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Articles 91 - 120 of 1689
Full-Text Articles in Physical Sciences and Mathematics
Reversible Structural Evolution Of Sodium-Rich Rhombohedral Prussian Blue For Sodium-Ion Batteries, Wanlin Wang, Yong Gang, Zhe Hu, Zichao Yan, Weijie Li, Yongcheng Li, Qinfen Gu, Zhixing Wang, Shulei Chou, Hua-Kun Liu, Shi Xue Dou
Reversible Structural Evolution Of Sodium-Rich Rhombohedral Prussian Blue For Sodium-Ion Batteries, Wanlin Wang, Yong Gang, Zhe Hu, Zichao Yan, Weijie Li, Yongcheng Li, Qinfen Gu, Zhixing Wang, Shulei Chou, Hua-Kun Liu, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
2020, The Author(s). Iron-based Prussian blue analogs are promising low-cost and easily prepared cathode materials for sodium-ion batteries. Their materials quality and electrochemical performance are heavily reliant on the precipitation process. Here we report a controllable precipitation method to synthesize high-performance Prussian blue for sodium-ion storage. Characterization of the nucleation and evolution processes of the highly crystalline Prussian blue microcubes reveals a rhombohedral structure that exhibits high initial Coulombic efficiency, excellent rate performance, and cycling properties. The phase transitions in the as-obtained material are investigated by synchrotron in situ powder X-ray diffraction, which shows highly reversible structural transformations between rhombohedral, …
Light Soaking Effect Driven In Porphyrin Dye-Sensitized Solar Cells Using 1d Tio2 Nanotube Photoanodes, Jung-Ho Yun, Attila J. Mozer, Pawel W. Wagner, David Offier, Rose Amal, Yun Hau Ng
Light Soaking Effect Driven In Porphyrin Dye-Sensitized Solar Cells Using 1d Tio2 Nanotube Photoanodes, Jung-Ho Yun, Attila J. Mozer, Pawel W. Wagner, David Offier, Rose Amal, Yun Hau Ng
Australian Institute for Innovative Materials - Papers
© 2020 Light soaking (LS) effect on porphyrin (GD2) dye-sensitized solar cells (DSSCs) using well-ordered TiO2 nanotube (TNT) photoanodes was studied with different lengths of TNTs and LS treatment time. The TNT array possessing longer length and larger tube diameter had improved photoelectrochemical (PEC) property by generating larger photocurrent, and besides provided a larger surface area to yield more dye loading. The LS effect on GD2-applied DSSCs using TNT photoanodes was triggered off in the first 5 min of the LS treatment, and gradually increased during 60 min LS treatment. The improved PEC property and dye loading by longer TNT …
Biobr Nanoflakes With Strong Kerr Nonlinearity Towards Hybrid Integrated Photonic Devices, Linnan Jia, Dandan Cui, Jiayang Wu, Haifeng Feng, Yunyi Yang, Tieshan Yang, Yang Qu, Yi Du, Weichang Hao, Baohua Jia, David Moss
Biobr Nanoflakes With Strong Kerr Nonlinearity Towards Hybrid Integrated Photonic Devices, Linnan Jia, Dandan Cui, Jiayang Wu, Haifeng Feng, Yunyi Yang, Tieshan Yang, Yang Qu, Yi Du, Weichang Hao, Baohua Jia, David Moss
Australian Institute for Innovative Materials - Papers
© 2020 SPIE. As a new group of advanced 2D layered materials, bismuth oxyhalides, i.e., BiOX (X = Cl, Br, I), have recently become of great interest. In this work, we characterize the third-order optical nonlinearities of BiOBr, an important member of the BiOX family. The nonlinear absorption and Kerr nonlinearity of BiOBr nanoflakes at both 800 nm and 1550 nm are characterized via the Z-Scan technique. Experimental results show that BiOBr nanoflakes exhibit a large nonlinear absorption coefficient β ∼ 10-7 m/W as well as a large Kerr coefficient n2 ∼ 10-14 m2/W. We also note that the n2 …
