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Articles 1 - 30 of 136
Full-Text Articles in Physical Sciences and Mathematics
Evidencing Extrinsic Stacking Faults In Twinning-Induced Plasticity Steel, Gilberto Casillas, Azdiar A. Gazder, Elena V. Pereloma, Ahmed A. Saleh
Evidencing Extrinsic Stacking Faults In Twinning-Induced Plasticity Steel, Gilberto Casillas, Azdiar A. Gazder, Elena V. Pereloma, Ahmed A. Saleh
Australian Institute for Innovative Materials - Papers
In twinning induced plasticity (TWIP) steel, the question of what leads to the onset of twinning in grains whose (100) orientations are near parallel to the tensile axis at high tensile strains has not been resolved. Using aberration corrected scanning transmission microscopy we present first-hand evidence that extrinsic stacking faults serve as nuclei for twins in (100) grains and also contribute to twin growth in a low carbon TWIP steel uniaxially tensile loaded up to its ultimate tensile strength of ~ 1080 MPa; which corresponds to a tensile true strain of 48%. The results corroborate and validate our previous Schmid …
A Bladder-Free, Non-Fluidic, Conductive Mckibben Artificial Muscle Operated Electrothermally, Danial Sangian, Javad Foroughi, Syamak Farajikhah, Sina Naficy, Geoffrey M. Spinks
A Bladder-Free, Non-Fluidic, Conductive Mckibben Artificial Muscle Operated Electrothermally, Danial Sangian, Javad Foroughi, Syamak Farajikhah, Sina Naficy, Geoffrey M. Spinks
Australian Institute for Innovative Materials - Papers
Fluidic McKibben artificial muscles that operate pneumatically or hydraulically provide excellent performance, but require bulky pumps/compressors, valves and connecting lines. Use of a pressure generating material, such as thermally expanding paraffin wax, can eliminate the need for these pumps and associated infrastructure. Here we further develop this concept by introducing the first bladderless McKibben muscle wherein molten paraffin is contained by surface tension within a tailored braid. Incorporation of electrically conductive wires in the braid allows for convenient Joule heating of the paraffin. The muscle is light (0.14 g) with a diameter of 1.4mm and is capable of generating a …
Iron And Nickel Doped Cose2 As Efficient Non Precious Metal Catalysts For Oxygen Reduction, Beibei Yu, Jiayi Jin, Huimin Wu, Shengfu Wang, Qinghua Xia, Hua-Kun Liu
Iron And Nickel Doped Cose2 As Efficient Non Precious Metal Catalysts For Oxygen Reduction, Beibei Yu, Jiayi Jin, Huimin Wu, Shengfu Wang, Qinghua Xia, Hua-Kun Liu
Australian Institute for Innovative Materials - Papers
Iron and nickel doped CoSe2 were prepared by solvothermal method, and they were proved to be ternary chalcogenides by series of physical characterization. The effects of the iron and nickel contents on the oxygen reduction reaction were investigated by electrochemical measurements, and the highest activities were obtained on Co0.7Fe0.3Se2 and Co0.7Ni0.3Se2, respectively. Both Co0.7Fe0.3Se2 and Co0.7Ni0.3Se2 presented four-electron pathway. Furthermore, Co0.7Fe0.3Se2 exhibited more positive cathodic peak potential (0.564 V) and onset potential (0.759 V) than these of Co0.7Ni0.3Se2 (0.558 V and 0.741 V). And Co0.7Fe0.3Se2 displayed even superior stability and better tolerance to methanol, ethanol and ethylene glycol crossover effects …
Direct Regeneration Of Cathode Materials From Spent Lithium Iron Phosphate Batteries Using A Solid Phase Sintering Method, X Song, T Hu, C Liang, H L. Long, L Zhou, W Song, L You, Z S. Wu, J W. Liu
Direct Regeneration Of Cathode Materials From Spent Lithium Iron Phosphate Batteries Using A Solid Phase Sintering Method, X Song, T Hu, C Liang, H L. Long, L Zhou, W Song, L You, Z S. Wu, J W. Liu
Australian Institute for Innovative Materials - Papers
A direct regeneration of cathode materials from spent LiFePO4 batteries using a solid phase sintering method has been proposed in this article. The spent battery is firstly dismantled to separate the cathode and anode plate, and then the cathode plate is soaked in DMAC organic solvent to separate the cathode materials and Al foil at optimal conditions of 30 min at 30 °C and solid liquid ratio of 1[thin space (1/6-em)]:[thin space (1/6-em)]20 g ml−1. XRD and SEM results of the spent LiFePO4 after separation show that there are some impurity phase components and irregular morphologies with many agglomerations. The …
