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Articles 421 - 450 of 1524
Full-Text Articles in Physical Sciences and Mathematics
Review Of Electrolytes In Nonaqueous Lithium-Oxygen Batteries, Haipeng Guo, Wenbin Luo, Jun Chen, Shulei Chou, Hua-Kun Liu, Jiazhao Wang
Review Of Electrolytes In Nonaqueous Lithium-Oxygen Batteries, Haipeng Guo, Wenbin Luo, Jun Chen, Shulei Chou, Hua-Kun Liu, Jiazhao Wang
Australian Institute for Innovative Materials - Papers
Based on an inexhaustible and ubiquitous source of oxygen, the lithium-oxygen batteries are currently the subject of much scientific investigation because of their potential for extremely high energy density. The electrocatalytic materials for them have been extensively researched during the past decade. Even though they are a key component in the lithium-oxygen batteries, however, the study of electrolytes is still in its primary stage. Electrolytes have an important influence on the electrochemical performance of lithium-oxygen batteries, especially on their cycling stability and rate capacity. Therefore, it is important to select an ideal electrolyte with excellent stability against attack by reaction …
Energy Of Dendritic Avalanches In Thin-Film Superconductors, T Qureishy, J I. Vestgarden, A J. Qviller, A S. Fjellvag, J M. Meckbach, A Torgovkin, Tom H. Johansen, K Ilin, M Siegel, I J. Maasilta, Pavlo Mikheenko
Energy Of Dendritic Avalanches In Thin-Film Superconductors, T Qureishy, J I. Vestgarden, A J. Qviller, A S. Fjellvag, J M. Meckbach, A Torgovkin, Tom H. Johansen, K Ilin, M Siegel, I J. Maasilta, Pavlo Mikheenko
Australian Institute for Innovative Materials - Papers
A method for calculating stored magnetic energy in a thin superconducting film based on quantitative magneto-optical imaging is developed. Energy and magnetic moment are determined with these calculations for full hysteresis loops in a thin film of the superconductor NbN. Huge losses in energy are observed when dendritic avalanches occur. Magnetic energy, magnetic moment, sheet current and magnetic flux distributions, all extracted from the same calibrated magneto-optical images, are analyzed and discussed. Dissipated energy and the loss in moment when dendritic avalanches occur are related to each other. Calculating these losses for specific spatially-resolved flux avalanches is a great advantage, …
Advances In Polar Materials For Lithium-Sulfur Batteries, Hongqiang Wang, Wenchao Zhang, Jianzhong Xu, Zaiping Guo
Advances In Polar Materials For Lithium-Sulfur Batteries, Hongqiang Wang, Wenchao Zhang, Jianzhong Xu, Zaiping Guo
Australian Institute for Innovative Materials - Papers
Lithium-sulfur batteries are regarded as promising candidates for energy storage devices due to their high theoretical energy density. Various approaches are proposed to break through the obstacles that are preventing Li-S batteries from realizing practical application. Recently, the importance of the strong chemical interaction between polar materials and polysulfides is recognized by researchers to improve the performance of Li-S batteries, especially with respect to the shuttle effect. Polar materials, unlike nonpolar materials, exhibit strong interactions with polysulfides without any modification or doping because of their intrinsic polarity, absorbing the polar polysulfides and thus suppressing the notorious shuttle effect. The recent …
Engineering Surface Amine Modifiers Of Ultrasmall Gold Nanoparticles Supported On Reduced Graphene Oxide For Improved Electrochemical Co2 Reduction, Yong Zhao, Caiyun Wang, Yuqing Liu, Douglas R. Macfarlane, Gordon G. Wallace
Engineering Surface Amine Modifiers Of Ultrasmall Gold Nanoparticles Supported On Reduced Graphene Oxide For Improved Electrochemical Co2 Reduction, Yong Zhao, Caiyun Wang, Yuqing Liu, Douglas R. Macfarlane, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Ultrasmall gold (Au) nanoparticles with high mass activity have great potential for practical applications in CO2electroreduction. However, these nanoparticles often suffer from poor product selectivity since their abundant low-coordinated sites are favorable for H2evolution. In this work, a catalyst, reduced graphene oxide supported ultrasmall Au nanoparticles (≈2.4 nm) is developed which delivers high Au-specific mass activities (>100 A g-1) and good Faradaic efficiencies (32-60%) for the CO2-to-CO conversion at moderate overpotentials (450-600 mV). The efficiencies can be improved to 59-75% while retaining the ultrahigh mass activities via a simple amine-modification strategy. In addition, an amine-structure-dependent effect is revealed: linear …