A Long Cycle-Life High-Voltage Spinel Lithium-Ion Battery Electrode Achieved By Site-Selective Doping, Gemeng Liang, Zhibin Wu, Christophe R. Didier, Wenchao Zhang, Jing Cuan, Baohua Li, Kuan-Yu Ko, Po Hung, Cheng Lu, Yuanzhen Chen, Grzegorz Leniec, Slawomir Kaczmarek, Bernt Johannessen, Lars Thomsen, Vanessa K. Peterson, Wei Kong Pang, Zaiping Guo
A Long Cycle-Life High-Voltage Spinel Lithium-Ion Battery Electrode Achieved By Site-Selective Doping, Gemeng Liang, Zhibin Wu, Christophe R. Didier, Wenchao Zhang, Jing Cuan, Baohua Li, Kuan-Yu Ko, Po Hung, Cheng Lu, Yuanzhen Chen, Grzegorz Leniec, Slawomir Kaczmarek, Bernt Johannessen, Lars Thomsen, Vanessa K. Peterson, Wei Kong Pang, Zaiping Guo
Australian Institute for Innovative Materials - Papers
© 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Spinel LiNi0.5Mn1.5O4 (LNMO) is a promising cathode candidate for the next-generation high energy-density lithium-ion batteries (LIBs). Unfortunately, the application of LNMO is hindered by its poor cycle stability. Now, site-selectively doped LNMO electrode is prepared with exceptional durability. In this work, Mg is selectively doped onto both tetrahedral (8a) and octahedral (16c) sites in the Fd (Formula presented.) m structure. This site-selective doping not only suppresses unfavorable two-phase reactions and stabilizes the LNMO structure against structural deformation, but also mitigates the dissolution of Mn during cycling. Mg-doped LNMOs exhibit extraordinarily stable …
Hierarchical Architectures Of Mesoporous Pd On Highly Ordered Tio2 Nanotube Arrays For Electrochemical Co2 Reduction, Jinshuo Zou, Muhammad Iqbal, Amruthalakshmi Vijayakumar, Caiyun Wang, Douglas R. Macfarlane, Yusuke Yamauchi, Chong Yong Lee, Gordon G. Wallace
Hierarchical Architectures Of Mesoporous Pd On Highly Ordered Tio2 Nanotube Arrays For Electrochemical Co2 Reduction, Jinshuo Zou, Muhammad Iqbal, Amruthalakshmi Vijayakumar, Caiyun Wang, Douglas R. Macfarlane, Yusuke Yamauchi, Chong Yong Lee, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
The understanding of the influence of hierarchically nanostructured architectures as support materials for catalysts loading, is critical towards development of efficient electrocatalytic interfaces. The knowledge on mass transport limitation of reactants within such catalyst-support structures remains elusive. Herein, we performed systematic investigation through a novel hierarchical 1D-3D structure by loading mesoporous Pd with an average pore size of ∼10 nm and wall thickness of ∼4 nm onto highly ordered TiO2 nanotube arrays via pulse electrodeposition. Electrochemical CO2 reductions achieved a CO2-to-formate faradaic conversion efficiency of 88 ± 2% under optimal conditions. Importantly, the product selectivity is found to depend significantly …
Development Of Ceo2 Nanodot Encrusted Tio2 Nanoparticles With Reduced Photocatalytic Activity And Increased Biocompatibility Towards A Human Keratinocyte Cell Line, Alexander Morlando, Marcela Chaki Borras, Yaser Rehman, Shahnaz Bakand, Philip J. Barker, Ronald Sluyter, Konstantin K. Konstantinov
Development Of Ceo2 Nanodot Encrusted Tio2 Nanoparticles With Reduced Photocatalytic Activity And Increased Biocompatibility Towards A Human Keratinocyte Cell Line, Alexander Morlando, Marcela Chaki Borras, Yaser Rehman, Shahnaz Bakand, Philip J. Barker, Ronald Sluyter, Konstantin K. Konstantinov
Australian Institute for Innovative Materials - Papers
The cytotoxic and genotoxic effects of titanium dioxide (TiO2) nanoparticles when exposed to ultraviolet (UV) radiation, particularly wavelengths between 320-400 nm, has raised concern over their safe use in health and cosmetic related products such as sunscreens. Cerium dioxide (CeO2) nanoparticles have been demonstrated to display biocompatible properties and antioxidant activity due to redox cycling of the Ce3+/Ce4+ oxidation states. In this work, CeO2/TiO2 nanocomposites were prepared through a standard precipitation method at atomic concentrations (at%) of Ce relative to Ti of 2.5, 5 and 10 at%, with the aim of reducing the photocatalytic activity of the core TiO2 nanoparticles …