Electrical Stimulation Using Conductive Polymer Polypyrrole Counters Reduced Neurite Outgrowth Of Primary Prefrontal Cortical Neurons From Nrg1-Ko And Disc1-Li Mice, Qingsheng Zhang, Dorna Esrafilzadeh, Jeremy Micah Crook, Robert M. I Kapsa, Elise M. Stewart, Eva Tomaskovic-Crook, Gordon G. Wallace, Xu-Feng Huang
Electrical Stimulation Using Conductive Polymer Polypyrrole Counters Reduced Neurite Outgrowth Of Primary Prefrontal Cortical Neurons From Nrg1-Ko And Disc1-Li Mice, Qingsheng Zhang, Dorna Esrafilzadeh, Jeremy Micah Crook, Robert M. I Kapsa, Elise M. Stewart, Eva Tomaskovic-Crook, Gordon G. Wallace, Xu-Feng Huang
Australian Institute for Innovative Materials - Papers
Deficits in neurite outgrowth, possibly involving dysregulation of risk genes neuregulin-1 (NRG1) and disrupted in schizophrenia 1 (DISC1) have been implicated in psychiatric disorders including schizophrenia. Electrical stimulation using conductive polymers has been shown to stimulate neurite outgrowth of differentiating human neural stem cells. This study investigated the use of the electroactive conductive polymer polypyrrole (Ppy) to counter impaired neurite outgrowth of primary pre-frontal cortical (PFC) neurons from NRG1-knock out (NRG1-KO) and DISC1-locus impairment (DISC1-LI) mice. Whereas NRG1-KO and DISC1-LI exhibited reduced neurite length and number of neurite branches compared to wild-type controls, this was not apparent for cultures on …
Strategies For Designing Metal Oxide Nanostructures, Ziqi Sun, Ting Liao, Liangzhi Kou
Strategies For Designing Metal Oxide Nanostructures, Ziqi Sun, Ting Liao, Liangzhi Kou
Australian Institute for Innovative Materials - Papers
There has been exponential growth in research activities on nanomaterials and nanotechnology for applications in emerging technologies and sustainable energy in the past decade. The properties of nanomaterials have been found to vary in terms of their shapes, sizes, and number of nanoscale dimensions, which have also further boosted the performance of nanomaterial-based electronic, catalytic, and sustainable energy conversion and storage devices. This reveals the importance and, indeed, the linchpin role of nanomaterial synthesis for current nanotechnology and high-performance functional devices. In this review, we provide an overview of the synthesis strategies for designing metal oxide nanomaterials in zero-dimensional (0D), …
3d Printing Of Tough Hydrogel Composites With Spatially Varying Materials Properties, Shannon Bakarich, Robert A. Gorkin Iii, Reece Gately, Sina Naficy, Marc In Het Panhuis, Geoffrey M. Spinks
3d Printing Of Tough Hydrogel Composites With Spatially Varying Materials Properties, Shannon Bakarich, Robert A. Gorkin Iii, Reece Gately, Sina Naficy, Marc In Het Panhuis, Geoffrey M. Spinks
Australian Institute for Innovative Materials - Papers
Biofabrication is the process of transforming materials into systems that reproduce biological structure and function. Previous attempts to create biomimetic systems have often used single materials shaped into limited configurations that do not mimic the heterogeneous structure and properties of many biological tissues. The identification of new bio-inspired materials alongside the development of appropriate fabrication techniques is the key to overcoming the challenge of replicating the functional gradients of these heterogeneous tissues. This paper presents a new extrusion-based gradient printing system that utilizes custom software to control the rates at which two inks are dispensed through a mixing nozzle. The …
Spin Texture On Top Of Flux Avalanches In Nb/Al2o3/Co Thin Film Heterostructures, R F. Lopes, D Carmo, F Colauto, Wilson Aires Ortiz, A M H De Andrade, Tom H. Johansen, E Baggio-Saitovitch, P Pureur
Spin Texture On Top Of Flux Avalanches In Nb/Al2o3/Co Thin Film Heterostructures, R F. Lopes, D Carmo, F Colauto, Wilson Aires Ortiz, A M H De Andrade, Tom H. Johansen, E Baggio-Saitovitch, P Pureur
Australian Institute for Innovative Materials - Papers
We report on magneto-optical imaging, magnetization, Hall effect, and magneto-resistance experiments in Nb/Al2O3/Co thin film heterostructures. The magneto-transport measurements were performed in samples where electrical contacts were placed on the Co layer. The magnetic field is applied perpendicularly to the plane of the film and gives rise to abrupt flux penetration of dendritic form. A magnetization texture is imprinted in the Co layer in perfect coincidence with these ramifications. The spin domains that mimic the vortex dendrites are stable upon the field removal. Moreover, the imprinted spin structure remains visible up to room temperature. In the region of the field-temperature …
