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Articles 1 - 30 of 644
Full-Text Articles in Engineering
Improved Performance Of Ballasted Tracks Under Impact Loading By Recycled Rubber Mats, Ngoc Trung Ngo, Buddhima Indraratna, Cholachat Rujikiatkamjorn
Improved Performance Of Ballasted Tracks Under Impact Loading By Recycled Rubber Mats, Ngoc Trung Ngo, Buddhima Indraratna, Cholachat Rujikiatkamjorn
Faculty of Engineering and Information Sciences - Papers: Part B
Ballasted tracks at transition locations such as approaches to bridges and road crossings experience increasing degradation and deformation due to dynamic and high impact forces, a key factor that decreases the stability and longevity of railroads. One solution to minimise ballast degradation at the transition zones is using rubber energy absorbing drainage sheets (READS) manufactured from recycled tyres. When placed beneath the ballast layer, READS distributes the load over wider area and attenuate of the load over a longer duration thus decreasing maximum stress, apart from reducing the energy transferred to the ballast and other substructure components. Subsequently, the track …
Assessment Of Radio-Induced Damage In Endothelial Cells Irradiated With 40 Kvp, 220 Kvp, And 4 Mv X-Rays By Means Of Micro And Nanodosimetric Calculations, Nicolas Tang, Marta Bueno, Sylvain Meylan, Yann Perrot, Hoang Tran, Amelie Freneau, Morgane Dos Santos, Aurelie Vaurijoux, Gaetan Gruel, Mario Bernal, Marie Bordage, Dimitris Emfietzoglou, Ziad Francis, Susanna Guatelli, Vladimir Ivanchenko, Mathieu Karamitros, Ioanna Kyriakou, Wook Shin, Sebastien Incerti, Carmen Villagrasa
Assessment Of Radio-Induced Damage In Endothelial Cells Irradiated With 40 Kvp, 220 Kvp, And 4 Mv X-Rays By Means Of Micro And Nanodosimetric Calculations, Nicolas Tang, Marta Bueno, Sylvain Meylan, Yann Perrot, Hoang Tran, Amelie Freneau, Morgane Dos Santos, Aurelie Vaurijoux, Gaetan Gruel, Mario Bernal, Marie Bordage, Dimitris Emfietzoglou, Ziad Francis, Susanna Guatelli, Vladimir Ivanchenko, Mathieu Karamitros, Ioanna Kyriakou, Wook Shin, Sebastien Incerti, Carmen Villagrasa
Faculty of Engineering and Information Sciences - Papers: Part B
2019 by the authors. Licensee MDPI, Basel, Switzerland. The objective of this work was to study the differences in terms of early biological effects that might exist between different X-rays energies by using a mechanistic approach. To this end, radiobiological experiments exposing cell monolayers to three X-ray energies were performed in order to assess the yields of early DNA damage, in particular of double-strand breaks (DSBs). The simulation of these irradiations was set in order to understand the differences in the obtained experimental results. Hence, simulated results in terms of microdosimetric spectra and early DSB induction were analyzed and compared …
An In-Situ Synchrotron Study Of The B2→B19′ Phase Transformation In A Ni-Ti Alloy Subjected To Uniaxial Monotonic Tension, Xiaohui Bian, Ahmed A. Saleh, Peter Lynch, Christopher H. J Davies, Elena V. Pereloma, Azdiar Adil Gazder
An In-Situ Synchrotron Study Of The B2→B19′ Phase Transformation In A Ni-Ti Alloy Subjected To Uniaxial Monotonic Tension, Xiaohui Bian, Ahmed A. Saleh, Peter Lynch, Christopher H. J Davies, Elena V. Pereloma, Azdiar Adil Gazder
Faculty of Engineering and Information Sciences - Papers: Part B
A cold-drawn and annealed 56Ni-44Ti wt% alloy was subjected to in-situ uniaxial monotonic tension in a synchrotron. Spatially resolved diffraction data was acquired along the gauge length by pausing the loading at five select macroscopic strains within the stress plateau region. This enables tracking localised transformation phenomena by sub-dividing the gauge length into transformation band, untransformed and apparently transformed regions. Within the macroscopic stress plateau region: (i) the highly strained B2 phase within the propagating transformation band and apparently transformed regions produces a relaxation of the B2 phase within the untransformed region. (ii) The newly formed B19′ grain families exhibit …
Implementation Of An Iot Based Radar Sensor Network For Wastewater Management, Adam Drenoyanis, Raad Raad, Ivan Wady, Carmel Krogh
Implementation Of An Iot Based Radar Sensor Network For Wastewater Management, Adam Drenoyanis, Raad Raad, Ivan Wady, Carmel Krogh
Faculty of Engineering and Information Sciences - Papers: Part B