Uncovering The Mechanism Of Dislocation Interaction With Nanoscale (<4 Nm) Interphase Precipitates In Microalloyed Ferritic Steels, Elena V. Pereloma, David L. Cortie, Navjeet Singh, Gilberto Casillas, Frank Niessen
Uncovering The Mechanism Of Dislocation Interaction With Nanoscale (<4 Nm) Interphase Precipitates In Microalloyed Ferritic Steels, Elena V. Pereloma, David L. Cortie, Navjeet Singh, Gilberto Casillas, Frank Niessen
Australian Institute for Innovative Materials - Papers
© 2020, © 2020 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. Nanoscale interphase precipitation in microalloyed ferritic steels provides a remarkable (200–400 MPa) strengthening increment, however its origin is unclear. Scanning transmission electron microscopy revealed step formation at the matrix/precipitate interface after both macroscopic uniaxial tension and nanopillar compression testing. Supported by Density Functional Theory modelling, dislocation shearing of nano-sized (<4 >nm) VC precipitates was identified as a strengthening mechanism. The findings suggest the operation of an unusual {001} slip–system in the VC nanoparticles. IMPACT STATEMENT: Shearing of VC nanoparticles by dislocations on a …
Impact Of Phase Structure On Piezoelectric Properties Of Textured Lead-Free Ceramics, Xiaoyi Gao, Nannan Dong, Fangquan Xia, Qinghua Guo, Hua Hao, Hanxing Liu, Shujun Zhang
Impact Of Phase Structure On Piezoelectric Properties Of Textured Lead-Free Ceramics, Xiaoyi Gao, Nannan Dong, Fangquan Xia, Qinghua Guo, Hua Hao, Hanxing Liu, Shujun Zhang
Australian Institute for Innovative Materials - Papers
© 2020 by the authors. Licensee MDPI, Basel, Switzerland. The impact of phase structure on piezoelectric performances of textured Na0.5Bi0.5TiO3 (NBT) based lead-free ceramics was studied, including 0.88NBT-0.08K0.5Bi0.5TiO3-0.04BaTiO3 (88NBT) with morphotropic phase boundary (MPB) composition and 0.90NBT-0.07K0.5Bi0.5TiO3-0.03BaTiO3 (90NBT) with rhombohedral phase. Both textured ceramics exhibit a high Lotgering factor, being on the order of f~96%. The piezoelectric coefficients of the textured 88NBT and 90NBT ceramics are increased by 20% and 60%, respectively, comparing to their randomly oriented ceramics. The piezoelectric enhancement of 90NBT textured ceramic is three times higher than 88NBT, revealing the phase structure plays a significant role in …
Graphitic Carbon Nitride With Thermally-Induced Nitrogen Defects: An Efficient Process To Enhance Photocatalytic H2production Performance, Guangzhi Dong, Yun Wen, Huiqing Fan, Chao Wang, Zhenxiang Cheng, Mingchang Zhang, Jiangwei Ma, Shujun Zhang
Graphitic Carbon Nitride With Thermally-Induced Nitrogen Defects: An Efficient Process To Enhance Photocatalytic H2production Performance, Guangzhi Dong, Yun Wen, Huiqing Fan, Chao Wang, Zhenxiang Cheng, Mingchang Zhang, Jiangwei Ma, Shujun Zhang
Australian Institute for Innovative Materials - Papers
Graphitic carbon nitride (g-C3N4, CN) with nitrogen vacancies was synthesized by a controlled thermal etching method in a semi-closed air-conditioning system. The defect-modified g-C3N4shows an excellent photocatalytic performance demonstrated by water splitting under visible light irradiation. With proper heat-treatment durations such as 2 h (CN2) and 4 h (CN4) at 550 °C, the hydrogen production rates significantly increase to 100 µmol h-1and 72 µmol h-1, which are 11 times and 8 times the rate of the pristine CN (8.8 µmol h-1) respectively. The excellent hydrogen production performance of nitrogen defect modified CN2 is due to the synergy effect of the …
