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Articles 91 - 117 of 117
Full-Text Articles in Physical Sciences and Mathematics
A Hybrid Electrochemical Energy Storage Device Using Sustainable Electrode Materials, Manickam Minakshi, David R. G Mitchell, Robert Jones, Nimai Pramanik, Annelise Jean-Fulcrand, Georg Garnweitner
A Hybrid Electrochemical Energy Storage Device Using Sustainable Electrode Materials, Manickam Minakshi, David R. G Mitchell, Robert Jones, Nimai Pramanik, Annelise Jean-Fulcrand, Georg Garnweitner
Australian Institute for Innovative Materials - Papers
2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim A new electrochemical energy storage device, comprising a faradaic rechargeable pseudo-capacitor type electrode with a non-faradaic rechargeable capacitor electrode, is successfully developed for potential applications in smart electric grids. Mapping new electrodes possessing both high energy and power densities as well as long cycle life is vital for the sustainable energy management. In this work, we present a new approach to design electrodes, fabricated from sustainable resources by hybridizing calcined eggshell capacitor anode with a mixed binary metal oxide pseudo-capacitor cathode. Calcium carbonate (calcite), obtained from the biowaste-derived eggshell, is an effective …
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 …
Reversible Structural Evolution Of Sodium-Rich Rhombohedral Prussian Blue For Sodium-Ion Batteries, Wanlin Wang, Yong Gang, Zhe Hu, Zichao Yan, Weijie Li, Yongcheng Li, Qinfen Gu, Zhixing Wang, Shulei Chou, Hua-Kun Liu, Shi Xue Dou
Reversible Structural Evolution Of Sodium-Rich Rhombohedral Prussian Blue For Sodium-Ion Batteries, Wanlin Wang, Yong Gang, Zhe Hu, Zichao Yan, Weijie Li, Yongcheng Li, Qinfen Gu, Zhixing Wang, Shulei Chou, Hua-Kun Liu, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
2020, The Author(s). Iron-based Prussian blue analogs are promising low-cost and easily prepared cathode materials for sodium-ion batteries. Their materials quality and electrochemical performance are heavily reliant on the precipitation process. Here we report a controllable precipitation method to synthesize high-performance Prussian blue for sodium-ion storage. Characterization of the nucleation and evolution processes of the highly crystalline Prussian blue microcubes reveals a rhombohedral structure that exhibits high initial Coulombic efficiency, excellent rate performance, and cycling properties. The phase transitions in the as-obtained material are investigated by synchrotron in situ powder X-ray diffraction, which shows highly reversible structural transformations between rhombohedral, …
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.
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 …
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 …
Light Soaking Effect Driven In Porphyrin Dye-Sensitized Solar Cells Using 1d Tio2 Nanotube Photoanodes, Jung-Ho Yun, Attila J. Mozer, Pawel W. Wagner, David Offier, Rose Amal, Yun Hau Ng
Light Soaking Effect Driven In Porphyrin Dye-Sensitized Solar Cells Using 1d Tio2 Nanotube Photoanodes, Jung-Ho Yun, Attila J. Mozer, Pawel W. Wagner, David Offier, Rose Amal, Yun Hau Ng
Australian Institute for Innovative Materials - Papers
© 2020 Light soaking (LS) effect on porphyrin (GD2) dye-sensitized solar cells (DSSCs) using well-ordered TiO2 nanotube (TNT) photoanodes was studied with different lengths of TNTs and LS treatment time. The TNT array possessing longer length and larger tube diameter had improved photoelectrochemical (PEC) property by generating larger photocurrent, and besides provided a larger surface area to yield more dye loading. The LS effect on GD2-applied DSSCs using TNT photoanodes was triggered off in the first 5 min of the LS treatment, and gradually increased during 60 min LS treatment. The improved PEC property and dye loading by longer TNT …
Biobr Nanoflakes With Strong Kerr Nonlinearity Towards Hybrid Integrated Photonic Devices, Linnan Jia, Dandan Cui, Jiayang Wu, Haifeng Feng, Yunyi Yang, Tieshan Yang, Yang Qu, Yi Du, Weichang Hao, Baohua Jia, David Moss
Biobr Nanoflakes With Strong Kerr Nonlinearity Towards Hybrid Integrated Photonic Devices, Linnan Jia, Dandan Cui, Jiayang Wu, Haifeng Feng, Yunyi Yang, Tieshan Yang, Yang Qu, Yi Du, Weichang Hao, Baohua Jia, David Moss
Australian Institute for Innovative Materials - Papers