Electrically Stimulated Adipose Stem Cells On Polypyrrole-Coated Scaffolds For Smooth Muscle Tissue Engineering, Miina M. Bjorninen, Kerry J. Gilmore, Jani M. Pelto, Riitta Seppanen-Kaijansinkko, Minna Kellomaki, Susanna S. Miettinen, Gordon G. Wallace, Dirk Grijpma, Suvi P. Haimi
Electrically Stimulated Adipose Stem Cells On Polypyrrole-Coated Scaffolds For Smooth Muscle Tissue Engineering, Miina M. Bjorninen, Kerry J. Gilmore, Jani M. Pelto, Riitta Seppanen-Kaijansinkko, Minna Kellomaki, Susanna S. Miettinen, Gordon G. Wallace, Dirk Grijpma, Suvi P. Haimi
Australian Institute for Innovative Materials - Papers
We investigated the use of polypyrrole (PPy)-coated polymer scaffolds and electrical stimulation (ES) to differentiate adipose stem cells (ASCs) towards smooth muscle cells (SMCs). Since tissue engineering lacks robust and reusable 3D ES devices we developed a device that can deliver ES in a reliable, repeatable, and cost-efficient way in a 3D environment. Long pulse (1 ms) or short pulse (0.25 ms) biphasic electric current at a frequency of 10 Hz was applied to ASCs to study the effects of ES on ASC viability and differentiation towards SMCs on the PPy-coated scaffolds. PPy-coated scaffolds promoted proliferation and induced stronger calponin, …
Improved Reversibility Of Fe3+/Fe4+ Redox Couple In Sodium Super Ion Conductor Type Na3fe2(Po4)3 For Sodium-Ion Batteries, Ranjusha Rajagopalan, Bo Chen, Zhicheng Zhang, Xing Long Wu, Yonghua Du, Ying Huang, Bing Li, Yun Zong, Jie Wang, Gwang-Hyeon Nam, Melinda Sindoro, Shi Xue Dou, Hua-Kun Liu, Hua Zhang
Improved Reversibility Of Fe3+/Fe4+ Redox Couple In Sodium Super Ion Conductor Type Na3fe2(Po4)3 For Sodium-Ion Batteries, Ranjusha Rajagopalan, Bo Chen, Zhicheng Zhang, Xing Long Wu, Yonghua Du, Ying Huang, Bing Li, Yun Zong, Jie Wang, Gwang-Hyeon Nam, Melinda Sindoro, Shi Xue Dou, Hua-Kun Liu, Hua Zhang
Australian Institute for Innovative Materials - Papers
The methodology employed here utilizes the sodium super ion conductor type sodium iron phosphate wrapped with conducting carbon network to generate a stable Fe3+/Fe4+ redox couple, thereby exhibiting higher operating voltage and energy density of sodium-ion batteries. This new class of sodium iron phosphate wrapped by carbon also displays a cycling stability with >96% capacity retention after 200 cycles.
Solid Cryogen: A Cooling System For Future Mgb2 Mri Magnet, Dipakkumar Patel, Md Shahriar Hossain, Wenbin Qiu, Hyunseock Jie, Yusuke Yamauchi, Minoru Maeda, Michael Tomsic, Seyong Choi, Jung Ho Kim
Solid Cryogen: A Cooling System For Future Mgb2 Mri Magnet, Dipakkumar Patel, Md Shahriar Hossain, Wenbin Qiu, Hyunseock Jie, Yusuke Yamauchi, Minoru Maeda, Michael Tomsic, Seyong Choi, Jung Ho Kim
Australian Institute for Innovative Materials - Papers
An efficient cooling system and the superconducting magnet are essential components of magnetic resonance imaging (MRI) technology. Herein, we report a solid nitrogen (SN2) cooling system as a valuable cryogenic feature, which is targeted for easy usability and stable operation under unreliable power source conditions, in conjunction with a magnesium diboride (MgB 2) superconducting magnet. The rationally designed MgB 2/SN2 cooling system was first considered by conducting a finite element analysis simulation, and then a demonstrator coil was empirically tested under the same conditions. In the SN2 cooling system design, a wide temperature distribution on the SN2 chamber was observed …
Effective Area And Charge Density Of Iridium Oxide Neural Electrodes, Alexander R. Harris, Antonio G. Paolini, Gordon G. Wallace
Effective Area And Charge Density Of Iridium Oxide Neural Electrodes, Alexander R. Harris, Antonio G. Paolini, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
The effective electrode area and charge density of iridium metal and anodically activated iridium has been measured by optical and electrochemical techniques. The degree of electrode activation could be assessed by changes in electrode colour. The reduction charge, activation charge, number of activation pulses and charge density were all strongly correlated. Activated iridium showed slow electron transfer kinetics for reduction of a dissolved redox species. At fast voltammetric scan rates the linear diffusion electroactive area was unaffected by iridium activation. At slow voltammetric scan rates, the steady state diffusion electroactive area was reduced by iridium activation. The steady state current …
