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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 …
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 …
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 …
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 …
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 …
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) …
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 …
Self-Assembly Of Flexible Free-Standing 3d Porous Mos2-Reduced Graphene Oxide Structure For High-Performance Lithium-Ion Batteries, Yunfeng Chao, Rouhollah Jalili, Yu Ge, Caiyun Wang, Tian Zheng, Kewei Shu, Gordon G. Wallace
Self-Assembly Of Flexible Free-Standing 3d Porous Mos2-Reduced Graphene Oxide Structure For High-Performance Lithium-Ion Batteries, Yunfeng Chao, Rouhollah Jalili, Yu Ge, Caiyun Wang, Tian Zheng, Kewei Shu, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Flexible freestanding electrodes are highly desired to realize wearable/flexible batteries as required for the design and production of flexible electronic devices. Here, the excellent electrochemical performance and inherent flexibility of atomically thin 2D MoS2 along with the self-assembly properties of liquid crystalline graphene oxide (LCGO) dispersion are exploited to fabricate a porous anode for high-performance lithium ion batteries. Flexible, free-standing MoS2-reduced graphene oxide (MG) film with a 3D porous structure is fabricated via a facile spontaneous self-assembly process and subsequent freeze-drying. This is the first report of a one-pot self-assembly, gelation, and subsequent reduction of MoS2/LCGO composite to form a …
Hollow Carbon Nanobubbles: Monocrystalline Mof Nanobubbles And Their Pyrolysis, Wei Zhang, Xiangfen Jiang, Yanyi Zhao, Arnau Carne-Sanchez, Victor Malgras, Jeonghun Kim, Jung Ho Kim, Shaobin Wang, Jian Liu, Ji-Sen Jiang, Yusuke Yamauchi, Ming Hu
Hollow Carbon Nanobubbles: Monocrystalline Mof Nanobubbles And Their Pyrolysis, Wei Zhang, Xiangfen Jiang, Yanyi Zhao, Arnau Carne-Sanchez, Victor Malgras, Jeonghun Kim, Jung Ho Kim, Shaobin Wang, Jian Liu, Ji-Sen Jiang, Yusuke Yamauchi, Ming Hu
Australian Institute for Innovative Materials - Papers
While bulk-sized metal-organic frameworks (MOFs) face limits to their utilization in various research fields such as energy storage applications, nanoarchitectonics is believed to be a possible solution. It is highly challenging to realize MOF nanobubbles with monocrystalline frameworks. By a spatially controlled etching approach, here, we can achieve the synthesis of zeolitic imidazolate framework (ZIF-8) nanobubbles with a uniform size of less than 100 nm. Interestingly, the ZIF-8 nanobubbles possess a monocrystalline nanoshell with a thickness of around 10 nm. Under optimal pyrolytic conditions, the ZIF-8 nanobubbles can be converted into hollow carbon nanobubbles while keeping their original shapes. The …
Prussian Blue Derived Iron Oxide Nanoparticles Wrapped In Graphene Oxide Sheets For Electrochemical Supercapacitors, Shunsuke Tanaka, Rahul R. Salunkhe, Yusuf Valentino Kaneti, Victor Malgras, Saad M. Alshehri, Tansir Ahamad, Mohamed B. Zakaria, Shi Xue Dou, Yusuke Yamauchi, Md. Shahriar Al Hossain
Prussian Blue Derived Iron Oxide Nanoparticles Wrapped In Graphene Oxide Sheets For Electrochemical Supercapacitors, Shunsuke Tanaka, Rahul R. Salunkhe, Yusuf Valentino Kaneti, Victor Malgras, Saad M. Alshehri, Tansir Ahamad, Mohamed B. Zakaria, Shi Xue Dou, Yusuke Yamauchi, Md. Shahriar Al Hossain
Australian Institute for Innovative Materials - Papers
Hybrid materials have shown promising potential for energy storage applications, such as supercapacitors due to the combined properties or advantages of two (or more) individual constituents. In this work, we report the fabrication of a new composite which combines graphene oxide (GO) sheets with Prussian blue (PB) nanoparticles, which act as a precursor for iron oxide (IO). The GO/PB composite precursors with different GO:PB ratios can be successfully converted into nanoporous GO/IO hybrid composites through a thermal treatment in air at 400 °C. In the resulting GO/IO composites, the GO sheets are efficiently spaced due to the insertion of IO …
Superior Li Storage Anode Based On Novel Fe-Sn-P Alloy Prepared By Electroplating, Xiao Zheng, Peng Zhang, Liang Wang, Shan Tao, Yunxiao Wang, Ling Huang, Jun-Tao Li, Shi-Gang Sun
Superior Li Storage Anode Based On Novel Fe-Sn-P Alloy Prepared By Electroplating, Xiao Zheng, Peng Zhang, Liang Wang, Shan Tao, Yunxiao Wang, Ling Huang, Jun-Tao Li, Shi-Gang Sun
