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Articles 1 - 30 of 1579
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In Situ Simultaneous Encapsulation Of Defective Mos2 Nanolayers And Sulfur Nanodots Into Span Fibers For High Rate Sodium-Ion Batteries, Fenqiang Luo, Xiaoshan Feng, Lingxing Zeng, Liangxu Lin, Xinye Li, Biyu Kang, Liren Xiao, Qinghua Chen, Mingdeng Wei, Qingrong Qian
In Situ Simultaneous Encapsulation Of Defective Mos2 Nanolayers And Sulfur Nanodots Into Span Fibers For High Rate Sodium-Ion Batteries, Fenqiang Luo, Xiaoshan Feng, Lingxing Zeng, Liangxu Lin, Xinye Li, Biyu Kang, Liren Xiao, Qinghua Chen, Mingdeng Wei, Qingrong Qian
Australian Institute for Innovative Materials - Papers
© 2020 Elsevier B.V. Molybdenum sulfide (MoS2) with layered structure has emerged as a promising anode material for sodium ion batteries (SIBs) in light of its particular surface chemistry and physical structures. However, the MoS2-based SIBs usually suffered from the weaknesses of the low rate capability and poor cycling stability induced by the sluggish kinetics of Na+ intercalation and the diffluent discharge products. Herein, the defective MoS2 nanocrystals and sulfur nanodots simultaneously embedded in sulfurized polyacrylonitrile (SPAN) fibers were fabricated via an electrospunning technology, followed by a simple annealing treatment. The unique architecture, in which MoS2 nanolayers and sulfur nanodots …
Reference Phantom Method For Ultrasonic Imaging Of Thin Dynamic Constructs, Andres Ruland, James M. Hill, Gordon G. Wallace
Reference Phantom Method For Ultrasonic Imaging Of Thin Dynamic Constructs, Andres Ruland, James M. Hill, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Quantitative ultrasound has a great potential for the non-destructive evaluation of tissue engineered constructs, where the local attenuation and the integrated backscatter coefficient (IBC) can be used for monitoring the development of biological processes. The local determination of both parameters can be achieved using the reference phantom method (RPM). However, its accuracy can be affected when evaluating constructs of evolving sound speed, attenuation and thickness, for example, when evaluating biodegradable hydrogels developing neocartilage. To assess the feasibility of using the RPM under such dynamic conditions while employing a 50-MHz transducer, we conducted a series of experiments on 3-mm-thick acellular hydrogels …
Electrical Stimulation-Induced Osteogenesis Of Human Adipose Derived Stem Cells Using A Conductive Graphene-Cellulose Scaffold, Jianfeng Li, Xiao Liu, Jeremy Micah Crook, Gordon G. Wallace
Electrical Stimulation-Induced Osteogenesis Of Human Adipose Derived Stem Cells Using A Conductive Graphene-Cellulose Scaffold, Jianfeng Li, Xiao Liu, Jeremy Micah Crook, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
The versatile properties of graphene-based materials are enabling various tissue regeneration, towards meeting an ever increasing demand for replacement tissues due to injury through trauma and disease. In particular, an innate ability for graphene to promote osteogenic differentiation of stem cells, combined with the potential to enhance the biological activity of cells through electrical stimulation (ES) using graphene, supports its use for osteoinduction or reconstruction. In this paper, we describe a miniaturized graphene-cellulose (G-C) scaffold-based device that incorporates electroactive G-C 'paper' within a polystyrene chamber for concomitant cell culture and ES. The G-C electrodes possessed lower impedance and higher charge …
Multiphase Identification In Ni-Pbte Contacts By Ebsd And Aberration-Corrected Stem, Xavier Reales Ferreres, Gilberto Casillas, Sima Aminorroaya-Yamini, Azdiar Adil Gazder
Multiphase Identification In Ni-Pbte Contacts By Ebsd And Aberration-Corrected Stem, Xavier Reales Ferreres, Gilberto Casillas, Sima Aminorroaya-Yamini, Azdiar Adil Gazder
Australian Institute for Innovative Materials - Papers
