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Articles 31 - 60 of 117
Full-Text Articles in Engineering
Na-Doped Zno Uv Filters With Reduced Photocatalytic Activity For Sunscreen Applications, Rafid Abdlateef Mueen, Michael L. F Lerch, Zhenxiang Cheng, Konstantin K. Konstantinov
Na-Doped Zno Uv Filters With Reduced Photocatalytic Activity For Sunscreen Applications, Rafid Abdlateef Mueen, Michael L. F Lerch, Zhenxiang Cheng, Konstantin K. Konstantinov
Australian Institute for Innovative Materials - Papers
Due to its physical and chemical stability in addition to its transparency in the visible region with ultraviolet protective activity, ZnO can be used in sunscreen applications. In our article, Na-doped zinc oxide nanoparticles were prepared in different concentrations by sol–gel and solvothermal techniques to reduce their photocatalytic activity. The photocatalytic activity of the doped samples was suppressed effectively at a concentration of 0.03 at% Na doping up to 90% by conducting the sol–gel process rather than the solvothermal process which resulted in about 70% photocatalytic reduction in a period of time from (0–30 min) when exposed to ultraviolet and …
Collective Directional Locking Of Colloidal Monolayers On A Periodic Substrate, Ralph Stoop, Arthur Straube, Tom H. Johansen, Pietro Tierno
Collective Directional Locking Of Colloidal Monolayers On A Periodic Substrate, Ralph Stoop, Arthur Straube, Tom H. Johansen, Pietro Tierno
Australian Institute for Innovative Materials - Papers
We investigate the directional locking effects that arise when a monolayer of paramagnetic colloidal particles is driven across a triangular lattice of magnetic bubbles. We use an external rotating magnetic field to generate a two-dimensional traveling wave ratchet forcing the transport of particles along a direction that intersects two crystallographic axes of the lattice. We find that, while single particles show no preferred direction, collective effects induce transversal current and directional locking at high density via a spontaneous symmetry breaking. The colloidal current may be polarized via an additional bias field that makes one transport direction energetically preferred.
Preparation And Characterisation Of Metallorganic Precursors Derived Iron Oxides On Porous Silicon Layers, Sivakumar Balakrishnan, Yurii K. Gun'ko, Gerhard F. Swiegers, Tatiana S. Perova
Preparation And Characterisation Of Metallorganic Precursors Derived Iron Oxides On Porous Silicon Layers, Sivakumar Balakrishnan, Yurii K. Gun'ko, Gerhard F. Swiegers, Tatiana S. Perova
Australian Institute for Innovative Materials - Papers
Porous silicon has generated interest in scientific community after its photoluminescence discovery and thereafter, research was focused on to the chemical functionalization of silicon and subsequent anchoring of nanoparticles onto silicon surface. In the present work, the porous silicon has been effectively modified with magnetic nanoparticles which were prepared through metallorganic approach. The as-fabricated magnetic-porous silicon composites were characterised using FTIR and Raman spectroscopies, Scanning Electron Microscopy (SEM) as well as magnetic measurements.
