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Articles 61 - 90 of 1524
Full-Text Articles in Physical Sciences and Mathematics
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 …
Comparative Evaluation Of The Structural And Other Features Governing Photo-Electrochemical Oxygen Evolution By Ca/Mn Oxides, Ankita Gagrani, Mohammed Alsultan, Gerhard F. Swiegers, Takuya Tsuzuki
Comparative Evaluation Of The Structural And Other Features Governing Photo-Electrochemical Oxygen Evolution By Ca/Mn Oxides, Ankita Gagrani, Mohammed Alsultan, Gerhard F. Swiegers, Takuya Tsuzuki
Australian Institute for Innovative Materials - Papers
Mn-Based oxides, particularly CaMn oxides, have recently attracted significant practical interest as a new class of catalyst due to their elemental and structural similarity to the natural oxygen evolving cluster (OEC) in photosynthetic plant cells. However, their performance as oxygen-generating anodes in photoelectrochemical cells has not been studied in detail. In this work, ultra-fine particles of amorphous MnO2, crystalline MnO2 nanorods, Ca2Mn3O8, CaMn2O4 and CaMnO3 were synthesised using a green and scalable mechanochemical method. The particles were comparatively studied as water oxidation photocatalysts in a photo-electrochemical cell at near-neutral pH. The oxides were immobilized on the anode surface using an …
Electrofluidic Control Of Bioactive Molecule Delivery Into Soft Tissue Models Based On Gelatin Methacryloyl Hydrogels Using Threads And Surgical Sutures, Joan Cabot, Luciana Daikuara, Zhilian Yue, Patricia Y. Hayes, Xiao Liu, Gordon G. Wallace, Brett Paull
Electrofluidic Control Of Bioactive Molecule Delivery Into Soft Tissue Models Based On Gelatin Methacryloyl Hydrogels Using Threads And Surgical Sutures, Joan Cabot, Luciana Daikuara, Zhilian Yue, Patricia Y. Hayes, Xiao Liu, Gordon G. Wallace, Brett Paull
Australian Institute for Innovative Materials - Papers
© 2020, The Author(s). The delivery of bioactive molecules (drugs) with control over spatial distribution remains a challenge. Herein, we demonstrate for the first time an electrofluidic approach to controlled delivery into soft tissue models based on gelatin methacryloyl (GelMA) hydrogels. This was achieved using a surgical suture, whereby transport of bioactive molecules, including drugs and proteins, was controlled by imposition of an electric field. Commonly employed surgical sutures or acrylic threads were integrated through the hydrogels to facilitate the directed introduction of bioactive species. The platform consisted of two reservoirs into which the ends of the thread were immersed. …
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.
Voltage-Induced Penetration Effect In Liquid Metals At Room Temperature, Fei Yun, Zhenwei Yu, Yahua He, Lei Jiang, Zhao Wang, Haoshuang Gu, Xiaolin Wang
Voltage-Induced Penetration Effect In Liquid Metals At Room Temperature, Fei Yun, Zhenwei Yu, Yahua He, Lei Jiang, Zhao Wang, Haoshuang Gu, Xiaolin Wang
Australian Institute for Innovative Materials - Papers
© 2020 The Author(s) 2019. Published by Oxford University Press on behalf of China Science Publishing & Media Ltd. Room-temperature liquid metal is discovered to be capable of penetrating through macro- and microporous materials by applying a voltage. The liquid metal penetration effects are demonstrated in various porous materials such as tissue paper, thick and fine sponges, fabrics, and meshes. The underlying mechanism is that the high surface tension of liquid metal can be significantly reduced to near-zero due to the voltage-induced oxidation of the liquid metal surface in a solution. It is the extremely low surface tension and gravity …
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 …
Hydrogen Terminated Germanene For A Robust Self-Powered Flexible Photoelectrochemical Photodetector, Nana Liu, Hui Qiao, Kang Xu, Yilian Xi, Long Ren, Ningyan Cheng, Dandan Cui, Xiang Qi, Xun Xu, Weichang Hao, Shi Xue Dou, Yi Du
Hydrogen Terminated Germanene For A Robust Self-Powered Flexible Photoelectrochemical Photodetector, Nana Liu, Hui Qiao, Kang Xu, Yilian Xi, Long Ren, Ningyan Cheng, Dandan Cui, Xiang Qi, Xun Xu, Weichang Hao, Shi Xue Dou, Yi Du
Australian Institute for Innovative Materials - Papers
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim As a rising star in the family of graphene analogues, germanene shows great potential for electronic and optical device applications due to its unique structure and electronic properties. It is revealed that the hydrogen terminated germanene not only maintains a high carrier mobility similar to that of germanene, but also exhibits strong light–matter interaction with a direct band gap, exhibiting great potential for photoelectronics. In this work, few-layer germanane (GeH) nanosheets with controllable thickness are successfully synthesized by a solution-based exfoliation–centrifugation route. Instead of complicated microfabrication techniques, a robust photoelectrochemical (PEC)-type …