Ultrahigh Electromechanical Coupling And Its Thermal Stability In (Na1/2bi1/2)Tio3-Based Lead-Free Single Crystals, Chao Chen, Li Yang, Xingan Jiang, Xiaokun Huang, Xiaoyi Gao, Na Tu, Kaizheng Shu, Xiangping Jiang, Shujun Zhang, Haosu Luo
Ultrahigh Electromechanical Coupling And Its Thermal Stability In (Na1/2bi1/2)Tio3-Based Lead-Free Single Crystals, Chao Chen, Li Yang, Xingan Jiang, Xiaokun Huang, Xiaoyi Gao, Na Tu, Kaizheng Shu, Xiangping Jiang, Shujun Zhang, Haosu Luo
Australian Institute for Innovative Materials - Papers
© 2020 by the authors. Licensee MDPI, Basel, Switzerland. In this work, we report the ultrahigh electromechanical coupling performance of NBT-6BT-KNN lead-free single crystal at room temperature. The thickness mode electromechanical coupling coefficient (kt) and the 31 mode electromechanical coupling coefficient (k31) reach 69.0% and 45.7%, respectively, which are superior to the PZT-5H lead-based ceramics of kt ~ 60% and k31~39%. In addition, the evolution of the crystal structure and domain morphology is revealed by Raman scattering spectra, a polarizing microscope and piezoelectric force microscopy characterization.
Synthesis And 3d Printing Of Conducting Alginate–Polypyrrole Ionomers, Cassandra Wright, Binbin Zhang, Johnson Chung, Jonathan Pannell, Melissa Kuester, Paul J. Molino, Timothy Hanks
Synthesis And 3d Printing Of Conducting Alginate–Polypyrrole Ionomers, Cassandra Wright, Binbin Zhang, Johnson Chung, Jonathan Pannell, Melissa Kuester, Paul J. Molino, Timothy Hanks
Australian Institute for Innovative Materials - Papers
© 2020 by the authors. Licensee MDPI, Basel, Switzerland. Hydrogels composed of calcium cross-linked alginate are under investigation as bioinks for tissue engineering scaffolds due to their variable viscoelasticity, biocompatibility, and erodibility. Here, pyrrole was oxidatively polymerized in the presence of sodium alginate solutions to form ionomeric composites of various compositions. The IR spectroscopy shows that mild base is required to prevent the oxidant from attacking the alginate during the polymerization reaction. The resulting composites were isolated as dried thin films or cross-linked hydrogels and aerogels. The products were characterized by elemental analysis to determine polypyrrole incorporation, electrical conductivity measurements, …
Correlations Between The Structure And Superconducting Properties Of Mt-Ybacuo, Tetiana Prikhna, V Moshchill, J Rabier, X Chaud, A Joulain, Alexey Pan, D Litskendorf, T Habisreuther
Correlations Between The Structure And Superconducting Properties Of Mt-Ybacuo, Tetiana Prikhna, V Moshchill, J Rabier, X Chaud, A Joulain, Alexey Pan, D Litskendorf, T Habisreuther
Australian Institute for Innovative Materials - Papers
© Published under licence by IOP Publishing Ltd. Comprehensive experimental results of fully oxidized (up to YBa2Cu3O6,9-7) melt-Textured YBaCuO materials with different microstructures are presented. These microstructures are built respectively: (1) with a high dislocations density but almost without twins (after high temperature treatment at 2 GPa) and (2) with a high twin density, but practically free from dislocations and stacking faults (after high temperature oxygenation at 10-16 MPa). It is shown that for attaining high critical current densities and fields of irreversibility (jc(H-c, 0 T)=9•104 A/cm2, H irr=9.7 T at 77 K), a high twin density in YBa2Cu3O6.9-7 matrix …
Optimum Electrical And Dielectric Performance Of Multi-Walled Carbon Nanotubes Doped Disposed Transformer Oil, Nur Suhaimi, Muhamad Din, Abdul Rahman, Mardhiah Hamid, Nur Amin, Wan Zamri, Jian Li Wang
Optimum Electrical And Dielectric Performance Of Multi-Walled Carbon Nanotubes Doped Disposed Transformer Oil, Nur Suhaimi, Muhamad Din, Abdul Rahman, Mardhiah Hamid, Nur Amin, Wan Zamri, Jian Li Wang
