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Articles 211 - 240 of 1524
Full-Text Articles in Physical Sciences and Mathematics
High-Performance Graphene-Fiber-Based Neural Recording Microelectrodes, Kezhong Wang, Christopher Frewin, Dorna Esrafilzadeh, Changchun Yu, Caiyun Wang, Joseph Pancrazio, Mario I. Romero-Ortega, Rouhollah Jalili, Gordon G. Wallace
High-Performance Graphene-Fiber-Based Neural Recording Microelectrodes, Kezhong Wang, Christopher Frewin, Dorna Esrafilzadeh, Changchun Yu, Caiyun Wang, Joseph Pancrazio, Mario I. Romero-Ortega, Rouhollah Jalili, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Fabrication of flexible and free-standing graphene-fiber- (GF-) based microelectrode arrays with a thin platinum coating, acting as a current collector, results in a structure with low impedance, high surface area, and excellent electrochemical properties. This modification results in a strong synergistic effect between these two constituents leading to a robust and superior hybrid material with better performance than either graphene electrodes or Pt electrodes. The low impedance and porous structure of the GF results in an unrivalled charge injection capacity of 10.34 mC cm −2 with the ability to record and detect neuronal activity. Furthermore, the thin Pt layer transfers …
Topological Insulator Materials For Advanced Optoelectronic Devices, Zengji Yue, Xiaolin Wang, Min Gu
Topological Insulator Materials For Advanced Optoelectronic Devices, Zengji Yue, Xiaolin Wang, Min Gu
Australian Institute for Innovative Materials - Papers
Topological insulators are quantum materials that have an insulating bulk state and a topologically protected metallic surface state with spin and momentum helical locking and a Dirac-like band structure [1-3]. Two-dimensional (2D) topological insulators are associated with gapless edge states, and three-dimensional (3D) topological insulators with gapless surface states [4]. A variety of compounds have been identified as 2D or 3D topological insulators, including HgTe/CdTe, Bi2Se3, Bi2Te3, Sb2Te3, BiTeCl, Bi1.5Sb0.5Te1.8Se1.2, SmB6 and so on [5-8]. The topological surface (edge) states in these materials have been mainly investigated by first-principle theoretical calculation, electronic transport, angle-resolved photoemission spectroscopy (ARPES), and scanning tunneling …
Effect Of Monophasic Pulsed Stimulation On Live Single Cell De-Adhesion On Conducting Polymers With Adsorbed Fibronectin As Revealed By Single Cell Force Spectroscopy, Hongrui Zhang, Gordon G. Wallace, Michael J. Higgins
Effect Of Monophasic Pulsed Stimulation On Live Single Cell De-Adhesion On Conducting Polymers With Adsorbed Fibronectin As Revealed By Single Cell Force Spectroscopy, Hongrui Zhang, Gordon G. Wallace, Michael J. Higgins
Australian Institute for Innovative Materials - Papers
The force required to detach a single fibroblast cell in contact with the conducting polymer, polypyrrole doped with dodecylbenzene, was quantified using the Atomic Force Microscope-based technique, Single Cell Force Spectroscopy. The de-adhesion force for a single cell was 0.64 ± 0.03 nN and predominately due to unbinding of α5β1 integrin complexes with surface adsorbed fibronectin, as confirmed by blocking experiments using antibodies. Monophasic pulsed stimulation (50 μs pulse duration) superimposed on either an applied oxidation (+500) or reduction (−500 mV) constant voltage caused a significant decrease in the de-adhesion force by 30%-45% to values ranging from 0.34 to 0.43 …
Evaluation Of Sterilisation Methods For Bio-Ink Components: Gelatin, Gelatin Methacryloyl, Hyaluronic Acid And Hyaluronic Acid Methacryloyl, Cathal D. O'Connell, Carmine Onofrillo, Serena Duchi, Xin Li, Yifan Zhang, Peilin Tian, Lanyita Lu, Anna Trengove, Anita F. Quigley, Sanjeev Gambhir, Afsaneh Khansari, Tajanka Mladenovska, Andrea O'Connor, Claudia Di Bella, Peter Choong, Gordon G. Wallace