Fe/Co-Based Bimetallic Mof-Derived Co3fe7@Ncntfs Bifunctional Electrocatalyst For High-Efficiency Overall Water Splitting, Qunyao Yuan, Youxing Yu, Peter C. Sherrell, Jun Chen, Xiaofang Bi
Fe/Co-Based Bimetallic Mof-Derived Co3fe7@Ncntfs Bifunctional Electrocatalyst For High-Efficiency Overall Water Splitting, Qunyao Yuan, Youxing Yu, Peter C. Sherrell, Jun Chen, Xiaofang Bi
Australian Institute for Innovative Materials - Papers
© 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Electrocatalytic water splitting to produce hydrogen and oxygen is regarded as one of the most promising methods to generate clean and sustainable energy for replacing fossil fuels. However, the design and development of an efficient bifunctional catalyst for simultaneous generation of hydrogen and oxygen remains extremely challenging yet is critical for the practical implementation of water electrolysis. Here, we report a facile method to fabricate novel N-doped carbon nanotube frameworks (NCNTFs) by the pyrolysis of a bimetallic metal organic framework (MIL-88-Fe/Co). The resultant electrocatalyst, Co3Fe7@NCNTFs, exhibits excellent oxygen evolution reaction (OER) …
Experimental Evaluation And Analytical Model Of The Pressure Generated By Elastic Compression Garments On A Deformable Human Limb Analogue, Christopher J. Richards, Julie R. Steele, Geoffrey M. Spinks
Experimental Evaluation And Analytical Model Of The Pressure Generated By Elastic Compression Garments On A Deformable Human Limb Analogue, Christopher J. Richards, Julie R. Steele, Geoffrey M. Spinks
Australian Institute for Innovative Materials - Papers
© 2020 Compression garments are extensively used for various therapeutic treatments and are expected to deliver accurate and reproducible compression pressures. This study focuses on developing an analytical model to predict the pressure generation by compression garments on human limb analogues. The analogues consisted of non-compressible and compressible cylinders that were chosen as the first step towards evaluating pressure generation on real human limbs. An experimental platform was developed to quantify the relationship between material properties, initial garment extension and pressure. A mathematical model was presented that provided greater accuracy in predicting the pressure generated by compression garments than the …
Magnetic Modulation Of Terahertz Waves Via Spin-Polarized Electron Tunneling Based On Magnetic Tunnel Junctions, Zuanming Jin, Jugeng Li, Wenjie Zhang, Chenyang Guo, Caihua Wan, Xiufeng Han, Zhenxiang Cheng, C Zhang, Alexey Balakin, Alexander Shkurinov, Yan Peng, Guohong Ma, Yiming Zhu, Jianquan Yao, Songlin Zhuang
Magnetic Modulation Of Terahertz Waves Via Spin-Polarized Electron Tunneling Based On Magnetic Tunnel Junctions, Zuanming Jin, Jugeng Li, Wenjie Zhang, Chenyang Guo, Caihua Wan, Xiufeng Han, Zhenxiang Cheng, C Zhang, Alexey Balakin, Alexander Shkurinov, Yan Peng, Guohong Ma, Yiming Zhu, Jianquan Yao, Songlin Zhuang
Australian Institute for Innovative Materials - Papers
© 2020 American Physical Society. Magnetic tunnel junctions (MTJs) are a key technology in modern spintronics because they are the basis of read-heads of modern hard disk drives, nonvolatile magnetic random access memories, and sensor applications. In this paper, we demonstrate that tunneling magnetoresistance can influence terahertz (THz) wave propagation through a MTJ. In particular, various magnetic configurations between parallel state and antiparallel state of the magnetizations of the ferromagnetic layers in the MTJ have the effect of changing the conductivity, making a functional modulation of the propagating THz electromagnetic fields. Operating in the THz frequency range, a maximal modulation …
