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Articles 631 - 660 of 1524
Full-Text Articles in Physical Sciences and Mathematics
Polarized Raman Backscattering Selection Rules For (Hhl)-Oriented Diamond- And Zincblende-Type Crystals, Julian Steele, P Puech, Roger A. Lewis
Polarized Raman Backscattering Selection Rules For (Hhl)-Oriented Diamond- And Zincblende-Type Crystals, Julian Steele, P Puech, Roger A. Lewis
Australian Institute for Innovative Materials - Papers
Due to their interesting orientation-dependent properties, the ability to grow high-index semiconductor crystals and nanostructures extends the design palette for applications based on these materials. Notably, a source containing a systematic reporting of what the Raman tensors are for an arbitrary high-index zincblende material is yet to appear in the literature. Herein, we present the polarized Raman backscattering selection rules for arbitrary (hhl)-oriented diamond- and zincblende-type crystal surfaces and verify their correctness through experiment (up to (115)). Considering the many degrees of freedom available to common polarized micro-Raman scattering instruments, and the unique local orientation of the probed material, we …
Magnetocaloric Effect In Homn2si2 Compound With Multiple Magnetic Phase Transitions, J C. Debnath, Jian Li Wang
Magnetocaloric Effect In Homn2si2 Compound With Multiple Magnetic Phase Transitions, J C. Debnath, Jian Li Wang
Australian Institute for Innovative Materials - Papers
The structural, magnetic and magnetocaloric properties of the polycrystalline compound HoMn2Si2 have been studied. The temperature variation of magnetization and heat capacity show that below room temperature the compound under goes multiple magnetic transitions, at about 80, 15 and 3.5 K respectively. Moreover, the presence of the interesting thermomagnetic irreversibility in HoMn2Si2 is detected in the magnetization versus temperature plot, which can be ascribed to the narrow domain wall pinning effect. A broad and asymmetric peak is observed for the MCE response which might suggest the underlying first-order nature of the transition and/or the spin fluctuations of the Mn subsystem. …
Switching Of Both Local Ferroelectric And Magnetic Domains In Multiferroic Bi 0.9 La0.1 Feo3 Thin Film By Mechanical Force, Tingting Jia, Hideo Kimura, Zhenxiang Cheng, Hongyang Zhao
Switching Of Both Local Ferroelectric And Magnetic Domains In Multiferroic Bi 0.9 La0.1 Feo3 Thin Film By Mechanical Force, Tingting Jia, Hideo Kimura, Zhenxiang Cheng, Hongyang Zhao
Australian Institute for Innovative Materials - Papers
Cross-coupling of ordering parameters in multiferroic materials by multiple external stimuli other than electric field and magnetic field is highly desirable from both practical application and fundamental study points of view. Recently, mechanical force has attracted great attention in switching of ferroic ordering parameters via electro-elastic coupling in ferroelectric materials. In this work, mechanical force induced both polarization and magnetization switching were visualized in a polycrystalline multiferroic Bi0.9La0.1FeO3 thin film using a scanning probe microscopy system. The piezoresponse force microscopy and magnetic force microscopy responses suggest that both the ferroelectric domains and the magnetic domains in Bi0.9La0.1FeO3 film could be …
Defect Graphene As A Trifunctional Catalyst For Electrochemical Reactions, Yi Jia, Longzhou Zhang, Aijun Du, Guoping Gao, Jun Chen, Xuecheng Yan, Christopher L. Brown, Xiangdong Yao
Defect Graphene As A Trifunctional Catalyst For Electrochemical Reactions, Yi Jia, Longzhou Zhang, Aijun Du, Guoping Gao, Jun Chen, Xuecheng Yan, Christopher L. Brown, Xiangdong Yao
Australian Institute for Innovative Materials - Papers
The defects derived by the removal of heteroatoms from graphene have been demonstrated, both experimentally and theoretically, to be effective for all three basic electrochemical reactions, e.g., oxygen reduction (ORR), oxygen evolution (OER), hydrogen evolution (HER). Density function theory calculations further reveal that the different types of defects are essential for the individual electrocatalytic activity for ORR, OER, and HER, respectively.
