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Articles 181 - 207 of 207
Full-Text Articles in Engineering
Application Of Terpyridyl Ligands To Tune The Optical And Electrochemical Properties Of A Conducting Polymer, Grzegorz Lisak, Klaudia K. Wagner, Jonathan E. Barnsley, Andrei Veksha, Gregory Huff, Anastasia Elliott, Pawel W. Wagner, Keith C. Gordon, Johan Bobacka, Gordon G. Wallace, Ari Ivaska, David L. Officer
Application Of Terpyridyl Ligands To Tune The Optical And Electrochemical Properties Of A Conducting Polymer, Grzegorz Lisak, Klaudia K. Wagner, Jonathan E. Barnsley, Andrei Veksha, Gregory Huff, Anastasia Elliott, Pawel W. Wagner, Keith C. Gordon, Johan Bobacka, Gordon G. Wallace, Ari Ivaska, David L. Officer
Australian Institute for Innovative Materials - Papers
We present a simple and effective way of using metal and metal-ligand modifications to tune the electrochemical and optical properties of conducting polymers. To that end, a polyterthiophene functionalized with terpyridine moieties was synthesized and then the resulting film's surface or bulk was modified with different metal ions, namely Fe2+, Zn2+and Cu2+and terpyridine. The modification of the terpyridine functionalized polyterthiophene film by Fe2+increased the absorptivity and electrochemical capacitance of the conducting polymer, and improved its conjugation. Further modification by Zn2+and Cu2+resulted in dramatically different spectroelectrochemical properties of the film. Moreover, the influence of the solvents (ACN and 1:1 ACN:H2O) in …
Magnetoelectric Coupling In Nanoscale 0-1 Connectivity, Yan Zong, Zhilian Yue, Pedro M. Martins, Jincheng Zhuang, Yi Du, Senentxu Lanceros-Mendez, Michael J. Higgins
Magnetoelectric Coupling In Nanoscale 0-1 Connectivity, Yan Zong, Zhilian Yue, Pedro M. Martins, Jincheng Zhuang, Yi Du, Senentxu Lanceros-Mendez, Michael J. Higgins
Australian Institute for Innovative Materials - Papers
The strain-mediated magnetoelectric (ME) coupling between piezoelectric (PE) and magnetostrictive (MS) components are established in various connectivities. Discovering new ME connectivity and elucidating the key factors governing the performance of ME composite are of critical importance to find advanced materials for modern electronics. Reported here is a novel ME coupling in 0-1 connectivity. The unique self-assembling ability of 1-dimension crystalline nanocellulose (CNC) nanowhiskers enables the establishment of ME coupling with 0-dimension cobalt ferrite (CFO) nanoparticles without the use of binder. The developed CFO/CNC 0-1 ME composites display a significant ME voltage coefficient (αME) as high as 0.135 mV cm−1 Oe−1. …
Investigation Of S-Shaped Current-Voltage Characteristics In High-Performance Solution-Processed Small Molecule Bulk Heterojunction Solar Cells, Ali Aghassi, Cormac Fay, Attila J. Mozer
Investigation Of S-Shaped Current-Voltage Characteristics In High-Performance Solution-Processed Small Molecule Bulk Heterojunction Solar Cells, Ali Aghassi, Cormac Fay, Attila J. Mozer
Australian Institute for Innovative Materials - Papers
The appearance of an S-shaped current-voltage curve and its impact on the performance of solution-processed small molecule p-DTS(FBTTh2)2:PC70BM bulk heterojunction solar cell devices were investigated. The power conversion efficiency of the devices showing S-curve characteristics was almost half of what was expected for this combination of materials, which was due to a low fill factor (FF) and 20% lower short circuit current density. A normal diode-like current-voltage curve was retrieved when the PCBM content of the active layer was increased, with power conversion efficiency reaching 6%. Analysis of the current-voltage characteristics of the S-curve solar cell devices showed that the …
Mechanics Of Elastomeric Molecular Composites, Pierre Millereau, Etienne Ducrot, Jess Clough, Meredith Wiseman, Hugh Ralph Brown, Rint Sijbesma, Costantino Creton
Mechanics Of Elastomeric Molecular Composites, Pierre Millereau, Etienne Ducrot, Jess Clough, Meredith Wiseman, Hugh Ralph Brown, Rint Sijbesma, Costantino Creton
Australian Institute for Innovative Materials - Papers
No abstract provided.
