heat harvesting, high heat flux electronics cooling, as well as autonomous machines actuating.
Publisher: Springer Science and Business Media LLC
Date: 16-05-2018
Publisher: American Physical Society (APS)
Date: 27-05-2020
Publisher: Elsevier BV
Date: 11-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2NR02559K
Abstract: A versatile strategy to fabricate surface-independent nanocoatings with entrapped liquid metal nanoparticles has been demonstrated, leveraging from the self-assembly and chelation ability of natural polyphenols.
Publisher: Wiley
Date: 21-10-2022
Abstract: A green carbon capture and conversion technology offering scalability and economic viability for mitigating CO 2 emissions is reported. The technology uses suspensions of gallium liquid metal to reduce CO 2 into carbonaceous solid products and O 2 at near room temperature. The nonpolar nature of the liquid gallium interface allows the solid products to instantaneously exfoliate, hence keeping active sites accessible. The solid co‐contributor of silver–gallium rods ensures a cyclic sustainable process. The overall process relies on mechanical energy as the input, which drives nano‐dimensional triboelectrochemical reactions. When a gallium/silver fluoride mix at 7:1 mass ratio is employed to create the reaction material, 92% efficiency is obtained at a remarkably low input energy of 230 kWh (excluding the energy used for dissolving CO 2 ) for the capture and conversion of a tonne of CO 2 . This green technology presents an economical solution for CO 2 emissions.
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/C9TC06883J
Abstract: Facile synthesis of a copper oxide–liquid metal composite.
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9TA05200C
Abstract: Field's metal particles synthesised by mechanical agitation exhibit peculiar core–shell structure and functionality.
Publisher: American Chemical Society (ACS)
Date: 23-06-0200
Abstract: Understanding the interfacial contacts between liquid metals and substrate materials is becoming increasingly important for the fast-rising liquid metal-enabled technologies. However, for such technologies, probing the contact behavior and interfacial charge transport has remained challenging due to the deformable nature of liquid metals and the presence of the surface oxide layer. Here, we encapsulate eutectic gallium indium (EGaIn) micro-/nanodroplets with tungsten trioxide (WO
Publisher: American Chemical Society (ACS)
Date: 02-11-2022
Abstract: Liquid metals can be surface activated to generate a controlled galvanic potential by immersing them in aqueous solutions. This creates energized liquid-liquid interfaces that can promote interfacial chemical reactions. Here we utilize this interfacial phenomenon of liquid metals to deposit thin films of tin-doped tellurium onto rigid and flexible substrates. This is accomplished by exposing liquid metals to a precursor solution of Sn
Publisher: American Physical Society (APS)
Date: 27-12-2018
Publisher: Wiley
Date: 19-05-2023
Abstract: Exploring and controlling surface tension‐driven phenomena in liquid metals may lead to unprecedented possibilities for next‐generation microfluidics, electronics, catalysis, and materials synthesis. In pursuit of these goals, the impact of minor constituents within liquid alloys is largely overlooked. Herein, it is showed that the presence of a fraction of solute metals such as tin, bismuth, and zinc in liquid gallium can significantly influence their electrocapillarity and electrochemistry. The instability‐driven fractal formation of liquid alloy droplets is investigated with different solutes and reveals the formation of distinctive non‐branched droplets, unstable fractals, and stable fractal modes under controlled voltage and alkaline solution conditions. In their in idually unique fractal morphology diagrams, different liquid alloys demonstrate significantly shifted voltage thresholds in transition between the three fractal modes, depending on the choice of the solute metal. Surface tension measurements, cycle voltammetry and surface compositional characterizations provide strong evidence that the minor alloy components drastically alter the surface tension, surface electrochemical oxidation, and oxide dissolution processes that govern the droplet deformation and instability dynamics. The findings that minor components are able to regulate liquid alloys’ surface tensions, surface element distributions and electrochemical activities offer great promises for harnessing the tunability and functionality of liquid metals.
Start Date: 2022
End Date: 12-2024
Amount: $430,000.00
Funder: Australian Research Council
View Funded Activity