Smart Fabrics And Networked Clothing: Recent Developments In Cnt-Based Fibers And Their Continual Refinement, Javad Foroughi, Teodor E. Mitew, Philip O. Ogunbona, Raad Raad, Farzad Safaei
Smart Fabrics And Networked Clothing: Recent Developments In Cnt-Based Fibers And Their Continual Refinement, Javad Foroughi, Teodor E. Mitew, Philip O. Ogunbona, Raad Raad, Farzad Safaei
Australian Institute for Innovative Materials - Papers
Virtually all human cultures routinely wear garments or some sort of attire, both for protection against the elements and as part of a complex social display of everything from class status to gender to the act of belonging to a particular subculture. Smart garments, in addition to performing their social functions, can act as transmitters, sensors, or energy-harvesting entities. Furthermore, such garments may also possess some processing capability, enabling them to perform a variety of tasks, perhaps in conjunction with cloud-based server resources.
Mechanical Force Involved Multiple Fields Switching Of Both Local Ferroelectric And Magnetic Domain In A Bi5ti3feo15 Thin Film, Tingting Jia, Hideo Kimura, Zhenxiang Cheng, Hongyang Zhao, Yoon-Hyun Kim, Minoru Osada, Takao Matsumoto, Naoya Shibata, Yuichi Ikuhara
Mechanical Force Involved Multiple Fields Switching Of Both Local Ferroelectric And Magnetic Domain In A Bi5ti3feo15 Thin Film, Tingting Jia, Hideo Kimura, Zhenxiang Cheng, Hongyang Zhao, Yoon-Hyun Kim, Minoru Osada, Takao Matsumoto, Naoya Shibata, Yuichi Ikuhara
Australian Institute for Innovative Materials - Papers
Multiferroics have received intense attention due to their great application potential in multi-state information storage devices and new types of sensors. Coupling among ferroic orders such as ferroelectricity, (anti-)ferromagnetism, ferroelasticity, etc. will enable dynamic interaction between these ordering parameters. Direct visualization of such coupling behaviour in single phase multiferroic materials is highly desirable for both applications and fundamental study. Manipulation of both ferroelectric and magnetic domains of Bi5Ti3FeO15 thin film using electric field and external mechanical force is reported, which confirms the magnetoelectric coupling in Bi5Ti3FeO15, indicates the electric and magnetic orders are coupled through ferroelasticity. Due to the anisotropic …
Si-Containing Precursors For Si-Based Anode Materials Of Li-Ion Batteries: A Review, Lei Zhang, Xiaoxiao Liu, Qianjin Zhao, Shi Xue Dou, Hua-Kun Liu, Yunhui Huang, Xianluo Hu
Si-Containing Precursors For Si-Based Anode Materials Of Li-Ion Batteries: A Review, Lei Zhang, Xiaoxiao Liu, Qianjin Zhao, Shi Xue Dou, Hua-Kun Liu, Yunhui Huang, Xianluo Hu
Australian Institute for Innovative Materials - Papers
Lithium-ion batteries with high energy density are in demand for consumer electronics, electric vehicles, and grid-scale stationary energy storage. Si is one of the most promising anode materials due to its extremely high specific capacity. However, the full application of Si-based anode materials is limited by poor cycle life and rate capability resulted from low ionic/electronic conductivity and large volume change over cycling. In recent years, great progress has been made in improving the performance of Si anodes by employing nanotechnology. The preparation methods are essentially important, in which the precursors used are crucial to design and control the microstructure …
Seed Mediated One-Pot Growth Of Versatile Heterogeneous Upconversion Nanocrystals For Multimodal Bioimaging, Shihui Wen, Du Li, Deming Liu, Xiaoxue Xu, Yi Du, David R. G Mitchell, Bingyang Shi, Xiangyang Shi, Dayong Jin
Seed Mediated One-Pot Growth Of Versatile Heterogeneous Upconversion Nanocrystals For Multimodal Bioimaging, Shihui Wen, Du Li, Deming Liu, Xiaoxue Xu, Yi Du, David R. G Mitchell, Bingyang Shi, Xiangyang Shi, Dayong Jin
Australian Institute for Innovative Materials - Papers
The rapid development of a variety of molecular contrast agents makes the multimodality bioimaging highly attractive towards higher resolution, more sensitive, informative diagnosis. The key lies in the development of facile material synthesis that allows the integration of multiple contrast agents, ideally in a way that each of the components should be logically assembled to maximize their performances. Here, we report the one-pot programmable growth of multifunctional heterogeneous nanocrystal with tunable size, shape, composition, and properties. We demonstrated a facile one-pot hot-injection method to enable the highly selectively controlled growth of different sodium lanthanide fluoride nanomaterials in either longitudinal or …