Evaluation Of Sterilisation Methods For Bio-Ink Components: Gelatin, Gelatin Methacryloyl, Hyaluronic Acid And Hyaluronic Acid Methacryloyl, Cathal D. O'Connell, Carmine Onofrillo, Serena Duchi, Xin Li, Yifan Zhang, Peilin Tian, Lanyita Lu, Anna Trengove, Anita F. Quigley, Sanjeev Gambhir, Afsaneh Khansari, Tajanka Mladenovska, Andrea O'Connor, Claudia Di Bella, Peter Choong, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Reliable and scalable sterilisation of hydrogels is critical to the clinical translation of many biofabrication approaches, such as extrusion-based 3D bioprinting of cell-laden bio-inks. However sterilisation methods can be destructive, and may have detrimental effects on the naturally-derived hydrogels that constitute much of the bio-ink palette. Determining effective sterilisation methods requires detailed analysis of the effects of sterilisation on relevant properties such as viscosity, printability and cytocompatibility. Yet there have been no studies specifically exploring the effects of sterilisation on bio-inks to date. In this work, we explored the effects of various sterilisation techniques on four of the most widely …
An Efficient Multi-Doping Strategy To Enhance Li-Ion Conductivity In The Garnet-Type Solid Electrolyte Li7la3zr2o12, Yedukondalu Meesala, Yu-Kai Liao, Anirudha Jena, Nai-Hsuan Yang, Wei Kong Pang, Shu-Fen Hu, Ho Chang, Chia-Erh Liu, Shih-Chieh Liao, Jin-Ming Chen, Xiangxin Guo, Ru-Shi Liu
An Efficient Multi-Doping Strategy To Enhance Li-Ion Conductivity In The Garnet-Type Solid Electrolyte Li7la3zr2o12, Yedukondalu Meesala, Yu-Kai Liao, Anirudha Jena, Nai-Hsuan Yang, Wei Kong Pang, Shu-Fen Hu, Ho Chang, Chia-Erh Liu, Shih-Chieh Liao, Jin-Ming Chen, Xiangxin Guo, Ru-Shi Liu
Australian Institute for Innovative Materials - Papers
Lithium-ion (Li + ) batteries suffer from problems caused by the chemical instability of their organic electrolytes. Solid-state electrolytes that exhibit high ionic conductivities and are stable to lithium metal are potential replacements for flammable organic electrolytes. Garnet-type Li 7 La 3 Zr 2 O 12 is a promising solid-state electrolyte for next-generation solid-state Li batteries. In this study, we prepared mono-, dual-, and ternary-doped lithium (Li) garnets by doping tantalum (Ta), tantalum-barium (Ta-Ba), and tantalum-barium-gallium (Ta-Ba-Ga) ions, along with an undoped Li 7 La 3 Zr 2 O 12 (LLZO) cubic garnet electrolyte, using a conventional solid-state reaction method. …
Triaxial Braided Piezo Fiber Energy Harvesters For Self-Powered Wearable Technologies, Fatemeh Mokhtari, Javad Foroughi, Tian Zheng, Zhenxiang Cheng, Geoffrey M. Spinks
Triaxial Braided Piezo Fiber Energy Harvesters For Self-Powered Wearable Technologies, Fatemeh Mokhtari, Javad Foroughi, Tian Zheng, Zhenxiang Cheng, Geoffrey M. Spinks
Australian Institute for Innovative Materials - Papers
Today we associate wearable technologies with electronic devices and novel approaches for powering these devices are being enabled by the advent of new piezoelectric materials and novel fabrication strategies. Mechanical energy harvesters are needed for such diverse applications as self-powered wireless sensors, structural and human health monitoring systems, and cheaply harvesting energy from human movements. Herein, we demonstrate novel triaxial braided PVDF yarn harvesters that piezoelectrically convert tensile mechanical energy into electrical energy. Compressing or bending braided PVDF yarns generated a maximum output voltage of 380 mV and a power density of 29.62 μW cm -3 which is ∼1559% higher …
Site Preference And Tetragonal Distortion In Palladium-Rich Heusler Alloys, Mengxin Wu, Yilin Han, Abdelmadjid Bouhemadou, Zhenxiang Cheng, Rabah Khenata, Minquan Kuang, Xiangjiang Wang, Tie Yang, Hongkuan Yuan, Xiaotian Wang
Site Preference And Tetragonal Distortion In Palladium-Rich Heusler Alloys, Mengxin Wu, Yilin Han, Abdelmadjid Bouhemadou, Zhenxiang Cheng, Rabah Khenata, Minquan Kuang, Xiangjiang Wang, Tie Yang, Hongkuan Yuan, Xiaotian Wang
Australian Institute for Innovative Materials - Papers
In this work, two kinds of competition between different Heusler structure types are considered, one is the competition between XA and L21 structures based on the cubic system of full-Heusler alloys, Pd2 YZ (Y = Co, Fe, Mn; Z = B, Al, Ga, In, Tl, Si, Ge, Sn, Pb, P, As, Sb). Most alloys prefer the L21 structure; that is, Pd atoms tend to occupy the a (0, 0, 0) and c (0.5, 0.5, 0.5) Wyckoff sites, the Y atom is generally located at site b (0.25, 0.25, 0.25), and the main group element Z has a preference for site …
Size Effects On The Mechanical Properties Of Nanoporous Graphene Networks, Dai-Ming Tang, Cui Ren, Ling Zhang, Ying Tao, Peng Zhang, Wei Lv, Xiang Jia, Xiaojuan Jiang, Guangmin Zhou, Takahito Ohmura, Ping Huai, Feng Li, Yoshio Bando, Dmitri Golberg, Quan-Hong Yang