Synthesis And Characterization Of Dendritic Pt Nanoparticles By Using Cationic Surfactant, Kenya Kani, Mohamed B. Zakaria, Jianjian Lin, Abdulmohsen Alshehri, Jeonghun Kim, Yoshio Bando, Jungmok You, Md. Shahriar Al Hossain, Jiang Bo, Yusuke Yamauchi
Synthesis And Characterization Of Dendritic Pt Nanoparticles By Using Cationic Surfactant, Kenya Kani, Mohamed B. Zakaria, Jianjian Lin, Abdulmohsen Alshehri, Jeonghun Kim, Yoshio Bando, Jungmok You, Md. Shahriar Al Hossain, Jiang Bo, Yusuke Yamauchi
Australian Institute for Innovative Materials - Papers
Platinum (Pt) is known as one of the most promising electrocatalysts, and nanostructured Pt materials have enhanced its activity due to their abundant catalytically active sites derived from their high surface area. Herein, we synthesize fascinating dendritic Pt nanoparticles (DPNs) by a softtemplating method using hexadecyltrimethylammonium chloride (CTAC) as a pore-forming agent. The dissolved negatively charged Pt precursor (PtCl4 2¹) effectively interact with the surfactant. The particle size of the obtained DPNs is around 20 nm, and the pore walls are composed of Pt nanocrystals. The obtained DPNs show good electrocatalytic activity towards methanol oxidation reaction (MOR) compared to commercial …
Magnetoelectric Coupling In Nanoscale 0-1 Connectivity, Yan Zong, Zhilian Yue, Pedro M. Martins, Jincheng Zhuang, Yi Du, Senentxu Lanceros-Mendez, Michael J. Higgins
Magnetoelectric Coupling In Nanoscale 0-1 Connectivity, Yan Zong, Zhilian Yue, Pedro M. Martins, Jincheng Zhuang, Yi Du, Senentxu Lanceros-Mendez, Michael J. Higgins
Australian Institute for Innovative Materials - Papers
The strain-mediated magnetoelectric (ME) coupling between piezoelectric (PE) and magnetostrictive (MS) components are established in various connectivities. Discovering new ME connectivity and elucidating the key factors governing the performance of ME composite are of critical importance to find advanced materials for modern electronics. Reported here is a novel ME coupling in 0-1 connectivity. The unique self-assembling ability of 1-dimension crystalline nanocellulose (CNC) nanowhiskers enables the establishment of ME coupling with 0-dimension cobalt ferrite (CFO) nanoparticles without the use of binder. The developed CFO/CNC 0-1 ME composites display a significant ME voltage coefficient (αME) as high as 0.135 mV cm−1 Oe−1. …
Investigation Of S-Shaped Current-Voltage Characteristics In High-Performance Solution-Processed Small Molecule Bulk Heterojunction Solar Cells, Ali Aghassi, Cormac Fay, Attila J. Mozer
Investigation Of S-Shaped Current-Voltage Characteristics In High-Performance Solution-Processed Small Molecule Bulk Heterojunction Solar Cells, Ali Aghassi, Cormac Fay, Attila J. Mozer
Australian Institute for Innovative Materials - Papers
The appearance of an S-shaped current-voltage curve and its impact on the performance of solution-processed small molecule p-DTS(FBTTh2)2:PC70BM bulk heterojunction solar cell devices were investigated. The power conversion efficiency of the devices showing S-curve characteristics was almost half of what was expected for this combination of materials, which was due to a low fill factor (FF) and 20% lower short circuit current density. A normal diode-like current-voltage curve was retrieved when the PCBM content of the active layer was increased, with power conversion efficiency reaching 6%. Analysis of the current-voltage characteristics of the S-curve solar cell devices showed that the …
Biocompatible Bi(Oh)3nanoparticles With Reduced Photocatalytic Activityas Possible Ultraviolet Filter In Sunscreens, Kathrin Bogusz, Dean Cardillo, Moeava Tehei, Tifenn Boutard, Philip J. Barker, Thierry Devers, Anatoly B. Rosenfeld, Shi Xue Dou, Hua-Kun Liu, Konstantin K. Konstantinov
Biocompatible Bi(Oh)3nanoparticles With Reduced Photocatalytic Activityas Possible Ultraviolet Filter In Sunscreens, Kathrin Bogusz, Dean Cardillo, Moeava Tehei, Tifenn Boutard, Philip J. Barker, Thierry Devers, Anatoly B. Rosenfeld, Shi Xue Dou, Hua-Kun Liu, Konstantin K. Konstantinov
Australian Institute for Innovative Materials - Papers