EBSD in combination with aberration-corrected STEM is used to study the interfacial layer forming at Ni electrode - PbTe thermoelectric material interfaces. Contrary to previous studies, both orthorhombic and monoclinic phases are identified within the interfacial layer. EBSD and STEM data at interphase boundaries demonstrate an approximately smooth transition from orthorhombic to monoclinic phase with almost no crystal defects due to the small differences in lattice parameters and the prevalence of one of two previously unknown orientation relationships between the phases. Moreover, the presence of special boundaries resulting in orientation domains within both phases throughout the interfacial nickel telluride layer …
Electrochemical And Optical Aspects Of Cobalt Meso-Carbazole Substituted Porphyrin Complexes, Katarzyna Laba, Mieczyslaw Lapkowski, David L. Officer, Pawel W. Wagner, Przemyslaw Data
Electrochemical And Optical Aspects Of Cobalt Meso-Carbazole Substituted Porphyrin Complexes, Katarzyna Laba, Mieczyslaw Lapkowski, David L. Officer, Pawel W. Wagner, Przemyslaw Data
Australian Institute for Innovative Materials - Papers
A series of cobalt (II) porphyrin complexes modified with carbazole rings at one or more meso positions of the macrocycle were synthesized and characterized as to their spectroscopic and basic electrochemical properties in non-aqueous media. The effect of the number and position (syn and anti) of carbazole groups on the complexes properties were investigated. The comparison was made to cobalt (II) porphyrin containing mesityl groups at the meso-positions. The relation between the site of redox processes in cobalt meso-carbazole substituted porphyrins were analysed. It was shown that the conjugated π-ring system of the porphyrin macrocycle, the cobalt central metal ion …
Carboxybetaine Functionalized Nanosilicas As Protein Resistant Surface Coatings, Brianna Knowles, Pawel W. Wagner, Shane A. Maclaughlin, Michael J. Higgins, Paul J. Molino
Carboxybetaine Functionalized Nanosilicas As Protein Resistant Surface Coatings, Brianna Knowles, Pawel W. Wagner, Shane A. Maclaughlin, Michael J. Higgins, Paul J. Molino
Australian Institute for Innovative Materials - Papers
Materials with protein resistant properties are increasingly sought after for their potential application as low-fouling surface coatings. Hydrophilic coatings with improved resistance to protein fouling have been prepared from zwitterionic carboxybetaine (CB) functionalized silica nanoparticles (SiNPs). The authors report three methods of coating preparation via direct tethering of CB to predeposited particle films, a two-step surface functionalization process, and deposition of CB functionalized particle dispersions. The pH at which aqueous CB solutions were prepared and reacted to SiNPs was found to drastically influence the mechanism of CB attachment and affect the protein resistance of the resultant coatings. Depending on the …
Effects Of Boron Content On Microstructure And Wear Properties Of Fecocrnibx High-Entropy Alloy Coating By Laser Cladding, Dezheng Liu, Jing Zhao, Yan Li, Wenli Zhu, Liangxu Lin
Effects Of Boron Content On Microstructure And Wear Properties Of Fecocrnibx High-Entropy Alloy Coating By Laser Cladding, Dezheng Liu, Jing Zhao, Yan Li, Wenli Zhu, Liangxu Lin
Australian Institute for Innovative Materials - Papers
The FeCoCrNiBx high-entropy alloy (HEA) coatings with three different boron (B) contents were synthesized on Q245R steel (American grade: SA515 Gr60) by laser cladding deposition technology. Effects of B content on the microstructure and wear properties of FeCoCrNiBx HEA coating were investigated. In this study, the phase composition, microstructure, micro-hardness, and wear resistance (rolling friction) were investigated by X-ray diffraction (XRD), a scanning electron microscope (SEM), a micro hardness tester, and a roller friction wear tester, respectively. The FeCoCrNiBx coatings exhibited a typical dendritic and interdendritic structure, and the microstructure was refined with the increase of B content. Additionally, the …