Australian Institute for Innovative Materials - Papers
© 2020 by the authors. This paper intends to prepare a nanofluid sample by suspending Multi-walled Carbon Nanotubes (MWCNTs) at 0.005g/L concentration and analyze the behavior of electrical and dielectric properties based on the International Electrotechnical Commision test method. In order to validate the effectiveness of MWCNT nanofluid, alternating current breakdown voltage (BDV), negative polarity lightning impulse (LI), dielectric permittivity, dissipation factor (DF), DC resistivity and Raman structural measurement are executed accordingly. In the following, an analysis of the statistical distribution using the two-parameterWeibull distribution law of BDV and LI are evaluated at four experimental conditions to predict the probability …
Position Control Of A 3d Printed Soft Finger With Integrated Soft Pneumatic Sensing Chambers, Charbel Tawk, Emre Sariyildiz, Hao Zhou, Marc In Het Panhuis, Geoffrey M. Spinks, Gursel Alici
Position Control Of A 3d Printed Soft Finger With Integrated Soft Pneumatic Sensing Chambers, Charbel Tawk, Emre Sariyildiz, Hao Zhou, Marc In Het Panhuis, Geoffrey M. Spinks, Gursel Alici
Australian Institute for Innovative Materials - Papers
© 2020 IEEE. Soft robots require robust soft and flexible sensors that can undergo large deformations repeatedly. This work reports on soft robotic fingers with embedded soft pneumatic sensing chambers that are directly 3D printed without requiring postprocessing. A low-cost and open-source fused deposition modeling (FDM) 3D printer that employs an off-the-shelf soft thermoplastic poly(urethane) (TPU) was used to fabricate the monolithic fingers and sensing chambers. These pneumatic sensing chambers have multiple advantages including very fast response to any change in their internal volume, linearity, negligible hysteresis, repeatability, reliability, stability over time, long lifetime and very low power consumption. The …
Supercritical Co2-Constructed Intralayer [Bi2o2]2+Structural Distortion For Enhanced Co2 Electroreduction, Yannan Zhou, Pengfei Yan, Jun Jia, Suoying Zhang, Xiaoli Zheng, Li Zhang, Bin Zhang, Jun Chen, Weichang Hao, Gongji Chen, Qun Xu, Buxing Han
Supercritical Co2-Constructed Intralayer [Bi2o2]2+Structural Distortion For Enhanced Co2 Electroreduction, Yannan Zhou, Pengfei Yan, Jun Jia, Suoying Zhang, Xiaoli Zheng, Li Zhang, Bin Zhang, Jun Chen, Weichang Hao, Gongji Chen, Qun Xu, Buxing Han
Australian Institute for Innovative Materials - Papers
© 2020 The Royal Society of Chemistry. Inducing crystal distortion in two-dimensional (2D) materials to increase the number of active sites is of great significance in improving the intrinsic activity of electrocatalysts for the CO2 reduction reaction (CO2RR). Developing 2D materials as thin as possible is required for this goal. Herein, taking layered BiOCl as a prototype model, we achieved the intralayer [Bi2O2]2+ structural distortion by using supercritical CO2 as a solvent to reduce the number of interlayer chlorine atoms involved in the reaction. Contrary to expectations, further CO2RR experiments indicate that thick nanoplates exhibit a high faradaic efficiency of …
Fully 3d Printed Soft Microactuators For Soft Microrobotics, Manav Tyagi, Geoffrey M. Spinks, Edwin W. Jager
Fully 3d Printed Soft Microactuators For Soft Microrobotics, Manav Tyagi, Geoffrey M. Spinks, Edwin W. Jager
Australian Institute for Innovative Materials - Papers