Nanoscale Analyses Of The Surface Structure And Composition Of Biochars Extracted From Field Trials Or After Co-Composting Using Advanced Analytical Electron Microscopy, B Archanjo, M Mendoza, M Albu, David R. G Mitchell, N Hagemann, C Mayrhofer, Thi Mai, Zhe Weng, A Kappler, S Behrens, Paul R. Munroe, C Achete, Scott Donne, J R. Araujo, Lukas Van Zwieten, Josip Horvat, A Enders, Stephen D. Joseph
Nanoscale Analyses Of The Surface Structure And Composition Of Biochars Extracted From Field Trials Or After Co-Composting Using Advanced Analytical Electron Microscopy, B Archanjo, M Mendoza, M Albu, David R. G Mitchell, N Hagemann, C Mayrhofer, Thi Mai, Zhe Weng, A Kappler, S Behrens, Paul R. Munroe, C Achete, Scott Donne, J R. Araujo, Lukas Van Zwieten, Josip Horvat, A Enders, Stephen D. Joseph
Australian Institute for Innovative Materials - Papers
Biochars have been recognized as an important material to improve soil properties. In a number of studies their beneficial properties have been found to increase with residence time in soil and during the composting process. The beneficial properties have been correlated with surface functional groups resulting from the interactions between char particles, inorganic and organic matter in the soil and soil biota. These interactions result in the formation of organo-mineral phases on the internal and external surfaces of the biochar. A paucity of information exists, particularly from longer-term field trials, on organo-mineral phases present on both the internal and external …
Multiple Stimuli-Responsive Fluorescence Behavior Of Novel Polyamic Acid Bearing Oligoaniline, Triphenylamine, And Fluorene Groups, Ying Yan, Ningwei Sun, Fangfei Li, Xiaoteng Jia, Ce Wang, Danming Chao
Multiple Stimuli-Responsive Fluorescence Behavior Of Novel Polyamic Acid Bearing Oligoaniline, Triphenylamine, And Fluorene Groups, Ying Yan, Ningwei Sun, Fangfei Li, Xiaoteng Jia, Ce Wang, Danming Chao
Australian Institute for Innovative Materials - Papers
Multiple stimuli-responsive fluorescent materials have gained increasing attention for their fundamental investigation and intelligent applications. In this work, we report design and synthesis of a novel polyamic acid bearing oligoaniline, triphenylamine, and fluorene groups, which served as sensitive units and fluorescence emission unit, respectively. The resulting polymer exhibits multiple stimuli-responsive fluorescence switching behavior triggered by redox species, pH, electrochemical, and pressure stimuli. Every fluorescence switching mechanism upon each stimulus was studied in detail. The interactions and energy transfer between sensitive units and emission unit are largely responsible for this fascinating fluorescent switching behavior. This work provides a deep understanding of …
Electrochemical Biosensing Strategies For Dna Methylation Analysis, Tanvir Hossain, Golam Mahmudunnabi, Mostafa Masud, Md Nazmul Islam, Lezanne Ooi, Konstantin K. Konstantinov, Md Shahriar Hossain, Boris Martinac, Gursel Alici, Nam-Trung Nguyen, Muhammad Shiddiky
Electrochemical Biosensing Strategies For Dna Methylation Analysis, Tanvir Hossain, Golam Mahmudunnabi, Mostafa Masud, Md Nazmul Islam, Lezanne Ooi, Konstantin K. Konstantinov, Md Shahriar Hossain, Boris Martinac, Gursel Alici, Nam-Trung Nguyen, Muhammad Shiddiky
Australian Institute for Innovative Materials - Papers
DNA methylation is one of the key epigenetic modifications of DNA that results from the enzymatic addition of a methyl group at the fifth carbon of the cytosine base. It plays a crucial role in cellular development, genomic stability and gene expression. Aberrant DNA methylation is responsible for the pathogenesis of many diseases including cancers. Over the past several decades, many methodologies have been developed to detect DNA methylation. These methodologies range from classical molecular biology and optical approaches, such as bisulfite sequencing, microarrays, quantitative real-time PCR, colorimetry, Raman spectroscopy to the more recent electrochemical approaches. Among these, electrochemical approaches …
Cooperative Electron-Phonon Coupling And Buckled Structure In Germanene On Au(111), Jincheng Zhuang, Nan Guo, Zhi Li, Xun Xu, Jiaou Wang, Jijun Zhao, Shi Xue Dou, Yi Du