Enhanced Potassium Ion Battery By Inducing Interlayer Anionic Ligands In Mos1.5se0.5 Nanosheets With Exploration Of The Mechanism, Haining Fan, Xingyong Wang, Haibo Yu, Qinfen Gu, Shan-Liang Chen, Zheng Liu, Xiao-Hua Chen, Wenbin Luo, Hua-Kun Liu
Enhanced Potassium Ion Battery By Inducing Interlayer Anionic Ligands In Mos1.5se0.5 Nanosheets With Exploration Of The Mechanism, Haining Fan, Xingyong Wang, Haibo Yu, Qinfen Gu, Shan-Liang Chen, Zheng Liu, Xiao-Hua Chen, Wenbin Luo, Hua-Kun Liu
Australian Institute for Innovative Materials - Papers
The strategy of inducing interlayer anionic ligands in 2D MoS1.5Se0.5 nanosheets is employed to consolidate the interlayer band gap and optimize the electronic structure for the potassium ion battery. It combines complementary advantages from two kinds of anionic ligands with high conductivity and good affinity with potassium ions. The potassium ion diffusion rate is accelerated as well by an optimized lower energy barrier for ion diffusion pathways, with the formation of highly reversible KMo3Se3 crystal other than K0.4MoS2/K2MoS4, which encounters a much slower electro/ion diffusion rate …
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 …
Porous Pnipam Hydrogels: Overcoming Diffusion-Governed Hydrogel Actuation, Holly Warren, David Shepherd, Marc In Het Panhuis, David L. Officer, Geoffrey M. Spinks
Porous Pnipam Hydrogels: Overcoming Diffusion-Governed Hydrogel Actuation, Holly Warren, David Shepherd, Marc In Het Panhuis, David L. Officer, Geoffrey M. Spinks
Australian Institute for Innovative Materials - Papers
© 2019 Elsevier B.V. A custom centrifugal melt-spinning technique was used to prepare randomly arranged 3D fibre networks from commercially available shellac flakes. These fibre networks were implanted into thermally actuating poly(N-isopropylacrylamide)-alginate hydrogels and then removed chemically to yield an interconnected porous gel structure. Pore diameter was capable of being controlled through the fibre-spinning temperature, where it was shown that shellac fibres spun at a lower temperature yielded larger diameter pores in the resultant gels. These gels demonstrated a fast actuation, with a 77 % volume loss of a cylindrical sample in just 30 s when immersed in a 60 …
A Multifunctional Hierarchical Porous Sio2/Go Membrane For High Efficiency Oil/Water Separation And Dye Removal, Yue Liu, Fengrui Zhang, Wenxia Zhu, Dong Su, Zhiyuan Sang, Xiao Yan, Sheng Li, Ji Liang, Shi Xue Dou
A Multifunctional Hierarchical Porous Sio2/Go Membrane For High Efficiency Oil/Water Separation And Dye Removal, Yue Liu, Fengrui Zhang, Wenxia Zhu, Dong Su, Zhiyuan Sang, Xiao Yan, Sheng Li, Ji Liang, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
2020 Elsevier Ltd Removing contaminants from wastewater is critical to secure the global water supply. Membrane technologies for water purification are exceptionally attractive due to their high efficiency and low energy consumption. The traditional porous polymer films, however, are easy to be fouled by the organic pollutants, causing pore blockage and deteriorated separation performance. We herein report the rational design of a porous SiO2/GO hybrid membrane by coupling graphene oxide (GO) nanosheets with SiO2 nanoparticles and using ethylenediamine to crosslink them, for efficient oil/water separation and dye removal. The SiO2 nanoparticles provide an excellent hydrophilicity and underwater superoleophobicity interface, resulting …
S/N-Doped Carbon Nanofibers Affording Fe7s8 Particles With Superior Sodium Storage, Xiu Li, Tao Liu, Yunxiao Wang, Shulei Chou, Xun Xu, Anmin Cao, Libao Chen
S/N-Doped Carbon Nanofibers Affording Fe7s8 Particles With Superior Sodium Storage, Xiu Li, Tao Liu, Yunxiao Wang, Shulei Chou, Xun Xu, Anmin Cao, Libao Chen
Australian Institute for Innovative Materials - Papers