In this study we investigate readily synthesised Bi(OH)3nanoparticles as a novel, multifunctional ultraviolet filter for sunscreen. The absorbance of Bi(OH)3NPs in the ultraviolet region is comparable to that of both ZnO and TiO2NPs used in commercial sunscreens. In vitro photoprotection results show that the combination of TiO2/Bi(OH)3is more efficient than TiO2/ZnO over the whole UV range, with an increase in sun protection factor of 28%. The emulsions show rheological properties comparable to those of commercial sunscreens. The combination of TiO2/Bi(OH)3led to insignificant damage on pre-painted steel panels after exterior exposure for twelve weeks. We also demonstrate that the addition of …
A Contactless Approach For Monitoring The Mechanical Properties Of Swollen Hydrogels, Andres Ruland Palaia, Xifang Chen, Afsaneh Khansari, Cormac Fay, Sanjeev Gambhir, Zhilian Yue, Gordon G. Wallace
A Contactless Approach For Monitoring The Mechanical Properties Of Swollen Hydrogels, Andres Ruland Palaia, Xifang Chen, Afsaneh Khansari, Cormac Fay, Sanjeev Gambhir, Zhilian Yue, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Using a customized ultrasound setup we investigate the feasibility of using a contactless approach to study the bulk mechanical properties of swollen hydrogels. The study involved two different hydrogels, gelatin methacrylate (GelMa) and green algae extract methacrylate (GAEM), which were prepared to provide materials with varying modulus and different swelling properties. Two approaches have been developed. In the first case, ultrasound was compared to Young's modulus measured by indentation. It was found that can be linearly related to indentation modulus values only when the hydrogel swelling ratio is taken into account. In the second approach, an exponential dependency between swelled …
Unraveling The Effect Of Salt Chemistry On Long-Durability High-Phosphorus-Concentration Anode For Potassium Ion Batteries, Wenchao Zhang, Zhibin Wu, Jian Zhang, Guoping Liu, Nai-Hsuan Yang, Ru-Shi Liu, Wei Kong Pang, Wenwu Li, Zaiping Guo
Unraveling The Effect Of Salt Chemistry On Long-Durability High-Phosphorus-Concentration Anode For Potassium Ion Batteries, Wenchao Zhang, Zhibin Wu, Jian Zhang, Guoping Liu, Nai-Hsuan Yang, Ru-Shi Liu, Wei Kong Pang, Wenwu Li, Zaiping Guo
Australian Institute for Innovative Materials - Papers
Phosphorus-based anode materials are of considerable interest for grid-scale energy storage systems due to their high theoretical capacity. Nevertheless, the low electrical conductivity of P, large volume changes during cycling, and highly-reactive phosphide surface are hindering their potential applications. Herein, outstanding long-term cycling stability with high retained potassium storage capacity (213.7 mA h g−1over 2000 cycles) was achieved via the introduction of an alternative potassium bis(fluorosulfonyl)imide (KFSI) salt and by using a layered compound (GeP5) with a high phosphorus concentration as anode material. Fourier transform infrared spectroscopic mapping results suggest that KFSI salt helps to form an uniform solid electrolyte …
Graphitic Carbon Nanocage As A Stable And High Power Anode For Potassium-Ion Batteries, Bin Cao, Qing Zhang, Huan Liu, Bin Xu, Shilin Zhang, Tengfei Zhou, Jianfeng Mao, Wei Kong Pang, Zaiping Guo, Ang Li, Jisheng Zhou, Xiaohong Chen, Huaihe Song
Graphitic Carbon Nanocage As A Stable And High Power Anode For Potassium-Ion Batteries, Bin Cao, Qing Zhang, Huan Liu, Bin Xu, Shilin Zhang, Tengfei Zhou, Jianfeng Mao, Wei Kong Pang, Zaiping Guo, Ang Li, Jisheng Zhou, Xiaohong Chen, Huaihe Song
Australian Institute for Innovative Materials - Papers
As an emerging electrochemical energy storage device, potassium-ion batteries (PIBs) have drawn growing interest due to the resource-abundance and low cost of potassium. Graphite-based materials, as the most common anodes for commercial Li-ion batteries, have a very low capacity when used an anode for Na-ion batteries, but they show reasonable capacities as anodes for PIBs. The practical application of graphitic materials in PIBs suffers from poor cyclability, however, due to the large interlayer expansion/shrinkage caused by the intercalation/deintercalation of potassium ions. Here, a highly graphitic carbon nanocage (CNC) is reported as a PIBs anode, which exhibits excellent cyclability and superior …
Graphene-Oxide-Loaded Superparamagnetic Iron Oxide Nanoparticles For Ultrasensitive Electrocatalytic Detection Of Microrna, Md Nazmul Islam, Lena Gorgannezhad, Mostafa Kamal Masud, Shunsuke Tanaka, Md. Shahriar Al Hossain, Yusuke Yamauchi, Nam-Trung Nguyen, Muhammad J. A Shiddiky