Size Effects On The Mechanical Properties Of Nanoporous Graphene Networks, Dai-Ming Tang, Cui Ren, Ling Zhang, Ying Tao, Peng Zhang, Wei Lv, Xiang Jia, Xiaojuan Jiang, Guangmin Zhou, Takahito Ohmura, Ping Huai, Feng Li, Yoshio Bando, Dmitri Golberg, Quan-Hong Yang
Australian Institute for Innovative Materials - Papers
It is essential to understand the size scaling effects on the mechanical properties of graphene networks to realize the potential mechanical applications of graphene assemblies. Here, a "highly dense-yet-nanoporous graphene monolith (HPGM)" is used as a model material of graphene networks to investigate the dependence of mechanical properties on the intrinsic interplanar interactions and the extrinsic specimen size effects. The interactions between graphene sheets could be enhanced by heat treatment and the plastic HPGM is transformed into a highly elastic network. A strong size effect is revealed by in situ compression of micro- and nanopillars inside electron microscopes. Both the …
Actuator Materials: Review On Recent Advances And Future Outlook For Smart Textiles, Dharshika Kongahage, Javad Foroughi
Actuator Materials: Review On Recent Advances And Future Outlook For Smart Textiles, Dharshika Kongahage, Javad Foroughi
Australian Institute for Innovative Materials - Papers
Smart textiles based on actuator materials are of practical interest, but few types have been commercially exploited. The challenge for researchers has been to bring the concept out of the laboratory by working out how to build these smart materials on an industrial scale and permanently incorporate them into textiles. Smart textiles are considered as the next frontline for electronics. Recent developments in advance technologies have led to the appearance of wearable electronics by fabricating, miniaturizing and embedding flexible conductive materials into textiles. The combination of textiles and smart materials have contributed to the development of new capabilities in fabrics …
Yolk-Shell Structured Fep@C Nanoboxes As Advanced Anode Materials For Rechargeable Lithium-/Potassium-Ion Batteries, Fuhua Yang, Hong Gao, Junnan Hao, Shilin Zhang, Peng Li, Yuqing Liu, Jun Chen, Zaiping Guo
Yolk-Shell Structured Fep@C Nanoboxes As Advanced Anode Materials For Rechargeable Lithium-/Potassium-Ion Batteries, Fuhua Yang, Hong Gao, Junnan Hao, Shilin Zhang, Peng Li, Yuqing Liu, Jun Chen, Zaiping Guo
Australian Institute for Innovative Materials - Papers
Maintaining structural stability and alleviating the intrinsic poor conductivity of conversion-type reaction anode materials are of great importance for practical application. Introducing void space and a highly conductive host to accommodate the volume changes and enhance the conductivity would be a smart design to achieve robust construction; effective electron and ion transportation, thus, lead to prolonged cycling life and excellent rate performance. Herein, uniform yolk-shell FeP@C nanoboxes (FeP@CNBs) with the inner FeP nanoparticles completely protected by a thin and self-supported carbon shell are synthesized through a phosphidation process with yolk-shell Fe 2 O 3 @CNBs as a precursor. The volumetric …
Challenges And Prospects In The Catalysis Of Electroreduction Of Nitrogen To Ammonia, Bryan H. R Suryanto, Hoang-Long Du, Dabin Wang, Jun Chen, Alexandr N. Simonov, Douglas R. Macfarlane
Challenges And Prospects In The Catalysis Of Electroreduction Of Nitrogen To Ammonia, Bryan H. R Suryanto, Hoang-Long Du, Dabin Wang, Jun Chen, Alexandr N. Simonov, Douglas R. Macfarlane
Australian Institute for Innovative Materials - Papers
Ammonia is a widely produced chemical that is the basis of most fertilisers. However, it is currently derived from fossil fuels and there is an urgent need to develop sustainable approaches to its production. Ammonia is also being considered as a renewable energy carrier, allowing efficient storage and transportation of renewables. For these reasons, the electrochemical nitrogen reduction reaction (NRR) is currently being intensely investigated as the basis for future mass production of ammonia from renewables. This Perspective critiques current steps and miss-steps towards this important goal in terms of experimental methodology and catalyst selection, proposing a protocol for rigorous …
