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Full-Text Articles in Engineering

Creep Behaviour And Constitutive Model Of Coal Filled With Gas, Xiangchun Li, Chunli Yang, Ting X. Ren, Baisheng Nie, Caihong Zhao, Shuiwen Liu, Tao Jiang Jan 2017

Creep Behaviour And Constitutive Model Of Coal Filled With Gas, Xiangchun Li, Chunli Yang, Ting X. Ren, Baisheng Nie, Caihong Zhao, Shuiwen Liu, Tao Jiang

Faculty of Engineering and Information Sciences - Papers: Part B

Coal exhibits different creep behaviours when filled with different amounts of gas. Creep tests of coal filled with 0 and 0.5. MPa. gas were performed, and strain under different axial stress was compared. The three creep constitutive models which were analysed using the method fitting experimental data for determining which creep model can reflect the creep process of the test best. The results show that the deformation of coal filled with 0.5. MPa. gas is more higher than that of coal filled with 0. MPa. gas under the same axial stress. Gas plays a positive effect on the deformation of …


African Societal Challenges Transformation Through Iot, Salim Al Isma'ili, Mengxiang Li, Jun Shen, Qiang He, Abdulaziz Alghazi Jan 2017

African Societal Challenges Transformation Through Iot, Salim Al Isma'ili, Mengxiang Li, Jun Shen, Qiang He, Abdulaziz Alghazi

Faculty of Engineering and Information Sciences - Papers: Part B

No abstract provided.


Explicit Stress-Strain Equations For Modelling Frictional Materials, K J. Xu, Martin D. Liu, Buddhima Indraratna, Suksun Horpibulsuk Jan 2017

Explicit Stress-Strain Equations For Modelling Frictional Materials, K J. Xu, Martin D. Liu, Buddhima Indraratna, Suksun Horpibulsuk

Faculty of Engineering and Information Sciences - Papers: Part B

In this paper, a comprehensive study on simulating the shearing behavior of frictional materials is performed. A set of two explicit equations, describing the relationship among the shear stress ratio and the distortional strain and the volumetric strain, are formulated independently. The equations contain three stress parameters and three strain parameters and another parameter representing the nonuniformity of stress and strain during softening. All the parameters have clear physical significance and can be determined experimentally. It is demonstrated that the proposed equations have the capacity of simulating the complicated shearing behavior of many types of frictional materials including geomaterials. The …


Feasibility Of Free Breathing Lung Mri For Radiotherapy Using Non-Cartesian K-Space Acquisition Schemes, Shivani Kumar, Robba Rai, Alto Stemmer, Sonal Josan, Lois C. Holloway, Shalini K. Vinod, Daniel Moses, Gary P. Liney Jan 2017

Feasibility Of Free Breathing Lung Mri For Radiotherapy Using Non-Cartesian K-Space Acquisition Schemes, Shivani Kumar, Robba Rai, Alto Stemmer, Sonal Josan, Lois C. Holloway, Shalini K. Vinod, Daniel Moses, Gary P. Liney

Faculty of Engineering and Information Sciences - Papers: Part B

Objective:

To test a free-breathing MRI protocol for anatomical and functional assessment during lung cancer radiotherapy by assessing two non-Cartesian acquisition schemes based on T1 weighted 3D gradient recall echo sequence: (i) stack-of stars (StarVIBE) and (ii) spiral (SpiralVIBE) trajectories. Methods:

MR images on five healthy volunteers were acquired on a wide bore 3T scanner (MAGNETOM Skyra, Siemens Healthcare, Erlangen, Germany). Anatomical image quality was assessed on: (1) free breathing (StarVIBE), (2) the standard clinical sequence (volumetric interpolated breath-hold examination, VIBE) acquired in a 20 second (s) compliant breath-hold and (3) 20 s non-compliant breath-hold. For functional assessment, StarVIBE …


Optimal Control Based Stiffness Identification Of An Ankle-Foot Orthosis Using A Predictive Walking Model, Manish Sreenivasa, Matthew Millard, Martin Felis, Katja Mombaur, Sebastian I. Wolf Jan 2017

Optimal Control Based Stiffness Identification Of An Ankle-Foot Orthosis Using A Predictive Walking Model, Manish Sreenivasa, Matthew Millard, Martin Felis, Katja Mombaur, Sebastian I. Wolf

