Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Engineering (1689)
- Social and Behavioral Sciences (1157)
- Life Sciences (1145)
- Computer Sciences (48)
- Business (26)
-
- Technology and Innovation (17)
- Sociology (12)
- Business Administration, Management, and Operations (11)
- Criminology (11)
- Computer Law (10)
- Internet Law (10)
- Law (10)
- Law and Society (10)
- Other Engineering (10)
- Public Affairs, Public Policy and Public Administration (10)
- Public Policy (10)
- Science and Technology Studies (10)
- Social Policy (10)
- E-Commerce (9)
- Chemistry (8)
- Management Information Systems (7)
- Earth Sciences (5)
- Arts and Humanities (4)
- Biochemistry, Biophysics, and Structural Biology (4)
- Computer Engineering (4)
- Business Law, Public Responsibility, and Ethics (3)
- Environmental Sciences (3)
- Medicinal-Pharmaceutical Chemistry (3)
- Medicine and Health Sciences (3)
- Keyword
-
- CMMB (280)
- GeoQUEST (184)
- Carbon (115)
- For (107)
- Australia (98)
-
- Properties (89)
- Performance (81)
- Analysis (79)
- High (77)
- Batteries (76)
- Graphene (76)
- Synthesis (76)
- Study (70)
- Lithium (69)
- Films (68)
- Magnetic (68)
- Ion (63)
- Model (59)
- System (56)
- Single (54)
- Data (53)
- Systems (53)
- Cells (52)
- Solar (52)
- Storage (52)
- Effect (51)
- Structure (50)
- 3 (48)
- Based (48)
- From (47)
- Publication Year
- Publication
- Publication Type
- File Type
Articles 31 - 60 of 4865
Full-Text Articles in Physical Sciences and Mathematics
Ferroelectrically Tunable Magnetism In Bifeo3/Batio3 Heterostructure Revealed By The First-Principles Calculations, Wenxuan Wang, Wei Sun, Guangbiao Zhang, Fengzhu Ren, Yuanxu Wang, Caiyin You, Zhenxiang Cheng
Ferroelectrically Tunable Magnetism In Bifeo3/Batio3 Heterostructure Revealed By The First-Principles Calculations, Wenxuan Wang, Wei Sun, Guangbiao Zhang, Fengzhu Ren, Yuanxu Wang, Caiyin You, Zhenxiang Cheng
Australian Institute for Innovative Materials - Papers
© 2020 The perovskite oxide interface has attracted extensive attention as a platform for achieving strong coupling between ferroelectricity and magnetism. In this work, robust control of magnetoelectric (ME) coupling in the BiFeO3/BaTiO3 (BFO/BTO) heterostructure (HS) was revealed by using the first-principles calculation. Switching of the ferroelectric polarization of BTO induce large ME effect with significant changes on the magnetic ordering and easy magnetization axis, making up for the weak ME coupling effect of single-phase multiferroic BFO. In addition, the Dzyaloshinskii-Moriya interaction (DMI) and the exchange coupling constants J for the BFO part of the HSs are simultaneously manipulated by …
Impact Of Phase Structure On Piezoelectric Properties Of Textured Lead-Free Ceramics, Xiaoyi Gao, Nannan Dong, Fangquan Xia, Qinghua Guo, Hua Hao, Hanxing Liu, Shujun Zhang
Impact Of Phase Structure On Piezoelectric Properties Of Textured Lead-Free Ceramics, Xiaoyi Gao, Nannan Dong, Fangquan Xia, Qinghua Guo, Hua Hao, Hanxing Liu, Shujun Zhang
Australian Institute for Innovative Materials - Papers
© 2020 by the authors. Licensee MDPI, Basel, Switzerland. The impact of phase structure on piezoelectric performances of textured Na0.5Bi0.5TiO3 (NBT) based lead-free ceramics was studied, including 0.88NBT-0.08K0.5Bi0.5TiO3-0.04BaTiO3 (88NBT) with morphotropic phase boundary (MPB) composition and 0.90NBT-0.07K0.5Bi0.5TiO3-0.03BaTiO3 (90NBT) with rhombohedral phase. Both textured ceramics exhibit a high Lotgering factor, being on the order of f~96%. The piezoelectric coefficients of the textured 88NBT and 90NBT ceramics are increased by 20% and 60%, respectively, comparing to their randomly oriented ceramics. The piezoelectric enhancement of 90NBT textured ceramic is three times higher than 88NBT, revealing the phase structure plays a significant role in …
Principals And Strategies For Constructing A Highly Reversible Zinc Metal Anode In Aqueous Batteries, Chao Han, Weijie Li, Hua-Kun Liu, Shi Xue Dou, Jiazhao Wang
Principals And Strategies For Constructing A Highly Reversible Zinc Metal Anode In Aqueous Batteries, Chao Han, Weijie Li, Hua-Kun Liu, Shi Xue Dou, Jiazhao Wang
Australian Institute for Innovative Materials - Papers