Ultrahigh Energy Storage Properties In (Sr0.7bi0.2)Tio3-Bi(Mg0.5zr0.5)O3 Lead-Free Ceramics And Potential For High-Temperature Capacitors, Xi Kong, Letao Yang, Zhenxiang Cheng, Shujun Zhang
Ultrahigh Energy Storage Properties In (Sr0.7bi0.2)Tio3-Bi(Mg0.5zr0.5)O3 Lead-Free Ceramics And Potential For High-Temperature Capacitors, Xi Kong, Letao Yang, Zhenxiang Cheng, Shujun Zhang
Australian Institute for Innovative Materials - Papers
2020 by the authors. Due to the enhanced demand for numerous electrical energy storage applications, including applications at elevated temperatures, dielectric capacitors with optimized energy storage properties have attracted extensive attention. In this study, a series of lead-free strontium bismuth titanate based relaxor ferroelectric ceramics have been successfully synthesized by high temperature solid-state reaction. The ultrahigh recoverable energy storage density of 4.2 J/cm3 under 380 kV/cm, with the high efficiency of 88%, was obtained in the sample with x = 0.06. Of particular importance is that this ceramic composition exhibits excellent energy storage performance over a wide work temperature up …
Flexible Lead-Free Bfo-Based Dielectric Capacitor With Large Energy Density, Superior Thermal Stability, And Reliable Bending Endurance, Chang Hong Yang, Jin Qian, Panpan Lv, Haitao Wu, Xiujuan Lin, Kun Wang, Jun Ouyang, Shifeng Huang, Xin Cheng, Zhenxiang Cheng
Flexible Lead-Free Bfo-Based Dielectric Capacitor With Large Energy Density, Superior Thermal Stability, And Reliable Bending Endurance, Chang Hong Yang, Jin Qian, Panpan Lv, Haitao Wu, Xiujuan Lin, Kun Wang, Jun Ouyang, Shifeng Huang, Xin Cheng, Zhenxiang Cheng
Australian Institute for Innovative Materials - Papers
As an essential energy-stored device, the inorganic dielectric film capacitor plays an irreplaceable role in high-energy pulse power technology area. In this work, propelled by the challenge of overcoming the bottlenecks of inflexibility and inferior energy storage density of the pure BiFeO3 films, the mica with high bendability and thermal stability is adopted as substrate, and the relaxor ferroelectric (Sr0.7Bi0.2)TiO3 is introduced to form solid solution to introduce relaxor behavior. The subsequently fabricated 0.3Bi(Fe0.95Mn0.05)O3-0.7(Sr0.7Bi0.2)TiO3 (BFMO-SBT) thin film capacitor exhibits a high recoverable energy storage density (Wrec = 61 J cm−3) and a high efficiency (η = 75%) combined with a …
Synthesis Of Hierarchical Sn/Sno Nanosheets Assembled By Carbon-Coated Hollow Nanospheres As Anode Materials For Lithium/Sodium Ion Batteries, Fengrong He, Qi Xu, Baoping Zheng, Jun Zhang, Zhenguo Wu, Yanjun Zhong, Yanxiao Chen, Wei Xiang, Benhe Zhong, Xiaodong Guo
Synthesis Of Hierarchical Sn/Sno Nanosheets Assembled By Carbon-Coated Hollow Nanospheres As Anode Materials For Lithium/Sodium Ion Batteries, Fengrong He, Qi Xu, Baoping Zheng, Jun Zhang, Zhenguo Wu, Yanjun Zhong, Yanxiao Chen, Wei Xiang, Benhe Zhong, Xiaodong Guo
Australian Institute for Innovative Materials - Papers
This journal is The Royal Society of Chemistry. Tin-based anode materials have aroused interest due to their high capacities. Nevertheless, the volume expansion problem during lithium insertion/extraction processes has severely hindered their practical application. In particular, nano-micro hierarchical structure is attractive with the integrated advantages of nano-effect and high thermal stability of the microstructure. Herein, hierarchical Sn/SnO nanosheets assembled by carbon-coated hollow nanospheres were successfully synthesized by a facile glucose-assisted hydrothermal method, in which the glucose served as both morphology-control agent and carbon source. The hierarchical Sn/SnO nanosheets exhibit excellent electrochemical performances owing to the unique configuration and carbon coating. …
Snell's Law For Spin Waves At A 90° Magnetic Domain Wall, Tomosato Hioki, Rei Tsuboi, Tom H. Johansen, Yusuke Hashimoto, Eiji Saitoh
Snell's Law For Spin Waves At A 90° Magnetic Domain Wall, Tomosato Hioki, Rei Tsuboi, Tom H. Johansen, Yusuke Hashimoto, Eiji Saitoh