Cooperative Electron-Phonon Coupling And Buckled Structure In Germanene On Au(111), Jincheng Zhuang, Nan Guo, Zhi Li, Xun Xu, Jiaou Wang, Jijun Zhao, Shi Xue Dou, Yi Du
Australian Institute for Innovative Materials - Papers
Germanene, a single-atom-thick germanium nanosheet in a honeycomb lattice, was proposed to be a Dirac fermion material beyond graphene. We performed scanning tunneling microscopy and in situ Raman spectroscopy studies combined with first-principles calculations on the atomic structures and the electronic and phonon properties of germanene on Au(111). The low-buckled 1 x 1 germanene honeycomb lattice was determined to exist in an unexpected rectangular √7 x √7 superstructure. Through in situ Raman measurements, distinctive vibrational phonon modes were discovered in √7 x √7 germanene, revealing the special coupling between the Dirac fermion and lattice vibrations, namely, electron-phonon coupling (EPC). The …
Enhanced Capacity And Cycle Life Of Nitrogen-Doped Activated Charcoal Anode For The Lithium Ion Battery: A Solvent-Free Approach, Chandrasekar Mayandi Subramaniyam, N Srinivasan, Zhixin Tai, Hua-Kun Liu, Shi Xue Dou
Enhanced Capacity And Cycle Life Of Nitrogen-Doped Activated Charcoal Anode For The Lithium Ion Battery: A Solvent-Free Approach, Chandrasekar Mayandi Subramaniyam, N Srinivasan, Zhixin Tai, Hua-Kun Liu, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
Herein, we investigated the electrochemical performance of nitrogen-doped commercial activated charcoal (R-AC) for lithium-ion batteries (LIBs). With this aim, nitrogen was doped into R-AC via a solvent-free approach, which involved annealing R-AC under N2 and NH3 atmospheres at 800 °C, and the product was tested as an anode for LIBs. The sample annealed under an NH3 atmosphere (NH-AC) had a nitrogen doping level of 4.7 at% with a specific surface area of 894.5 m2 g−1 and a reduced O/C ratio of 0.31 in comparison to the sample annealed under an N2 atmosphere (N-AC) and R-AC. Raman spectroscopy detected disorder/defects owing …
Incorporation Of Human-Platelet-Derived Growth Factor-Bb Encapsulated Poly(Lactic-Co-Glycolic Acid) Microspheres Into 3d Coragraf Enhances Osteogenic Differentiation Of Mesenchymal Stromal Cells, Saktiswaren Mohan, Hanumantharao Raghavendran, Puvanan Karunanithi, Malliga Murali, Sangeetha Naveen, Sepehr Talebian, Mohammad Mehrali, Mehdi Mehrali, Elango Natarajan, Chee Ken Chan, Tunku Kamarul
Incorporation Of Human-Platelet-Derived Growth Factor-Bb Encapsulated Poly(Lactic-Co-Glycolic Acid) Microspheres Into 3d Coragraf Enhances Osteogenic Differentiation Of Mesenchymal Stromal Cells, Saktiswaren Mohan, Hanumantharao Raghavendran, Puvanan Karunanithi, Malliga Murali, Sangeetha Naveen, Sepehr Talebian, Mohammad Mehrali, Mehdi Mehrali, Elango Natarajan, Chee Ken Chan, Tunku Kamarul
Australian Institute for Innovative Materials - Papers
Tissue engineering aims to generate or facilitate regrowth or healing of damaged tissues by applying a combination of biomaterials, cells, and bioactive signaling molecules. In this regard, growth factors clearly play important roles in regulating cellular fate. However, uncontrolled release of growth factors has been demonstrated to produce severe side effects on the surrounding tissues. In this study, poly(lactic-co-glycolic acid) (PLGA) microspheres (MS) incorporated three-dimensional (3D) CORAGRAF scaffolds were engineered to achieve controlled release of platelet-derived growth factor-BB (PDGF-BB) for the differentiation of stem cells within the 3D polymer network. Fourier transform infrared spectroscopy, energy-dispersive X-ray spectroscopy, scanning …
A Robust Free-Standing Mos2/Poly(3,4-Ethylenedioxythiophene):Poly(Styrenesulfonate) Film For Supercapacitor Applications, Yu Ge, Rouhollah Jalili, Caiyun Wang, Tian Zheng, Yunfeng Chao, Gordon G. Wallace
A Robust Free-Standing Mos2/Poly(3,4-Ethylenedioxythiophene):Poly(Styrenesulfonate) Film For Supercapacitor Applications, Yu Ge, Rouhollah Jalili, Caiyun Wang, Tian Zheng, Yunfeng Chao, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Two-dimensional molybdenum disulfide (MoS2) is a promising energy storage material due to its high surface area and unique electronic structure. Free-standing flexible MoS2-based electrode is of importance for use in flexible energy storage devices, whereas there are limited reports available. In this work we developed a robust hybrid film, MoS2 incorporated with highly conductive poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate). This free-standing film possesses excellent mechanical properties with a fracture strength of 18.0 MPa and a Young's modulus of 2.0 GPa. It can deliver a large volumetric capacitance of 141.4 F cm-3, a high volumetric energy density of 4.9 mWh cm-3, and a capacitance retention …