A Contactless Approach For Monitoring The Mechanical Properties Of Swollen Hydrogels, Andres Ruland Palaia, Xifang Chen, Afsaneh Khansari, Cormac Fay, Sanjeev Gambhir, Zhilian Yue, Gordon G. Wallace
A Contactless Approach For Monitoring The Mechanical Properties Of Swollen Hydrogels, Andres Ruland Palaia, Xifang Chen, Afsaneh Khansari, Cormac Fay, Sanjeev Gambhir, Zhilian Yue, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Using a customized ultrasound setup we investigate the feasibility of using a contactless approach to study the bulk mechanical properties of swollen hydrogels. The study involved two different hydrogels, gelatin methacrylate (GelMa) and green algae extract methacrylate (GAEM), which were prepared to provide materials with varying modulus and different swelling properties. Two approaches have been developed. In the first case, ultrasound was compared to Young's modulus measured by indentation. It was found that can be linearly related to indentation modulus values only when the hydrogel swelling ratio is taken into account. In the second approach, an exponential dependency between swelled …
Future Energy Technology: Enabling New Science For A Sustainable Future, Francois Aguey-Zinsou, Zaiping Guo, Yun Hau Ng, Da-Wei Wang
Future Energy Technology: Enabling New Science For A Sustainable Future, Francois Aguey-Zinsou, Zaiping Guo, Yun Hau Ng, Da-Wei Wang
Australian Institute for Innovative Materials - Papers
With the financial crisis hitting the world economy in 2008, the boom of gas shale and fracking in the US, and the recent move toward outdated technologies in some parts of the world, tackling many of the challenges facing humanity in the 21st century has been relegated to second place. The supply of clean energy is one of those challenges. The test facing us is how to sustain economic growth while dealing with limited primary resources and minimizing environmental pollution. Energy is a fundamental necessity for almost everything needed to sustain us, from food production to drug design and safe …
Hierarchical Porous Nio/B-Nimoo4 Heterostructure As Superior Anode Material For Lithium Storage, Zhijian Wang, Shilin Zhang, Hai Zeng, Haimin Zhao, Wei Sun, Meng Jiang, Chuanqi Feng, Jianwen Liu, Tengfei Zhou, Yang Zheng, Zaiping Guo
Hierarchical Porous Nio/B-Nimoo4 Heterostructure As Superior Anode Material For Lithium Storage, Zhijian Wang, Shilin Zhang, Hai Zeng, Haimin Zhao, Wei Sun, Meng Jiang, Chuanqi Feng, Jianwen Liu, Tengfei Zhou, Yang Zheng, Zaiping Guo
Australian Institute for Innovative Materials - Papers
Ternary transition metal oxides (TTMOs) have attracted considerable attention for rechargeable batteries because of their fascinating properties. However, the unsatisfactory electrochemical performance originating from the poor intrinsic electronic conductivity and inferior structural stability impedes their practical applications. Here, the novel hierarchical porous NiO/β-NiMoO4heterostructure is fabricated, and exhibits high reversible capacity, superior rate capability, and excellent cycling stability in Li-ion batteries (LIBs), which is much better than the corresponding single-phase NiMoO4and NiO materials. The significantly enhanced electrochemical properties can be attributed to its superior structural characteristics, including the large surface area, abundant pores, fast charge transfer, and catalytic effect of the …
Ultrathin And Edge-Enriched Holey Nitride Nanosheets As Bifunctional Electrocatalysts For The Oxygen And Hydrogen Evolution Reactions, Haipeng Guo, Boyang Ruan, Wenbin Luo, Jianqiu Deng, Jiazhao Wang, Hua-Kun Liu, Shi Xue Dou
Ultrathin And Edge-Enriched Holey Nitride Nanosheets As Bifunctional Electrocatalysts For The Oxygen And Hydrogen Evolution Reactions, Haipeng Guo, Boyang Ruan, Wenbin Luo, Jianqiu Deng, Jiazhao Wang, Hua-Kun Liu, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