A Survey Of Image Semantics-Based Visual Simultaneous Localization And Mapping: Application-Oriented Solutions To Autonomous Navigation Of Mobile Robots, Linlin Xia, Jiashuo Cui, Ran Shen, Xun Xu, Yiping Gao, Xinying Li
A Survey Of Image Semantics-Based Visual Simultaneous Localization And Mapping: Application-Oriented Solutions To Autonomous Navigation Of Mobile Robots, Linlin Xia, Jiashuo Cui, Ran Shen, Xun Xu, Yiping Gao, Xinying Li
Australian Institute for Innovative Materials - Papers
© The Author(s) 2020. As one of the typical application-oriented solutions to robot autonomous navigation, visual simultaneous localization and mapping is essentially restricted to simplex environmental understanding based on geometric features of images. By contrast, the semantic simultaneous localization and mapping that is characterized by high-level environmental perception has apparently opened the door to apply image semantics to efficiently estimate poses, detect loop closures, build 3D maps, and so on. This article presents a detailed review of recent advances in semantic simultaneous localization and mapping, which mainly covers the treatments in terms of perception, robustness, and accuracy. Specifically, the concept …
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 …
On The Degradation Of Retained Austenite In Transformation Induced Plasticity Steel, Ilana Timokhina, Azdiar Adil Gazder, Jiangting Wang, Ilias Bikmukhametov, Peter Hodgson, Frank Niessen, Elena V. Pereloma
On The Degradation Of Retained Austenite In Transformation Induced Plasticity Steel, Ilana Timokhina, Azdiar Adil Gazder, Jiangting Wang, Ilias Bikmukhametov, Peter Hodgson, Frank Niessen, Elena V. Pereloma
Australian Institute for Innovative Materials - Papers
© 2020, The Minerals, Metals & Materials Society and ASM International. A transformation-induced plasticity steel was thermomechanically processed and then transformed to bainite at an isothermal transformation temperature of 723 K for 1800 seconds, which exceeds the time required for completion of the bainite transformation. The formation of lenticular-shaped carbides with a triclinic lattice and internal substructure was found after thermomechanical processing. After 16 years of storage at room temperature, the decomposition of retained austenite into pearlite was observed for the first time at this temperature.
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 …
Understanding High-Rate K+-Solvent Co-Intercalation In Natural Graphite For Potassium-Ion Batteries, Lin Li, Luojia Liu, Zhe Hu, Yong Lu, Qiannan Liu, Song Jin, Qiu Zhang, Shuo Zhao, Shulei Chou
Understanding High-Rate K+-Solvent Co-Intercalation In Natural Graphite For Potassium-Ion Batteries, Lin Li, Luojia Liu, Zhe Hu, Yong Lu, Qiannan Liu, Song Jin, Qiu Zhang, Shuo Zhao, Shulei Chou
Australian Institute for Innovative Materials - Papers
© 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Graphite shows great potential as an anode material for rechargeable metal-ion batteries because of its high abundance and low cost. However, the electrochemical performance of graphite anode materials for rechargeable potassium-ion batteries needs to be further improved. Reported herein is a natural graphite with superior rate performance and cycling stability obtained through a unique K+-solvent co-intercalation mechanism in a 1 m KCF3SO3 diethylene glycol dimethyl ether electrolyte. The co-intercalation mechanism was demonstrated by ex situ Fourier transform infrared spectroscopy and in situ X-ray diffraction. Moreover, the structure of the [K-solvent]+ complexes …
Twins Or The Omega Phase: Which Is It In High Carbon Steels?, Gilberto Casillas, Wenwen Song, Azdiar Adil Gazder
Twins Or The Omega Phase: Which Is It In High Carbon Steels?, Gilberto Casillas, Wenwen Song, Azdiar Adil Gazder
Australian Institute for Innovative Materials - Papers
© 2020 Acta Materialia Inc. Electron diffraction coupled with aberration-corrected (AC) scanning transmission electron microscopy (STEM) is used to image, identify and confirm the structure producing double diffracted spots seen in electron diffraction patterns in twinned high-carbon steels. The experimental and simulated data show that regions comprising: (i) overlaps between a twin and the matrix or, (ii) overlapping twins, create projected structures that are similar to the ω phase observed in other metastable bcc systems. Thus, AC STEM is proficient in the definitive identification of twins in bcc high carbon steels or nanoscale phases in metastable bcc systems.