Faculty of Engineering and Information Sciences - Papers: Part B

Predicting the movements, ground reaction forces and neuromuscular activity during gait can be a valuable asset to the clinical rehabilitation community, both to understand pathology, as well as to plan effective intervention. In this work we use an optimal control method to generate predictive simulations of pathological gait in the sagittal plane. We construct a patient-specific model corresponding to a 7-year old child with gait abnormalities and identify the optimal spring characteristics of an ankle-foot orthosis that minimizes muscle effort. Our simulations include the computation of foot-ground reaction forces, as well as the neuromuscular dynamics using computationally efficient muscle torque …


Load And Moment Interaction Diagram For Circular Concrete Columns Reinforced With Gfrp Bars And Gfrp Helices, Hogr Karim, M Neaz Sheikh, Muhammad N. S Hadi Jan 2017

Load And Moment Interaction Diagram For Circular Concrete Columns Reinforced With Gfrp Bars And Gfrp Helices, Hogr Karim, M Neaz Sheikh, Muhammad N. S Hadi

Faculty of Engineering and Information Sciences - Papers: Part B

This paper presents analytical and experimental studies on the axial load-bending moment behavior of glass fiber-reinforced polymer (GFRP) bars and helices RC columns. The nominal axial load and bending moment of the columns were analyzed based on the stress-strain behavior of the cross-sectional components. A numerical integration method was used to determine the compressive force of concrete in the compression region. The analytical results were verified with experimental results of 12 circular specimens reinforced with GFRP bars and GFRP helices. Out of these 12 specimens, eight specimens were taken from available literature and four specimens were tested in this study. …


Role Of Membrane Fouling Substances On The Rejection Of N-Nitrosamines By Reverse Osmosis, Takahiro Fujioka, Hitoshi Kodamatani, Hidenobu Aizawa, Stephen Gray, Kenneth P. Ishida, Long D. Nghiem Jan 2017

Role Of Membrane Fouling Substances On The Rejection Of N-Nitrosamines By Reverse Osmosis, Takahiro Fujioka, Hitoshi Kodamatani, Hidenobu Aizawa, Stephen Gray, Kenneth P. Ishida, Long D. Nghiem

Faculty of Engineering and Information Sciences - Papers: Part B

The impact of fouling substances on the rejection of four N-nitrosamines by a reverse osmosis (RO) membrane was evaluated by characterizing individual organic fractions in a secondary wastewater effluent and deploying a novel high-performance liquid chromatography-photochemical reaction-chemiluminescence (HPLC-PR-CL) analytical technique. The HPLC-PR-CL analytical technique allowed for a systematic examination of the correlation between the fouling level and the permeation of N-nitrosamines in the secondary wastewater effluent and synthetic wastewaters through an RO membrane. Membrane fouling caused by the secondary wastewater effluent led to a notable decrease in the permeation of N-nitrosodimethylamine (NDMA) while a smaller but nevertheless …


Effects Of Aerodynamic Damping On The Tower Load Of Offshore Horizontal Axis Wind Turbines, Xiong Liu, Cheng Lu, Gangqiang Li, Ajit R. Godbole, Yan Chen Jan 2017

Effects Of Aerodynamic Damping On The Tower Load Of Offshore Horizontal Axis Wind Turbines, Xiong Liu, Cheng Lu, Gangqiang Li, Ajit R. Godbole, Yan Chen

Faculty of Engineering and Information Sciences - Papers: Part B

Aerodynamic damping has an important effect on the dynamic response of offshore Horizontal Axis Wind Turbines (HAWTs). In this paper, an analysis of the loads on offshore HAWTs is presented. The analysis combines the aerodynamics, hydrodynamics and structural dynamics of the structure, and includes the effects of aerodynamic damping. The aim is to better understand the role of aerodynamic damping during the interaction of wind and wave and the structure, and to quantitatively evaluate the effects of aerodynamic damping on the lifetime fatigue load on offshore HAWT towers. The aerodynamic loads are estimated using the Blade Element-Momentum (BEM) theory, including …


Persuasive Systems Design Features In Promoting Medication Management For Consumers, Khin Than Win, Judy Mullan, Sarah Katherine Howard, Harri Oinas-Kukkonen Jan 2017

Persuasive Systems Design Features In Promoting Medication Management For Consumers, Khin Than Win, Judy Mullan, Sarah Katherine Howard, Harri Oinas-Kukkonen