Exploring economically efficient electrocatalysts with good electrocatalytic activity is essential for diverse electrochemical energy devices. Series of ultrathin metallic nickel-based holey nitride nanosheets were designed as bifunctional catalysts for the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). They exhibit improved catalytic properties owing to the inherent advantages of their plentiful active reaction sites resulting from the complete exposure of the atoms in the large lateral surfaces and from the edges of pore areas, together with expanded lattice spacing distance. This obtained three-dimensional conductive integral architecture can not only accelerate the electron transportation by the highly orientated crystalline structure …
Investigation On The Catalytic Performance Of Reduced‐Graphene‐Oxide‐Interpolated Fes2 And Fes For Oxygen Reduction Reaction, Hengyi Fang, Taizhong Huang, Jianfeng Mao, Shuo Yao, M Dinesh, Yue Sun, Dong Liang, Lei Qi, Jiemei Yu, Zhankun Jiang
Investigation On The Catalytic Performance Of Reduced‐Graphene‐Oxide‐Interpolated Fes2 And Fes For Oxygen Reduction Reaction, Hengyi Fang, Taizhong Huang, Jianfeng Mao, Shuo Yao, M Dinesh, Yue Sun, Dong Liang, Lei Qi, Jiemei Yu, Zhankun Jiang
Australian Institute for Innovative Materials - Papers
The oxygen reduction reaction (ORR) plays a key role in many kinds of energy conversion and energy storage devices, especially in fuel cells. Developing low-cost, easily prepared, and high-efficiency catalysts is a crucial factor for the large-scale applications of fuel cells. Herein, we report the reduced graphene oxide (rGO) interpolated FeS2and FeS as low cost and high performance electrocatalyst for ORR in the alkaline electrolyte. Cyclic voltammetry tests indicate that the onset potential of the ORR for FeS2@rGO is −0.142 V, which is close to the state-of-the-art commercial Pt/C (-0.114 V) catalyst. A low Tafel slope of ∼ 98 mV/decade …
Heterostructures For Electrochemical Hydrogen Evolution Reaction: A Review, Guoqiang Zhao, Kun Rui, Shi Xue Dou, Wenping Sun
Heterostructures For Electrochemical Hydrogen Evolution Reaction: A Review, Guoqiang Zhao, Kun Rui, Shi Xue Dou, Wenping Sun
Australian Institute for Innovative Materials - Papers
Developing sustainable and renewable energy sources along with efficient energy storage and conversion technologies is vital to address environmental and energy challenges. Electrochemical water splitting coupling with grid-scale renewable energy harvesting technologies is becoming one of the most promising approaches. Besides, hydrogen with the highest mass-energy density of any fuel is regarded as the ultimate clean energy carrier. The realization of practical water splitting depends heavily on the development of low-cost, highly active, and durable catalysts for hydrogen evolution reactions (HERs) and oxygen evolution reactions (OERs). Recently, heterostructured catalysts, which are generally composed of electrochemical active materials and various functional …
Twist-Coil Coupling Fibres For High Stroke Tensile Artificial Muscles, Shazed Md Aziz, Sina Naficy, Javad Foroughi, Hugh Ralph Brown, Geoffrey M. Spinks
Twist-Coil Coupling Fibres For High Stroke Tensile Artificial Muscles, Shazed Md Aziz, Sina Naficy, Javad Foroughi, Hugh Ralph Brown, Geoffrey M. Spinks
Australian Institute for Innovative Materials - Papers
A new concept for tensile artificial muscles is introduced in which the torsional actuation of a twisted polymer fibre drives a twist to writhe conversion in a serially attached elastomeric fibre. Thermally induced torsional rotation of the twisted fibre caused formation of coils in the elastomeric fibre which resulted in overall muscle length contraction. Theoretical predictions of the muscle strain were developed by means of a modified single-helix theory. Experimental tests were conducted to measure the isotonic contraction strains for elastomeric fibres of different diameters and lengths. A good agreement between the measured and calculated results was found. Practical applicability …