Graphene-Oxide-Loaded Superparamagnetic Iron Oxide Nanoparticles For Ultrasensitive Electrocatalytic Detection Of Microrna, Md Nazmul Islam, Lena Gorgannezhad, Mostafa Kamal Masud, Shunsuke Tanaka, Md. Shahriar Al Hossain, Yusuke Yamauchi, Nam-Trung Nguyen, Muhammad J. A Shiddiky
Australian Institute for Innovative Materials - Papers
We report the electrocatalytic activity of a new class of superparamagnetic nanoparticles, graphene-oxide-loaded iron oxide (GO/IO hybrid material), towards the reduction of ruthenium hexaammine(III) chloride (Ru(NH3)6]3+, RuHex). Leveraging the electrocatalytic activity of the GO/IO hybrid material and the signal enhancement capacity of [Ru(NH3)6]3+/[Fe(CN)6]3 in an electrocatalytic cycle, an ultrasensitive and specific electrochemical sensor was developed for the detection of cancerrelated microRNA (miRNA). Using the direct affinity interaction between RNA and graphene oxide, magnetically isolated and purified target miRNA were directly adsorbed onto a screenprinted electrode modified with the GO/IO hybrid material. The detection was enabled by chronocoulometric (CC) readout of …
Thermally Responsive Torsional And Tensile Fiber Actuator Based On Graphene Oxide, Hyunsoo Kim, Ji Hwan Moon, Tae Jin Mun, Tae Gyu Park, Geoffrey M. Spinks, Gordon G. Wallace, Seon Jeong Kim
Thermally Responsive Torsional And Tensile Fiber Actuator Based On Graphene Oxide, Hyunsoo Kim, Ji Hwan Moon, Tae Jin Mun, Tae Gyu Park, Geoffrey M. Spinks, Gordon G. Wallace, Seon Jeong Kim
Australian Institute for Innovative Materials - Papers
Graphene-based actuators are of practical interest because of their relatively low cost compared with other nanocarbon materials, such as carbon nanotubes. We demonstrate the simple fabrication of graphene oxide (GO)-based fibers with an infiltrated nylon-6,6 polymer by wet spinning. These fibers could be twisted to form torsional actuators and further coiled to form tensile actuators. By controlling the relative twisting and coiling direction of the GO/nylon fiber, we were able to realize reversible contraction or elongation actuation with strokes as high as -80 and 75%, respectively, when the samples were heated to 200 °C. The tensile actuation showed a remarkably …
A 3d Conductive Scaffold With Lithiophilic Modification For Stable Lithium Metal Batteries, Rensheng Song, Bo Wang, Ying Xie, Tingting Ruan, Fei Wang, Ye Yuan, Dianlong Wang, Shi Xue Dou
A 3d Conductive Scaffold With Lithiophilic Modification For Stable Lithium Metal Batteries, Rensheng Song, Bo Wang, Ying Xie, Tingting Ruan, Fei Wang, Ye Yuan, Dianlong Wang, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
In this study, a non-lithiophilic nickel foam (NF) was transformed into a 3D lithiophilic N-doped graphene/nickel foam (NGNF) scaffold by a simple hydrothermal method. This scaffold can increase the area for Li deposition, improve the poor lithiophilicity of NF, and decrease the overpotential for Li deposition, leading to uniform Li plating/stripping. Thus, the average coulombic efficiency for Li deposition on the NGNF electrode can remain as high as 98.3% over 200 cycles and 98.0% over 100 cycles at current densities of 2 mA cm-2and 4 mA cm-2, respectively. Even when the Li deposition capacity is increased to as high as …
Porous Zrc-Carbon Microspheres As Potential Insoluble Target Matrices For Production Of188W/188Re, Nicholas Scales, Jun Chen, Robert Aughterson, Inna Karatchevtseva, Attila Stopic, Gregory R. Lumpkin, Vittorio Luca
Porous Zrc-Carbon Microspheres As Potential Insoluble Target Matrices For Production Of188W/188Re, Nicholas Scales, Jun Chen, Robert Aughterson, Inna Karatchevtseva, Attila Stopic, Gregory R. Lumpkin, Vittorio Luca
Australian Institute for Innovative Materials - Papers
New microsphere sorbents are reported, which could find application in demanding radiation environments and especially as targets for the production of nuclear medicines by neutron irradiation. An easily-synthesized Zr anionic complex was introduced into quaternary amine-functionalised polystyrene-divinylbenzene-based anion-exchange resins by batch adsorption. Upon carbothermal reduction, the precursors were converted to porous carbon matrices containing particles of ZrC and ZrO2polymorphs. The most phase-pure material, ZrAX-1, possessed high surface area, multi-scale porosity and high mechanical strength. Adsorption of Re and W was investigated and its possible deployment as a reusable host for the production of188W/188Re is discussed.