Quantum Oscillations In Iron-Doped Single Crystals Of The Topological Insulator S B2 T E3, Weiyao Zhao, David L. Cortie, Lei Chen, Zhi Li, Zengji Yue, Xiaolin Wang
Quantum Oscillations In Iron-Doped Single Crystals Of The Topological Insulator S B2 T E3, Weiyao Zhao, David L. Cortie, Lei Chen, Zhi Li, Zengji Yue, Xiaolin Wang
Australian Institute for Innovative Materials - Papers
We investigated the magnetotransport properties of Fe-doped topological insulator Sb1.96Fe0.04Te3 single crystals. With doping, the band structure changes significantly and multiple Fermi pockets become evident in the Shubnikov-de Haas oscillations, in contrast to the single frequency detected for pure Sb2Te3. Using complementary density functional theory calculations, we identify an additional bulk hole pocket introduced at the Γ point which originates from the chemical distortion associated with the Fe dopant. Experimentally, both doped and undoped samples are hole-carrier dominated; however, Fe doping also reduces the carrier density and mobility. The angle dependent quantum oscillations of Sb1.96Fe0.04Te3 were analyzed to characterize the …
Quantitative Ultrasound Imaging Of Cell-Laden Hydrogels And Printed Constructs, Andres Ruland Palaia, Kerry J. Gilmore, Luciana Daikuara, Cormac Fay, Zhilian Yue, Gordon G. Wallace
Quantitative Ultrasound Imaging Of Cell-Laden Hydrogels And Printed Constructs, Andres Ruland Palaia, Kerry J. Gilmore, Luciana Daikuara, Cormac Fay, Zhilian Yue, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
In the present work we have revisited the application of quantitative ultrasound imaging (QUI) to cellular hydrogels, by using the reference phantom method (RPM) in combination with a local attenuation compensation algorithm. The investigated biological samples consisted of cell-laden collagen hydrogels with PC12 neural cells. These cell-laden hydrogels were used to calibrate the integrated backscattering coefficient (IBC) as a function of cell density, which was then used to generate parametric images of local cell density. The image resolution used for QUI and its impact on the relative IBC error was also investigated. Another important contribution of our work was the …
Predicting Neural Recording Performance Of Implantable Electrodes, Alexander R. Harris, Ben Allitt, Antonio G. Paolini
Predicting Neural Recording Performance Of Implantable Electrodes, Alexander R. Harris, Ben Allitt, Antonio G. Paolini
Australian Institute for Innovative Materials - Papers
Recordings of neural activity can be used to aid communication, control prosthetic devices or alleviatedisease symptoms. Chronic recordings require a high signal-to-noise ratio that is stable for years. Currentcortical devices generally fail within months to years after implantation. Development of novel devices toincrease lifetime requires valid testing protocols and a knowledge of the critical parameters controllingelectrophysiological performance. Here we present electrochemical and electrophysiological protocolsfor assessing implantable electrodes. Biological noise from neural recording has significant impact on signal-to-noise ratio. A recently developed surgical approach was utilised to reduce biological noise. This allowed correlation of electrochemical and electrophysiological behaviour. The impedance versus …
Emerging Approach In Semiconductor Photocatalysis: Towards 3d Architectures For Efficient Solar Fuels Generation In Semi-Artificial Photosynthetic Systems, Chong Yong Lee, Jinshuo Zou, John P. Bullock, Gordon G. Wallace
Emerging Approach In Semiconductor Photocatalysis: Towards 3d Architectures For Efficient Solar Fuels Generation In Semi-Artificial Photosynthetic Systems, Chong Yong Lee, Jinshuo Zou, John P. Bullock, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Interest in the application of semiconductors toward the photocatalytic generation of solar fuels, including hydrogen from water-splitting and hydrocarbons from the reduction of carbon dioxide, remains strong due to concerns over the continued emission of greenhouse gases as well as other environmental impacts from the use of fossil fuels. While the efficiency and durability of such systems will depend heavily on the types of the semiconductors, co-catalysts, and mediators employed, the dimensionality of the semiconductors employed can also have a significant impact. Recognizing the broad nature of this field and the many recent advances in it, this review focuses on …