Expeditious And Eco-Friendly Hydrothermal Polymerization Of Pedot Nanoparticles For Binderfree High Performance Supercapacitor Electrodes, Murugesan Rajesh, C Justin Raj, Byung Chul Kim, Ramu Manikandan, Sung Jin Kim, Sang-Yeup Prof Sang-Yeup Park, Kwangsoo Lee, Kook Hyun Yu
Expeditious And Eco-Friendly Hydrothermal Polymerization Of Pedot Nanoparticles For Binderfree High Performance Supercapacitor Electrodes, Murugesan Rajesh, C Justin Raj, Byung Chul Kim, Ramu Manikandan, Sung Jin Kim, Sang-Yeup Prof Sang-Yeup Park, Kwangsoo Lee, Kook Hyun Yu
Australian Institute for Innovative Materials - Papers
Poly(3,4-ethylenedioxythiophene) (PEDOT) is a promising conjugated polymer that has attracted attention because of its outstanding electronic properties, useful for a wide range of applications in energy storage devices. However, synthesis of high-quality PEDOT occurs via vapour phase polymerization and chemical vapour deposition techniques using extrinsic hard templates or complicated experimental setups. This study introduces a simple hydrothermal polymerization technique using ferric chloride (FeCl3) as an oxidizing agent to overcome the above drawback, which results in good conductive, crystalline PEDOT nanodendrites and nanospheres. The effects of varying the molar ratio of FeCl3 oxidant were investigated in terms of the structural, morphological …
Studies Of Poly(3,4-Ethylenedioxythiophene) (Pedot) Films Containing Cationic Mn Porphyrins. A Loading-Dependent Demetalation Of Mn(Iii)Tpp In Pedot (Mn(Iii)Tpp=5,10,15,20-Tetraphenylporphyrinato Manganese(Iii)), Danijel Boskovic, Sivakumar Balakrishnan, Jun Chen, Pawel W. Wagner, Gerhard F. Swiegers
Studies Of Poly(3,4-Ethylenedioxythiophene) (Pedot) Films Containing Cationic Mn Porphyrins. A Loading-Dependent Demetalation Of Mn(Iii)Tpp In Pedot (Mn(Iii)Tpp=5,10,15,20-Tetraphenylporphyrinato Manganese(Iii)), Danijel Boskovic, Sivakumar Balakrishnan, Jun Chen, Pawel W. Wagner, Gerhard F. Swiegers
Australian Institute for Innovative Materials - Papers
Thin films of vapor-phase polymerized PEDOT incorporating various cationic Mn porphyrins were assessed for water oxidation catalysis under light illumination. Only Mn(III)TPP/PEDOT displayed a notable photocurrent and this was, counter-intuitively, greatest at the lowest loading levels examined. Studies revealed that a proportion of the Mn(III)TPP within the PEDOT became demetalated during polymerization, leaving free and protonated TPP. Despite the presence of an excess of chemical oxidant during the polymerization step, the Mn(III) ion was reduced - likely under the influence of light - to Mn(II), which was labilized out of the film. Whereas PEDOT films loaded with anionic Mn porphyrins …
Facile Fabrication Of Flexible Microsupercapacitor With High Energy Density, Yuqing Liu, Bo Weng, Qun Xu, Yuyang Hou, Chen Zhao, Stephen T. Beirne, Kewei Shu, Rouhollah Jalili, Gordon G. Wallace, Joselito M. Razal, Jun Chen
Facile Fabrication Of Flexible Microsupercapacitor With High Energy Density, Yuqing Liu, Bo Weng, Qun Xu, Yuyang Hou, Chen Zhao, Stephen T. Beirne, Kewei Shu, Rouhollah Jalili, Gordon G. Wallace, Joselito M. Razal, Jun Chen
Australian Institute for Innovative Materials - Papers
Flexible microsupercapacitors (fMSCs) with interdigitated electrode design are a promising platform as a power source or energy storage unit for wearable microelectronics. In this work, a facile fabrication of all-solid-state fMSCs is reported through a combination of simple technologies including bar coating and laser etching, to generate the interdigitated patterned electrodes. These novel fMSC devices made with interdigitated patterned electrodes can deliver outstanding areal capacitance (84.7 mF cm−2 at 5 mV s−1 and 45.5 mF cm−2 at 200 mV−1), high volumetric capacitance (14.5 F cm−3 at 5 mV s−1 and 7.83 F cm−3 at 200 mV−1), and high cycling stability …
Oxygen-Free Layer-By-Layer Assembly Of Lithiated Composites On Graphene For Advanced Hydrogen Storage, Guanglin Xia, Yingbin Tan, Xiaowei Chen, Fang Fang, Dalin Sun, Xingguo Li, Zaiping Guo, Xuebin Yu
Oxygen-Free Layer-By-Layer Assembly Of Lithiated Composites On Graphene For Advanced Hydrogen Storage, Guanglin Xia, Yingbin Tan, Xiaowei Chen, Fang Fang, Dalin Sun, Xingguo Li, Zaiping Guo, Xuebin Yu
Australian Institute for Innovative Materials - Papers
A facile hydrogenation-induced self-assembly strategy to synthesize lithium hydride (LiH) nanosheets with a thickness of 2 nm that are uniformly distributed on graphene is reported and designed. Taking advantage of LiH nanosheets with high reactivity and a homogeneous distribution on graphene support as a nanoreactor, the confined chemical synthesis of oxygen-free lithiated composites is effectively and efficiently realized.