Heterostructure Manipulation Via In Situ Localized Phase Transformation For High-Rate And Highly Durable Lithium Ion Storage, Junnan Hao, Jian Zhang, Guanglin Xia, Yajie Liu, Yang Zheng, Wenchao Zhang, Yongbing Tang, Wei Kong Pang, Zaiping Guo
Heterostructure Manipulation Via In Situ Localized Phase Transformation For High-Rate And Highly Durable Lithium Ion Storage, Junnan Hao, Jian Zhang, Guanglin Xia, Yajie Liu, Yang Zheng, Wenchao Zhang, Yongbing Tang, Wei Kong Pang, Zaiping Guo
Australian Institute for Innovative Materials - Papers
Recently, heterostructures have attracted much attention in widespread research fields. By tailoring the physicochemical properties of the two components, creating heterostructures endows composites with diverse functions due to the synergistic effects and interfacial interaction. Here, a simple in situ localized phase transformation method is proposed to transform the transition-metal oxide electrode materials into heterostructures. Taking molybdenum oxide as an example, quasi-core-shell MoO3@MoO2heterostructures were successfully fabricated, which were uniformly anchored on reduced graphene oxide (rGO) for high-rate and highly durable lithium ion storage. The in situ introduction of the MoO2shell not only effectively enhances the electronic conductivity but also creates MoO3@MoO2heterojunctions …
Field Dependence Of The Ferromagnetic/Superconducting Proximity Effect In A Ybco/Sto/Lcmo Multilayer, Oliver Paull, Alexey Pan, Grace Causer, Sergey Fedoseev, Antony Jones, Xinzhi Liu, Anatoly B. Rosenfeld, Frank Klose
Field Dependence Of The Ferromagnetic/Superconducting Proximity Effect In A Ybco/Sto/Lcmo Multilayer, Oliver Paull, Alexey Pan, Grace Causer, Sergey Fedoseev, Antony Jones, Xinzhi Liu, Anatoly B. Rosenfeld, Frank Klose
Australian Institute for Innovative Materials - Papers
The interaction between superconductivity and magnetism in spatially confined heterostructures of thin film multilayers is investigated in the ferromagnetic manganite La2/3Ca1/3MnO3 (LCMO) and the high-temperature superconductor YBa2Cu3O7-δ (YBCO) mediated by an intermediate insulating SrTiO3 (STO) layer. The STO layer is used to mediate and tune the range of interactions between the ferromagnet and superconductor. A magnetically depleted layer with zero-magnetisation within the LCMO layer is shown by polarised neutron reflectometry measurements. This zero-magnetisation layer is caused by the onset of superconductivity in YBCO despite being separated by an insulating layer with a thickness much larger than the superconducting coherence length. …
Synergistic Amplification Of Water Oxidation Catalysis On Pt By A Thin-Film Conducting Polymer Composite, Mohammed Alsultan, Sivakumar Balakrishnan, Jaecheol Choi, Rouhollah Jalili, Prerna Tiwari, Pawel W. Wagner, Gerhard F. Swiegers
Synergistic Amplification Of Water Oxidation Catalysis On Pt By A Thin-Film Conducting Polymer Composite, Mohammed Alsultan, Sivakumar Balakrishnan, Jaecheol Choi, Rouhollah Jalili, Prerna Tiwari, Pawel W. Wagner, Gerhard F. Swiegers
Australian Institute for Innovative Materials - Papers
Despite their potential for facilitating high activity, thin-film conducting polymer supports have, historically, expedited only relatively weak performances in catalytic water oxidation (with current densities in the μA/cm2 range). In this work, we have investigated the conditions under which thin-film conducting polymers may synergistically amplify catalysis. A composite conducting polymer film has been developed that, when overcoated on a bare Pt electrode, amplifies its catalytic performance by an order of magnitude (into the mA/cm2 range). When poised at 0.80 V (vs Ag/AgCl) at pH 12, a control, bare Pt electrode yielded a current density of 0.15 mA/cm2 for catalytic water …