Australian Institute for Innovative Materials - Papers
Novel ternary Fe-Sn-P alloys prepared by simple single-step electrodeposition are investigated as promising anodes for Li-ion batteries. The Fe 51 Sn 38 P 11 electrode, in particular, shows outstanding Li-storage properties, with initial specific discharge/charge capacities of 857.8 and 655 mA h g ¿1 , respectively. The reversible capacity remains stable at 427 mA h g ¿1 , even after 90 cycles, corresponding to a coulombic efficiency of 96% and a capacity retention of 65%. The cauliflower-like morphology of the above anode is well preserved after 90 cycles, suggesting that this alloy could significantly mitigate the electrode volume expansion by …
High-Strength Graphene And Polyacrylonitrile Composite Fiber Enhanced By Surface Coating With Polydopamine, Hyunsoo Kim, Rouhollah Jalili, Geoffrey M. Spinks, Gordon G. Wallace, Seon Jeong Kim
High-Strength Graphene And Polyacrylonitrile Composite Fiber Enhanced By Surface Coating With Polydopamine, Hyunsoo Kim, Rouhollah Jalili, Geoffrey M. Spinks, Gordon G. Wallace, Seon Jeong Kim
Australian Institute for Innovative Materials - Papers
Carbon fibers are well-known reinforcing elements in advanced composites, but these materials remain expensive partly due to the complex processing methods used to form high strength and high modulus fibers. Graphene is seen as an alternative precursor for the formation of high strength carbon-based fibers. Here it is shown that the strength and modulus of graphene-based fibers are enhanced by incorporating a polyacrylonitrile (PAN) binder, surface coating with polydopamine (PDA) and through appropriate pyrolysis heat treatments. Fiber samples were prepared by a wet-spinning method such that the composition of liquid-crystalline graphene oxide (LCGO) and PAN could be varied over the …
Thermomechanical Effects In The Torsional Actuation Of Twisted Nylon 6 Fiber, Shazed Aziz, Sina Naficy, Javad Foroughi, Hugh Ralph Brown, Geoffrey M. Spinks
Thermomechanical Effects In The Torsional Actuation Of Twisted Nylon 6 Fiber, Shazed Aziz, Sina Naficy, Javad Foroughi, Hugh Ralph Brown, Geoffrey M. Spinks
Australian Institute for Innovative Materials - Papers
Thermally induced torsional and tensile actuators based on twisted polymeric fibers have opened new opportunities for the application of artificial muscles. These newly developed actuators show significant torsional deformations when subjected to temperature changes, and this torsional actuation is the defining mechanism for tensile actuation of twisted and coiled fibers. To date it has been found that these actuators require multiple heat/cool cycles (referred to as "training" cycles) prior to obtaining a fully reversible actuation response. Herein, the effect of annealing conditions applied to twisted nylon 6 monofilament is investigated and it is shown that annealing at 200°C eliminates the …
A Simple Silver Nanowire Patterning Method Based On Poly(Ethylene Glycol) Photolithography And Its Application For Soft Electronics, Youngsang Ko, Jeonghun Kim, Dabum Kim, Yusuke Yamauchi, Jung Ho Kim, Jungmok You
A Simple Silver Nanowire Patterning Method Based On Poly(Ethylene Glycol) Photolithography And Its Application For Soft Electronics, Youngsang Ko, Jeonghun Kim, Dabum Kim, Yusuke Yamauchi, Jung Ho Kim, Jungmok You
Australian Institute for Innovative Materials - Papers
Hydrogel-based flexible microelectrodes have garnered considerable attention recently for soft bioelectronic applications. We constructed silver nanowire (AgNW) micropatterns on various substrates, via a simple, cost-effective, and eco-friendly method without aggressive etching or lift-off processes. Polyethylene glycol (PEG) photolithography was employed to construct AgNW patterns with various shapes and sizes on the glass substrate. Based on a second hydrogel gelation process, AgNW patterns on glass substrate were directly transferred to the synthetic/natural hydrogel substrates. The resultant AgNW micropatterns on the hydrogel exhibited high conductivity (ca. 8.40 x 103 S cm-1) with low sheet resistance (7.51 ± 1.11¿/sq), excellent bending durability (increases …
3d-Printed Conical Arrays Of Tio2 Electrodes For Enhanced Photoelectrochemical Water Splitting, Chong Yong Lee, Adam Taylor, Stephen T. Beirne, Gordon G. Wallace