© 2020 IOP Publishing Ltd. The feasibility of additive manufacturing actuating microstructures and microdevices with small dimension is presented. Using a custom-built extrusion 3D printer and CAD model of the device structure, bilayer microactuators driven by hydrogels are fabricated down to a size of 300 × 1000 μm2, with a minimum thickness of 30 μm. To explore the limitations of the 3D printing process, microactuators with a width of 300 μm and lengths ranging from 1000 to 5000 μm are manufactured and thereafter operated to demonstrate the feasibility of the process. Similarly, microrobotic devices consisting of a passive rigid body …
Low-Cost Efficient Magnetic Adsorbent For Phosphorus Removal From Water, Liting Zhang, Hongbing Dan, Orphe Bukasa, Linlin Song, Yin Liu, Liang Wang, Jianjun Li
Low-Cost Efficient Magnetic Adsorbent For Phosphorus Removal From Water, Liting Zhang, Hongbing Dan, Orphe Bukasa, Linlin Song, Yin Liu, Liang Wang, Jianjun Li
Australian Institute for Innovative Materials - Papers
Adsorption using magnetic adsorbents makes the phosphorus removal from water simple and efficient. However, most of the reported magnetic adsorbents use chemically synthesized nanoparticles as magnetic cores, which are expensive and environmentally unfriendly. Replacing the nanomagnetic cores by cheap and green magnetic materials is essential for the wide application of this technique. In this paper, coal-fly-ash magnetic spheres (MSs) were processed to produce a cheap and eco-friendly magnetic core. A magnetic adsorbent, ZrO2 coated ball-milled MS (BMS@ZrO2), was prepared through a simple chemical precipitation method. Careful structural investigations indicate that a multipore structural amorphous ZrO2 layer has grown on the …
Creating Thin Magnetic Layers At The Surface Of Sb2te3 Topological Insulators Using A Low-Energy Chromium Ion Beam, David L. Cortie, Weiyao Zhao, Zengji Yue, Zhi Li, Abuduliken Bake, Olexandra Marenych, Zeljko Pastuovic, Mitchell John Bromley Nancarrow, Zhaoming Zhang, Dong-Chen Qi, Peter Evans, D Rg Mitchell, Xiaolin Wang
Creating Thin Magnetic Layers At The Surface Of Sb2te3 Topological Insulators Using A Low-Energy Chromium Ion Beam, David L. Cortie, Weiyao Zhao, Zengji Yue, Zhi Li, Abuduliken Bake, Olexandra Marenych, Zeljko Pastuovic, Mitchell John Bromley Nancarrow, Zhaoming Zhang, Dong-Chen Qi, Peter Evans, D Rg Mitchell, Xiaolin Wang
Australian Institute for Innovative Materials - Papers
The surfaces of Sb2Te3 topological insulator crystals were implanted using a 40 keV chromium ion beam. To facilitate uniform doping, the Sb2Te3 was passivated with a thin TiO2 film before the implantation step. The resulting chemical structure was studied using atomic-resolution transmission electron microscopy. A fluence of 7 × 1015 ions/cm2 at 40 keV lead to amorphization of the Sb2Te3 surface, with chromium predominantly incorporated in the amorphous layer. Heating to 200 °C caused the amorphous region to recrystallize and led to the formation of a thin chromium-rich …
Towards Agent-Based Traffic Simulation Using Live Data From Sensors For Smart Cities, Johan Barthelemy, Yan Qian, Pascal Perez
Towards Agent-Based Traffic Simulation Using Live Data From Sensors For Smart Cities, Johan Barthelemy, Yan Qian, Pascal Perez
SMART Infrastructure Facility - Papers
The Smart City and Internet-of-Things revolutions enable the collection of various types of data in real-time through sensors. This data can be used to improve the decision tools and simulations used by city planners. This paper presents a new framework for real-time traffic simulation integrating an agent-based methodology with live CCTV and other sensor data while respecting the privacy regulations. The framework simulates traffic flows of pedestrians, vehicles and bicycles and their interactions. The approach has been applied in Liverpool (NSW, Australia) showing promising preliminary results and can easily ingest additional sensor data, e.g. air quality.