Australian Institute for Innovative Materials - Papers
© 2020 Author(s). We report the experimental observation of the refraction and reflection of propagating magnetostatic spin waves crossing a 90° domain wall (DW). Time-resolved magneto-optical imaging was used to observe the propagation dynamics of magnetostatic spin waves. Due to the magnetization rotation across such a DW, the dispersion relation of magnetostatic spin waves rotates by 90°. This results in a change in the propagation dynamics of spin waves on both sides of the DW. We observed the refraction and reflection of magnetostatic spin waves at the DW and reveal their characteristics that include negative refraction. The incident-angle dependence of …
Stabilization Of Skyrmions In A Nanodisk Without An External Magnetic Field, Hang Li, Collins Akosa, Peng Yan, Yuanxu Wang, Zhenxiang Cheng
Stabilization Of Skyrmions In A Nanodisk Without An External Magnetic Field, Hang Li, Collins Akosa, Peng Yan, Yuanxu Wang, Zhenxiang Cheng
Australian Institute for Innovative Materials - Papers
We study, in the absence of a magnetic field, the stability of skyrmions in a disk-shaped ferromagnetic multilayer in the presence of locally pinned spins at the edge. This particular boundary condition suppresses the formation of helical states yet enhances the stabilization of states with rotational symmetry, such as Neél skyrmions. Numerical simulation shows that the size of the disk is a viable parameter to control the creation and annihilation of skyrmionic states. We also find that the demagnetization field renormalizes the Dzyaloshinskii-Moriya interaction. This study opens an alternative avenue to the generation, stabilization, and control of magnetic skyrmions in …
Synergistic Amplification Of (Photo)Catalytic Oxygen And Hydrogen Generation From Water By Thin-Film Polypyrrole Composites, Mohammed Alsultan, Jaecheol Choi, Rouhollah Jalili, Pawel W. Wagner, Gerhard F. Swiegers
Synergistic Amplification Of (Photo)Catalytic Oxygen And Hydrogen Generation From Water By Thin-Film Polypyrrole Composites, Mohammed Alsultan, Jaecheol Choi, Rouhollah Jalili, Pawel W. Wagner, Gerhard F. Swiegers
Australian Institute for Innovative Materials - Papers
© 2020 Elsevier B.V. Thin films of polypyrrole (PPy) containing nano-Ni ('nano-Ni’) (as catalyst) and reduced graphene oxide (rGO) (as conductor) have been studied as (photo)electrocatalysts of the oxygen (O2)-evolution reaction (OER) (at 0.8 V vs Ag/AgCl, in 0.2M Na2SO4, pH 12) and the hydrogen (H2)-evolution reaction (HER) (at -0.75 V vs Ag/AgCl, in 0.05M H2SO4/0.2M Na2SO4) under light illumination of 0.25 sun. The above conditions were the most favorable for O2/H2-evolution under which the PPy and/or the nano-Ni constituents were not degraded. The industry benchmark catalyst, bare Pt, generated 0.15 mA/cm2 for O2-evolution and 2.2 mA/cm2 for H2-evolution under …
Graphene Oxide–Based Nanomaterials: An Insight Into Retinal Prosthesis, Jia Yang, Zih Yu, Sheng Cheng, Johnson Chung, Xiao Liu, Chung Wu, Shien Lin, Guan Chen
Graphene Oxide–Based Nanomaterials: An Insight Into Retinal Prosthesis, Jia Yang, Zih Yu, Sheng Cheng, Johnson Chung, Xiao Liu, Chung Wu, Shien Lin, Guan Chen
Australian Institute for Innovative Materials - Papers
© 2020 by the authors. Licensee MDPI, Basel, Switzerland. Retinal prosthesis has recently emerged as a treatment strategy for retinopathies, providing excellent assistance in the treatment of age-related macular degeneration (AMD) and retinitis pigmentosa. The potential application of graphene oxide (GO), a highly biocompatible nanomaterial with superior physicochemical properties, in the fabrication of electrodes for retinal prosthesis, is reviewed in this article. This review integrates insights from biological medicine and nanotechnology, with electronic and electrical engineering technological breakthroughs, and aims to highlight innovative objectives in developing biomedical applications of retinal prosthesis.