Tuning The Structure Of Three Dimensional Nanostructured Molybdenum Disulfide/Nitrogen-Doped Carbon Composite For High Lithium Storage, Yunfeng Chao, Yu Ge, Yong Zhao, Jicheng Jiang, Caiyun Wang, Chunyan Qin, Amruthalakshmi Vijayakumar, Changchun Yu, Gordon G. Wallace
Tuning The Structure Of Three Dimensional Nanostructured Molybdenum Disulfide/Nitrogen-Doped Carbon Composite For High Lithium Storage, Yunfeng Chao, Yu Ge, Yong Zhao, Jicheng Jiang, Caiyun Wang, Chunyan Qin, Amruthalakshmi Vijayakumar, Changchun Yu, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Molybdenum disulfide/nitrogen-doped carbon nanocomposite can afford high capacity, good rate capability and cycling stability in lithium ion batteries owing to the synergistic effect from these two components. Structure of the material has a great impact on the performance as well. In this work, MoS2/nitrogen-doped carbon (MoS2/C) composites have been developed by manipulating the nano-featured polypyrrole templates to guide and confine their growth. They are formed via a simple hydrothermal process combined with a subsequent annealing process. The MoS2/nitrogen-doped carbon nanotubes (MoS2/CNT) composite with 76% of MoS2 exhibits an excellent performance including a high capacity of 1232 mAh g−1 at a …
Aesthetically Pleasing, Visible Light Transmissive, Luminescent Solar Concentrators Using A Bodipy Derivative, Alina Brzeczek-Szafran, Christopher Richardson, Vanessa Lopez, Pawel W. Wagner, Andrew Nattestad
Aesthetically Pleasing, Visible Light Transmissive, Luminescent Solar Concentrators Using A Bodipy Derivative, Alina Brzeczek-Szafran, Christopher Richardson, Vanessa Lopez, Pawel W. Wagner, Andrew Nattestad
Australian Institute for Innovative Materials - Papers
A visible light transmitting BODIPY derivative with an emission peak at 604 nm and quantum yield of 64% is incorporated into a PMMA matrix, resulting in an aesthetically pleasing luminescent solar concentrator (LSC), suitable for "power window" applications. A Monte Carlo modeling platform is shown to be useful firstly to tune device performance, but also to give direction to future synthetic efforts. From this an 4 mm thick LSC of (100 x 100 mm) is shown to have optical efficiency of ≈3.3%.
Boosting Potassium-Ion Batteries By Few-Layered Composite Anodes Prepared Via Solution-Triggered One-Step Shear Exfoliation, Yajie Liu, Zhixin Tai, Jian Zhang, Wei Kong Pang, Qing Zhang, Haifeng Feng, Konstantin K. Konstantinov, Zaiping Guo, Hua-Kun Liu
Boosting Potassium-Ion Batteries By Few-Layered Composite Anodes Prepared Via Solution-Triggered One-Step Shear Exfoliation, Yajie Liu, Zhixin Tai, Jian Zhang, Wei Kong Pang, Qing Zhang, Haifeng Feng, Konstantin K. Konstantinov, Zaiping Guo, Hua-Kun Liu
Australian Institute for Innovative Materials - Papers
Earth-abundant potassium is a promising alternative to lithium in rechargeable batteries, but a pivotal limitation of potassium-ion batteries is their relatively low capacity and poor cycling stability. Here, a high-performance potassium-ion battery is achieved by employing few-layered antimony sulfide/carbon sheet composite anode fabricated via one-step high-shear exfoliation in ethanol/water solvent. Antimony sulfide with few-layered structure minimizes the volume expansion during potassiation and shortens the ion transport pathways, thus enhancing the rate capability; while carbon sheets in the composite provide electrical conductivity and maintain the electrode cycling stability by trapping the inevitable by-product, elemental sulfur. Meanwhile, the effect of the exfoliation …