2020 Iron sulfides draw much attention as electrode candidates for sodium-ion batteries (SIBs) due to the rich chemical stoichiometries and high capacity. However, they usually exhibit poor cycling performance due to the large volume change during sodiation/desodiation process. In this work, we embed Fe7S8 nanoparticles into sulfur, nitrogen-doped carbon (S/N-C) nanofibers through electrospinning/sulfurization processes. The heteroatom doped carbon matrixes could effectively protect the Fe7S8 from structural collapse, obtaining a stable cycling performance. Moreover, the conductive matrixes with 1D structure can facilitate the diffusion of electrons, leading to good rate capability. As results, the as-designed Fe7S8@S/N-C nanofibers present a discharge capacity …
The Influence Of A Novel Inorganic-Polymer Lubricant On The Microstructure Of Interstitial-Free Steel During Ferrite Rolling, Ning Kong, Jie Zhang, Hongbo Li, Boyu Wei, David R. G Mitchell
The Influence Of A Novel Inorganic-Polymer Lubricant On The Microstructure Of Interstitial-Free Steel During Ferrite Rolling, Ning Kong, Jie Zhang, Hongbo Li, Boyu Wei, David R. G Mitchell
Australian Institute for Innovative Materials - Papers
2020 by the authors. Licensee MDPI, Basel, Switzerland. A novel polyphosphate lubricant was used and evaluated during hot (ferrite) rolling of an interstitial-free (IF) steel. The texture evolution of these rolled IF steels have been examined by means of X-ray diffraction (XRD) and electron backscatter diffraction (EBSD) measurements. The polyphosphate lubricant shows an improved lubrication performance in terms of the texture optimization compared with lubricating oil and with unlubricated conditions. The γ-fiber texture is enhanced, and less shear texture is produced. This microstructure is responsible for enhanced drawability of ferrite rolled IF steels. The very high thermal stability of the …
Green Synthesis And Stabilization Of Silver Nanoparticles Using Lysimachia Foenum-Graecum Hance Extract And Their Antibacterial Activity, Widsanusan Chartarrayawadee, Phattaraporn Charoensin, Juthaporn Saenma, Thearum Rin, Phichaya Khamai, Pitak Nasomjai, Chee O. Too
Green Synthesis And Stabilization Of Silver Nanoparticles Using Lysimachia Foenum-Graecum Hance Extract And Their Antibacterial Activity, Widsanusan Chartarrayawadee, Phattaraporn Charoensin, Juthaporn Saenma, Thearum Rin, Phichaya Khamai, Pitak Nasomjai, Chee O. Too
Australian Institute for Innovative Materials - Papers
2020 Chartarrayawadee et al., published by De Gruyter 2020. The Lysimachia foenumgraecum Hance extract (LHE) was used for silver nanoparticles (AgNPs) synthesis. In this study, the herbal plant of Lysimachia foenumgraecum Hance (LH) was extracted with deionized water and we are the first to successfully use LHE as reducing and stabilizing agents for the green synthesis of AgNPs. The concentration of LHE used in this study was in the range of 0.003 to 1.0 wt%. Aqueous colloidal solutions of AgNPs reduced and stabilized by LHE show long-term stability due to the steric stabilization effect. This can be confirmed by zeta …
Design, Synthesis And Characterization Of A Novel Type Of Thermo-Responsible Phospholipid Microcapsule-Alginate Composite Hydrogel For Drug Delivery, Liang Ding, Xinxia Cui, Rui Jiang, Keya Zhou, Yalei Wen, Chenfeng Wang, Zhilian Yue, Shigang Shen, Xuefeng Pan
Design, Synthesis And Characterization Of A Novel Type Of Thermo-Responsible Phospholipid Microcapsule-Alginate Composite Hydrogel For Drug Delivery, Liang Ding, Xinxia Cui, Rui Jiang, Keya Zhou, Yalei Wen, Chenfeng Wang, Zhilian Yue, Shigang Shen, Xuefeng Pan
Australian Institute for Innovative Materials - Papers