Atomically Thin Superconductors, Zhi Li, Lina Sang, Peng Liu, Zengji Yue, Michael Fuhrer, Qikun Xue, Xiaolin Wang
Atomically Thin Superconductors, Zhi Li, Lina Sang, Peng Liu, Zengji Yue, Michael Fuhrer, Qikun Xue, Xiaolin Wang
Australian Institute for Innovative Materials - Papers
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim In recent years, atomically thin superconductors, including atomically thin elemental superconductors, single layer FeSe films, and few-layer cuprate superconductors, have been studied extensively. This hot research field is mainly driven by the discovery of significant superconductivity enhancement and high-temperature interface superconductivity in single-layer FeSe films epitaxially grown on SrTiO3 substrates in 2012. This study has attracted tremendous research interest and generated more studies focusing on further enhancing superconductivity and finding the origin of the superconductivity. A few years later, research on atomically thin superconductors has extended to cuprate superconductors, unveiling many …
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 …
Ferroelectrically Tunable Magnetism In Bifeo3/Batio3 Heterostructure Revealed By The First-Principles Calculations, Wenxuan Wang, Wei Sun, Guangbiao Zhang, Fengzhu Ren, Yuanxu Wang, Caiyin You, Zhenxiang Cheng
Ferroelectrically Tunable Magnetism In Bifeo3/Batio3 Heterostructure Revealed By The First-Principles Calculations, Wenxuan Wang, Wei Sun, Guangbiao Zhang, Fengzhu Ren, Yuanxu Wang, Caiyin You, Zhenxiang Cheng
Australian Institute for Innovative Materials - Papers
© 2020 The perovskite oxide interface has attracted extensive attention as a platform for achieving strong coupling between ferroelectricity and magnetism. In this work, robust control of magnetoelectric (ME) coupling in the BiFeO3/BaTiO3 (BFO/BTO) heterostructure (HS) was revealed by using the first-principles calculation. Switching of the ferroelectric polarization of BTO induce large ME effect with significant changes on the magnetic ordering and easy magnetization axis, making up for the weak ME coupling effect of single-phase multiferroic BFO. In addition, the Dzyaloshinskii-Moriya interaction (DMI) and the exchange coupling constants J for the BFO part of the HSs are simultaneously manipulated by …
Heterostructured Mo2c–Moo2 As Highly Efficient Catalyst For Rechargeable Li–O2 Battery, Chang Wu, Yuyang Hou, Jicheng Jiang, Haipeng Guo, Hua-Kun Liu, Jun Chen, Jiazhao Wang
Heterostructured Mo2c–Moo2 As Highly Efficient Catalyst For Rechargeable Li–O2 Battery, Chang Wu, Yuyang Hou, Jicheng Jiang, Haipeng Guo, Hua-Kun Liu, Jun Chen, Jiazhao Wang
Australian Institute for Innovative Materials - Papers
© 2020 Elsevier B.V. Li–O2 batteries has been widely investigated for its ultra-high capacity as next generation batteries. Nevertheless, some problems like sluggish kinetic reaction and instability hugely impede the practical use of Li–O2 batteries. In this work, Mo2C/MoO2@RGO heterostructures was fabricated by in-situ growth of Mo2C between MoO2 and RGO during calcination and being employed as cathode to explore the synergistic effect in Li–O2 batteries. As a result, Mo2C/MoO2@RGO exhibits good specific capacity with 2365 mAh g−1, high round-trip efficiency (89% at first cycle) and improved cycling performance. Density functional theory calculations indicated that the Mo2C/MoO2@RGO heterostructures have better …
Confning Tio2 Nanotubes In Pecvd‑Enabled Graphene Capsules Toward Ultrafast K‑Ion Storage: In Situ Tem/Xrd Study And Dft Analysis, Jingsheng Cai, Ran Cai, Zhongti Sun, Xiangguo Wang, Nan Wei, Feng Xu, Yuanlong Shao, Peng Gao, Shi Xue Dou, Jingyu Sun
Confning Tio2 Nanotubes In Pecvd‑Enabled Graphene Capsules Toward Ultrafast K‑Ion Storage: In Situ Tem/Xrd Study And Dft Analysis, Jingsheng Cai, Ran Cai, Zhongti Sun, Xiangguo Wang, Nan Wei, Feng Xu, Yuanlong Shao, Peng Gao, Shi Xue Dou, Jingyu Sun
Australian Institute for Innovative Materials - Papers