Approaching High-Performance Potassium-Ion Batteries Via Advanced Design Strategies And Engineering, Wenchao Zhang, Yajie Liu, Zaiping Guo
Approaching High-Performance Potassium-Ion Batteries Via Advanced Design Strategies And Engineering, Wenchao Zhang, Yajie Liu, Zaiping Guo
Australian Institute for Innovative Materials - Papers
Potassium-ion batteries (PIBs) have attracted tremendous attention due to their low cost, fast ionic conductivity in electrolyte, and high operating voltage. Research on PIBs is still in its infancy, however, and achieving a general understanding of the drawbacks of each component and proposing research strategies for overcoming these problems are crucial for the exploration of suitable electrode materials/electrolytes and the establishment of electrode/ cell assembly technologies for further development of PIBs. In this review, we summarize our current understanding in this field, classify and highlight the design strategies for addressing the key issues in the research on PIBs, and propose …
Competition Between Cubic And Tetragonal Phasesin All-D-Metal Heusler Alloys, X2-Xmn1+Xv (X= Pd, Ni, Pt, Ag, Au, Ir, Co; X= 1, 0): A New Potential Direction Of The Heusler Family, Yilin Han, Mengxin Wu, Yu Feng, Zhenxiang Cheng, Tingting Lin, Tie Yang, Rabah Khenata, Xiaotian Wang
Competition Between Cubic And Tetragonal Phasesin All-D-Metal Heusler Alloys, X2-Xmn1+Xv (X= Pd, Ni, Pt, Ag, Au, Ir, Co; X= 1, 0): A New Potential Direction Of The Heusler Family, Yilin Han, Mengxin Wu, Yu Feng, Zhenxiang Cheng, Tingting Lin, Tie Yang, Rabah Khenata, Xiaotian Wang
Australian Institute for Innovative Materials - Papers
In this work, a series of all-d-metal Heusler alloys, X 2 - x Mn 1 + x V (X = Pd, Ni, Pt, Ag, Au, Ir, Co; x; = 1, 0), were predicted by first principles. The series can be roughly divided into two categories: XMn 2 V (Mn-rich type) and X 2 MnV (Mn-poor type). Using optimized structural analysis, it is shown that the ground state of these all-d-metal Heusler alloys does not fully meet the site-preference rule for classic full-Heusler alloys. All the Mn-rich type alloys tend to form the L2 1 structure, where the two Mn atoms …
Dielectric And Piezoelectric Properties Of Textured Lead-Free Na0.5bi0.5tio3-Based Ceramics, Nannan Dong, Xiaoyi Gao, Fangquan Xia, Hanxing Liu, Hua Hao, Shujun Zhang
Dielectric And Piezoelectric Properties Of Textured Lead-Free Na0.5bi0.5tio3-Based Ceramics, Nannan Dong, Xiaoyi Gao, Fangquan Xia, Hanxing Liu, Hua Hao, Shujun Zhang
Australian Institute for Innovative Materials - Papers
This work provides a comparative study of the dielectric and piezoelectric properties of randomly oriented and textured 0.88Na 0.5 Bi 0.5 TiO 3 -0.08K 0.5 Bi 0.5 TiO 3 -0.04BaTiO 3 (88NBT) ceramics. Textured ceramics were fabricated by template grain growth (TGG) method using NaNbO 3 (NN) for templates. For textured ceramics with 4 wt% NN templates, a Lotgering factor of 96% and piezoelectric coefficient d 33 of 185 pC/N were obtained. Compared to the randomly oriented ceramics, textured ceramics show lower strain hysteresis (H = 7.6%), higher unipolar strain of 0.041% with corresponding large signal piezoelectric coefficient d 33* …
Sulfated Polysaccharide-Based Scaffolds For Orthopaedic Tissue Engineering, Jeremy Dinoro, Malachy Maher, Sepehr Talebian, Mahboubeh Jafarkhani, Mehdi Mehrali, Gorka Orive, Javad Foroughi, Megan S. Lord, Alireza Dolatshahi-Pirouz
Sulfated Polysaccharide-Based Scaffolds For Orthopaedic Tissue Engineering, Jeremy Dinoro, Malachy Maher, Sepehr Talebian, Mahboubeh Jafarkhani, Mehdi Mehrali, Gorka Orive, Javad Foroughi, Megan S. Lord, Alireza Dolatshahi-Pirouz
Australian Institute for Innovative Materials - Papers
Given their native-like biological properties, high growth factor retention capacity and porous nature, sulfated-polysaccharide-based scaffolds hold great promise for a number of tissue engineering applications. Specifically, as they mimic important properties of tissues such as bone and cartilage they are ideal for orthopaedic tissue engineering. Their biomimicry properties encompass important cell-binding motifs, native-like mechanical properties, designated sites for bone mineralisation and strong growth factor binding and signaling capacity. Even so, scientists in the field have just recently begun to utilise them as building blocks for tissue engineering scaffolds. Most of these efforts have so far been directed towards in vitro …