Separation Of Organic Liquid Mixture By Flexible Nanofibrous Membranes With Precisely Tunable Wettability, Lanlan Hou, Li Wang, Nu Wang, Fengyun Guo, Jing Liu, Yuee Chen, Jingchong Liu, Yong Zhao, Lei Jiang
Separation Of Organic Liquid Mixture By Flexible Nanofibrous Membranes With Precisely Tunable Wettability, Lanlan Hou, Li Wang, Nu Wang, Fengyun Guo, Jing Liu, Yuee Chen, Jingchong Liu, Yong Zhao, Lei Jiang
Australian Institute for Innovative Materials - Papers
Separation of liquid mixtures, especially organic liquid mixtures, is widely used in industrial processes but still faces challenges with respect to separation in a high-efficiency, low-energy mode. In this work, we report a flexible wettability-tunable nanofibrous membrane composed of a high-performance fluoro-polymer as the matrix and fluorosilane as a surface energy regulator that can be successfully applied in immiscible organic liquid mixture separation. The separation is achieved by tuning the surface energy of a membrane to a value between the surface tensions of two organic liquids. Moreover, for use in different mixed liquid systems, we programmatically designed nanofibrous membranes with …
Porosity Of Bleb Capsule Declines Rapidly With Fluid Challenge, Surinder Singh Pandav, Craig M. Ross, Faisal Thattaruthody, Ritambhra Nada, Nirbhai Singh, Natasha Gautam, Stephen T. Beirne, Gordon G. Wallace, Mark B. Sherwood, Jonathan G. Crowston, Michael Coote
Porosity Of Bleb Capsule Declines Rapidly With Fluid Challenge, Surinder Singh Pandav, Craig M. Ross, Faisal Thattaruthody, Ritambhra Nada, Nirbhai Singh, Natasha Gautam, Stephen T. Beirne, Gordon G. Wallace, Mark B. Sherwood, Jonathan G. Crowston, Michael Coote
Australian Institute for Innovative Materials - Papers
Introduction: The porosity of the fibrous capsule around a glaucoma drainage device (GDD) may be the most important functional attribute. The factors that determine capsular porosity are not well understood. Failed GDD surgeries are usually associated with thick impervious capsules and components of aqueous have been implicated in this process. Purpose: In this study, we interrogated the effect of passage of nonaqueous fluid on capsular porosity in mature (but aqueous naïve) blebs in a previously reported GDD model (the "Center for Eye Research Australia Implant"). Materials and methods: The study was performed at two centers using 17 New Zealand White …
Enhanced Simultaneous Detection Of Ractopamine And Salbutamol - Via Electrochemical-Facial Deposition Of Mno2 Nanoflowers Onto 3d Rgo/Ni Foam Templates, Mingyan Wang, Wei Zhu, Lin Ma, Juan Juan Ma, Dongen Zhang, Zhi Wei Tong, Jun Chen
Enhanced Simultaneous Detection Of Ractopamine And Salbutamol - Via Electrochemical-Facial Deposition Of Mno2 Nanoflowers Onto 3d Rgo/Ni Foam Templates, Mingyan Wang, Wei Zhu, Lin Ma, Juan Juan Ma, Dongen Zhang, Zhi Wei Tong, Jun Chen
Australian Institute for Innovative Materials - Papers
In this paper, we report a facile method to successfully fabricate MnO2 nanoflowers loaded onto 3D RGO@nickel foam, showing enhanced biosensing activity due to the improved structural integration of different electrode materials components. When the as-prepared 3D hybrid electrodes were investigated as a binder-free biosensor, two well-defined and separate differential pulse voltammetric peaks for ractopamine (RAC) and salbutamol (SAL) were observed, indicating the simultaneous selective detection of both β-agonists possible. The MnO2/RGO@NF sensor also demonstrated a linear relationship over a wide concentration range of 17nM to 962nM (R=0.9997) for RAC and 42nM to 1463nM (R=0.9996) for SAL, with the detection …