© 2020, © 2020, The Author(s). Titanium dioxide (TiO2) has gained burgeoning attention for potassium-ion storage because of its large theoretical capacity, wide availability, and environmental benignity. Nevertheless, the inherently poor conductivity gives rise to its sluggish reaction kinetics and inferior rate capability. Here, we report the direct graphene growth over TiO2 nanotubes by virtue of chemical vapor deposition. Such conformal graphene coatings effectively enhance the conductive environment and well accommodate the volume change of TiO2 upon potassiation/depotassiation. When paired with an activated carbon cathode, the graphene-armored TiO2 nanotubes allow the potassium-ion hybrid capacitor full cells to harvest an energy/power …
An In-Depth Study Of Zn Metal Surface Chemistry For Advanced Aqueous Zn-Ion Batteries, Junnan Hao, Bo Li, Xiaolong Li, Xiaohui Zeng, Shilin Zhang, Fuhua Yang, Sailin Liu, Dan Li, Chao Wu, Zaiping Guo
An In-Depth Study Of Zn Metal Surface Chemistry For Advanced Aqueous Zn-Ion Batteries, Junnan Hao, Bo Li, Xiaolong Li, Xiaohui Zeng, Shilin Zhang, Fuhua Yang, Sailin Liu, Dan Li, Chao Wu, Zaiping Guo
Australian Institute for Innovative Materials - Papers
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Although Zn metal has been regarded as the most promising anode for aqueous batteries, it persistently suffers from serious side reactions and dendrite growth in mild electrolyte. Spontaneous Zn corrosion and hydrogen evolution damage the shelf life and calendar life of Zn-based batteries, severely affecting their industrial applications. Herein, a robust and homogeneous ZnS interphase is built in situ on the Zn surface by a vapor–solid strategy to enhance Zn reversibility. The thickness of the ZnS film is controlled via the treatment temperature, and the performance of the protected Zn electrode …
Diffused Morphotropic Phase Boundary In Relaxor-Pbtio3crystals: High Piezoelectricity With Improved Thermal Stability, Gang Liu, Lingping Kong, Qingyang Hu, Shujun Zhang
Diffused Morphotropic Phase Boundary In Relaxor-Pbtio3crystals: High Piezoelectricity With Improved Thermal Stability, Gang Liu, Lingping Kong, Qingyang Hu, Shujun Zhang
Australian Institute for Innovative Materials - Papers
© 2020 Author(s). Solid solution ferroelectrics are the most widely used piezoelectric material for numerous electromechanical applications, including sensors, actuators, and transducers. A milestone in ferroelectric research is the discovery of the morphotropic phase boundary that was first reported in Pb(ZrxTi1-x)O3, which has been extensively solicited to improve the performance of various solid solution ferroelectrics, including those having the highest piezoelectricity known today. However, due to the inherent correlation between phase transition and thermodynamic imbalance, the efforts of building the phase boundary encounter the challenge that high performance materials are generally accompanied by property instability. Here, we report a comprehensive …
Unveiling The Ferrielectric Nature Of Pbzro3-Based Antiferroelectric Materials, Zhengqian Fu, Xuefeng Chen, Zhenqin Li, Tengfei Hu, Linlin Zhang, Ping Lu, Shujun Zhang, Genshui Wang, Xianlin Dong, Fangfang Xu
Unveiling The Ferrielectric Nature Of Pbzro3-Based Antiferroelectric Materials, Zhengqian Fu, Xuefeng Chen, Zhenqin Li, Tengfei Hu, Linlin Zhang, Ping Lu, Shujun Zhang, Genshui Wang, Xianlin Dong, Fangfang Xu
Australian Institute for Innovative Materials - Papers
© 2020, The Author(s). Benefitting from the reversible phase transition between antiferroelectric and ferroelectric states, antiferroelectric materials have recently received widespread attentions for energy storage applications. Antiferroelectric configuration with specific antiparallel dipoles has been used to establish antiferroelectric theories and understand its characteristic behaviors. Here, we report that the so-called antiferroelectric (Pb,La)(Zr,Sn,Ti)O3 system is actually ferrielectric in nature. We demonstrate different ferrielectric configurations, which consists of ferroelectric ordering segments with either magnitude or angle modulation of dipoles. The ferrielectric configurations are mainly contributed from the coupling between A-cations and O-anions, and their displacement behavior is dependent largely on the chemical …
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.
