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Articles 181 - 197 of 197
Full-Text Articles in Engineering
Biofabrication Of Human Articular Cartilage: A Path Towards The Development Of A Clinical Treatment, Carmine Onofrillo, Serena Duchi, Cathal D. O'Connell, Romane Blanchard, Andrea O'Connor, Mark A. Scott, Gordon G. Wallace, Peter Choong, Claudia Di Bella
Biofabrication Of Human Articular Cartilage: A Path Towards The Development Of A Clinical Treatment, Carmine Onofrillo, Serena Duchi, Cathal D. O'Connell, Romane Blanchard, Andrea O'Connor, Mark A. Scott, Gordon G. Wallace, Peter Choong, Claudia Di Bella
Australian Institute for Innovative Materials - Papers
Cartilage injuries cause pain and loss of function, and if severe may result in osteoarthritis (OA). 3D bioprinting is now a tangible option for the delivery of bioscaffolds capable of regenerating the deficient cartilage tissue. Our team has developed a handheld device, the Biopen, to allow in situ additive manufacturing during surgery. Given its ability to extrude in a core/shell manner, the Biopen can preserve cell viability during the biofabrication process, and it is currently the only biofabrication tool tested as a surgical instrument in a sheep model using homologous stem cells. As a necessary step toward the development of …
Gortex-Based Gas Diffusion Electrodes With Unprecedented Resistance To Flooding And Leaking, Prerna Tiwari, George Tsekouras, Gerhard F. Swiegers, Gordon G. Wallace
Gortex-Based Gas Diffusion Electrodes With Unprecedented Resistance To Flooding And Leaking, Prerna Tiwari, George Tsekouras, Gerhard F. Swiegers, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
A significant and long-standing problem in electrochemistry has demanded the need for gas diffusion electrodes that are "flood-proof" and "leak-proof" when operated with a liquid electrolyte. The absence of a solution to this problem has, effectively, made it unviable to use gas diffusion electrodes in many electrochemical manufacturing processes, especially as "gas-depolarized" counter electrodes with significantly decreased energy consumption. In this work, Gortex membranes (also known as expanded PTFE or ePTFE) have been studied as novel, leak-proof substrates for gas diffusion electrodes [PTFE = poly(tetrafluoroethylene)]. We report the fabrication, characterization, and operation of gas diffusion electrodes comprising finely pored Gortex …
Insight Into The Synergistic Effect On Selective Adsorption For Heavy Metal Ions By A Polypyrrole/Tio2composite, Jie Chen, Mengting Yu, Caiyun Wang, Jiangtao Feng, Wei Yan
Insight Into The Synergistic Effect On Selective Adsorption For Heavy Metal Ions By A Polypyrrole/Tio2composite, Jie Chen, Mengting Yu, Caiyun Wang, Jiangtao Feng, Wei Yan
Australian Institute for Innovative Materials - Papers
Polymer/metal oxide composites are promising candidates for the treatment of water pollution. Adsorption selectivity as well as a large adsorption capacity are two key factors for treating wastewater containing multiple ions. Herein, a PPy+/TiO2(O-) composite with a heterojunction structure was first discovered to have novel selectivity toward heavy metal ions. An interesting self-doping nature of TiO2(O-) together with SO42-for PPy+was reported. This interesting structure contributed to an impressive selective adsorption capability with an ascending order of Zn2+> Pb2+≫ Cu2+in a ternary ion system, where the adsorption for Cu2+could be almost suppressed. Through the designed adsorption experiments and characterization techniques including …
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 …
Graphene-Oxide-Loaded Superparamagnetic Iron Oxide Nanoparticles For Ultrasensitive Electrocatalytic Detection Of Microrna, Md Nazmul Islam, Lena Gorgannezhad, Mostafa Kamal Masud, Shunsuke Tanaka, Md. Shahriar Al Hossain, Yusuke Yamauchi, Nam-Trung Nguyen, Muhammad J. A Shiddiky
Graphene-Oxide-Loaded Superparamagnetic Iron Oxide Nanoparticles For Ultrasensitive Electrocatalytic Detection Of Microrna, Md Nazmul Islam, Lena Gorgannezhad, Mostafa Kamal Masud, Shunsuke Tanaka, Md. Shahriar Al Hossain, Yusuke Yamauchi, Nam-Trung Nguyen, Muhammad J. A Shiddiky
Australian Institute for Innovative Materials - Papers
We report the electrocatalytic activity of a new class of superparamagnetic nanoparticles, graphene-oxide-loaded iron oxide (GO/IO hybrid material), towards the reduction of ruthenium hexaammine(III) chloride (Ru(NH3)6]3+, RuHex). Leveraging the electrocatalytic activity of the GO/IO hybrid material and the signal enhancement capacity of [Ru(NH3)6]3+/[Fe(CN)6]3 in an electrocatalytic cycle, an ultrasensitive and specific electrochemical sensor was developed for the detection of cancerrelated microRNA (miRNA). Using the direct affinity interaction between RNA and graphene oxide, magnetically isolated and purified target miRNA were directly adsorbed onto a screenprinted electrode modified with the GO/IO hybrid material. The detection was enabled by chronocoulometric (CC) readout of …
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 …
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 …
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 …
A Bioprinting Printing Approach To Regenerate Cartilage For Microtia Treatment, Johnson Chung, Juliane Kade, Mohammadali Jeiranikhameneh, Zhilian Yue, Payal Mukherjee, Gordon G. Wallace
A Bioprinting Printing Approach To Regenerate Cartilage For Microtia Treatment, Johnson Chung, Juliane Kade, Mohammadali Jeiranikhameneh, Zhilian Yue, Payal Mukherjee, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
The need to search for biomaterials that can promote tissue regeneration and easy to replicate and manufacture is a major driving force for research and development in the area of reconstructive surgery and regenerative medicine. It is of great importance to otolaryngologists to find alternate solutions that require harvesting large amounts of autologous cartilage in patients needing cartilage grafts. Due to its very limited self-regeneration capacity, cartilage repair and reconstruction is extremely challenging. Microtia is a congenital condition of abnormal development of the outer and/ or the middle ear and can range from mild to complete absence of the ear. …
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 …
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 …
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 …
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 …