Recent Advances In Dirac Spin-Gapless Semiconductors, Xiaotian Wang, Tingzhou Li, Zhenxiang Cheng, Xiaolin Wang, Hong Chen
Recent Advances In Dirac Spin-Gapless Semiconductors, Xiaotian Wang, Tingzhou Li, Zhenxiang Cheng, Xiaolin Wang, Hong Chen
Australian Institute for Innovative Materials - Papers
Spin-gapless semiconductors (SGSs), the new generation of spintronic materials, have received increasing attention recently owing to their various attractive properties such as fully spin-polarization and high carrier mobility. Based on their unique band structures, SGSs can be divided into two types: parabolic and Dirac-like linear. The linear-type SGSs, also called Dirac SGSs (DSGSs), have real massless fermions and dissipation-less transport properties, and thus are regarded as promising material candidates for applications in ultra-fast and ultra-low-power spintronic devices. DSGSs can be further classified into p-state type or d-state type depending on the degree of contribution of either the p-orbitals or d-orbitals …
Hydration Layer Structure Of Biofouling-Resistant Nanoparticles, Paul J. Molino, Dan Yang, Matthew Penna, Keisuke Miyazawa, Brianna Knowles, Shane A. Maclaughlin, Takeshi Fukuma, Irene Yarovsky, Michael J. Higgins
Hydration Layer Structure Of Biofouling-Resistant Nanoparticles, Paul J. Molino, Dan Yang, Matthew Penna, Keisuke Miyazawa, Brianna Knowles, Shane A. Maclaughlin, Takeshi Fukuma, Irene Yarovsky, Michael J. Higgins
Australian Institute for Innovative Materials - Papers
Hydrophilic surface chemistries can strongly bind water to produce surfaces that are highly resistant to protein adsorption and fouling. The interfacial bound water and its distinct properties have intrigued researchers for decades, yet the relationship between the water three-dimensional structure and function in antifouling coatings remains elusive. Here, we use hydrophilic, epoxy organosilane modified silica nanoparticles to demonstrate cheap, robust, and practically applied coatings that we discover have broad-ranging, ultralow fouling properties when challenged by various proteins, bacteria, and fungal spores. To understand their excellent antifouling properties, frequency modulation-atomic force microscopy is used to directly observe the interfacial water structure …
New Insights Into Understanding The Exceptional Electrochemical Performance Of P2-Type Manganese-Based Layered Oxide Cathode For Sodium Ion Batteries, Xiaobo Zheng, Peng Li, Haojie Zhu, Kun Rui, Guoqiang Zhao, Jie Shu, Xun Xu, Wenping Sun, Shi Xue Dou
New Insights Into Understanding The Exceptional Electrochemical Performance Of P2-Type Manganese-Based Layered Oxide Cathode For Sodium Ion Batteries, Xiaobo Zheng, Peng Li, Haojie Zhu, Kun Rui, Guoqiang Zhao, Jie Shu, Xun Xu, Wenping Sun, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
Sodium ion batteries (SIBs) are emerging as one of the most promising candidates for large-scale energy storage due to the abundance of sodium. Layered manganese-based oxides, owing to relatively high capacity and low cost, exhibit great potential as SIBs cathode materials, but the cycling life remains a big challenge towards practical applications. Herein, unprecedented electrochemical performance is achieved in P2-type layered Na2/3Ni1/3Mn2/3O2 cathode, and new insights into understanding the structure-performance correlation are gained. Na2/3Ni1/3Mn2/3O2 delivers outstanding cycling stability (~ 80% capacity retention for 2000 cycles, 0.01% capacity loss per cycle),excellent rate capability (70.21% capacity retention at 20 C compared to …
Long Range Intrinsic Ferromagnetism In Two Dimensional Materials And Dissipationless Future Technologies, Babar Shabbir, Muhammad Nadeem, Zhigao Dai, Michael S. Fuhrer, Qi-Kun Xue, Xiaolin Wang, Qiaoliang Bao