Controlled Hydrogenation Into Defective Interlayer Bismuth Oxychloride Via Vacancy Engineering, Dandan Cui, Kang Xu, Xingan Dong, Dongdong Lv, Fan Dong, Weichang Hao, Yi Du, Jun Chen
Controlled Hydrogenation Into Defective Interlayer Bismuth Oxychloride Via Vacancy Engineering, Dandan Cui, Kang Xu, Xingan Dong, Dongdong Lv, Fan Dong, Weichang Hao, Yi Du, Jun Chen
Australian Institute for Innovative Materials - Papers
Hydrogenation is an effective approach to improve the performance of photocatalysts within defect engineering methods. The mechanism of hydrogenation and synergetic effects between hydrogen atoms and local electronic structures, however, remain unclear due to the limits of available photocatalytic systems and technical barriers to observation and measurement. Here, we utilize oxygen vacancies as residential sites to host hydrogen atoms in a layered bismuth oxychloride material containing defects. It is confirmed theoretically and experimentally that the hydrogen atoms interact with the vacancies and surrounding atoms, which promotes the separati30on and transfer processes of photo-generated carriers via the resulting band structure. The …
A Wearable Sensor For The Detection Of Sodium And Potassium In Human Sweat During Exercise, Paolo Pirovano, Matthew Dorrian, Akshay Shinde, Andrew Donohoe, Aidan Brady, Niall Moyna, Gordon G. Wallace, Dermot Diamond, Margaret Mccaul
A Wearable Sensor For The Detection Of Sodium And Potassium In Human Sweat During Exercise, Paolo Pirovano, Matthew Dorrian, Akshay Shinde, Andrew Donohoe, Aidan Brady, Niall Moyna, Gordon G. Wallace, Dermot Diamond, Margaret Mccaul
Australian Institute for Innovative Materials - Papers
© 2020 The Author(s) The SwEatch platform, a wearable sensor for sampling and measuring the concentration of electrolytes in human sweat in real time, has been improved in order to allow the sensing of two analytes. The solid contact ion-sensitive electrodes (ISEs) for the detection of Na+ and K+ have been developed in two alternative formulations, containing either poly(3,4-ethylenedioxythiophene) (PEDOT) or poly(3-octylthiophene-2,5-diyl) (POT) as a conductive polymer transducing component. The solution-processable POT formulation simplifies the fabrication process, and sensor to sensor reproducibility has been improved via partial automation using an Opentron® automated pipetting robot. The resulting electrodes showed good sensitivity …
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.
Nodal Ring Spin Gapless Semiconductor: New Member Of Spintronic Materials, Tie Yang, Zhenxiang Cheng, Xiaotian Wang, Xiaolin Wang
Nodal Ring Spin Gapless Semiconductor: New Member Of Spintronic Materials, Tie Yang, Zhenxiang Cheng, Xiaotian Wang, Xiaolin Wang
Australian Institute for Innovative Materials - Papers
Both spin gapless semiconductors (SGSs) and nodal ring states (NRSs) have aroused great scientific interest in recent years due to their unique electronic properties and high application potential. However, since their advent, all SGSs and NRSs have been predicted in independent materials. In this work, we proposed a novel type of material, nodal ring spin gapless semiconductor (NRSGS), which combines both states of the SGSs and NRSs. The synthesized material Mg2VO4 is selected as a potential candidate. Detailed band structure analysis reveals that there are gapless crossings in the spin-up direction, which are from multiple topological nodal rings located exactly …
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 …
Recent Progress On Understanding And Constructing Reliable Na Anode For Aprotic Na-O2 Batteries: A Mini Review, Shuo Zhao, Lin Li, Fujun Li, Shulei Chou
Recent Progress On Understanding And Constructing Reliable Na Anode For Aprotic Na-O2 Batteries: A Mini Review, Shuo Zhao, Lin Li, Fujun Li, Shulei Chou
Australian Institute for Innovative Materials - Papers
© 2020 The Authors Aprotic Na-O2 batteries attract increasing attention for the low charging/discharging overpotentials, high energy density, and low cost. Significant progress has been achieved in the battery system, but challenges remain in constructing reliable Na anodes. This review presents an overview of the fundamental understanding of Na anodes in aprotic Na-O2 batteries, including chemical reactivity of Na metal and dendrite formation mechanism. The constructing strategies are summarized as mechanical reinforcement of separators, electrolyte modifications, and electrode structure and material design. Perspectives are envisioned for the further development of durable Na anodes for aprotic Na-O2 batteries.