Design, Modeling And Control Of A 3d Printed Monolithic Soft Robotic Finger With Embedded Pneumatic Sensing Chambers, Charbel Tawk, Hao Zhou, Emre Sariyildiz, Marc In Het Panhuis, Geoffrey M. Spinks, Gursel Alici
Design, Modeling And Control Of A 3d Printed Monolithic Soft Robotic Finger With Embedded Pneumatic Sensing Chambers, Charbel Tawk, Hao Zhou, Emre Sariyildiz, Marc In Het Panhuis, Geoffrey M. Spinks, Gursel Alici
Australian Institute for Innovative Materials - Papers
IEEE This paper presents a directly 3D printed soft monolithic robotic finger with embedded soft pneumatic sensing chambers (PSC) as position and touch sensors. The monolithic finger was fabricated using a low-cost and open-source fused deposition modeling (FDM) 3D printer that employs an off-the-shelf soft and flexible commercially available thermoplastic polyurethane (TPU). A single soft hinge with an embedded PSC was optimized using finite element modeling (FEM) and a hyperelastic material model to obtain a linear relationship between the internal change in the volume of its PSC and the corresponding input mechanical modality, to minimize its bending stiffness and to …
Artificial Muscles From Hybrid Carbon Nanotube-Polypyrrole-Coated Twisted And Coiled Yarns, Shazed Aziz, Jose Martinez, Javad Foroughi, Geoffrey M. Spinks, Edwin W. Jager
Artificial Muscles From Hybrid Carbon Nanotube-Polypyrrole-Coated Twisted And Coiled Yarns, Shazed Aziz, Jose Martinez, Javad Foroughi, Geoffrey M. Spinks, Edwin W. Jager
Australian Institute for Innovative Materials - Papers
Electrochemically or electrothermally driven twisted/coiled carbon nanotube (CNT) yarn actuators are interesting artificial muscles for wearables as they can sustain high stress. However, due to high fabrication costs, these yarns have limited their application in smart textiles. An alternative approach is to use off-the-shelf yarns and coat them with conductive polymers that deliver high actuation properties. Here, novel hybrid textile yarns are demonstrated that combine CNT and an electroactive polypyrrole coating to provide both high strength and good actuation properties. CNT-coated polyester yarns are twisted and coiled and subjected to electrochemical coating of polypyrrole to obtain the hierarchical soft actuators. …
Highly Ordered Macroporous Dual-Element-Doped Carbon From Metal-Organic Frameworks For Catalyzing Oxygen Reduction, Wei Xia, Michelle Hunter, Jiayu Wang, Guoxun Zhu, Sarah Warren, Yingji Zhao, Yoshio Bando, Debra Searles, Yusuke Yamauchi, Jing Tang
Highly Ordered Macroporous Dual-Element-Doped Carbon From Metal-Organic Frameworks For Catalyzing Oxygen Reduction, Wei Xia, Michelle Hunter, Jiayu Wang, Guoxun Zhu, Sarah Warren, Yingji Zhao, Yoshio Bando, Debra Searles, Yusuke Yamauchi, Jing Tang
Australian Institute for Innovative Materials - Papers