Long Range Intrinsic Ferromagnetism In Two Dimensional Materials And Dissipationless Future Technologies, Babar Shabbir, Muhammad Nadeem, Zhigao Dai, Michael S. Fuhrer, Qi-Kun Xue, Xiaolin Wang, Qiaoliang Bao
Australian Institute for Innovative Materials - Papers
The inherent susceptibility of low-dimensional materials to thermal fluctuations has long been expected to pose a major challenge to achieve intrinsic long-range ferromagnetic order in two-dimensional materials. The recent explosion of interest in atomically thin materials and their assembly into van der Waals heterostructures has renewed interest in two-dimensional ferromagnetism, which is interesting from a fundamental scientific point of view and also offers a missing ingredient necessary for the realization of spintronic functionality in van der Waals heterostructures. Recently, several atomically thin materials have been shown to be robust ferromagnets. Such ferromagnetism is thought to be enabled by magnetocrystalline anisotropy …
Excellent Structural, Optical, And Electrical Properties Of Nd-Doped Basno3 Transparent Thin Films, Fang-Yuan Fan, Weiyao Zhao, Ting-Wei Chen, Jian-Min Yan, Jin-Peng Ma, Lei Guo, Guan-Yin Gao, Feifei Wang, Ren-Kui Zheng
Excellent Structural, Optical, And Electrical Properties Of Nd-Doped Basno3 Transparent Thin Films, Fang-Yuan Fan, Weiyao Zhao, Ting-Wei Chen, Jian-Min Yan, Jin-Peng Ma, Lei Guo, Guan-Yin Gao, Feifei Wang, Ren-Kui Zheng
Australian Institute for Innovative Materials - Papers
We epitaxially grew 7 mol. % Nd-doped BaSnO3 (NBSO) thin films on double-side polished SrTiO3 (001) single-crystal substrates and optimized the oxygen pressure (PO2), substrate temperature (TS), and film thickness (t) to achieve excellent structural, optical, and electrical performance. By keeping TS (=800 °C) constant, NBSO films prepared at PO2 = 10 Pa show the best crystallization, yielding a full-width at half-maximum (FWHM) of the x-ray diffraction rocking curve of 0.079° and exhibiting a room-temperature resistivity (ρ) of ∼1.85 mΩ cm and a volume carrier density (n) of ∼8.5 x 1020/cm3. By keeping PO2 (=10 Pa) constant, the room-temperature ρ …
Surface Engineering With Ar+/O2+ Ion Beam Bombardment: Tuning The Electronic And Magnetic Behavior Of Ni80fe20/La0.7sr0.3mno3/Srtio3(001) Junctions, I Bergenti, Palash K. Manna, C H. Lin, P Graziosi, X Liu, Grace L. Causer, F Liscio, A Ruotolo, V A. Dediu, Johan Van Lierop, Frank Klose, Ko-Wei Lin
Surface Engineering With Ar+/O2+ Ion Beam Bombardment: Tuning The Electronic And Magnetic Behavior Of Ni80fe20/La0.7sr0.3mno3/Srtio3(001) Junctions, I Bergenti, Palash K. Manna, C H. Lin, P Graziosi, X Liu, Grace L. Causer, F Liscio, A Ruotolo, V A. Dediu, Johan Van Lierop, Frank Klose, Ko-Wei Lin
Australian Institute for Innovative Materials - Papers
The magnetic and magnetotransport properties of Ni80Fe20/La0.7Sr0.3MnO3 (NiFe/LSMO) bilayers were investigated after bombarding the LSMO surface with low-energy Ar+ or O2+/Ar+ ion beams before the growth of the top NiFe layer. A variety of magnetic properties are revealed, including an asymmetric two-stepped hysteresis loop with an exchange bias loop shift, and alternatively, a symmetric two-stepped hysteresis loop with an enhanced coercivity. Polarized neutron reflectometry measurements provide details of the magnetic depth profile and interface layer magnetism at different temperatures. The LSMO surface modifications determine a complex magnetic and electric NiFe/LSMO interface having a strong effect on the magnetoresistance of the …
Realization Of Flat Band With Possible Nontrivial Topology In Electronic Kagome Lattice, Zhi Li, Jincheng Zhuang, Li Wang, Haifeng Feng, Qian Gao, Xun Xu, Weichang Hao, Xiaolin Wang, C Zhang, Ke-Hui Wu, Shi Xue Dou, Lan Chen, Zhenpeng Hu, Yi Du