Liposomes are extensively used in drug delivery, while alginates are widely used in tissue engineering. However, liposomes are usually thermally unstable and drug-leaking when in liquids, while the drug carriers made of alginates show low loading capacities when used for drug delivery. Herein, we developed a type of thermo-responsible liposome-alginate composite hydrogel (TSPMAH) by grafting thermo-responsive liposomes onto alginates by using Ca2+ mediated bonding between the phosphatidic serine (PS) in the liposome membrane and the alginate. The temperature-sensitivity of the liposomes was actualized by using phospholipids comprising dipalmitoylphosphatidylcholine (DPPC) and PS and the liposomes were prepared by a thin-film dispersion …
Rich Topological Nodal Line Bulk States Together With Drum-Head-Like Surface States In Naalge With Anti-Pbfcl Type Structure, Xiaotian Wang, Guangqian Ding, Zhenxiang Cheng, Gokhan Surucu, Xiaolin Wang, Tie Yang
Rich Topological Nodal Line Bulk States Together With Drum-Head-Like Surface States In Naalge With Anti-Pbfcl Type Structure, Xiaotian Wang, Guangqian Ding, Zhenxiang Cheng, Gokhan Surucu, Xiaolin Wang, Tie Yang
Australian Institute for Innovative Materials - Papers
The band topology in condensed matter has attracted widespread attention in recent years. Due to the band inversion, topological nodal line semimetals (TNLSs) have band crossing points (BCPs) around the Fermi level, forming a nodal line. In this work, by means of first-principles, we observe that the synthesized NaAlGe intermetallic compound with anti-PbFCl type structure is a TNLS with four NLs in the kz = 0 and kz = π planes. All these NLs in NaAlGe exist around the Fermi level, and what is more, these NLs do not overlap with other bands. The exotic drum-head-like surface states can be …
The Cathode Choice For Commercialization Of Sodium-Ion Batteries: Layered Transition Metal Oxides Versus Prussian Blue Analogs, Qiannan Liu, Zhe Hu, Mingzhe Chen, Chao Zou, Huile Jin, Shun Wang, Shulei Chou, Yong Liu, Shi Xue Dou
The Cathode Choice For Commercialization Of Sodium-Ion Batteries: Layered Transition Metal Oxides Versus Prussian Blue Analogs, Qiannan Liu, Zhe Hu, Mingzhe Chen, Chao Zou, Huile Jin, Shun Wang, Shulei Chou, Yong Liu, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim With the unprecedentedly increasing demand for renewable and clean energy sources, the sodium-ion battery (SIB) is emerging as an alternative or complementary energy storage candidate to the present commercial lithium-ion battery due to the abundance and low cost of sodium resources. Layered transition metal oxides and Prussian blue analogs are reviewed in terms of their commercial potential as cathode materials for SIBs. The recent progress in research on their half cells and full cells for the ultimate application in SIBs are summarized. In addition, their electrochemical performance, suitability for scaling up, cost, …
Electrochemical Preparation System For Unique Mesoporous Hemisphere Gold Nanoparticles Using Block Copolymer Micelles, Hyunsoo Lim, Tomota Nagaura, Minjun Kim, Kenya Kani, Jeonghun Kim, Yoshio Bando, Saad Alshehri, Tansir Ahamad, Jungmok You, Jongbeom Na, Yusuke Yamauchi
Electrochemical Preparation System For Unique Mesoporous Hemisphere Gold Nanoparticles Using Block Copolymer Micelles, Hyunsoo Lim, Tomota Nagaura, Minjun Kim, Kenya Kani, Jeonghun Kim, Yoshio Bando, Saad Alshehri, Tansir Ahamad, Jungmok You, Jongbeom Na, Yusuke Yamauchi
Australian Institute for Innovative Materials - Papers
© 2020 The Royal Society of Chemistry. Gold nanoparticles (AuNPs) are widely used in various applications, such as biological delivery, catalysis, and others. In this report, we present a novel synthetic method to prepare mesoporous hemisphere gold nanoparticles (MHAuNPs) via electrochemical reduction reaction with the aid of polymeric micelle assembly as a pore-directing agent.