© 2020 SPIE. As a new group of advanced 2D layered materials, bismuth oxyhalides, i.e., BiOX (X = Cl, Br, I), have recently become of great interest. In this work, we characterize the third-order optical nonlinearities of BiOBr, an important member of the BiOX family. The nonlinear absorption and Kerr nonlinearity of BiOBr nanoflakes at both 800 nm and 1550 nm are characterized via the Z-Scan technique. Experimental results show that BiOBr nanoflakes exhibit a large nonlinear absorption coefficient β ∼ 10-7 m/W as well as a large Kerr coefficient n2 ∼ 10-14 m2/W. We also note that the n2 …
A Long Cycle-Life High-Voltage Spinel Lithium-Ion Battery Electrode Achieved By Site-Selective Doping, Gemeng Liang, Zhibin Wu, Christophe R. Didier, Wenchao Zhang, Jing Cuan, Baohua Li, Kuan-Yu Ko, Po Hung, Cheng Lu, Yuanzhen Chen, Grzegorz Leniec, Slawomir Kaczmarek, Bernt Johannessen, Lars Thomsen, Vanessa K. Peterson, Wei Kong Pang, Zaiping Guo
A Long Cycle-Life High-Voltage Spinel Lithium-Ion Battery Electrode Achieved By Site-Selective Doping, Gemeng Liang, Zhibin Wu, Christophe R. Didier, Wenchao Zhang, Jing Cuan, Baohua Li, Kuan-Yu Ko, Po Hung, Cheng Lu, Yuanzhen Chen, Grzegorz Leniec, Slawomir Kaczmarek, Bernt Johannessen, Lars Thomsen, Vanessa K. Peterson, Wei Kong Pang, Zaiping Guo
Australian Institute for Innovative Materials - Papers
© 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Spinel LiNi0.5Mn1.5O4 (LNMO) is a promising cathode candidate for the next-generation high energy-density lithium-ion batteries (LIBs). Unfortunately, the application of LNMO is hindered by its poor cycle stability. Now, site-selectively doped LNMO electrode is prepared with exceptional durability. In this work, Mg is selectively doped onto both tetrahedral (8a) and octahedral (16c) sites in the Fd (Formula presented.) m structure. This site-selective doping not only suppresses unfavorable two-phase reactions and stabilizes the LNMO structure against structural deformation, but also mitigates the dissolution of Mn during cycling. Mg-doped LNMOs exhibit extraordinarily stable …
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.
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) …
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 …
Development Of Ceo2 Nanodot Encrusted Tio2 Nanoparticles With Reduced Photocatalytic Activity And Increased Biocompatibility Towards A Human Keratinocyte Cell Line, Alexander Morlando, Marcela Chaki Borras, Yaser Rehman, Shahnaz Bakand, Philip J. Barker, Ronald Sluyter, Konstantin K. Konstantinov
Development Of Ceo2 Nanodot Encrusted Tio2 Nanoparticles With Reduced Photocatalytic Activity And Increased Biocompatibility Towards A Human Keratinocyte Cell Line, Alexander Morlando, Marcela Chaki Borras, Yaser Rehman, Shahnaz Bakand, Philip J. Barker, Ronald Sluyter, Konstantin K. Konstantinov
Australian Institute for Innovative Materials - Papers
The cytotoxic and genotoxic effects of titanium dioxide (TiO2) nanoparticles when exposed to ultraviolet (UV) radiation, particularly wavelengths between 320-400 nm, has raised concern over their safe use in health and cosmetic related products such as sunscreens. Cerium dioxide (CeO2) nanoparticles have been demonstrated to display biocompatible properties and antioxidant activity due to redox cycling of the Ce3+/Ce4+ oxidation states. In this work, CeO2/TiO2 nanocomposites were prepared through a standard precipitation method at atomic concentrations (at%) of Ce relative to Ti of 2.5, 5 and 10 at%, with the aim of reducing the photocatalytic activity of the core TiO2 nanoparticles …
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 …
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 …
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 …
Synthesis And 3d Printing Of Conducting Alginate–Polypyrrole Ionomers, Cassandra Wright, Binbin Zhang, Johnson Chung, Jonathan Pannell, Melissa Kuester, Paul J. Molino, Timothy Hanks
Synthesis And 3d Printing Of Conducting Alginate–Polypyrrole Ionomers, Cassandra Wright, Binbin Zhang, Johnson Chung, Jonathan Pannell, Melissa Kuester, Paul J. Molino, Timothy Hanks
Australian Institute for Innovative Materials - Papers
© 2020 by the authors. Licensee MDPI, Basel, Switzerland. Hydrogels composed of calcium cross-linked alginate are under investigation as bioinks for tissue engineering scaffolds due to their variable viscoelasticity, biocompatibility, and erodibility. Here, pyrrole was oxidatively polymerized in the presence of sodium alginate solutions to form ionomeric composites of various compositions. The IR spectroscopy shows that mild base is required to prevent the oxidant from attacking the alginate during the polymerization reaction. The resulting composites were isolated as dried thin films or cross-linked hydrogels and aerogels. The products were characterized by elemental analysis to determine polypyrrole incorporation, electrical conductivity measurements, …