3d-Printed Conical Arrays Of Tio2 Electrodes For Enhanced Photoelectrochemical Water Splitting, Chong Yong Lee, Adam Taylor, Stephen T. Beirne, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Control over the topography of semiconducting materials can lead to enhanced performances in photoelectrochemical related applications. One means of implementing this is through direct patterning of metal-based substrates, though this is inadequately developed. Conventional techniques for patterned fabrication commonly involve technologically demanding and tedious processes. 3D printing, a form of additive fabrication, enables creation of a 3D object by deposition of successive layers of material via computer control. In this work, the feasibility of fabricating metal-based 3D printed photoelectrodes is explored. Electrodes comprised of conical arrays are fabricated and the performance for photoelectrochemical water splitting is further enhanced by the …
3d Bioprinting Human Induced Pluripotent Stem Cell Constructs For In Situ Cell Proliferation And Successive Multilineage Differentiation, Qi Gu, Eva Tomaskovic-Crook, Gordon G. Wallace, Jeremy Micah Crook
3d Bioprinting Human Induced Pluripotent Stem Cell Constructs For In Situ Cell Proliferation And Successive Multilineage Differentiation, Qi Gu, Eva Tomaskovic-Crook, Gordon G. Wallace, Jeremy Micah Crook
Australian Institute for Innovative Materials - Papers
The ability to create 3D tissues from induced pluripotent stem cells (iPSCs) is poised to revolutionize stem cell research and regenerative medicine, including individualized, patient-specific stem cell-based treatments. There are, however, few examples of tissue engineering using iPSCs. Their culture and differentiation is predominantly planar for monolayer cell support or induction of self-organizing embryoids (EBs) and organoids. Bioprinting iPSCs with advanced biomaterials promises to augment efforts to develop 3D tissues, ideally comprising direct-write printing of cells for encapsulation, proliferation, and differentiation. Here, such a method, employing a clinically amenable polysaccharide-based bioink, is described as the first example of bioprinting human …
Structure-Property Relationships Of Organic Electrolytes And Their Effects On Li/S Battery Performance, Mohammad Kaiser, Shulei Chou, Hua-Kun Liu, Shi Xue Dou, Chunsheng Wang, Jiazhao Wang
Structure-Property Relationships Of Organic Electrolytes And Their Effects On Li/S Battery Performance, Mohammad Kaiser, Shulei Chou, Hua-Kun Liu, Shi Xue Dou, Chunsheng Wang, Jiazhao Wang
Australian Institute for Innovative Materials - Papers
Electrolytes, which are a key component in electrochemical devices, transport ions between the sulfur/carbon composite cathode and the lithium anode in lithium-sulfur batteries (LSBs). The performance of a LSB mostly depends on the electrolyte due to the dissolution of polysulfides into the electrolyte, along with the formation of a solid-electrolyte interphase. The selection of the electrolyte and its functionality during charging and discharging is intricate and involves multiple reactions and processes. The selection of the proper electrolyte, including solvents and salts, for LSBs strongly depends on its physical and chemical properties, which is heavily controlled by its molecular structure. In …
The Origin Of Enhanced Photocatalytic Activities Of Hydrogenated Tio2 Nanoparticles, Yani Liu, Haifeng Feng, Xiaobing Yan, Jiaou Wang, Huagui Yang, Yi Du, Weichang Hao
The Origin Of Enhanced Photocatalytic Activities Of Hydrogenated Tio2 Nanoparticles, Yani Liu, Haifeng Feng, Xiaobing Yan, Jiaou Wang, Huagui Yang, Yi Du, Weichang Hao
Australian Institute for Innovative Materials - Papers
The photocatalytic activity of semiconductors is largely governed by their light absorption, separation of photoinduced charge carriers and surface catalytically active sites, which are primarily controlled by the morphology, crystalline size, structure, and especially the electronic structure of photocatalysts. Black TiO 2 is recognized as one of the most promising visible-light photocatalysts, due to its significantly enhanced visible-light photocatalytic performance in comparison to intrinsic TiO 2 . In this work, black TiO 2 is synthesized through the hydrogenation process. The sample shows a TiO 2 @TiO 2-x core/shell structure which is attributed to hydrogenation. By using X-ray photoelectron spectroscopy (XPS), …
Role Of Atomic Interaction In Electronic Hybridization In Two-Dimensional Ag2ge Nanosheets, Yundan Liu, Jincheng Zhuang, Chen Liu, Jiaou Wang, Xun Xu, Zhi Li, Jianxin Zhong, Yi Du
Role Of Atomic Interaction In Electronic Hybridization In Two-Dimensional Ag2ge Nanosheets, Yundan Liu, Jincheng Zhuang, Chen Liu, Jiaou Wang, Xun Xu, Zhi Li, Jianxin Zhong, Yi Du