Biomimetic Thermal-Sensitive Multi-Transform Actuator, Tae Hyeob Kim, Jung Gi Choi, Ju Young Byun, Yongwoo Jang, Sung Min Kim, Geoffrey M. Spinks, Seon Jeong Kim
Biomimetic Thermal-Sensitive Multi-Transform Actuator, Tae Hyeob Kim, Jung Gi Choi, Ju Young Byun, Yongwoo Jang, Sung Min Kim, Geoffrey M. Spinks, Seon Jeong Kim
Australian Institute for Innovative Materials - Papers
Controllable and miniaturised mechanical actuation is one of the main challenges facing various emerging technologies, such as soft robotics, drug delivery systems, and microfluidics. Here we introduce a simple method for constructing actuating devices with programmable complex motions. Thermally responsive hydrogels based on poly(N-isopropylacrylamide) (PNIPAM) and its functionalized derivatives (f-PNIPAM) were used to control the lower critical solution temperature (LCST) or the temperature at which the gel volume changes. Techniques for ultra-violet crosslinking the monomer solutions were developed to generate gel sheets with controllable crosslink density gradients that allowed bending actuation to specified curvatures by heating through the LCST. Simple …
Native Surface Oxides Featured Liquid Metals For Printable Self-Powered Photoelectrochemical Device, Yuqing Wang, Yaqi Li, Jingwei Zhang, Jincheng Zhuang, Long Ren, Yi Du
Native Surface Oxides Featured Liquid Metals For Printable Self-Powered Photoelectrochemical Device, Yuqing Wang, Yaqi Li, Jingwei Zhang, Jincheng Zhuang, Long Ren, Yi Du
Australian Institute for Innovative Materials - Papers
Constructing high-performance photo-electrodes by patterning the photo-active semiconducting components with desirable texture and architecture is one of the most promising approaches to achieve the practical and scale-up application of photo-electric or photoelectrochemical (PEC) devices. However, it is a still big challenge to efficiently and effectively handle nano-structural semiconducting materials into intergraded circuit devices, displaying good electric-contact and stability. Here, a facile manufacture strategy for fabricating native metal-oxides based photo-electrodes by directly printing Ga-based liquid metals is explored. The PEC device, functionalized by the native Ga-oxide functional layer, exhibits self-powered photo-detection behaviors and presents fast photo-electric responsibility in response to the …
Intercalation Pseudocapacitance Boosting Ultrafast Sodium Storage In Prussian Blue Analogs, Baoqi Wang, Shuangyu Liu, Wenping Sun, Yuxin Tang, Hongge Pan, Mi Yan, Yinzhu Jiang
Intercalation Pseudocapacitance Boosting Ultrafast Sodium Storage In Prussian Blue Analogs, Baoqi Wang, Shuangyu Liu, Wenping Sun, Yuxin Tang, Hongge Pan, Mi Yan, Yinzhu Jiang
Australian Institute for Innovative Materials - Papers
Great expectation is placed on sodium-ion batteries with high rate capability to satisfy multiple requirements in large-scale energy storage systems. However, the large ionic radius and high mass of Na + hamper its kinetics in the case of diffusion-controlled mechanisms in conventional electrodes. In this study, a unique intercalation pseudocapacitance has been demonstrated in low-vacancy copper hexacyanoferrate, achieving outstanding rate capability. The minimization of the [Fe(CN) 6 ] vacancy enables unhindered diffusion pathways for Na + and little structural change during the Fe 2+ /Fe 3+ redox reaction, eliminating solid-state diffusion limits. Moreover, the Cu + /Cu 2+ couple is …
Electrostatically Assembled Construction Of Ternary Tio2-Cu@C Hybrid With Enhanced Solar-To-Hydrogen Evolution Employing Amorphous Carbon Dots As Electronic Mediator, Jiaxin Zhu, Mengmeng Zhang, Jinyan Xiong, Yinan Yan, Weijie Li, Gang Cheng
Electrostatically Assembled Construction Of Ternary Tio2-Cu@C Hybrid With Enhanced Solar-To-Hydrogen Evolution Employing Amorphous Carbon Dots As Electronic Mediator, Jiaxin Zhu, Mengmeng Zhang, Jinyan Xiong, Yinan Yan, Weijie Li, Gang Cheng
Australian Institute for Innovative Materials - Papers