Critical wastewater events such as sewer main blockages or overflows are often not detected until after the fact. These events can be costly, from both an environmental impact and monetary standpoint. A standalone, portable radar device allowing non-invasive benchmarking of sewer pumping station (SPS) pumps is presented. Further, by configuring and deploying a complete Low Power Wide Area Network (LPWAN), Shoalhaven Water (SW) now has the opportunity to create "Internet of Things" (IoT)-capable devices that offer freedom from the reliance on mobile network providers, whilst avoiding congestion on the existing Supervisory Control and Data Acquisition (SCADA) telemetry backbone. This network …
Simulation Of Cosmic Radiation Spectra For Personal Microdosimetry At The International Space Station's Altitude, Stefania Peracchi, Susanna Guatelli, Linh T. Tran, Anatoly B. Rosenfeld
Simulation Of Cosmic Radiation Spectra For Personal Microdosimetry At The International Space Station's Altitude, Stefania Peracchi, Susanna Guatelli, Linh T. Tran, Anatoly B. Rosenfeld
Faculty of Engineering and Information Sciences - Papers: Part B
Latest researches predict the cosmic rays exposure during long space missions outside the Earth's geomagnetic sphere, as to the Moon and Mars, can double the cancer risk. The minimization of risk associated with radiation exposure in the Low Earth Orbit (LEO) is of great interest for astronauts of the International Space Station (ISS). This risk is due to radiation hazard and can be predicted by measurement of the dose equivalent produced by the radiation environment inside of the spacecraft. Since more than 15 years ago, the Centre For Medical Radiation Physics (CMRP), University of Wollongong, is developing silicon based microdosimeters …
Fibre Optic Dosimetry In Synchrotron Microbeam Radiation Therapy, James Archer, Enbang Li, Anatoly B. Rosenfeld, Michael L. F Lerch
Fibre Optic Dosimetry In Synchrotron Microbeam Radiation Therapy, James Archer, Enbang Li, Anatoly B. Rosenfeld, Michael L. F Lerch
Faculty of Engineering and Information Sciences - Papers: Part B
Synchrotron microbeam radiation therapy is a novel pre-clinical therapy method that uses high brilliance, spatially fractionated, low energy x-rays to deliver a very high dose rate. A conventional spatial fractionation for these beams is 50 μm microbeam width at 400 μm peak-to-peak separation. To perform dosimetry on these beams, a dosimeter with a high spatial resolution is required. We present a plastic scintillator fibre optic dosimeter that has been demonstrated to be able to resolve the microbeam structure. The advantages of such a dosimeter is the water equivalence, passive components exposed to the radiation field, relatively inexpensive components and simple …
Evaluation Of Organ Doses Following High Dose Rate (Hdr) Brachytherapy Of Breast Cancer: A Geant4 Monte Carlo Simulation Study, M Aidil, Nurul Hashikin, Chai-Hong Yeong, Susanna Guatelli, K H. Ng, Alessandra Malaroda, Anatoly B. Rosenfeld, Alan C. Perkins
Evaluation Of Organ Doses Following High Dose Rate (Hdr) Brachytherapy Of Breast Cancer: A Geant4 Monte Carlo Simulation Study, M Aidil, Nurul Hashikin, Chai-Hong Yeong, Susanna Guatelli, K H. Ng, Alessandra Malaroda, Anatoly B. Rosenfeld, Alan C. Perkins
Faculty of Engineering and Information Sciences - Papers: Part B
This study aimed to evaluate the absorbed doses received by the organs at risk (OARs) following Iridium-192 (192Ir) high dose rate (HDR) brachytherapy of the left breast. The MIRD5 adult female anthropomorphic phantom, readily available in the Geant4 Monte Carlo package was used. However, the left breast was modified from 195 to 145 cm3, to represent a breast following lumpectomy. Left breast was chosen due to its higher cancer occurrence than the right breast. The HDR sources were constructed with an outer cylindrical dimension of 4.5 mm (length) x 0.9 mm (diameter). Various influencing parameters were studied, i.e. catheter arrangement …
Behaviour Of Foam Concrete Under Impact Loading Based On Shpb Experiments, Yongliang He, Mingshi Gao, Hongchao Zhao, Yichao Zhao
Behaviour Of Foam Concrete Under Impact Loading Based On Shpb Experiments, Yongliang He, Mingshi Gao, Hongchao Zhao, Yichao Zhao
Faculty of Engineering and Information Sciences - Papers: Part B