Evaluation Of Persistent-Mode Operation In A Superconducting Mgb2 Coil In Solid Nitrogen, Dipakkumar Patel, Md Shahriar Hossain, Khay Wai W. See, Wenbin Qiu, Hiroki Kobayashi, Zongqing Ma, Seong Jun Kim, Jonggi Hong, Jin Yong Park, Seyong Choi, Minoru Maeda, Mohammed Shahabuddin, Matthew A. Rindfleisch, Michael Tomsic, S X. Dou, Jung Ho Kim
Evaluation Of Persistent-Mode Operation In A Superconducting Mgb2 Coil In Solid Nitrogen, Dipakkumar Patel, Md Shahriar Hossain, Khay Wai W. See, Wenbin Qiu, Hiroki Kobayashi, Zongqing Ma, Seong Jun Kim, Jonggi Hong, Jin Yong Park, Seyong Choi, Minoru Maeda, Mohammed Shahabuddin, Matthew A. Rindfleisch, Michael Tomsic, S X. Dou, Jung Ho Kim
Australian Institute for Innovative Materials - Papers
We report the fabrication of a magnesium diboride (MgB2) coil and evaluate its persistent-mode operation in a system cooled by a cryocooler with solid nitrogen (SN2) as a cooling medium. The main purpose of SN2 was to increase enthalpy of the cold mass. For this work, an in situ processed carbon-doped MgB2 wire was used. The coil was wound on a stainless steel former in a single layer (22 turns), with an inner diameter of 109 mm and height of 20 mm without any insulation. The two ends of the coil were then joined to make a persistent-current switch to …
A Critical Review Of Electrochemical Noise Measurement As A Tool For Evaluation Of Organic Coatings, Seyed S. Jamali, Douglas J. Mills
A Critical Review Of Electrochemical Noise Measurement As A Tool For Evaluation Of Organic Coatings, Seyed S. Jamali, Douglas J. Mills
Australian Institute for Innovative Materials - Papers
The simplicity of measuring equipment and versatility of data analysis makes electrochemical noise measurement an ideal technique for acquiring electrochemical information about the corrosion behavior of a painted metal relatively quickly. Hence the method has great potential for use in the laboratory as well as in field situations. However, special care must be taken in choosing data acquisition parameters, reference electrodes and symmetry of electrodes in order to achieve reproducible measurements. These areas have been discussed in this review along with methods of data analysis, alternative electrode configurations for on-site measurements and novel applications of the technique.
A High Energy Density Solar Rechargeable Redox Battery, Mohammad Ali Mahmoudzadeh, Ashwin R. Usgaocar, Joseph Giorgio, David L. Officer, Gordon G. Wallace, John D. W Madden
A High Energy Density Solar Rechargeable Redox Battery, Mohammad Ali Mahmoudzadeh, Ashwin R. Usgaocar, Joseph Giorgio, David L. Officer, Gordon G. Wallace, John D. W Madden
Australian Institute for Innovative Materials - Papers
An integrated solar energy conversion and storage system is presented using a dye sensitized electrode in a redox battery structure. A stable discharge voltage is shown with high areal energy storage capacity of 180 W h cm-2 by choosing iodide/polysulfide as the pair of active materials matched with permeable porous electrodes. The solar rechargeable battery system offers a higher round-trip efficiency and potential cost savings on fabrication compared to individual devices.