The huge demand for renewable hydrogen produced by water splitting has prompted people to conduct in-depth research on the hydrogen evolution reaction for the development of earth-abundant, non-precious, and multi-functional metal catalysts. Herein, a noble-metal-free ternary composite of TiO2-Cu@C was prepared by electrostatic self-assembly loaded copper nanoparticles and amorphous carbon dots (CDs) on porous TiO2 microrods. The good conductivity of the CDs was beneficial to promoting the charge transfer and separation, generating an enhanced solar-to-hydrogen performance on TiO2-Cu@C. The optimized TiO2-Cu@C reveals a stable and notable hydrogen evolution rate of 3911 μmol g−1h−1, which is 1.6 times that of TiO2-Cu …
Thermoelectric Performance Of Single-Phase Tellurium-Reduced Quaternary (Pbte)0.55(Pbs)0.1(Pbse)0.35, Laaya Shaabani, Graeme Blake, Andrew Manettas, Shokat Keshavarzi, Sima Aminorroaya-Yamini
Thermoelectric Performance Of Single-Phase Tellurium-Reduced Quaternary (Pbte)0.55(Pbs)0.1(Pbse)0.35, Laaya Shaabani, Graeme Blake, Andrew Manettas, Shokat Keshavarzi, Sima Aminorroaya-Yamini
Australian Institute for Innovative Materials - Papers
Lead chalcogenide quaternary systems have been shown to provide high thermoelectric (TE) efficiency superior to those of binary andternary lead chalcogenides, arising from both altered electronic band structures and a reduction in lattice thermal conductivity. Here, we have synthesized single-phase samples of the quaternary compound (PbTe)0.55(PbS)0.1(PbSe)0.35 dopedwith Na and characterized their TE properties. We show that the dopant solubility is limited to 1 at. %. A very low lattice thermal conductivity of∼0.6 Wm−1K−1at 850 K is achieved at all dopant concentrations because of phonon scattering from point defects associated with solute atoms with high contrastatomic mass. As a result, a …
Suppressing Manganese Dissolution Via Exposing Stable {111} Facets For High-Performance Lithium-Ion Oxide Cathode, Yao Xiao, Xu-Dong Zhang, Yanfang Zhu, Peng-Fei Wang, Ya-Xia Yin, Xinan Yang, Ji-Lei Shi, Jian Liu, Hongliang Li, Xiaodong Guo, Ben-He Zhong, Yu-Guo Guo
Suppressing Manganese Dissolution Via Exposing Stable {111} Facets For High-Performance Lithium-Ion Oxide Cathode, Yao Xiao, Xu-Dong Zhang, Yanfang Zhu, Peng-Fei Wang, Ya-Xia Yin, Xinan Yang, Ji-Lei Shi, Jian Liu, Hongliang Li, Xiaodong Guo, Ben-He Zhong, Yu-Guo Guo
Australian Institute for Innovative Materials - Papers
Spinel-type LiMn 2 O 4 cathode materials commonly suffer from manganese dissolution due to the severe interfacial side reactions especially at elevated temperature. Here, a 3D hollow fusiform LiMn 2 O 4 cathode material is reported with preferentially exposed stable {111} facets and seamless outer structure, which is clearly confirmed by microfocused ion beam scanning electron microscopy, high-resolution transmission electron microscopy as well as scanning transmission electron microscopy with atomic resolution. Owing to the optimal geometrical structure design and the preferentially exposed stable {111} facets, the electrode delivers excellent rate capability (107.6 mAh g −1 at 10 C), remarkable cycling …
Bio‑Derived Hierarchical Multicore-Shell Fe2n‑Nanoparticle‑Impregnated N‑Doped Carbon Nanofiber Bundles: A Host Material For Lithium‑/Potassium‑Ion Storage, Hongjun Jiang, Ling Huang, Yunhong Wei, Boya Wang, Hao Wu, Yun Zhang, Hua-Kun Liu, Shi Xue Dou
Bio‑Derived Hierarchical Multicore-Shell Fe2n‑Nanoparticle‑Impregnated N‑Doped Carbon Nanofiber Bundles: A Host Material For Lithium‑/Potassium‑Ion Storage, Hongjun Jiang, Ling Huang, Yunhong Wei, Boya Wang, Hao Wu, Yun Zhang, Hua-Kun Liu, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
Despite the significant progress in the fabrication of advanced electrode materials, complex control strategies and tedious processing are often involved for most targeted materials to tailor their compositions, morphologies, and chemistries. Inspired by the unique geometric structures of natural biomacromolecules together with their high affinities for metal species, we propose the use of skin collagen fibers for the template crafting of a novel multicore-shell Fe2N-carbon framework anode configuration, composed of hierarchical N-doped carbon nanofiber bundles firmly embedded with Fe2N nanoparticles (Fe2N@N-CFBs). In the resultant heterostructure, the Fe2N nanoparticles firmly confined inside the carbon shells are spatially isolated but electronically well …
Development Of Rhamnose-Rich Hydrogels Based On Sulfated Xylorhamno-Uronic Acid Toward Wound Healing Applications, Xifang Chen, Zhilian Yue, Pia C. Winberg, Jeremy Dinoro, Patricia Y. Hayes, Stephen T. Beirne, Gordon G. Wallace