This paper presents an innovative method for using foam concrete as a typical building material for soft structures in underground coal mines subjected to dynamic loading. To understand the behaviour of foam concrete under impact loading, a total of 30 specimens with a diameter of 50 mm and a height of 50 mm were experimentally tested using a 75 mm diameter split Hopkinson pressure bar (SHPB) device. The key parameters investigated in the present study included the type of foam concrete (fly ash and sand), the density of foam concrete (1000, 1200 and 1400 kg/m3), and the impact velocity (3.0, …
A New Generation Of Magnetorheological Vehicle Suspension System With Tunable Stiffness And Damping Characteristics, Shuaishuai Sun, Xin Tang, Jian Yang, Donghong Ning, Haiping Du, Shiwu Zhang, Weihua Li
A New Generation Of Magnetorheological Vehicle Suspension System With Tunable Stiffness And Damping Characteristics, Shuaishuai Sun, Xin Tang, Jian Yang, Donghong Ning, Haiping Du, Shiwu Zhang, Weihua Li
Faculty of Engineering and Information Sciences - Papers: Part B
As the concept of variable stiffness (VS) and variable damping (VD) has increasingly drawn attention because of its superiority on reducing unwanted vibrations, dampers with property of varying stiffness and damping have been an attractive method to further improve vehicle performance and driver comfort. This paper presents the design, prototyping, modeling, and experimental evaluation of a VS and VD magnetorheological (MR) vehicle suspension system. It was first characterized by an INSTRON machine. Then, a phenomenological model was proposed to capture the characteristics of the damper and TS fuzzy approach was used to model the quarter car system where the proposed …
Leveraging Smote In A Two-Layer Model For Prediction Of Protein-Protein Interactions, Huaming Chen, Lei Wang, Chi-Hung Chi, Jun Shen
Leveraging Smote In A Two-Layer Model For Prediction Of Protein-Protein Interactions, Huaming Chen, Lei Wang, Chi-Hung Chi, Jun Shen
Faculty of Engineering and Information Sciences - Papers: Part B
The research of the mechanisms of infectious diseases between host and pathogens remains a hot topic. It takes stock of the interactions data between host and pathogens, including proteins and genomes, to facilitate the discoveries and prediction of underlying mechanisms. However, the incomplete protein-protein interactions data impediment the advances in this exploration and solicit the wet-lab experiments to examine and verify the latent interactions. Although there have been numerous studies trying to leverage the computational models, especially machine learning models, the performances of these models were not good enough to produce high-fidelity candidates of interactions data due to the nature …
Calcined Chicken Eggshell Electrode For Battery And Supercapacitor Applications, Manickam Minakshi, Stephen Higley, Christian Baur, David R. G Mitchell, Robert Jones, Maximilian Fichtner
Calcined Chicken Eggshell Electrode For Battery And Supercapacitor Applications, Manickam Minakshi, Stephen Higley, Christian Baur, David R. G Mitchell, Robert Jones, Maximilian Fichtner
Australian Institute for Innovative Materials - Papers
Biowaste eggshell can be used as a cathode while in its calcined form and it is found to be suitable as an anode in an electrochemical cell. This not only enables energy to be stored reversibly but also achieves waste management and sustainability goals by redirecting material away from landfill. Biowaste eggshell comprises 94% calcium carbonate (CaCO3; calcite), an attractive divalent ion source as a viable option for energy storage. X-ray diffraction and electron microscopy coupled with energy dispersive analyses of the calcined (thermally decomposed) biowaste eggshell show that CaO has been formed and the reaction is topotactic. Field emission …
Tunable Conducting Polymers: Toward Sustainable And Versatile Batteries, Xiaoteng Jia, Yu Ge, Liang Shao, Caiyun Wang, Gordon G. Wallace
Tunable Conducting Polymers: Toward Sustainable And Versatile Batteries, Xiaoteng Jia, Yu Ge, Liang Shao, Caiyun Wang, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Rapid growth of smart electronics and implantable medical devices markets has driven the development of next-generation sustainable, flexible, or implantable batteries. Conducting polymers with unique mechanical and electronic properties offer new possibilities and have attracted great attention. In this review, we discuss approaches used to tune conducting polymers at the molecular level for designated properties and applications such as improved electrochemical performance, and we discuss approaches used to tune conducting polymers at the molecular level to enhance selected properties for applications such as lithium/sodium ion batteries, biodegradable electrodes or enhanced solution processability for advanced manufacture of such structures. We provide …