Correlation Of Impedance And Effective Electrode Area Of Dextran Sulfate Doped Pedot Modified Electrodes, Alexander R. Harris, Robyn C. Hutchinson, Paul J. Molino, Robert M. I Kapsa, Graeme M. Clark, Antonio G. Paolini, Gordon G. Wallace
Correlation Of Impedance And Effective Electrode Area Of Dextran Sulfate Doped Pedot Modified Electrodes, Alexander R. Harris, Robyn C. Hutchinson, Paul J. Molino, Robert M. I Kapsa, Graeme M. Clark, Antonio G. Paolini, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
The impedance of electrodes at 1 kHz is typically reported to assess the signal-to-noise ratio of neural recording electrodes. The impedance response of platinum electrodes modified by poly-3,4-ethylenedioxythiophene doped with dextran sulfate has been examined. The modified electrodes have lower impedance at low and intermediate frequencies compared to unmodified electrodes. The impedance and phase angle at low frequencies is strongly correlated with the electrode area. The geometric and linear diffusion charge densities of the modified electrodes are also dependent on the electrode area and impedance at low frequencies. A 3 time constant equivalent circuit provided a better fit to the …
Mos2 With An Intercalation Reaction As A Long-Life Anode Material For Lithium Ion Batteries, Zhe Hu, Qiannan Liu, Weiyi Sun, Weijie Li, Zhanliang Tao, Shulei Chou, Jun Chen, S X. Dou
Mos2 With An Intercalation Reaction As A Long-Life Anode Material For Lithium Ion Batteries, Zhe Hu, Qiannan Liu, Weiyi Sun, Weijie Li, Zhanliang Tao, Shulei Chou, Jun Chen, S X. Dou
Australian Institute for Innovative Materials - Papers
MoS2 with expanded layers was synthesized and characterized as an anode material for lithium ion batteries in an ether-based electrolyte by cutting off the terminal discharge voltage at 1.0 V to prevent a MoS2 conversion reaction. The as-prepared MoS2 achieved 96% capacity retention even after 1400 cycles and showed good performance in a full cell with LiCoO2 as the counter electrode.
Comment On "Cycling Li-O2 Batteries Via Lioh Formation And Decomposition", Yue Shen, Wang Zhang, Shulei Chou, S X. Dou
Comment On "Cycling Li-O2 Batteries Via Lioh Formation And Decomposition", Yue Shen, Wang Zhang, Shulei Chou, S X. Dou
Australian Institute for Innovative Materials - Papers
Copyright 2016 by the American Association for the Advancement of Science; all rights reserved. Liu et al. (Research Article, 30 October 2015, p. 530) described a lithium-oxygen (Li-O2) battery based on lithium iodide (LiI)-assisted lithium hydroxide (LiOH) formation and decomposition.We argue that LiOH cannot be oxidized by triiodide (I3 -). The charge capacity is from the oxidation of I- instead of LiOH. The limited-capacity cycling test is misleading when the electrolyte contributes considerable parasitic reaction capacity.
An Improved Synthesis Of Unsolvated Nab3h8 And Its Application In Preparing Na2b12h12, Weidong Chen, Guotao Wu, Teng He, Zhao Li, Zaiping Guo, Hua-Kun Liu, Zhenguo Huang, Ping Chen
An Improved Synthesis Of Unsolvated Nab3h8 And Its Application In Preparing Na2b12h12, Weidong Chen, Guotao Wu, Teng He, Zhao Li, Zaiping Guo, Hua-Kun Liu, Zhenguo Huang, Ping Chen
Australian Institute for Innovative Materials - Papers
Octahydrotriborates are potential hydrogen storage materials and chemical vapor deposition precursors to boride films. Their syntheses have been quite challenging, however. In this paper, an improved facile route for the preparation of unsolvated sodium octahydrotriborate (NaB3H8), which is an important precursor to other octahydrotriborates and derivatives, is reported. The key steps in the synthesis involve dispersing Na finely in inert media and preparing fresh tetrahydrofuran (THF)·BH3 at room temperature. High purity unsolvated NaB3H8 can be obtained in tens of grams or more in one batch, depending on the reactor size. Using NaB3H8 as the precursor, sodium dodecaborate (Na2B12H12) has been …
High Pressure Polymorphs And Amorphization Of Upconversion Host Material Nay(Wo4)2, Fang Hong, Binbin Yue, Zhenxiang Cheng, Martin Kunz, Bin Chen, Ho-Kwang Mao
High Pressure Polymorphs And Amorphization Of Upconversion Host Material Nay(Wo4)2, Fang Hong, Binbin Yue, Zhenxiang Cheng, Martin Kunz, Bin Chen, Ho-Kwang Mao
Australian Institute for Innovative Materials - Papers
The pressure effect on the structural change of upconversion host material NaY(WO4)2 was studied by using in-situ synchrotron X-ray diffraction. A transition from the initial scheelite phase to the M-fergusonite phase occurs near 10 GPa, and another phase transition is found near 27.5 GPa, which could be an isostructural transition without symmetry change. The sample becomes amorphous when the pressure is fully released from high pressure. This work demonstrates the possibility of synthesizing various polymorph structures for non-linear optical applications with a high pressure, chemical doping, or strained thin-film nanostructure process.