3d Printed Electrodes For Improved Gas Reactant Transport For Electrochemical Reactions, Tania Benedetti Goncales, Andrew Nattestad, Adam Taylor, Stephen T. Beirne, Gordon G. Wallace
3d Printed Electrodes For Improved Gas Reactant Transport For Electrochemical Reactions, Tania Benedetti Goncales, Andrew Nattestad, Adam Taylor, Stephen T. Beirne, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Additive manufacturing (AM) techniques open up a range of new possibilities for the design of electrochemical systems, affording us the ability to overcome limitations and difficulties that traditional production processes face. Here we present a novel electrode design, realized through selective laser melting of metal powders, with an integrated gas (reactant) delivery system. This architecture results in significantly (∼40%) enhanced hydrogen oxidation performance as compared with a control system. As such, this work serves as a proof-of-concept to highlight the wide array of designs that can be readily achieved due to recent developments in AM technologies.
Heterostructure Manipulation Via In Situ Localized Phase Transformation For High-Rate And Highly Durable Lithium Ion Storage, Junnan Hao, Jian Zhang, Guanglin Xia, Yajie Liu, Yang Zheng, Wenchao Zhang, Yongbing Tang, Wei Kong Pang, Zaiping Guo
Heterostructure Manipulation Via In Situ Localized Phase Transformation For High-Rate And Highly Durable Lithium Ion Storage, Junnan Hao, Jian Zhang, Guanglin Xia, Yajie Liu, Yang Zheng, Wenchao Zhang, Yongbing Tang, Wei Kong Pang, Zaiping Guo
Australian Institute for Innovative Materials - Papers
Recently, heterostructures have attracted much attention in widespread research fields. By tailoring the physicochemical properties of the two components, creating heterostructures endows composites with diverse functions due to the synergistic effects and interfacial interaction. Here, a simple in situ localized phase transformation method is proposed to transform the transition-metal oxide electrode materials into heterostructures. Taking molybdenum oxide as an example, quasi-core-shell MoO3@MoO2heterostructures were successfully fabricated, which were uniformly anchored on reduced graphene oxide (rGO) for high-rate and highly durable lithium ion storage. The in situ introduction of the MoO2shell not only effectively enhances the electronic conductivity but also creates MoO3@MoO2heterojunctions …
Epitaxial Growth Of Ni(Oh)2 Nanoclusters On Mos2 Nanosheets For Enhanced Alkaline Hydrogen Evolution Reaction, Guoqiang Zhao, Yue Lin, Kun Rui, Qian Zhou, Yaping Chen, Shi Xue Dou, Wenping Sun
Epitaxial Growth Of Ni(Oh)2 Nanoclusters On Mos2 Nanosheets For Enhanced Alkaline Hydrogen Evolution Reaction, Guoqiang Zhao, Yue Lin, Kun Rui, Qian Zhou, Yaping Chen, Shi Xue Dou, Wenping Sun
Australian Institute for Innovative Materials - Papers
Constructing heterostructures is an effective strategy for designing efficient electrocatalysts. MoS2 is a star catalyst for hydrogen evolution reaction (HER) in acidic media; however, the alkaline HER activity is deficient due to the sluggish water dissociation process. Herein, Ni(OH)2/MoS2 heterostructures with Ni(OH)2 nanoclusters epitaxially decorated on the surface of MoS2 are synthesized towards the alkaline HER. As compared with MoS2, the epitaxial Ni(OH)2/MoS2 heterostructures show significantly enhanced HER activity in 1 M KOH, and the overpotential is decreased by nearly 150 mV to reach a current density of 10 mA cm-2. The substantial increase in turnover frequency (TOF) demonstrates that …
Field Dependence Of The Ferromagnetic/Superconducting Proximity Effect In A Ybco/Sto/Lcmo Multilayer, Oliver Paull, Alexey Pan, Grace Causer, Sergey Fedoseev, Antony Jones, Xinzhi Liu, Anatoly B. Rosenfeld, Frank Klose
Field Dependence Of The Ferromagnetic/Superconducting Proximity Effect In A Ybco/Sto/Lcmo Multilayer, Oliver Paull, Alexey Pan, Grace Causer, Sergey Fedoseev, Antony Jones, Xinzhi Liu, Anatoly B. Rosenfeld, Frank Klose
Australian Institute for Innovative Materials - Papers