Computer-Aided Manufacturing And Focused Ion Beam Technology Enable Machining Of Complex Micro- And Nano-Structures, Frank Niessen, Mitchell John Bromley Nancarrow
Computer-Aided Manufacturing And Focused Ion Beam Technology Enable Machining Of Complex Micro- And Nano-Structures, Frank Niessen, Mitchell John Bromley Nancarrow
Australian Institute for Innovative Materials - Papers
We present a novel framework for the fabrication of geometrically complex structures at the micro- and nano-scale which relies on the synergy of integrated computer-aided design and manufacturing systems (CAD/CAM) and focused ion beam (FIB) technology in a scanning electron microscope. Here we utilise industry standard G-code syntax, for the first time, to FIB machining by designing geometries with CAD, defining machining strategies and exporting G-codes with CAM and generating a coordinate list-based beam path by using a custom-built interpreter program. This allows the fabrication of complex structures from CAD models using syntax which is readily understood in the general …
Zn-Doped Cu(100) Facet With Efficient Catalytic Ability For The Co2 Electroreduction To Ethylene, Yuefeng Zhang, Yong Zhao, Caiyun Wang, Zengxi Wei, Junliang Yang, Jianmin Ma
Zn-Doped Cu(100) Facet With Efficient Catalytic Ability For The Co2 Electroreduction To Ethylene, Yuefeng Zhang, Yong Zhao, Caiyun Wang, Zengxi Wei, Junliang Yang, Jianmin Ma
Australian Institute for Innovative Materials - Papers
Electrochemically converting CO2 into fuels and chemicals is an appealing strategy to create energy rich products. The highly demanded product ethylene has been preferably produced on Cu-based catalysts with abundant exposed Cu(100) facets. However, the performance is still limited by the large energy barrier for the C-C dimerization. Here, to lower the energy barrier, we tailor the electronic structure of Cu(100) by doping a series of transition metals using the density functional theory (DFT) method. The zinc-doped Cu(100) surface has shown a superior catalytic performance. Mechanistic study further reveals that doping with Zn alters the electronic structure around Cu, adjusts …
Niobium-Titanium (Nb-Ti) Superconducting Joints For Persistent-Mode Operation, Dipakkumar Patel, Su Hun Kim, Wenbin Qiu, Minoru Maeda, Akiyoshi Matsumoto, Gen Nishijima, Hiroaki Kumakura, Seyong Choi, Jung Ho Kim
Niobium-Titanium (Nb-Ti) Superconducting Joints For Persistent-Mode Operation, Dipakkumar Patel, Su Hun Kim, Wenbin Qiu, Minoru Maeda, Akiyoshi Matsumoto, Gen Nishijima, Hiroaki Kumakura, Seyong Choi, Jung Ho Kim
Australian Institute for Innovative Materials - Papers
Superconducting joints are essential for persistent-mode operation in a superconducting magnet system to produce an ultra-stable magnetic field. Herein, we report rationally designed niobium-titanium (Nb-Ti) superconducting joints and their evaluation results in detail. For practical applications, superconducting joints were fabricated by using a solder matrix replacement method with two types of lead-bismuth (Pb-Bi) solder, including Pb42Bi58 as a new composition. All the joints attained a critical current of >200 A below 1.43 T at 4.2 K. Our optimized superconducting joining method was tested in a closed-loop coil, obtaining a total circuit resistance of 3.25 x 10-14 Ω at 4.2 K …
Recent Advances In Isolated Single-Atom Catalysts For Zinc Air Batteries: A Focus Review, Weimin Zhang, Yuqing Liu, Lipeng Zhang, Jun Chen
Recent Advances In Isolated Single-Atom Catalysts For Zinc Air Batteries: A Focus Review, Weimin Zhang, Yuqing Liu, Lipeng Zhang, Jun Chen
Australian Institute for Innovative Materials - Papers
Recently, zinc-air batteries (ZABs) have been receiving attention due to their theoretically high energy density, excellent safety, and the abundance of zinc resources. Typically, the performance of the zinc air batteries is determined by two catalytic reactions on the cathode-the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER). Therefore, intensive effort has been devoted to explore high performance electrocatalysts with desired morphology, size, and composition. Among them, single-atom catalysts (SACs) have emerged as attractive and unique systems because of their high electrocatalytic activity, good durability, and 100% active atom utilization. In this review, we mainly focus on the …