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 …
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 …
Coupling N2 And Co2 In H2o To Synthesize Urea Under Ambient Conditions, Chen Chen, Xiaorong Zhu, Xiaojian Wen, Yangyang Zhou, Ling Zhou, Hao Li, Li Tao, Qiling Li, Shiqian Du, Tingting Liu, Dafeng Yan, Chao Xie, Yuqin Zou, Yanyong Wang, Ru Chen, Jia Huo, Yafei Liu, Jun Cheng, Hui Su, Xu Zhao, Weiren Cheng, Qinghua Liu, Hongzhen Lin, Jun Luo, Jun Chen, Mingdong Dong, Kai Cheng, Conggang Li, Shuangyin Wang
Coupling N2 And Co2 In H2o To Synthesize Urea Under Ambient Conditions, Chen Chen, Xiaorong Zhu, Xiaojian Wen, Yangyang Zhou, Ling Zhou, Hao Li, Li Tao, Qiling Li, Shiqian Du, Tingting Liu, Dafeng Yan, Chao Xie, Yuqin Zou, Yanyong Wang, Ru Chen, Jia Huo, Yafei Liu, Jun Cheng, Hui Su, Xu Zhao, Weiren Cheng, Qinghua Liu, Hongzhen Lin, Jun Luo, Jun Chen, Mingdong Dong, Kai Cheng, Conggang Li, Shuangyin Wang
Australian Institute for Innovative Materials - Papers
© 2020, The Author(s), under exclusive licence to Springer Nature Limited. The use of nitrogen fertilizers has been estimated to have supported 27% of the world’s population over the past century. Urea (CO(NH2)2) is conventionally synthesized through two consecutive industrial processes, N2 + H2 → NH3 followed by NH3 + CO2 → urea. Both reactions operate under harsh conditions and consume more than 2% of the world’s energy. Urea synthesis consumes approximately 80% of the NH3 produced globally. Here we directly coupled N2 and CO2 in H2O to produce urea under ambient conditions. The process was carried out using an …
Ac Loss And Contact Resistance Of Different Cicc Cable Patterns: Experiments And Numerical Modeling, Anvar Valiyaparambil Abdulsalam, J Qin, Y Wu, T Bagni, A Devred, T Haugan, Md. Shahriar Al Hossain, C Zhou, Arend Nijhuis
Ac Loss And Contact Resistance Of Different Cicc Cable Patterns: Experiments And Numerical Modeling, Anvar Valiyaparambil Abdulsalam, J Qin, Y Wu, T Bagni, A Devred, T Haugan, Md. Shahriar Al Hossain, C Zhou, Arend Nijhuis
Australian Institute for Innovative Materials - Papers
© 2020 The Author(s) For upcoming nuclear fusion energy reactors, like the China Fusion Engineering Test Reactor (CFETR) and EU-DEMO, the superconducting Cable-In-Conduit Conductors (CICC) are in the design phase, and the operating conditions like electromagnetic forces can be higher than in previous devices like ITER. The prototype conductors for the Central Solenoid (CS) coils in the CFETR, for example, are designed to produce a peak field of 19.9 T and are expected to be made of high current density Nb3Sn strands. Investigations are also ongoing on the application of bismuth strontium calcium copper oxide (BSCCO) and MgB2 strands for …
A Self‐Assembled Co2 Reduction Electrocatalyst: Posy‐Bouquet‐Shaped Gold‐Polyaniline Core‐Shell Nanocomposite, Amruthalakshmi Vijayakumar, Yong Zhao, Jinshuo Zou, Kezhong Wang, Chong Yong Lee, Douglas Macfarlane, Caiyun Wang, Gordon G. Wallace
A Self‐Assembled Co2 Reduction Electrocatalyst: Posy‐Bouquet‐Shaped Gold‐Polyaniline Core‐Shell Nanocomposite, Amruthalakshmi Vijayakumar, Yong Zhao, Jinshuo Zou, Kezhong Wang, Chong Yong Lee, Douglas Macfarlane, Caiyun Wang, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
© 2020 Wiley-VCH GmbH Here it was demonstrated that the decoration of gold (Au) with polyaniline is an effective approach in increasing its electrocatalytic reduction of CO2 to CO. The core-shell-structured gold-polyaniline (Au−PANI) nanocomposite delivered a CO2-to-CO conversion efficiency of 85 % with a high current density of 11.6 mA cm−2. The polyaniline shell facilitated CO2 adsorption, and the subsequent formation of reaction intermediates on the gold core contributed to the high efficiency observed.