The interaction between superconductivity and magnetism in spatially confined heterostructures of thin film multilayers is investigated in the ferromagnetic manganite La2/3Ca1/3MnO3 (LCMO) and the high-temperature superconductor YBa2Cu3O7-δ (YBCO) mediated by an intermediate insulating SrTiO3 (STO) layer. The STO layer is used to mediate and tune the range of interactions between the ferromagnet and superconductor. A magnetically depleted layer with zero-magnetisation within the LCMO layer is shown by polarised neutron reflectometry measurements. This zero-magnetisation layer is caused by the onset of superconductivity in YBCO despite being separated by an insulating layer with a thickness much larger than the superconducting coherence length. …
Synergistic Amplification Of Water Oxidation Catalysis On Pt By A Thin-Film Conducting Polymer Composite, Mohammed Alsultan, Sivakumar Balakrishnan, Jaecheol Choi, Rouhollah Jalili, Prerna Tiwari, Pawel W. Wagner, Gerhard F. Swiegers
Synergistic Amplification Of Water Oxidation Catalysis On Pt By A Thin-Film Conducting Polymer Composite, Mohammed Alsultan, Sivakumar Balakrishnan, Jaecheol Choi, Rouhollah Jalili, Prerna Tiwari, Pawel W. Wagner, Gerhard F. Swiegers
Australian Institute for Innovative Materials - Papers
Despite their potential for facilitating high activity, thin-film conducting polymer supports have, historically, expedited only relatively weak performances in catalytic water oxidation (with current densities in the μA/cm2 range). In this work, we have investigated the conditions under which thin-film conducting polymers may synergistically amplify catalysis. A composite conducting polymer film has been developed that, when overcoated on a bare Pt electrode, amplifies its catalytic performance by an order of magnitude (into the mA/cm2 range). When poised at 0.80 V (vs Ag/AgCl) at pH 12, a control, bare Pt electrode yielded a current density of 0.15 mA/cm2 for catalytic water …
Tetragonality Of Bcc Phases In A Transformation-Induced Plasticity Steel, Zhiping Xiong, David R. G Mitchell, Ahmed A. Saleh, Elena V. Pereloma
Tetragonality Of Bcc Phases In A Transformation-Induced Plasticity Steel, Zhiping Xiong, David R. G Mitchell, Ahmed A. Saleh, Elena V. Pereloma
Australian Institute for Innovative Materials - Papers
In a low-alloyed multi-phase transformation-induced plasticity steel, solute carbon content in polygonal ferrite, bainitic ferrite, and martensite was characterized using site-specific atom probe tomography. Selected area diffraction patterns were obtained using transmission electron microscopy, and the geometric distortion thereof was determined. The results showed that the lattice distortion increased in a sequence of polygonal ferrite, lath-like bainitic ferrite, and martensite. This increasing distortion corresponded to an increase in carbon content of the phase.
Systematically Study On The Magnetism And Critical Behaviour Of Layered Ndmn1.4cu0.6si2, M F. Md Din, J L. Wang, Y N. A Norizan, Precious Shamba, F R. Hashim, Nurul Idris, Wan W. Zamri
Systematically Study On The Magnetism And Critical Behaviour Of Layered Ndmn1.4cu0.6si2, M F. Md Din, J L. Wang, Y N. A Norizan, Precious Shamba, F R. Hashim, Nurul Idris, Wan W. Zamri
Australian Institute for Innovative Materials - Papers
The strong dependence of the field-induced on the body-centered tetragonal ThCr2Si2-type and the critical behaviour of magnetic phase transition in NdMn2-xCuxSi2based compounds guide us to study the substitution Mn (atomic radius = 1.35 Å) by Cu (atomic radius = 1.28 Å) in layered NdMn1.4Cu0.6Si2compound. Room temperature x-ray diffraction study indicates clearly that most of the reflections can be identified with ThCr2Si2-type structure with space group I4/mmm. It found lattice parameters a slightly increases and lattice parameter c decrease compare to NdMn2Si2as indicated the decreasing of volume structure. The Neel temperature TNis found at 340 K while Curie temperature TCfound at …
Hydration Layer Structure Of Biofouling-Resistant Nanoparticles, Paul J. Molino, Dan Yang, Matthew Penna, Keisuke Miyazawa, Brianna Knowles, Shane A. Maclaughlin, Takeshi Fukuma, Irene Yarovsky, Michael J. Higgins
Hydration Layer Structure Of Biofouling-Resistant Nanoparticles, Paul J. Molino, Dan Yang, Matthew Penna, Keisuke Miyazawa, Brianna Knowles, Shane A. Maclaughlin, Takeshi Fukuma, Irene Yarovsky, Michael J. Higgins
Australian Institute for Innovative Materials - Papers