Facile Development Of A Fiber-Based Electrode For Highly Selective And Sensitive Detection Of Dopamine, Syamak Farajikhah, Peter C. Innis, Brett Paull, Gordon G. Wallace, Alexander R. Harris
Facile Development Of A Fiber-Based Electrode For Highly Selective And Sensitive Detection Of Dopamine, Syamak Farajikhah, Peter C. Innis, Brett Paull, Gordon G. Wallace, Alexander R. Harris
Australian Institute for Innovative Materials - Papers
A facile one-step method was used to create a selective and sensitive electrode for dopamine (DA) detection based upon a stainless steel (SS) filament substrate and reduced graphene oxide (rGO). The electrode successfully and selectively detects DA in the presence of uric acid and ascorbic acid without the need of a Nafion coating. The proposed electrode is easy to fabricate, low-cost, flexible and strong. The rGO-SS electrode could also be incorporated into a 3-dimensional braided structure enabling DA detection in a two-electrode fibre system. The sensor is an excellent candidate for production of affordable, robust and flexible wearable and portable …
Nickel Sulfide Nanocrystals On Nitrogen-Doped Porous Carbon Nanotubes With High-Efficiency Electrocatalysis For Room-Temperature Sodium-Sulfur Batteries, Zichao Yan, Jin Xiao, Weihong Lai, Li Wang, Florian Arno Gebert, Yunxiao Wang, Qinfen Gu, Hui Liu, Shulei Chou, Hua-Kun Liu, Shi Xue Dou
Nickel Sulfide Nanocrystals On Nitrogen-Doped Porous Carbon Nanotubes With High-Efficiency Electrocatalysis For Room-Temperature Sodium-Sulfur Batteries, Zichao Yan, Jin Xiao, Weihong Lai, Li Wang, Florian Arno Gebert, Yunxiao Wang, Qinfen Gu, Hui Liu, Shulei Chou, Hua-Kun Liu, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
Polysulfide dissolution and slow electrochemical kinetics of conversion reactions lead to low utilization of sulfur cathodes that inhibits further development of room-temperature sodium-sulfur batteries. Here we report a multifunctional sulfur host, NiS2 nanocrystals implanted in nitrogen-doped porous carbon nanotubes, which is rationally designed to achieve high polysulfide immobilization and conversion. Attributable to the synergetic effect of physical confinement and chemical bonding, the high electronic conductivity of the matrix, closed porous structure, and polarized additives of the multifunctional sulfur host effectively immobilize polysulfides. Significantly, the electrocatalytic behaviors of the Lewis base matrix and the NiS2 component are clearly evidenced by operando …
Fluorescent Carbon- And Oxygen-Doped Hexagonal Boron Nitride Powders As Printing Ink For Anticounterfeit Applications, Feng Liu, Andrew Nattestad, Sina Naficy, Rui Han, Gilberto Cosillas, Alexander Angeloski, Xudong Sun, Zhenguo Huang
Fluorescent Carbon- And Oxygen-Doped Hexagonal Boron Nitride Powders As Printing Ink For Anticounterfeit Applications, Feng Liu, Andrew Nattestad, Sina Naficy, Rui Han, Gilberto Cosillas, Alexander Angeloski, Xudong Sun, Zhenguo Huang
Australian Institute for Innovative Materials - Papers
Increasing demands for optical anticounterfeiting technology require the development of versatile luminescent materials with tunable photoluminescence properties. Herein, a number of fluorescent carbon- and oxygen-doped hexagonal boron nitride (denoted as BCNO) phosphors are found to offer a such high-tech anticounterfeiting solution. These multicolor BCNO powders, developed in a two-step process with controlled annealing and oxidation, feature rod-like particle shape, with varied luminescence properties. Studies of the optical properties of BCNO, along with other characterization, provide insight into this underexplored material. Anticounterfeiting applications are demonstrated with printed patterns which are indistinguishable to the naked eye under visible light but become highly …
Designed Patterning Of Mesoporous Metal Films Based On Electrochemical Micelle Assembly Combined With Lithographical Techniques, Hyunsoo Lim, Jeonghun Kim, Kenya Kani, Mostafa Kamal Masud, Hyeongyu Park, Minjun Kim, Saad Alsheri, Tansir Ahamad, Norah Alhokbany, Jongbeom Na, Victor Malgras, Yoshio Bando, Yusuke Yamauchi
Designed Patterning Of Mesoporous Metal Films Based On Electrochemical Micelle Assembly Combined With Lithographical Techniques, Hyunsoo Lim, Jeonghun Kim, Kenya Kani, Mostafa Kamal Masud, Hyeongyu Park, Minjun Kim, Saad Alsheri, Tansir Ahamad, Norah Alhokbany, Jongbeom Na, Victor Malgras, Yoshio Bando, Yusuke Yamauchi