High-Performance Room-Temperature Sodium-Sulfur Battery Enabled By Electrocatalytic Sodium Polysulfides Full Conversion, Nana Wang, Yunxiao Wang, Zhongchao Bai, Zhiwei Fang, Xiao Zhang, Zhongfei Xu, Yu Ding, Xun Xu, Yi Du, Shi Xue Dou, Guihua Yu
High-Performance Room-Temperature Sodium-Sulfur Battery Enabled By Electrocatalytic Sodium Polysulfides Full Conversion, Nana Wang, Yunxiao Wang, Zhongchao Bai, Zhiwei Fang, Xiao Zhang, Zhongfei Xu, Yu Ding, Xun Xu, Yi Du, Shi Xue Dou, Guihua Yu
Australian Institute for Innovative Materials - Papers
© 2020 The Royal Society of Chemistry. Room-temperature sodium-sulfur (RT-Na-S) batteries are highly desirable for grid-scale stationary energy storage due to their low cost; however, short cycling stability caused by the incomplete conversion of sodium polysulfides is a major issue for their application. Herein, we introduce an effective sulfiphilic host, gold nanodots decorated on hierarchical N-doped carbon microspheres (CN/Au/S), to achieve completely reversible conversion reactions in the S cathode by electrocatalyzing the low-kinetics conversion of Na2S4 into NaS2 (discharge process) or S (charge process). Besides, gold nanodots and N-doped carbon can increase the conductivity of the S cathode and provide …
Scaling Behavior Of Quasi-One-Dimensional Vortex Avalanches In Superconducting Films, A Qviller, T Qureishy, Y Xu, H Suo, P Mozhaev, J Hansen, J Vestgården, Tom H. Johansen, Pavlo Mikheenko
Scaling Behavior Of Quasi-One-Dimensional Vortex Avalanches In Superconducting Films, A Qviller, T Qureishy, Y Xu, H Suo, P Mozhaev, J Hansen, J Vestgården, Tom H. Johansen, Pavlo Mikheenko
Australian Institute for Innovative Materials - Papers
Scaling behaviour of dynamically driven vortex avalanches in superconducting YBa2Cu3O7-δ films deposited on tilted crystalline substrates has been observed using quantitative magneto-optical imaging. Two films with different tilt angles are characterized by the probability distributions of avalanche size in terms of the number of moving vortices. It is found in both samples that these distributions follow power-laws over up to three decades, and have exponents ranging between 1.0 and 1.4. The distributions also show clear finite-size scaling, when the system size is defined by the depth of the flux penetration front - a signature of self-organized criticality. A scaling relation …
Non-Zero Spontaneous Magnetic Moment Along Crystalline B-Axis For Rare Earth Orthoferrites, Mohanad Hazim Mohammed, Zhenxiang Cheng, Shixun Cao, Kirrily C. Rule, Christopher Richardson, A Edwards, Andrew J. Studer, Josip Horvat
Non-Zero Spontaneous Magnetic Moment Along Crystalline B-Axis For Rare Earth Orthoferrites, Mohanad Hazim Mohammed, Zhenxiang Cheng, Shixun Cao, Kirrily C. Rule, Christopher Richardson, A Edwards, Andrew J. Studer, Josip Horvat
Australian Institute for Innovative Materials - Papers
© 2020 Author(s). Rare earth orthoferrites demonstrate great application potentials in spintronics and optical devices due to their multiferroic and magnetooptical properties. In RFeO3, magnetic R3+ undergo a spontaneous spin reorientation in a temperature range determined by R (rare earth), where the magnetic structure changes from Γ2 to Γ4. The b-axis component of their magnetic moment, Mb, is reported in numerous neutron diffraction studies to remain zero at all temperatures. More sensitive magnetometer measurements reveal a small non-zero Mb, which is minute above ∼200 K. Mb increases with cooling and reaches values of ∼10-3 μB/f.u. at temperatures within or below …
H-Infinity Adaptive Observer Enhancements For Vehicle Chassis Dynamics-Based Navigation Sensor Fault Construction, Linlin Xia, Jingyu Cong, Xun Xu, Yiping Gao, Shufeng Zhang
H-Infinity Adaptive Observer Enhancements For Vehicle Chassis Dynamics-Based Navigation Sensor Fault Construction, Linlin Xia, Jingyu Cong, Xun Xu, Yiping Gao, Shufeng Zhang
Australian Institute for Innovative Materials - Papers
© The Author(s) 2020. The issues of chassis dynamics-based navigation sensor fault and state estimation in land vehicles are specialized in this study. Owing to the essential attributes of robust theory-based observers, an H-infinity adaptive observer is proposed to implement the fault reconstructions of faulty sensors, offering a reference to vehicles for further favorable control decision-making. This observer fuses a linear matrix inequality convex optimization strategy, with the dynamics of land vehicles established mathematically, the consequent problems associated with augmented descriptor system state-space model, Lyapunov stability and linear matrix inequality convex optimization are discussed in detail. The numerical simulations on …