Hydrophilic surface chemistries can strongly bind water to produce surfaces that are highly resistant to protein adsorption and fouling. The interfacial bound water and its distinct properties have intrigued researchers for decades, yet the relationship between the water three-dimensional structure and function in antifouling coatings remains elusive. Here, we use hydrophilic, epoxy organosilane modified silica nanoparticles to demonstrate cheap, robust, and practically applied coatings that we discover have broad-ranging, ultralow fouling properties when challenged by various proteins, bacteria, and fungal spores. To understand their excellent antifouling properties, frequency modulation-atomic force microscopy is used to directly observe the interfacial water structure …
Electrochemically In Situ Controllable Assembly Of Hierarchically-Ordered And Integrated Inorganic-Carbon Hybrids For Efficient Hydrogen Evolution, Zhongli Wang, Keju Sun, Joel Henzie, Xianfeng Hao, Yusuke Ide, Toshiaki Takei, Yoshio Bando, Yusuke Yamauchi
Electrochemically In Situ Controllable Assembly Of Hierarchically-Ordered And Integrated Inorganic-Carbon Hybrids For Efficient Hydrogen Evolution, Zhongli Wang, Keju Sun, Joel Henzie, Xianfeng Hao, Yusuke Ide, Toshiaki Takei, Yoshio Bando, Yusuke Yamauchi
Australian Institute for Innovative Materials - Papers
Inorganic-carbon hybrid materials are an emerging class of nanostructured catalysts that can enhance various energy-oriented electrochemical reactions. Despite recent progress, it is still very challenging to controllably generate the hybrid carbon architecture and its inorganic components with a single approach. Inspired by the flexible redox properties of conductive polyaniline (PANI) polymer, we develop a redox-unit cooperative assembly strategy to synthesize hierarchically-ordered and integrated inorganic-carbon hybrids by electrochemically constructing the nanostructures of PANI and then modifying their redox states to controllably bond different metal complexes. The needle-branched PANI nanofibers are assembled in situ into a three-dimensional (3D) hierarchical framework on carbon …
Realization Of Flat Band With Possible Nontrivial Topology In Electronic Kagome Lattice, Zhi Li, Jincheng Zhuang, Li Wang, Haifeng Feng, Qian Gao, Xun Xu, Weichang Hao, Xiaolin Wang, C Zhang, Ke-Hui Wu, Shi Xue Dou, Lan Chen, Zhenpeng Hu, Yi Du
Realization Of Flat Band With Possible Nontrivial Topology In Electronic Kagome Lattice, Zhi Li, Jincheng Zhuang, Li Wang, Haifeng Feng, Qian Gao, Xun Xu, Weichang Hao, Xiaolin Wang, C Zhang, Ke-Hui Wu, Shi Xue Dou, Lan Chen, Zhenpeng Hu, Yi Du
Australian Institute for Innovative Materials - Papers
The energy dispersion of fermions or bosons vanishes in momentum space if destructive quantum interference occurs in a frustrated Kagome lattice with only nearest-neighbor hopping. A discrete flat band (FB) without any dispersion is consequently formed, promising the emergence of fractional quantum Hall states at high temperatures. Here, we report the experimental realization of an FB with possible nontrivial topology in an electronic Kagome lattice on twisted multilayer silicene. Because of the unique low-buckled two-dimensional structure of silicene, a robust electronic Kagome lattice has been successfully induced by moiré patterns after twisting the silicene multilayers. The electrons are localized in …
Co2 Electrolysis In Seawater: Calcification Effect And A Hybrid Self-Powered Concept, Chong Yong Lee, Gordon G. Wallace
Co2 Electrolysis In Seawater: Calcification Effect And A Hybrid Self-Powered Concept, Chong Yong Lee, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Oceans are regarded as a sink for anthropogenic CO2; as such seawater provides an attractive electrolyte for electrochemical CO2 reduction to value-added carbon-based fuels and chemical feedstocks. However, the composition of seawater is inherently complex, containing multiple cations and anions that may participate in the CO2 electroreduction reaction. Herein, examination of a nanoporous Ag electrocatalyst in seawater reveals a significant influence of calcium ions on the electrochemical CO2 reduction performance. Under the applied cathodic potential and in the presence of CO2, calcium ions in the seawater result in calcium carbonate deposition onto the nanoporous Ag, reducing active sites for CO2 …
Gold-Loaded Nanoporous Iron Oxide Cubes Derived From Prussian Blue As Carbon Monoxide Oxidation Catalyst At Room Temperature, Shunsuke Tanaka, Mohamed B. Zakaria, Yusuf Valentino Kaneti, Yohei Jikihara, Tsuruo Nakayama, Mukter Zaman, Yoshio Bando, Md. Shahriar Al Hossain, Dmitri Golberg, Yusuke Yamauchi