Australian Institute for Innovative Materials - Papers
Mesoporous noble metals and their patterning techniques for obtaining unique patterned structures are highly attractive for electrocatalysis, photocatalysis, and optoelectronics device applications owing to their expedient properties such as high level of exposed active locations, cascade electrocatalytic sites, and large surface area. However, patterning techniques for mesoporous substrates are still limited to metal oxide and silica films, although there is growing demand for developing techniques related to patterning mesoporous metals. In this study, the first demonstration of mesoporous metal films on patterned gold (Au) substrates, prefabricated using photolithographic techniques, is reported. First, different growth rates of mesoporous Au metal films …
Coupling Topological Insulator Snsb2te4 Nanodots With Highly Doped Graphene For High-Rate Energy Storage, Zhibin Wu, Gemeng Liang, Wei Kong Pang, Tengfei Zhou, Zhenxiang Cheng, Wenchao Zhang, Ye Liu, Bernt Johannessen, Zaiping Guo
Coupling Topological Insulator Snsb2te4 Nanodots With Highly Doped Graphene For High-Rate Energy Storage, Zhibin Wu, Gemeng Liang, Wei Kong Pang, Tengfei Zhou, Zhenxiang Cheng, Wenchao Zhang, Ye Liu, Bernt Johannessen, Zaiping Guo
Australian Institute for Innovative Materials - Papers
Topological insulators have spurred worldwide interest, but their advantageous properties have scarcely been explored in terms of electrochemical energy storage, and their high-rate capability and long-term cycling stability still remain a significant challenge to harvest. p-Type topological insulator SnSb2Te4 nanodots anchoring on few-layered graphene (SnSb2Te4/G) are synthesized as a stable anode for high-rate lithium-ion batteries and potassium-ion batteries through a ball-milling method. These SnSb2Te4/G composite electrodes show ultralong cycle lifespan (478 mAh g−1 at 1 A g−1 after 1000 cycles) and excellent rate capability (remaining 373 mAh g−1 even at 10 A g−1) in Li-ion storage owing to the rapid …
Polyaniline Electrochemically Deposited On Tailored Metal Mesh For Dynamically Stretchable Supercapacitors, Fangya Qi, Chen Zhao, Caiyun Wang, Xiaoteng Jia, Li Weng, Tingting He, Yonggang Min
Polyaniline Electrochemically Deposited On Tailored Metal Mesh For Dynamically Stretchable Supercapacitors, Fangya Qi, Chen Zhao, Caiyun Wang, Xiaoteng Jia, Li Weng, Tingting He, Yonggang Min
Australian Institute for Innovative Materials - Papers
© 2019 The Electrochemical Society. As power source for integrated wearable electronics, stretchable supercapacitors have gained significant attention. Here, an in-plane compression strategy is proposed to make highly stretchable current collectors from commercially available stainless steel mesh. Polyaniline is deposited on the compressed metal mesh to produce stretchable pseudo-capacitive electrode with 100% stretching deformation capability. An intrinsically stretchable supercapacitor is demonstrated using such electrodes and poly(vinyl alcohol)H3PO4 polymer gel electrolyte. The assembled supercapacitor shows an areal capacitance of 13.5 mF cm−2 at a current density of 0.1 mA cm−2. It can maintain 89% of its initial capacitance after 1000 stretching/releasing …
Hybrid Graphene/Conducting Polymer Strip Sensors For Sensitive And Selective Electrochemical Detection Of Serotonin, Wed Al-Graiti, Javad Foroughi, Yuqing Liu, Jun Chen
Hybrid Graphene/Conducting Polymer Strip Sensors For Sensitive And Selective Electrochemical Detection Of Serotonin, Wed Al-Graiti, Javad Foroughi, Yuqing Liu, Jun Chen
Australian Institute for Innovative Materials - Papers
© 2019 American Chemical Society. There is an urgent need for electrochemical sensor materials that exhibit electrochemically compliant properties while also retaining high durability under physiological conditions. Herein, we demonstrate a novel strip-style electrochemical sensor using reduced graphene oxide (rGO) and poly(ethylene dioxythiophene)/poly(styrene sulfonic acid) (PEDOT/PSS) nanocomposite films. The fabricated rGO-PEDOT/PSS sensor with and without nafion has shown an effective electrochemical response for both selectivity and sensitivity of the serotonin (5-hydroxytryptamine, 5-HT) neurotransmitter. The developed high-performance hybrid graphene/conducting polymer strip sensors are likely to find applications as chip electrochemical sensor devices for patients diagnosed with Alzheimer's disease.