Photoexcited Terahertz Conductivity Dynamics Of Graphene Tuned By Oxygen-Adsorption, Zeyu Zhang, Tie Lin, Xiao Xing, Xian Lin, Xiangjian Meng, Zhenxiang Cheng, Zuanming Jin, Guohong Ma
Photoexcited Terahertz Conductivity Dynamics Of Graphene Tuned By Oxygen-Adsorption, Zeyu Zhang, Tie Lin, Xiao Xing, Xian Lin, Xiangjian Meng, Zhenxiang Cheng, Zuanming Jin, Guohong Ma
Australian Institute for Innovative Materials - Papers
By using optical pump-terahertz (THz) probe spectroscopy, the photoexcited terahertz conductivity dynamics of chemical vapor deposition grown graphene is investigated in different atmospheric environments. It is shown that the Fermi energy of doped graphene is engineered by oxygen adsorption and desorption, which is probed by transient THz conductivity measurement. We show that the ultrafast energy relaxation processes depend on Fermi energy (changed by environmental gas) and the density of excited carriers (changed by photo-excitation fluence). The rise process of the negative conductivity dynamics becomes less efficient upon decreasing the Fermi energy and/or increasing the pump fluence. All findings show that …
High-Performance Hybrid Carbon Nanotube Fibers For Wearable Energy Storage, Zan Lu, Yunfeng Chao, Yu Ge, Javad Foroughi, Yong Zhao, Caiyun Wang, Hairu Long, Gordon G. Wallace
High-Performance Hybrid Carbon Nanotube Fibers For Wearable Energy Storage, Zan Lu, Yunfeng Chao, Yu Ge, Javad Foroughi, Yong Zhao, Caiyun Wang, Hairu Long, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Wearable energy storage devices are of practical interest, but few have been commercially exploited. Production of electrodes with extended cycle life, as well as high energy and power densities, coupled with flexibility, remains a challenge. Herein, we have demonstrated the development of a high-performance hybrid carbon nanotube (CNT) fiber-based supercapacitor for the first time using conventional wet-spinning processes. Manganese dioxide (MnO2) nanoflakes were deposited onto the as-prepared CNT fibers by electrodeposition to form highly flexible nanocomposites fibers. As-prepared fibers were characterized by electron microscopy, electrical, mechanical, and electrochemical measurements. It was found that the specific capacitance was over 152 F …
Graphene Aerogel Supported Crystalline Zno@Amorphous Zn2geo4 Core-Shell Hierarchical Structure For Lithium Storage, Meng Jiang, Tengfei Zhou, Wei Liu, Chuanqi Feng, Jianwen Liu, Zaiping Guo
Graphene Aerogel Supported Crystalline Zno@Amorphous Zn2geo4 Core-Shell Hierarchical Structure For Lithium Storage, Meng Jiang, Tengfei Zhou, Wei Liu, Chuanqi Feng, Jianwen Liu, Zaiping Guo
Australian Institute for Innovative Materials - Papers
Fabricating a combined amorphous and crystalline hierarchical structure is a promising strategy to further improve the electrochemical performance of electrode materials, because it will provide additional opportunities for altering and manipulating the electrolyte adsorption and ion migratory dynamics in the lithium storage process. In this work, a crystalline-amorphous core-shell ZnO/Zn2GeO4/graphene aerogel with a three-dimensional structure has been successfully fabricated and shows enhanced stability and electrochemical performances.
New Insight Into Magneto-Structural Phase Transitions In Layered Tbmn2 Ge2-Based Compounds, Chunsheng Fang, Guoxing Li, Jian Li Wang, Wayne D. Hutchison, Qing Yon Ren, Zhenyan Deng, Guohong Ma, Shi Xue Dou, Stewart J. Campbell, Zhenxiang Cheng
New Insight Into Magneto-Structural Phase Transitions In Layered Tbmn2 Ge2-Based Compounds, Chunsheng Fang, Guoxing Li, Jian Li Wang, Wayne D. Hutchison, Qing Yon Ren, Zhenyan Deng, Guohong Ma, Shi Xue Dou, Stewart J. Campbell, Zhenxiang Cheng
Australian Institute for Innovative Materials - Papers
The Tb1−xYxMn2Ge2 series (x = 0, 0.1, 0.2) compounds are found to exhibit two magnetic phase transitions with decreasing temperature: from the paramagnetic state to the antiferromagnetic interlayer state at TNinter and from an antiferromagnetic interlayer structure to a collinear ferrimagnetic interlayer structure at TCinter. Compared with the slight change of TNinter (409 K, 410 K and 417 K for x = 0, 0.1 and 0.2 respectively), the replacement of Y for Tb leads to a significant decrease in TCinter from 97.5 K for x = 0 to 74.6 K for x = 0.2. The variation in TCinter can be …