Faculty of Engineering and Information Sciences - Papers: Part B

Medication safety continues to be a growing concern in the healthcare industry. Providing medication information to consumers and supporting self- management would help to reduce medication errors and to increase medication adherence. This paper reviews the persuasive systems design features used in current medication management applications for consumers. A database search was conducted to identify relevant articles, which were then reviewed using the Persuasive Systems Design model as a framework for analysis. The results highlighted the applicability of these features for the medication management information systems available to consumers. Primary task support and Dialogue support categories were highly cited in …


A Mann-Whitney Type Effect Measure Of Interaction For Factorial Designs, Jan De Neve, Olivier Thas Jan 2017

A Mann-Whitney Type Effect Measure Of Interaction For Factorial Designs, Jan De Neve, Olivier Thas

Faculty of Engineering and Information Sciences - Papers: Part B

We propose a measure for interaction for factorial designs that is formulated in terms of a probability similar to the effect size of the Mann-Whitney test. It is shown how asymptotic confidence intervals can be obtained for the effect size and how a statistical test can be constructed. We further show how the test is related to the test proposed by Bhapkar and Gore [Sankhya A, 36:261-272 (1974)]. The results of a simulation study indicate that the test has good power properties and illustrate when the asymptotic approximations are adequate. The effect size is demonstrated on an example dataset.


A Highly Accelerated Parallel Multi-Gpu Based Reconstruction Algorithm For Generating Accurate Relative Stopping Powers, Paniz Karbasi, Ritchie Cai, Blake Schultze, Hanh Nguyen, Jones Reed, Patrick Hall, Valentina Giacometti, Vladimir Bashkirov, Robert P. Johnson, Nick Karonis, Jeffrey Olafsen, Caesar Ordonez, Keith Schubert, Reinhard W. Schulte Jan 2017

A Highly Accelerated Parallel Multi-Gpu Based Reconstruction Algorithm For Generating Accurate Relative Stopping Powers, Paniz Karbasi, Ritchie Cai, Blake Schultze, Hanh Nguyen, Jones Reed, Patrick Hall, Valentina Giacometti, Vladimir Bashkirov, Robert P. Johnson, Nick Karonis, Jeffrey Olafsen, Caesar Ordonez, Keith Schubert, Reinhard W. Schulte

Faculty of Engineering and Information Sciences - Papers: Part B

Low-dose Proton Computed Tomography (pCT) is an evolving imaging modality that is used in proton therapy planning which addresses the range uncertainty problem. The goal of pCT is generating a 3D map of relative stopping power measurements with high accuracy within clinically required time frames. Generating accurate relative stopping power values within the shortest amount of time is considered a key goal when developing an image reconstruction software. The existing image reconstruction softwares have successfully met this time frame and even exceeded this time goal, but require clusters with hundreds of processors. This paper describes a novel reconstruction technique using …


The State Of The Art Of Battery Charging Infrastructure For Electrical Vehicles: Topologies, Power Control Strategies, And Future Trend, Viet Thang Tran, Danny Sutanto, Kashem M. Muttaqi Jan 2017

The State Of The Art Of Battery Charging Infrastructure For Electrical Vehicles: Topologies, Power Control Strategies, And Future Trend, Viet Thang Tran, Danny Sutanto, Kashem M. Muttaqi

Faculty of Engineering and Information Sciences - Papers: Part B

Electric vehicle battery (EVB) charger topologies play a vital role to increase the penetration of EVs. This paper reviews the status quo of EV battery (EVB) chargers in term of converter topologies, operation modes, and power control strategies for EVs. EVB Chargers are classified based on their power levels and power flow direction. Referring to power ratings, EV chargers can be divided into Level 1, Level 2 and Level 3. Level 1 and Level 2 are normally compatible with on-board chargers while Level 3 is used for an off-board charger. Unidirectional/bidirectional power flow can be obtained at all power levels. …


Evidencing Extrinsic Stacking Faults In Twinning-Induced Plasticity Steel, Gilberto Casillas, Azdiar A. Gazder, Elena V. Pereloma, Ahmed A. Saleh Jan 2017

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 Jan 2017

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 Jan 2017

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 Jan 2017

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 Jan 2017

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 Jan 2017

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 Jan 2017

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 Jan 2017

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 Jan 2017

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 Jan 2017

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 Jan 2017

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 Jan 2017

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 Jan 2017

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 Jan 2017

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 Jan 2017

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 Jan 2017

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 Jan 2017

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 Jan 2017

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 …