Gold-Loaded Nanoporous Iron Oxide Cubes Derived From Prussian Blue As Carbon Monoxide Oxidation Catalyst At Room Temperature, Shunsuke Tanaka, Mohamed B. Zakaria, Yusuf Valentino Kaneti, Yohei Jikihara, Tsuruo Nakayama, Mukter Zaman, Yoshio Bando, Md. Shahriar Al Hossain, Dmitri Golberg, Yusuke Yamauchi
Australian Institute for Innovative Materials - Papers
This work reports the preparation of carbon monoxide (CO) oxidation catalysts based on gold nanoparticles supported on nanoporous iron oxide cubes. By heat-treating Prussian blue (PB) cubes at various temperatures between 250-450 °C in air, nanoporous iron oxide cubes with surface areas up to 100 m2 g−1 are obtained. Owing to the relatively large surface area and nanoporous structure, the as-synthesized iron oxide cubes can be loaded with up to 11 wt% of Au nanoparticles without significant aggregation. When employed for CO oxidation, the Au-loaded nanoporous iron oxide cubes exhibit a high CO conversion rate of over 95% at room …
Enhancing The Critical Current Of Yba2cu3o7 Thin Films By Substrate Nanoengineering, Antony Jones, Simon K. H Lam, Jia Du, Sergey Rubanov, Alexey Pan
Enhancing The Critical Current Of Yba2cu3o7 Thin Films By Substrate Nanoengineering, Antony Jones, Simon K. H Lam, Jia Du, Sergey Rubanov, Alexey Pan
Australian Institute for Innovative Materials - Papers
The critical current density, J c, can be increased by introducing defects throughout YBa 2Cu 3O 7 superconducting thin films. We propose a new approach of substrate nanoengineering to produce well-controlled defects. LaAlO 3 substrates have been ion-etched with different 34 nm deep patterns prior to the deposition of the films. An annealing step at 1000 °C after substrate etching has been undertaken to negate the Ar-ion damage to the surface. The J c of the so-prepared samples measured at different temperatures has been compared to thin films deposited on plain substrates at the same time. In general, an increase …
Interfacial Contributions To Anomalous Hall Effect In Perpendicular Magnetic Anisotropic [Co2mnsi/Pd]3 Multilayer, Huarui Fu, Caiyin You, Li Ma, Na Tian, Fangqing Xin, Zhenxiang Cheng, Adham Basha, Amit Kohn
Interfacial Contributions To Anomalous Hall Effect In Perpendicular Magnetic Anisotropic [Co2mnsi/Pd]3 Multilayer, Huarui Fu, Caiyin You, Li Ma, Na Tian, Fangqing Xin, Zhenxiang Cheng, Adham Basha, Amit Kohn
Australian Institute for Innovative Materials - Papers
Through engineering the interface between Co2MnSi and Pd, we realize a high perpendicular magnetic anisotropy (PMA) and controllable anomalous Hall effect (AHE) in [Co2MnSi(tCMS)/Pd]3multilayers. The multilayers are characterized by a particulatelike layer morphology following annealing at 573 K with weak B2 crystallographic ordering of the Co2MnSi layer. The largest PMA (Keff) of 1.2x106erg/cm3 has been obtained in [Co2MnSi(1.2nm)/Pd]3 multilayer annealed at 573 K. The AHE can be tuned, which we attribute to a varying proximity effect at the Co2MnSi/Pd interface, by varying the annealing temperature and Co2MnSi thickness. According to the expanded AHE scaling relation, we calculate the different contributions …
Homogeneous Sulfur-Cobalt Sulfide Nanocomposites As Lithium-Sulfur Battery Cathodes With Enhanced Reaction Kinetics, Mengmeng Lao, Guoqiang Zhao, Xin Li, Yaping Chen, Shi Xue Dou, Wenping Sun
Homogeneous Sulfur-Cobalt Sulfide Nanocomposites As Lithium-Sulfur Battery Cathodes With Enhanced Reaction Kinetics, Mengmeng Lao, Guoqiang Zhao, Xin Li, Yaping Chen, Shi Xue Dou, Wenping Sun
Australian Institute for Innovative Materials - Papers
Lithium sulfur (Li-S) batteries, as promising alternatives to lithium ion batteries (LIBs), are drawing significant attention owing to their high theoretical capacity and energy density. However, the sluggish reaction kinetics and poor cycling stability have remained a great challenge, hindering the practical application of Li-S batteries. Herein, sulfur-cobalt sulfide nanocomposites with tunable sulfur content were synthesized via a facile one-pot refluxing method towards enhanced reaction kinetics for Li-S batteries. Uniform distribution of sulfur and cobalt sulfide at the nanoscale was achieved in the composites. The sulfur-cobalt sulfide nanocomposites delivered higher specific capacities and significantly enhanced rate performance compared to bulk …