Base Metal Co-Fired Multilayer Piezoelectrics, Lisheng Gao, Hanzheng Guo, Shujun Zhang, Clive A. Randall
Base Metal Co-Fired Multilayer Piezoelectrics, Lisheng Gao, Hanzheng Guo, Shujun Zhang, Clive A. Randall
Australian Institute for Innovative Materials - Papers
Piezoelectrics have been widely used in different kinds of applications, from the automobile industry to consumer electronics. The novel multilayer piezoelectrics, which are inspired by multilayer ceramic capacitors, not only minimize the size of the functional parts, but also maximize energy efficiency. Development of multilayer piezoelectric devices is at a significant crossroads on the way to achieving low costs, high efficiency, and excellent reliability. Concerning the costs of manufacturing multilayer piezoelectrics, the trend is to replace the costly noble metal internal electrodes with base metal materials. This paper discusses the materials development of metal co-firing and the progress of integrating …
Higher Order Plasmonic Modes Excited In Ag Triangular Nanoplates By An Electron Beam, Vicki J. Keast, C J. Walhout, T Pedersen, N Shahcheraghi, Michael Cortie, David R. G Mitchell
Higher Order Plasmonic Modes Excited In Ag Triangular Nanoplates By An Electron Beam, Vicki J. Keast, C J. Walhout, T Pedersen, N Shahcheraghi, Michael Cortie, David R. G Mitchell
Australian Institute for Innovative Materials - Papers
Ag triangular nanoplates are known to generate strong plasmonic resonances when excited by both light and electron beams. Experimental electron energy-loss spectra (EELS) and maps were acquired using an aberration-corrected JEOL-ARM microscope. The corner, edge and centre modes that are often observed in such structures were also observed in these measurements. In addition, novel higher order internal modes were observed and were found to be well reproduced by theoretical cal- culations using boundary element method (BEM). These modes are "dark modes" so are not observed in the optical extinction spectra. They are confined surface propagating modes and are analogous to …
Vibration Effect On Magnetization And Critical Current Density Of Superconductors, Igor A. Golovchanskiy, Alexey V. Pan, Jonathan George, Frederick Wells, Sergey Fedoseev, Anatoly B. Rosenfeld
Vibration Effect On Magnetization And Critical Current Density Of Superconductors, Igor A. Golovchanskiy, Alexey V. Pan, Jonathan George, Frederick Wells, Sergey Fedoseev, Anatoly B. Rosenfeld
Australian Institute for Innovative Materials - Papers
In this work the effect of vibrations on critical current density ( Jc) of superconductors has been studied. The vibrations are shown to affect Jc of all types of superconductors during their measurements, employing a vibrating sample magnetometer (VSM). Increasing vibration frequency ( f ) and/or amplitude (A) leads to progressive reduction of Jc as a function of magnetic field (Ba). The effect of vibrations is substantially stronger in thin films. It leads to development of unexpected kinks on Jc (Ba) curves. Analysis of magnetization loops and relaxation of magnetization in YBCO films revealed that the vibration effect can be …
Superior Sodium-Ion Storage Performance Of Co3o4@Nitrogen-Doped Carbon: Derived From A Metal–Organic Framework, Ying Wang, Caiyun Wang, Yijing Wang, Hua-Kun Liu, Zhenguo Huang
Superior Sodium-Ion Storage Performance Of Co3o4@Nitrogen-Doped Carbon: Derived From A Metal–Organic Framework, Ying Wang, Caiyun Wang, Yijing Wang, Hua-Kun Liu, Zhenguo Huang
Australian Institute for Innovative Materials - Papers
Nitrogen-doped carbon coated Co 3 O 4 nanoparticles (Co 3 O 4 @NC) with high Na-ion storage capacity and unprecedented long-life cycling stability are reported in this paper. The Co 3 O 4 @NC was derived from a metal – organic framework ZIF-67, where the Co ions and organic linkers were, respectively, converted to Co 3 O 4 nanoparticle cores and nitrogen-doped carbon shells through a controlled two-step annealing process. The Co 3 O 4 @NC shows a porous nature with a surface area of 101 m 2 g 1 . When applied as an anode for sodium ion batteries …
