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Articles 31 - 60 of 1689
Full-Text Articles in Engineering
Assessing The Effects Of Mobility On Air Quality: The Liverpool Smart Pedestrian Project, Nicolas R. Verstaevel, Johan Barthelemy, Hugh I. Forehead, Bilal Arshad, Pascal Perez
Assessing The Effects Of Mobility On Air Quality: The Liverpool Smart Pedestrian Project, Nicolas R. Verstaevel, Johan Barthelemy, Hugh I. Forehead, Bilal Arshad, Pascal Perez
SMART Infrastructure Facility - Papers
With the drastic increase of their urban population, cities face huge challenges to maintain and update their infrastructures. Assessing in real time the effect of urban policies will be a key tool in the future of urban planning. In this paper, we discuss of mobility and its impact on air quality. We introduce a pilot project in which low cost IoT sensors are used to monitor flow of cars and pedestrians and concentration of particulate matters within the Australian city of Liverpool.
Novel Integrated Strategies Toward Efficient And Stable Unassisted Photoelectrochemical Water Splitting, Liqun Wang, Wenping Si, Xinggang Hou, Mingxia Wang, Xiaoli Liu, Yuhang Ye, Feng Hou, Ji Liang
Novel Integrated Strategies Toward Efficient And Stable Unassisted Photoelectrochemical Water Splitting, Liqun Wang, Wenping Si, Xinggang Hou, Mingxia Wang, Xiaoli Liu, Yuhang Ye, Feng Hou, Ji Liang
Australian Institute for Innovative Materials - Papers
© 2020 Unassisted photoelectrochemical (PEC) water splitting for hydrogen evolution has been regarded as a sustainable route for the harvest and utilization of solar energy. To achieve such unassisted PEC water splitting, two novel integrated strategies have been developed: to design tandem structures of photoanodes/photocathodes and to construct hybrid devices of solar/PEC cells. Some key unsolved problems, however, still limit the further development of high-performance unassisted PEC water splitting, such as low efficiency, poor stability, and high cost. Herein, we present a brief summary of the latest development in this area and propose perspectives for further enhancing this state-of-the-art solar-to‑hydrogen …
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 …
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 …
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. …
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 …
Interplay Between Cold Densification And Malic Acid Addition (C4h6o5) For The Fabrication Of Near-Isotropic Mgb2 Conductors For Magnet Application, Md. Shahriar Al Hossain, Carmine Senatore, Yusuke Yamauchi, Mislav Mustapic, Daniel Gajda, Dipak Patel, Aslam Khan, Jung Ho Kim, Andrzej Morawski, Rene Flukiger
Interplay Between Cold Densification And Malic Acid Addition (C4h6o5) For The Fabrication Of Near-Isotropic Mgb2 Conductors For Magnet Application, Md. Shahriar Al Hossain, Carmine Senatore, Yusuke Yamauchi, Mislav Mustapic, Daniel Gajda, Dipak Patel, Aslam Khan, Jung Ho Kim, Andrzej Morawski, Rene Flukiger
Australian Institute for Innovative Materials - Papers
© 2020 The effect of cold high pressure densification (CHPD) on anisotropy of the critical current density (Jc) in « in situ » single core binary and alloyed MgB2 tapes has been determined as a function of temperatures at 4.2 K, 20 K and 25 K as well as at applied magnetic fields up to 19 T. The study includes binary and C4H6O5 (malic acid) doped MgB2 tapes before and after CHPD. It is remarkable that the CHPD process not only improved the Jc values, in particular at the higher magnetic fields, but also decreased the anisotropy ratio, Γ = …
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 …
Principals And Strategies For Constructing A Highly Reversible Zinc Metal Anode In Aqueous Batteries, Chao Han, Weijie Li, Hua-Kun Liu, Shi Xue Dou, Jiazhao Wang
Principals And Strategies For Constructing A Highly Reversible Zinc Metal Anode In Aqueous Batteries, Chao Han, Weijie Li, Hua-Kun Liu, Shi Xue Dou, Jiazhao Wang
Australian Institute for Innovative Materials - Papers
© 2020 Elsevier Ltd Among all the electrochemical energy storage systems, zinc-based batteries, such as zinc-air, zinc-metal, zinc-ion batteries, etc., have been recognized as an important group of candidates that could be potential alternatives to the currently dominant lead-acid and lithium-ion battery systems, because they have many unbeatable merits, including direct use of zinc metal as electrode; compatible with low cost, non-flammable, and environement-friendly aqueous electrolyte; assembly in ambient conditions; environmental benignity; and high safety. Currently, however, the capacitance, cycle life, and safety of zinc-based batteries were significantly degraded by zinc-water interaction problems that took place on the zinc metal …
Strategies Of Engineering 2d Nanomaterial-Based Electrocatalysts Toward Hydrogen Evolution Reaction, Yaping Chen, Guoqiang Zhao, Wenping Sun
Strategies Of Engineering 2d Nanomaterial-Based Electrocatalysts Toward Hydrogen Evolution Reaction, Yaping Chen, Guoqiang Zhao, Wenping Sun
Australian Institute for Innovative Materials - Papers
© 2020, The Author(s). Electrochemical water splitting driven by renewable energy-derived electricity is considered as the most promising pathway for delivering clean and sustainable hydrogen production. The key to achieving an efficient water splitting process is developing highly active electrocatalysts. Two-dimensional (2D) nanomaterials hold great promise in the electrocatalysis field due to their unique physicochemical properties. Some of them are not active enough because of the poor intrinsic activity, low density of active sites or low electrical conductivity. Some are inert for electrocatalytic reactions, but are able to work as the functional substrates for hybrid electrocatalysts. Thus, tremendous strategies have …
Atomic-Scale Origin Of Ultrahigh Piezoelectricity In Samarium-Doped Pmn-Pt Ceramics, Chunchun Li, Bin Xu, Dabin Lin, Shujun Zhang, Laurent Bellaiche, Thomas R. Shrout, Fei Li
Atomic-Scale Origin Of Ultrahigh Piezoelectricity In Samarium-Doped Pmn-Pt Ceramics, Chunchun Li, Bin Xu, Dabin Lin, Shujun Zhang, Laurent Bellaiche, Thomas R. Shrout, Fei Li
Australian Institute for Innovative Materials - Papers
Designing high-performance piezoelectric materials based on atomic-scale calculations is highly desired in recent years, following the understanding of the structure-property relationship of state-of-the-art piezoelectric materials. Previous mesoscale simulations showed that local structural heterogeneity plays an important role in the piezoelectric property of ferroelectrics; that is, larger structural heterogeneity leads to higher piezoelectricity. In this Rapid Communication, by combining first-principles calculations and experimental characterizations, we explored the atomic-scale origin of the high piezoelectricity for samarium-doped Pb(Mg1/3Nb2/3)O3-PbTiO3 (PMN-PT) ceramics, which possesses the highest piezoelectric d33 of ∼1500pCN-1 among all known piezoelectric ceramics. The impacts of various dopants on local structure and piezoelectric …
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.