Realization Of Flat Band With Possible Nontrivial Topology In Electronic Kagome Lattice, Zhi Li, Jincheng Zhuang, Li Wang, Haifeng Feng, Qian Gao, Xun Xu, Weichang Hao, Xiaolin Wang, C Zhang, Ke-Hui Wu, Shi Xue Dou, Lan Chen, Zhenpeng Hu, Yi Du
Australian Institute for Innovative Materials - Papers
The energy dispersion of fermions or bosons vanishes in momentum space if destructive quantum interference occurs in a frustrated Kagome lattice with only nearest-neighbor hopping. A discrete flat band (FB) without any dispersion is consequently formed, promising the emergence of fractional quantum Hall states at high temperatures. Here, we report the experimental realization of an FB with possible nontrivial topology in an electronic Kagome lattice on twisted multilayer silicene. Because of the unique low-buckled two-dimensional structure of silicene, a robust electronic Kagome lattice has been successfully induced by moiré patterns after twisting the silicene multilayers. The electrons are localized in …
Photocatalytic Reduction On Bismuth-Based P-Block Semiconductors, Dandan Cui, Liang Wang, Yi Du, Weichang Hao, Jun Chen
Photocatalytic Reduction On Bismuth-Based P-Block Semiconductors, Dandan Cui, Liang Wang, Yi Du, Weichang Hao, Jun Chen
Australian Institute for Innovative Materials - Papers
With the constant increase in demand for fuel energy, research on the exploration of renewable energy sources is becoming significantly critical. Herein, photocatalysis for the direct conversion of solar to chemical energy has attracted tremendous attention. In particular, because of the energy band edges mainly formed by p orbitals or s-p hybridized states, resulting in narrow band gaps and highly dispersive band structures, photocatalysts constructed from p-block elements exhibit remarkable visible-light photocatalytic activity. Taking bismuth oxyhalide-based photocatalysts, a typical family of p-block semiconductors, as an example, the following perspective mainly focuses on three significant strategies, including constituent adjustment, vacancy engineering, …
Metal-Organic Framework-Derived Sea-Cucumber-Like Fes2@C Nanorods With Outstanding Pseudocapacitive Na-Ion Storage Properties, Zhenxiao Lu, Nana Wang, Yaohui Zhang, Pan Xue, Meiqing Guo, Bin Tang, Xun Xu, Wenxian Wang, Zhongchao Bai, Shi Xue Dou
Metal-Organic Framework-Derived Sea-Cucumber-Like Fes2@C Nanorods With Outstanding Pseudocapacitive Na-Ion Storage Properties, Zhenxiao Lu, Nana Wang, Yaohui Zhang, Pan Xue, Meiqing Guo, Bin Tang, Xun Xu, Wenxian Wang, Zhongchao Bai, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
Sodium-ion batteries (SIBs) are supposed to be attractive energy strorage and supply devices due to the abundant reserves of sodium. Their limited specific capacity and rate capacity, however, are standing in the way of the extensive application of SIBs. It is reported herein that porous sea-cucumber-like FeS2@C nanorods can act as efficient cathode materials to satisfy the rigorous requirements of the proposed applications. The fabrication of the sea-cucumber-like FeS2@C nanorods involves the hydrothermal growth of F-MIL (where F = Fe, MIL = materials from the Lavoisier Institute) nanorods, and subsequent sulfidation. The electrochemical results demonstrate that …
Martensitic Transformation, Electronic Structure And Magnetism In D0(3)-Ordered Heusler Mn(3)Z (Z = B, Al, Ga, Ge, Sb) Alloys, Tingzhou Li, Rabah Khenata, Zhenxiang Cheng, Hong Chen, Hongkuan Yuan, Tie Yang, Minquan Kuang, S Bin Omran, Xiaotian Wang
Martensitic Transformation, Electronic Structure And Magnetism In D0(3)-Ordered Heusler Mn(3)Z (Z = B, Al, Ga, Ge, Sb) Alloys, Tingzhou Li, Rabah Khenata, Zhenxiang Cheng, Hong Chen, Hongkuan Yuan, Tie Yang, Minquan Kuang, S Bin Omran, Xiaotian Wang
Australian Institute for Innovative Materials - Papers
No abstract provided.