A Flexible And Boron-Doped Carbon Nanotube Film For High-Performance Li Storage, Lei Wang, Wenlei Guo, Pengyi Lu, Tao Zhang, Feng Hou, Ji Liang
A Flexible And Boron-Doped Carbon Nanotube Film For High-Performance Li Storage, Lei Wang, Wenlei Guo, Pengyi Lu, Tao Zhang, Feng Hou, Ji Liang
Australian Institute for Innovative Materials - Papers
© Copyright © 2019 Wang, Guo, Lu, Zhang, Hou and Liang. Boron-doped carbon nanotubes are a promising candidate for Li storage due to the unique electronic structure and high crystallinity brought by the boron dopants. However, the relatively low Li storage capacity has limited its application in the electrochemical energy storage field, which is mainly caused by the predominantly intact graphitic structure on their surface with limited access points for Li ion entering. Herein, we report a novel B-doped CNTs (py-B-CNTs) film, in which the CNTs possess intrinsically rough surface but flat internal graphitic structure. When used as a flexible …
Natural Hazards And Social Vulnerability Of Place: The Strength-Based Approach Applied To Wollongong, Australia, Robert Ighodaro Ogie, Biswajeet Pradhan
Natural Hazards And Social Vulnerability Of Place: The Strength-Based Approach Applied To Wollongong, Australia, Robert Ighodaro Ogie, Biswajeet Pradhan
SMART Infrastructure Facility - Papers
Natural hazards pose significant threats to different communities and various places around the world. Failing to identify and support the most vulnerable communities is a recipe for disaster. Many studies have proposed social vulnerability indices for measuring both the sensitivity of a population to natural hazards and its ability to respond and recover from them. Existing techniques, however, have not accounted for the unique strengths that exist within different communities to help minimize disaster loss. This study proposes a more balanced approach referred to as the strength-based social vulnerability index (SSVI). The proposed SSVI technique, which is built on sound …
The Application Of Evolutionary Computation And Metaheuristics For Solving The Network Design Problems, Mehrdad Amirghasemi, Bo Du, Johan Barthelemy, Robert Ighodaro Ogie, Pascal Perez
The Application Of Evolutionary Computation And Metaheuristics For Solving The Network Design Problems, Mehrdad Amirghasemi, Bo Du, Johan Barthelemy, Robert Ighodaro Ogie, Pascal Perez
SMART Infrastructure Facility - Papers
Network Design Problems (NDPs) can model many real-life problems in a wide range of domains from transportation, supply chain management and logistics, through to the design of telecommunication networks and airline routes. NDPs are generally tackled through employing sophisticated exact methods and (meta-)heuristics. Exact methods mainly include mixed integer programming, column generation, and branch and bound techniques. Metaheuristics, as the second strategy of solving NDPs, can comprise any construction methods, local searches (point-based), evolutionary (population-based) techniques as well as their hybrids. In this abstract, we discuss the challenges and potentials of designing an effective hybrid metaheuristic for solving NDPs by …
Computer Vision And Iot-Based Sensors In Flood Monitoring And Mapping: A Systematic Review, Bilal Arshad, Robert Ighodaro Ogie, Johan Barthelemy, Biswajeet Pradhan, Nicolas R. Verstaevel, Pascal Perez
Computer Vision And Iot-Based Sensors In Flood Monitoring And Mapping: A Systematic Review, Bilal Arshad, Robert Ighodaro Ogie, Johan Barthelemy, Biswajeet Pradhan, Nicolas R. Verstaevel, Pascal Perez
SMART Infrastructure Facility - Papers