Development Of Rhamnose-Rich Hydrogels Based On Sulfated Xylorhamno-Uronic Acid Toward Wound Healing Applications, Xifang Chen, Zhilian Yue, Pia C. Winberg, Jeremy Dinoro, Patricia Y. Hayes, Stephen T. Beirne, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
An array of biological properties is demonstrated in the category of extracts broadly known as ulvans, including antibacterial, anti-inflammatory and anti-coagulant activities. However, the development of this category in biomedical applications is limited due to high structural variability across species and a lack of consistent and scalable sources. In addition, the modification and formulation of these molecules is still in its infancy with regard to progressing to product development. Here, a sulfated and rhamnose-rich, xylorhamno-uronic acid (XRU) extract from the cell wall of a controlled source of cultivated Australian ulvacean macroalgae resembles mammalian connective glycosaminoglycans. It is therefore a strong …
Morphology Tuning Of Inorganic Nanomaterials Grown By Precipitation Through Control Of Electrolytic Dissociation And Supersaturation, Weihong Lai, Yunxiao Wang, Yong Wang, Minghong Wu, Jiazhao Wang, Hua-Kun Liu, Shulei Chou, Jun Chen, Shi Xue Dou
Morphology Tuning Of Inorganic Nanomaterials Grown By Precipitation Through Control Of Electrolytic Dissociation And Supersaturation, Weihong Lai, Yunxiao Wang, Yong Wang, Minghong Wu, Jiazhao Wang, Hua-Kun Liu, Shulei Chou, Jun Chen, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
The precise control of the morphology of inorganic materials during their synthesis is important yet challenging. Here we report that the morphology of a wide range of inorganic materials, grown by rapid precipitation from a metal cation solution, can be tuned during their crystallization from one- to three-dimensional (1D to 3D) structures without the need for capping agents or templates. This control is achieved by adjusting the balance between the electrolytic dissociation (α) of the reactants and the supersaturation (S) of the solutions. Low-α, weak electrolytes promoted the growth of anisotropic (1D and 2D) samples, with 1D materials favoured in …
Facile Electrochemical Synthesis Of Ultrathin Iron Oxyhydroxide Nanosheets For The Oxygen Evolution Reaction, Jinshuo Zou, Germanas Peleckis, Chong Yong Lee, Gordon G. Wallace
Facile Electrochemical Synthesis Of Ultrathin Iron Oxyhydroxide Nanosheets For The Oxygen Evolution Reaction, Jinshuo Zou, Germanas Peleckis, Chong Yong Lee, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
We propose a facile approach to synthesise ultrathin iron oxyhydroxide nanosheets for use in catalysing the electrochemical oxygen evolution reaction. This two dimensional material lowers the overpotential and provides a platform for further performance enhancement via integration of species such as nickel into an ultrathin nanosheet structure.
General Π-Electron-Assisted Strategy For Single-Atom (Ir, Pt, Ru, Pd, Fe, And Ni) Electrocatalysts With Bi-Functional Active Sites Toward Highly Efficient Water Splitting, Weihong Lai, Li-Fu Zhang, Wei-Bo Hua, Sylvio Indris, Zichao Yan, Zhe Hu, Binwei Zhang, Yani Liu, Li Wang, Min Liu, Rong Liu, Yunxiao Wang, Jiazhao Wang, Zhenpeng Hu, Hua-Kun Liu, Shulei Chou, Shi Xue Dou
General Π-Electron-Assisted Strategy For Single-Atom (Ir, Pt, Ru, Pd, Fe, And Ni) Electrocatalysts With Bi-Functional Active Sites Toward Highly Efficient Water Splitting, Weihong Lai, Li-Fu Zhang, Wei-Bo Hua, Sylvio Indris, Zichao Yan, Zhe Hu, Binwei Zhang, Yani Liu, Li Wang, Min Liu, Rong Liu, Yunxiao Wang, Jiazhao Wang, Zhenpeng Hu, Hua-Kun Liu, Shulei Chou, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
Both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) are crucial to water splitting, but require alternative active sites. Now, a general pelectron- assisted strategy to anchor single-atom sites (M=Ir, Pt, Ru, Pd, Fe, Ni) on a heterogeneous support is reported. The Matoms can simultaneously anchor on two distinct domains of the hybrid support, four-fold N/C atoms (M@NC), and centers of Co octahedra (M@Co), which are expected to serve as bifunctional electrocatalysts towards the HER and the OER. The Ir catalyst exhibits the best water-splitting performance, showing a low applied potential of 1.603V to achieve 10 mAcm@2 …