Sharkeye: Real-Time Autonomous Personal Shark Alerting Via Aerial Surveillance, Robert A. Gorkin Iii, Kye Adams, Matthew J. Berryman, Sam Aubin, Wanqing Li, Andrew R. Davis, Johan Barthelemy
Sharkeye: Real-Time Autonomous Personal Shark Alerting Via Aerial Surveillance, Robert A. Gorkin Iii, Kye Adams, Matthew J. Berryman, Sam Aubin, Wanqing Li, Andrew R. Davis, Johan Barthelemy
SMART Infrastructure Facility - Papers
While aerial shark spotting has been a standard practice for beach safety for decades, new technologies offer enhanced opportunities, ranging from drones/unmanned aerial vehicles (UAVs) that provide new viewing capabilities, to new apps that provide beachgoers with up-to-date risk analysis before entering the water. This report describes the Sharkeye platform, a first-of-its-kind project to demonstrate personal shark alerting for beachgoers in the water and on land, leveraging innovative UAV image collection, cloud-hosted machine learning detection algorithms, and reporting via smart wearables. To execute, our team developed a novel detection algorithm trained via machine learning based on aerial footage of real …
Fabrication Of Aligned Biomimetic Gellan Gum-Chitosan Microstructures Through 3d Printed Microfluidic Channels And Multiple In Situ Cross-Linking Mechanisms, Thomas Robinson, Sepehr Talebian, Javad Foroughi, Zhilian Yue, Cormac Fay, Gordon G. Wallace
Fabrication Of Aligned Biomimetic Gellan Gum-Chitosan Microstructures Through 3d Printed Microfluidic Channels And Multiple In Situ Cross-Linking Mechanisms, Thomas Robinson, Sepehr Talebian, Javad Foroughi, Zhilian Yue, Cormac Fay, Gordon G. Wallace
SMART Infrastructure Facility - Papers
In this study we use a combination of ionic- and photo-cross-linking to develop a fabrication method for producing biocompatible microstructures using a methacrylated gellan gum (a polyanion) and chitosan (a polycation) in addition to lithium phenyl-2,4,6-trimethylbenzoylphosphinate (LAP) as the photoinitiator. This work involves the development of a low-cost, portable 3D bioprinter and a customized extrusion mechanism for controlled introduction of the materials through a 3D printed microfluidic nozzle, before being cross-linked in situ to form robust microstructure bundles. The formed microstructures yielded a diameter of less than 1 μm and a tensile strength range of ∼1 MPa. This study is …
Leasing Or Repositioning Empty Containers? Determining The Time-Varying Guide Leasing Prices For Decision Making, Hao Hu, Bo Du, Marcella Bernardo
Leasing Or Repositioning Empty Containers? Determining The Time-Varying Guide Leasing Prices For Decision Making, Hao Hu, Bo Du, Marcella Bernardo
SMART Infrastructure Facility - Papers
Repositioning empty container and leasing container from leasing company are mainly the outcomes of imbalance in trade flows. How to make decision on repositioning or leasing remains a challenge in running shipping service efficiently and economically. To address such challenge, this study aims to derive guide leasing prices. If the realistic leasing price is lower than the guide price, shipping companies should consider leasing containers from leasing company; otherwise repositioning empty container is a more economical option. Both time-varying short-term and long-term guide leasing prices are determined in a shipping network with consideration of empty container devanning and laden container …
A Case Study Of Wifi Sniffing Performance Evaluation, Yan Li, Johan Barthelemy, Shuai Sun, Pascal Perez, Bill Moran
A Case Study Of Wifi Sniffing Performance Evaluation, Yan Li, Johan Barthelemy, Shuai Sun, Pascal Perez, Bill Moran
SMART Infrastructure Facility - Papers
Mobile devices regularly broadcast WiFi probe requests in order to discover available proximal WiFi access points for connection. A probe request, sent automatically in the active scanning mode, consisting of the MAC address of the device expresses an advertisement of its presence. A real-time wireless sniffing system is able to sense WiFi packets and analyse wireless traffic. This provides an opportunity to obtain insights into the interaction between the humans carrying the mobile devices and the environment. Susceptibility to loss of the wireless data transmission is an important limitation on this idea, and this is complicated by the lack of …