Surface Effects Of Vapour-Liquid-Solid Driven Bi Surface Droplets Formed During Molecular-Beam-Epitaxy Of Gaasbi, Julian Steele, Roger A. Lewis, Josip Horvat, Mitchell John Bromley Nancarrow, M Henini, Yu. I. Mazur, M. Schmidbauer, M. E. Ware, S. Q. Yu, G J. Salamo
Surface Effects Of Vapour-Liquid-Solid Driven Bi Surface Droplets Formed During Molecular-Beam-Epitaxy Of Gaasbi, Julian Steele, Roger A. Lewis, Josip Horvat, Mitchell John Bromley Nancarrow, M Henini, Yu. I. Mazur, M. Schmidbauer, M. E. Ware, S. Q. Yu, G J. Salamo
Australian Institute for Innovative Materials - Papers
Herein we investigate a (001)-oriented GaAs1−xBix/GaAs structure possessing Bi surface droplets capable of catalysing the formation of nanostructures during Bi-rich growth, through the vapourliquid-solid mechanism. Specifically, self-aligned "nanotracks" are found to exist trailing the Bi droplets on the sample surface. Through cross-sectional high-resolution transmission electron microscopy the nanotracks are revealed to in fact be elevated above surface by the formation of a subsurface planar nanowire, a structure initiated mid-way through the molecular-beam-epitaxy growth and embedded into the epilayer, via epitaxial overgrowth. Electron microscopy studies also yield the morphological, structural, and chemical properties of the nanostructures. Through a combination of Bi …
Quasi-Freestanding Epitaxial Silicene On Ag(111) By Oxygen Intercalation, Yi Du, Jincheng Zhuang, Jiaou Wang, Zhi Li, Hongsheng Liu, Jijun Zhao, Xun Xu, Haifeng Feng, Lan Chen, Kehui Wu, Xiaolin Wang, S X. Dou
Quasi-Freestanding Epitaxial Silicene On Ag(111) By Oxygen Intercalation, Yi Du, Jincheng Zhuang, Jiaou Wang, Zhi Li, Hongsheng Liu, Jijun Zhao, Xun Xu, Haifeng Feng, Lan Chen, Kehui Wu, Xiaolin Wang, S X. Dou
Australian Institute for Innovative Materials - Papers
Silicene is a monolayer allotrope of silicon atoms arranged in a honeycomb structure with massless Dirac fermion characteristics similar to graphene. It merits development of silicon-based multifunctional nanoelectronic and spintronic devices operated at room temperature because of strong spin-orbit coupling. Nevertheless, until now, silicene could only be epitaxially grown on conductive substrates. The strong silicene-substrate interaction may depress its superior electronic properties. We report a quasi-freestanding silicene layer that has been successfully obtained through oxidization of bilayer silicene on the Ag(111) surface. The oxygen atoms intercalate into the underlayer of silicene, resulting in isolation of the top layer of silicene …
Cell Compatible Encapsulation Of Filaments Into 3d Hydrogels, Katharina Schirmer, Robert A. Gorkin Iii, Stephen T. Beirne, Elise M. Stewart, Brianna C. Thompson, Anita F. Quigley, Robert M. I Kapsa, Gordon G. Wallace
Cell Compatible Encapsulation Of Filaments Into 3d Hydrogels, Katharina Schirmer, Robert A. Gorkin Iii, Stephen T. Beirne, Elise M. Stewart, Brianna C. Thompson, Anita F. Quigley, Robert M. I Kapsa, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Tissue engineering scaffolds for nerve regeneration, or artificial nerve conduits, are particularly challenging due to the high level of complexity the structure of the nerve presents. The list of requirements for artificial nerve conduits is long and includes the ability to physically guide nerve growth using physical and chemical cues as well as electrical stimulation. Combining these characteristics into a conduit, while maintaining biocompatibility and biodegradability, has not been satisfactorily achieved by currently employed fabrication techniques. Here we present a method combining pultrusion and wet-spinning techniques facilitating incorporation of pre-formed filaments into ionically crosslinkable hydrogels. This new biofabrication technique allows …