Garnet-Type Fast Li-Ion Conductors With High Ionic Conductivities For All-Solid-State Batteries, Jiang-Fang Wu, Wei Kong Pang, Vanessa K. Peterson, Lu Wei, Xin Guo
Garnet-Type Fast Li-Ion Conductors With High Ionic Conductivities For All-Solid-State Batteries, Jiang-Fang Wu, Wei Kong Pang, Vanessa K. Peterson, Lu Wei, Xin Guo
Australian Institute for Innovative Materials - Papers
All-solid-state Li-ion batteries with metallic Li anodes and solid electrolytes could offer superior energy density and safety over conventional Li-ion batteries. However, compared with organic liquid electrolytes, the low conductivity of solid electrolytes and large electrolyte/electrode interfacial resistance impede their practical application. Garnet-type Li-ion conducting oxides are among the most promising electrolytes for all-solid-state Li-ion batteries. In this work, the large-radius Rb is doped at the La site of cubic Li6.10Ga0.30La3Zr2O12 to enhance the Li-ion conductivity for the first time. The Li6.20Ga0.30La2.95Rb0.05Zr2O12 electrolyte exhibits a Li-ion conductivity of 1.62 mS cm-1 at room temperature, which is the highest conductivity reported …
Doping-Induced Isotopic Mg11b2 Bulk Superconductor For Fusion Application, Qi Cai, Qianying Guo, Yongchang Liu, Zongqing Ma, Huijun Li, Wenbin Qiu, Dipakkumar Patel, Hyunseock Jie, Jung Ho Kim, Mehmet Somer, Ekrem Yanmaz, Arnaud Devred, Vladimir Luzin, Amanullah Fatehmulla, Wazirzada Farooq, Daniel Gajda, Yoshio Bando, Yusuke Yamauchi, Subrata Pradhan, Md Shahriar Hossain
Doping-Induced Isotopic Mg11b2 Bulk Superconductor For Fusion Application, Qi Cai, Qianying Guo, Yongchang Liu, Zongqing Ma, Huijun Li, Wenbin Qiu, Dipakkumar Patel, Hyunseock Jie, Jung Ho Kim, Mehmet Somer, Ekrem Yanmaz, Arnaud Devred, Vladimir Luzin, Amanullah Fatehmulla, Wazirzada Farooq, Daniel Gajda, Yoshio Bando, Yusuke Yamauchi, Subrata Pradhan, Md Shahriar Hossain
Australian Institute for Innovative Materials - Papers
Superconducting wires are widely used for fabricating magnetic coils in fusion reactors. Superconducting magnet system represents a key determinant of the thermal efficiency and the construction/operating costs of such a reactor. In consideration of the stability of 11B against fast neutron irradiation and its lower induced radioactivation properties, MgB2 superconductor with 11B serving as the boron source is an alternative candidate for use in fusion reactors with a severe high neutron flux environment. In the present work, the glycine-doped Mg11B2 bulk superconductor was synthesized from isotopic 11B powder to enhance the high field properties. The critical current density was enhanced …
Probe Sensor Using Nanostructured Multi-Walled Carbon Nanotube Yarn For Selective And Sensitive Detection Of Dopamine, Wed Al-Graiti, Zhilian Yue, Javad Foroughi, Xu-Feng Huang, Gordon G. Wallace, Ray H. Baughman, Jun Chen
Probe Sensor Using Nanostructured Multi-Walled Carbon Nanotube Yarn For Selective And Sensitive Detection Of Dopamine, Wed Al-Graiti, Zhilian Yue, Javad Foroughi, Xu-Feng Huang, Gordon G. Wallace, Ray H. Baughman, Jun Chen
Australian Institute for Innovative Materials - Papers
The demands for electrochemical sensor materials with high strength and durability in physiological conditions continue to grow and novel approaches are being enabled by the advent of new electromaterials and novel fabrication technologies. Herein, we demonstrate a probe-style electrochemical sensor using highly flexible and conductive multi-walled carbon nanotubes (MWNT) yarns. The MWNT yarn-based sensors can be fabricated onto micro Pt-wire with a controlled diameter varying from 100 to 300 µm, and then further modified with Nafion via a dip-coating approach. The fabricated micro-sized sensors were characterized by electron microscopy, Raman, FTIR, electrical, and electrochemical measurements. For the first time, the …
Self-Assembled Particulate Psaa As Vaccine Against Streptococcus Pneumoniae Infection, Majela Gonzalez-Miro, Laura Rodriguez-Noda, Mildrey Farinas-Medina, Dagmar Garcia-Rivera, Vicente Verez-Bencomo, Bernd H. Rehm
Self-Assembled Particulate Psaa As Vaccine Against Streptococcus Pneumoniae Infection, Majela Gonzalez-Miro, Laura Rodriguez-Noda, Mildrey Farinas-Medina, Dagmar Garcia-Rivera, Vicente Verez-Bencomo, Bernd H. Rehm