A Game-Based Approach To Exploring Gender Differences In Smallholder Decisions To Change Farming Practices: White Rice Production In Laos, Silva Larson, Anne Giger-Dray, Tina Cornioley, Manithaythip Thephavanh, Phomma Thammavong, Sisavan Vorlasan, John Connell, Magnus Moglia, Peter Case, Kim Alexander, Pascal Perez
A Game-Based Approach To Exploring Gender Differences In Smallholder Decisions To Change Farming Practices: White Rice Production In Laos, Silva Larson, Anne Giger-Dray, Tina Cornioley, Manithaythip Thephavanh, Phomma Thammavong, Sisavan Vorlasan, John Connell, Magnus Moglia, Peter Case, Kim Alexander, Pascal Perez
SMART Infrastructure Facility - Papers
© 2020 by the authors. What influences farmers' decisions to adopt agricultural technologies is an important question for international agricultural research projects. There are often interpersonal differences between women and men that influence the adoption of decisions and behaviours, but few studies in the literature focus on these factors. We describe a game-based approach to explore decision-making processes underpinning the adoption of new farming technologies and practices in Lao People's Democratic Republic. Sowing a different rice variety is the tailored technology. The game explored adoption behaviours influencing decisions on transitioning from growing glutinous rice, a traditional variety preferred for consumption, …
Indoor Navigation And Mapping: Performance Analysis Of Uwb-Based Platform Positioning, A Masiero, Harris Perakis, Jelena Gabela, Charles Toth, Vassilis Gikas, Guenther Retscher, Salil Goel, Allison Kealy, Z Koppányi, W Blaszczak-Bak, Yan Li, Dorota Grejner-Brzezinska
Indoor Navigation And Mapping: Performance Analysis Of Uwb-Based Platform Positioning, A Masiero, Harris Perakis, Jelena Gabela, Charles Toth, Vassilis Gikas, Guenther Retscher, Salil Goel, Allison Kealy, Z Koppányi, W Blaszczak-Bak, Yan Li, Dorota Grejner-Brzezinska
SMART Infrastructure Facility - Papers
© 2020 International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives. The increasing demand for reliable indoor navigation systems is leading the research community to investigate various approaches to obtain effective solutions usable with mobile devices. Among the recently proposed strategies, Ultra-Wide Band (UWB) positioning systems are worth to be mentioned because of their good performance in a wide range of operating conditions. However, such performance can be significantly degraded by large UWB range errors; mostly, due to non-line-of-sight (NLOS) measurements. This paper considers the integration of UWB with vision to support navigation and mapping …
Virtual Reality May Be The Next Frontier In Remote Mental Health Care, Shiva Pedram
Virtual Reality May Be The Next Frontier In Remote Mental Health Care, Shiva Pedram
SMART Infrastructure Facility - Papers
In recent years, experts have focused on finding better ways to improve remotely delivered mental health care. Now, virtual reality (VR) may pave the way for myriad new opportunities.
The War On Abandoned Trolleys Can Be Won. Here's How, Johan Barthelemy
The War On Abandoned Trolleys Can Be Won. Here's How, Johan Barthelemy
SMART Infrastructure Facility - Papers
As more commercial precincts develop, we see more shopping trolleys abandoned far away from the shops they belong to. Programs are in place to tackle this issue but haven't solved the problem. We need a more sophisticated multi-pronged approach, including smart use of technology, to limit the number of abandoned trolleys and their impact.
Traffic Exhaust To Wildfires: Pm2.5 Measurements With Fixed And Portable, Low-Cost Lorawan-Connected Sensors, Hugh I. Forehead, Johan Barthelemy, Bilal Arshad, Nicolas R. Verstaevel, Owen F. Price, Pascal Perez
Traffic Exhaust To Wildfires: Pm2.5 Measurements With Fixed And Portable, Low-Cost Lorawan-Connected Sensors, Hugh I. Forehead, Johan Barthelemy, Bilal Arshad, Nicolas R. Verstaevel, Owen F. Price, Pascal Perez
SMART Infrastructure Facility - Papers
© 2020 Forehead et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Air pollution with PM2.5 (particulate matter smaller than 2.5 micro-metres in diameter) is a major health hazard in many cities worldwide, but since measuring instruments have traditionally been expensive, monitoring sites are rare and generally show only background concentrations. With the advent of low-cost, wirelessly connected sensors, air quality measurements are increasingly being made in places where many people spend time …
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 …