Correlations Between The Structure And Superconducting Properties Of Mt-Ybacuo, Tetiana Prikhna, V Moshchill, J Rabier, X Chaud, A Joulain, Alexey Pan, D Litskendorf, T Habisreuther
Correlations Between The Structure And Superconducting Properties Of Mt-Ybacuo, Tetiana Prikhna, V Moshchill, J Rabier, X Chaud, A Joulain, Alexey Pan, D Litskendorf, T Habisreuther
Australian Institute for Innovative Materials - Papers
© Published under licence by IOP Publishing Ltd. Comprehensive experimental results of fully oxidized (up to YBa2Cu3O6,9-7) melt-Textured YBaCuO materials with different microstructures are presented. These microstructures are built respectively: (1) with a high dislocations density but almost without twins (after high temperature treatment at 2 GPa) and (2) with a high twin density, but practically free from dislocations and stacking faults (after high temperature oxygenation at 10-16 MPa). It is shown that for attaining high critical current densities and fields of irreversibility (jc(H-c, 0 T)=9•104 A/cm2, H irr=9.7 T at 77 K), a high twin density in YBa2Cu3O6.9-7 matrix …
Biomimetic Corneal Stroma Using Electro-Compacted Collagen, Zhi Chen, Xiao Liu, Jingjing You, Yihui Song, Eva Tomaskovic-Crook, Gerard L. Sutton, Jeremy Micah Crook, Gordon G. Wallace
Biomimetic Corneal Stroma Using Electro-Compacted Collagen, Zhi Chen, Xiao Liu, Jingjing You, Yihui Song, Eva Tomaskovic-Crook, Gerard L. Sutton, Jeremy Micah Crook, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
© 2020 Acta Materialia Inc. Engineering substantia propria (or stroma of cornea) that mimics the function and anatomy of natural tissue is vital for in vitro modelling and in vivo regeneration. There are, however, few examples of bioengineered biomimetic corneal stroma. Here we describe the construction of an orthogonally oriented 3D corneal stroma model (3D-CSM) using pure electro-compacted collagen (EC). EC films comprise aligned collagen fibrils and support primary human corneal stromal cells (hCSCs). Cell-laden constructs are analogous to the anatomical structure of native human cornea. The hCSCs are guided by the topographical cues provided by the aligned collagen fibrils …
Position Control Of A 3d Printed Soft Finger With Integrated Soft Pneumatic Sensing Chambers, Charbel Tawk, Emre Sariyildiz, Hao Zhou, Marc In Het Panhuis, Geoffrey M. Spinks, Gursel Alici
Position Control Of A 3d Printed Soft Finger With Integrated Soft Pneumatic Sensing Chambers, Charbel Tawk, Emre Sariyildiz, Hao Zhou, Marc In Het Panhuis, Geoffrey M. Spinks, Gursel Alici
Australian Institute for Innovative Materials - Papers
© 2020 IEEE. Soft robots require robust soft and flexible sensors that can undergo large deformations repeatedly. This work reports on soft robotic fingers with embedded soft pneumatic sensing chambers that are directly 3D printed without requiring postprocessing. A low-cost and open-source fused deposition modeling (FDM) 3D printer that employs an off-the-shelf soft thermoplastic poly(urethane) (TPU) was used to fabricate the monolithic fingers and sensing chambers. These pneumatic sensing chambers have multiple advantages including very fast response to any change in their internal volume, linearity, negligible hysteresis, repeatability, reliability, stability over time, long lifetime and very low power consumption. The …
Supercritical Co2-Constructed Intralayer [Bi2o2]2+Structural Distortion For Enhanced Co2 Electroreduction, Yannan Zhou, Pengfei Yan, Jun Jia, Suoying Zhang, Xiaoli Zheng, Li Zhang, Bin Zhang, Jun Chen, Weichang Hao, Gongji Chen, Qun Xu, Buxing Han
Supercritical Co2-Constructed Intralayer [Bi2o2]2+Structural Distortion For Enhanced Co2 Electroreduction, Yannan Zhou, Pengfei Yan, Jun Jia, Suoying Zhang, Xiaoli Zheng, Li Zhang, Bin Zhang, Jun Chen, Weichang Hao, Gongji Chen, Qun Xu, Buxing Han
Australian Institute for Innovative Materials - Papers
© 2020 The Royal Society of Chemistry. Inducing crystal distortion in two-dimensional (2D) materials to increase the number of active sites is of great significance in improving the intrinsic activity of electrocatalysts for the CO2 reduction reaction (CO2RR). Developing 2D materials as thin as possible is required for this goal. Herein, taking layered BiOCl as a prototype model, we achieved the intralayer [Bi2O2]2+ structural distortion by using supercritical CO2 as a solvent to reduce the number of interlayer chlorine atoms involved in the reaction. Contrary to expectations, further CO2RR experiments indicate that thick nanoplates exhibit a high faradaic efficiency of …
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 …