Australian Institute for Innovative Materials - Papers
We performed low-temperature scanning tunneling microscopy, low-energy electron diffraction, angle-resolved photoemission spectroscopy, and in situ Raman spectroscopy to investigate the exotic electronic characteristics of the two-dimensional Ag 2 Ge surface alloy associated with Ge-Ag interactions. The dynamics of Ge insertion into the Ag(111) substrate has been identified, which is distinct due to the metalloid nature of Ge. The ordered structure of the Ag 2 Ge alloy is determined by the Ag-Ge interaction, which can be controlled by the coverage of Ge atoms on the Ag(111) surface. The linear dispersions of surface states across the Fermi level have been identified in …
Inkjet-Printed Planar Biochips For Interfacial Detection Of Biomoleculars, Jianglin Diao, Ailing Ding, Yuqing Liu, Joselito M. Razal, Jun Chen, Zhisong Lu, Bin Wang
Inkjet-Printed Planar Biochips For Interfacial Detection Of Biomoleculars, Jianglin Diao, Ailing Ding, Yuqing Liu, Joselito M. Razal, Jun Chen, Zhisong Lu, Bin Wang
Australian Institute for Innovative Materials - Papers
A planar three electrodes system (PTES) chip which is consisted of planar Au, Ag/AgCl, and Pt electrodes on ITO (Indium-Tin Oxide) glass is fabricated using state of the art inkjet printing technology to serve as biosensor for electrochemical detection of biomolecules. The electrochemical detection of melamine and dopamine is successfully performed with this PTES chip and established higher sensitivity in comparison with traditional commercial three electrode system, indicating this PTES chip has great potential in practical applications as electrochemical sensor for biomolecules.
Supply Chain Downstream Strategic Cost Evaluation Using L-Copras Method In Cross-Border E-Commerce, Lipeng Feng, Jun Ma, Yong Wang, Jie Yang
Supply Chain Downstream Strategic Cost Evaluation Using L-Copras Method In Cross-Border E-Commerce, Lipeng Feng, Jun Ma, Yong Wang, Jie Yang
SMART Infrastructure Facility - Papers
Cross-border E-commerce has grown exponentially in the past decade in global market. To gain global competition in product-convergent markets, China¿s over 200 thousands cross-border E-commerce businesses have focused more on the service and cost control of supply chain downstream. In this study, we analyse three strategic cost control measures, summarise ten evaluation criteria for cost and develop an evaluation method for cost control using an extended COmplex PRoportion ASsessment (COPRAS) method, named L-COPRAS. This method is proposed to deal with uncertain or linguistic expression on strategic cost measures with varied weights to different alternatives. A case study of helping a …
Cyber Security Incidents On Critical Infrastructure And Industrial Networks, Robert Ighodaro Ogie
Cyber Security Incidents On Critical Infrastructure And Industrial Networks, Robert Ighodaro Ogie
SMART Infrastructure Facility - Papers
National critical infrastructure and industrial processes are heavily reliant on automation, monitoring and control technologies, including the widely used Supervisory Control and Data Acquisition (SCADA) systems. The growing interconnection of these systems with corporate networks exposes them to cyber attacks, with several security incidents reported over the last few decades. This study provides a classification scheme for categorising security incidents related to critical infrastructure and industrial control systems. The classification scheme is applied to analyse 242 security incidents on critical infrastructure and industrial control networks, which were reported between 1982 and 2014. The results show interesting patterns, with key points …
An Adaptive Agent-Based Approach To Traffic Simulation, Johan Barthelemy, Timoteo Carletti
An Adaptive Agent-Based Approach To Traffic Simulation, Johan Barthelemy, Timoteo Carletti
SMART Infrastructure Facility - Papers
The aim of this work is to present the initial exploration of a behavioural Dynamic Traffic Assignment model, particularly suitable to be used and implemented in agent-based micro-simulations. The proposal relies on the assumption that travellers take routing policies rather than paths, leading us to introduce the possibility for each simulated agent to apply, in real time, a strategy allowing him to possibly re-route his path depending on the perceived local traffic conditions, jam and/or time spent. The re-routing process allows the agents to directly react to any change in the road network. For the sake of simplicity, the agents' …