Floods are amongst the most common and devastating of all natural hazards. The alarming number of flood-related deaths and financial losses suffered annually across the world call for improved response to flood risks. Interestingly, the last decade has presented great opportunities with a series of scholarly activities exploring how camera images and wireless sensor data from Internet-of-Things (IoT) networks can improve flood management. This paper presents a systematic review of the literature regarding IoT-based sensors and computer vision applications in flood monitoring and mapping. The paper contributes by highlighting the main computer vision techniques and IoT sensor approaches utilised in …
High Pressure Synchrotron X-Ray Diffraction Study Of The Mn0.94ti0.06coge Alloy, Precious Shamba, J C. Debnath, Jian Li Wang, Qinfen Gu
High Pressure Synchrotron X-Ray Diffraction Study Of The Mn0.94ti0.06coge Alloy, Precious Shamba, J C. Debnath, Jian Li Wang, Qinfen Gu
Australian Institute for Innovative Materials - Papers
High pressure x-ray diffraction studies up to 10.4 GPa were performed on the Mn0.94Ti0.06CoGe alloy using synchrotron radiation with a diamond anvil cell. No structural phase transitions occurred in the entire range of our measurements. Unit cell parameters were determined up to 10.4 GPa and the calculated unit cell volumes were found to be well represented by a third order Birch-Murnaghan equation of state. The bulk modulus determined from the pressure - volume data was found to be, B0 = 231.72 ± 7.79 GPa. This study, employing high resolution synchrotron x-rays has helped clarify the behaviour of the Mn0.94Ti0.06CoGe alloy …
Engineering Additional Edge Sites On Molybdenum Dichalcogenides Toward Accelerated Alkaline Hydrogen Evolution Kinetics, Qian Zhou, Guoqiang Zhao, Kun Rui, Yaping Chen, Xun Xu, Shi Xue Dou, Wenping Sun
Engineering Additional Edge Sites On Molybdenum Dichalcogenides Toward Accelerated Alkaline Hydrogen Evolution Kinetics, Qian Zhou, Guoqiang Zhao, Kun Rui, Yaping Chen, Xun Xu, Shi Xue Dou, Wenping Sun
Australian Institute for Innovative Materials - Papers
The sluggish reaction kinetics of the hydrogen evolution reaction (HER) in alkaline media is a great obstacle to alkaline water electrolysis, and it remains a great challenge to develop precious metal-free efficient catalysts for the alkaline HER. Transition metal dichalcogenides (TMDs), in particular MoS2 and MoSe2, are promising catalysts for the HER in acidic media, but they exhibit much inferior catalytic activity for the alkaline HER owing to the slow water dissociation process. In this work, we, for the first time, demonstrate that TMD heterostructures with abundant edge sites deliver substantially accelerated alkaline HER kinetics, which is in great part …
Chemical Design Of Palladium-Based Nanoarchitectures For Catalytic Applications, Muhammad Iqbal, Yusuf Valentino Kaneti, Jeonghun Kim, Brian Yuliarto, Yong-Mook Kang, Yoshio Bando, Yoshiyuki Sugahara, Yusuke Yamauchi
Chemical Design Of Palladium-Based Nanoarchitectures For Catalytic Applications, Muhammad Iqbal, Yusuf Valentino Kaneti, Jeonghun Kim, Brian Yuliarto, Yong-Mook Kang, Yoshio Bando, Yoshiyuki Sugahara, Yusuke Yamauchi
Australian Institute for Innovative Materials - Papers
Palladium (Pd) plays an important role in numerous catalytic reactions, such as methanol and ethanol oxidation, oxygen reduction, hydrogenation, coupling reactions, and carbon monoxide oxidation. Creating Pd-based nanoarchitectures with increased active surface sites, higher density of low-coordinated atoms, and maximized surface coverage for the reactants is important. To address the limitations of pure Pd, various Pd-based nanoarchitectures, including alloys, intermetallics, and supported Pd nanomaterials, have been fabricated by combining Pd with other elements with similar or higher catalytic activity for many catalytic reactions. Herein, recent advances in the preparation of Pd-based nanoarchitectures through solution-phase chemical reduction and electrochemical deposition methods …