Australian Institute for Innovative Materials - Papers
Streptococcus pneumoniae is a human pathogen responsible for the majority of childhood pneumonia and media otitis cases worldwide. The diversity of its capsular polysaccharides (CPS) results in more than 91 serotypes of which at least 23 are virulent. Various CPS conjugated to immunogenic carrier proteins are currently licensed and provide protection against the infection caused by the respective serotypes but not against new and emerging virulent serotypes. In this study, we considered the conserved protein antigen PsaA, the pneumococcal surface adhesin A, in order to overcome the limitations of CPS antigens. The PsaA was translationally fused to a polyhydroxybutyrate (PHB) …
Mesoporous Metallic Rhodium Nanoparticles, Bo Jiang, Cuiling Li, Omer Dag, Hideki Abe, Toshiaki Takei, Tsubasa Imai, Md Shahriar Hossain, Md Tofazzal Islam, Kathleen Wood, Joel Henzie, Yusuke Yamauchi
Mesoporous Metallic Rhodium Nanoparticles, Bo Jiang, Cuiling Li, Omer Dag, Hideki Abe, Toshiaki Takei, Tsubasa Imai, Md Shahriar Hossain, Md Tofazzal Islam, Kathleen Wood, Joel Henzie, Yusuke Yamauchi
Australian Institute for Innovative Materials - Papers
Mesoporous noble metals are an emerging class of cutting-edge nanostructured catalysts due to their abundant exposed active sites and highly accessible surfaces. Although various noble metal (e.g. Pt, Pd and Au) structures have been synthesized by hard- and soft-- templating methods, mesoporous rhodium (Rh) nanoparticles have never been generated via chemical reduction, in part due to the relatively high surface energy of rhodium (Rh) metal. Here we describe a simple, scalable route to generate mesoporous Rh by chemical reduction on polymeric micelle templates [poly(ethylene oxide)-b-poly(methyl methacrylate) (PEO-b-PMMA)]. The mesoporous Rh nanoparticles exhibited a B2.6 times enhancement for the electrocatalytic oxidation …
Synthesis And Characterisation Of Mwnt/Chitosan And Mwnt/Chitosan-Crosslinked Buckypaper Membranes For Desalination, Ahmed Alshahrani, Habis Al-Zoubi, Long D. Nghiem, Marc In Het Panhuis
Synthesis And Characterisation Of Mwnt/Chitosan And Mwnt/Chitosan-Crosslinked Buckypaper Membranes For Desalination, Ahmed Alshahrani, Habis Al-Zoubi, Long D. Nghiem, Marc In Het Panhuis
Australian Institute for Innovative Materials - Papers
Novel buckypaper (BP) membranes for nanofiltration application were fabricated from multi-walled carbon nanotubes (MWNT) and biopolymer containing quaternary amine groups (chitosan and chitosan-crosslinked by in-situ amine crosslinking). Characteristics of the BP membranes were systematically characterized in terms of mechanical (tensile strengths varied between 49 ± 4 and 59 ± 3 MPa) and electrical properties (60 ± 1 to 70 ± 1 S/cm), contact angle (76 ± 3° to 102 ± 3°), surface morphology, membrane swelling, pore size, surface charge, solubility, water permeability (ranging from 019 ± 0.01 to 0.87 ± 0.03 L m-2 h-1 bar-1), and salts rejection (80-95% for …
Construction Of 2d Lateral Pseudoheterostructures By Strain Engineering, Haifeng Feng, Jincheng Zhuang, Ashley D. Slattery, Liang Wang, Zhongfei Xu, Xun Xu, David R. G Mitchell, Tian Zheng, Songlin Li, Michael J. Higgins, Long Ren, Ziqi Sun, Shi Xue Dou, Yi Du, Weichang Hao
Construction Of 2d Lateral Pseudoheterostructures By Strain Engineering, Haifeng Feng, Jincheng Zhuang, Ashley D. Slattery, Liang Wang, Zhongfei Xu, Xun Xu, David R. G Mitchell, Tian Zheng, Songlin Li, Michael J. Higgins, Long Ren, Ziqi Sun, Shi Xue Dou, Yi Du, Weichang Hao
Australian Institute for Innovative Materials - Papers
Two-dimensional (2D) lateral heterostructures host unconventional physical properties due to their controllable band-offset tuning and interfacial sensitive characteristic. The lattice mismatch results in the difficulties to construct the perfect atomic interface in such 2D lateral heterostructures, which in turn limits their desirable properties and performances in applications. In this work, strain-modulated 2D lateral pseudoheterogeneous structures are designed and realized in the singlecomponent 2D BiOBr nanosheets by taking advantage of their strain-sensitive crystal and electronic structures. The pseudoheterogeneous interface without atomic mismatch can be feasibly modulated by local strain distribution, which exhibits similar local electronic band structure of corresponding heterostructures. Significant …