© The Royal Society of Chemistry 2020. Multiple heteroatom-doped carbons with 3D ordered macro/meso-microporous structures have not been realized by simple carbonization of metal-organic frameworks (MOFs). Herein, ordered macroporous phosphorus- and nitrogen-doped carbon (M-PNC) is prepared successfully by carbonization of double-solvent-induced MOF/polystyrene sphere (PS) precursors accompanied with spontaneous removal of the PS template, followed by post-doping. M-PNC shows a high specific surface area of 837 m2g−1, nitrogen doping of 3.17 at%, and phosphorus doping of 1.12 at%. Thanks to the hierarchical structure, high specific surface area, and multiple heteroatom-doping, M-PNC exhibits unusual catalytic activity as an electrocatalyst for the oxygen …
Anisotropic And Extreme Magnetoresistance In The Magnetic Semimetal Candidate Erbium Monobismuthide, L Fan, F Tang, W Meng, W Zhao, L Zhang, Z Han, Bo Qian, X Jiang, X M. Zhang, Y Fang
Anisotropic And Extreme Magnetoresistance In The Magnetic Semimetal Candidate Erbium Monobismuthide, L Fan, F Tang, W Meng, W Zhao, L Zhang, Z Han, Bo Qian, X Jiang, X M. Zhang, Y Fang
Australian Institute for Innovative Materials - Papers
Rare-earth monopnictides display rich physical behaviors, featuring most notably spin and orbital orders in their ground state. Here, we grow ErBi single crystal and study its magnetic, thermal, and electrical properties. An analysis of the magnetic entropy and magnetization indicates that the weak magnetic anisotropy in ErBi possibly derives from the mixing effect, namely the anisotropic ground state of Er3+(4f11) mingles with the isotropic excited state through exchange interaction. At low temperature, an extremely large magnetoresistance (∼104%) with a parabolic magnetic-field dependence is observed, which can be ascribed to the nearly perfect electron-hole compensation and ultrahigh carrier mobility. When the …
Local Electronic And Magnetic Properties Of The Doped Topological Insulators Bi2se3:Ca And Bi2te3:Mn Investigated Using Ion-Implanted 8li Β−Nmr, Ryan M. L. Mcfadden, Aris Chatzichristos, David L. Cortie, Derek Fujimoto, Yew San Hor, Huiwen Ji, Victoria L. Karner, Robert F. Kiefl, C. D. Philip Levy, Ruohong Li, Iain Mckenzie, Gerald D. Morris, Matthew R. Pearson, Monika Stachura, Robert J. Cava, W Andrew Macfarlane
Local Electronic And Magnetic Properties Of The Doped Topological Insulators Bi2se3:Ca And Bi2te3:Mn Investigated Using Ion-Implanted 8li Β−Nmr, Ryan M. L. Mcfadden, Aris Chatzichristos, David L. Cortie, Derek Fujimoto, Yew San Hor, Huiwen Ji, Victoria L. Karner, Robert F. Kiefl, C. D. Philip Levy, Ruohong Li, Iain Mckenzie, Gerald D. Morris, Matthew R. Pearson, Monika Stachura, Robert J. Cava, W Andrew Macfarlane
Australian Institute for Innovative Materials - Papers
We report β−NMR measurements in Bi2Se3:Ca and Bi2Te3:Mn single crystals using 8Li+ implanted to depths on the order of 100 nm. Above ∼200K, spin-lattice relaxation reveals diffusion of 8Li+, with activation energies of ∼0.4eV (∼0.2eV) in Bi2Se3:Ca (Bi2Te3:Mn). At lower temperatures, the NMR properties are those of a heavily doped semiconductor in the metallic limit, with Korringa relaxation and a small, negative, temperature-dependent Knight shift in Bi2Se3:Ca. From this, we make a detailed comparison with the isostructural tetradymite Bi2Te2Se [McFadden et al., Phys. Rev. B 99, 125201 (2019)]. In the magnetic Bi2Te3:Mn, the effects of the dilute Mn moments predominate, …
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 …