© 2020 Elsevier Ltd Among all the electrochemical energy storage systems, zinc-based batteries, such as zinc-air, zinc-metal, zinc-ion batteries, etc., have been recognized as an important group of candidates that could be potential alternatives to the currently dominant lead-acid and lithium-ion battery systems, because they have many unbeatable merits, including direct use of zinc metal as electrode; compatible with low cost, non-flammable, and environement-friendly aqueous electrolyte; assembly in ambient conditions; environmental benignity; and high safety. Currently, however, the capacitance, cycle life, and safety of zinc-based batteries were significantly degraded by zinc-water interaction problems that took place on the zinc metal …
Heterostructured Mo2c–Moo2 As Highly Efficient Catalyst For Rechargeable Li–O2 Battery, Chang Wu, Yuyang Hou, Jicheng Jiang, Haipeng Guo, Hua-Kun Liu, Jun Chen, Jiazhao Wang
Heterostructured Mo2c–Moo2 As Highly Efficient Catalyst For Rechargeable Li–O2 Battery, Chang Wu, Yuyang Hou, Jicheng Jiang, Haipeng Guo, Hua-Kun Liu, Jun Chen, Jiazhao Wang
Australian Institute for Innovative Materials - Papers
© 2020 Elsevier B.V. Li–O2 batteries has been widely investigated for its ultra-high capacity as next generation batteries. Nevertheless, some problems like sluggish kinetic reaction and instability hugely impede the practical use of Li–O2 batteries. In this work, Mo2C/MoO2@RGO heterostructures was fabricated by in-situ growth of Mo2C between MoO2 and RGO during calcination and being employed as cathode to explore the synergistic effect in Li–O2 batteries. As a result, Mo2C/MoO2@RGO exhibits good specific capacity with 2365 mAh g−1, high round-trip efficiency (89% at first cycle) and improved cycling performance. Density functional theory calculations indicated that the Mo2C/MoO2@RGO heterostructures have better …
On The Degradation Of Retained Austenite In Transformation Induced Plasticity Steel, Ilana Timokhina, Azdiar Adil Gazder, Jiangting Wang, Ilias Bikmukhametov, Peter Hodgson, Frank Niessen, Elena V. Pereloma
On The Degradation Of Retained Austenite In Transformation Induced Plasticity Steel, Ilana Timokhina, Azdiar Adil Gazder, Jiangting Wang, Ilias Bikmukhametov, Peter Hodgson, Frank Niessen, Elena V. Pereloma
Australian Institute for Innovative Materials - Papers
© 2020, The Minerals, Metals & Materials Society and ASM International. A transformation-induced plasticity steel was thermomechanically processed and then transformed to bainite at an isothermal transformation temperature of 723 K for 1800 seconds, which exceeds the time required for completion of the bainite transformation. The formation of lenticular-shaped carbides with a triclinic lattice and internal substructure was found after thermomechanical processing. After 16 years of storage at room temperature, the decomposition of retained austenite into pearlite was observed for the first time at this temperature.
Thermally Actuated Hydrogel Bead Based Braided Artificial Muscle, Bidita Binte Salahuddin, Holly Warren, Geoffrey M. Spinks
Thermally Actuated Hydrogel Bead Based Braided Artificial Muscle, Bidita Binte Salahuddin, Holly Warren, Geoffrey M. Spinks
Australian Institute for Innovative Materials - Papers
© 2020 IOP Publishing Ltd. Braided (McKibben) artificial muscles are one of the most attractive biomimetic actuators since they exhibit similar static and dynamic performance to skeletal muscles. One disadvantage of these systems, when intended for portable applications, is the need for a compressor or pump to provide pressurised fluid for muscle activation. An alternative is to use an expandable material, such as a hydrogel. This work investigates the development of hydrogel-based braided artificial muscles which can produce mechanical work through controlled hydrogel swelling in the presence of water. Hydrogel bead-filled braided meshes were prepared where no internal bladder was …
Graphitic Carbon Nitride With Thermally-Induced Nitrogen Defects: An Efficient Process To Enhance Photocatalytic H2production Performance, Guangzhi Dong, Yun Wen, Huiqing Fan, Chao Wang, Zhenxiang Cheng, Mingchang Zhang, Jiangwei Ma, Shujun Zhang
Graphitic Carbon Nitride With Thermally-Induced Nitrogen Defects: An Efficient Process To Enhance Photocatalytic H2production Performance, Guangzhi Dong, Yun Wen, Huiqing Fan, Chao Wang, Zhenxiang Cheng, Mingchang Zhang, Jiangwei Ma, Shujun Zhang
Australian Institute for Innovative Materials - Papers
Graphitic carbon nitride (g-C3N4, CN) with nitrogen vacancies was synthesized by a controlled thermal etching method in a semi-closed air-conditioning system. The defect-modified g-C3N4shows an excellent photocatalytic performance demonstrated by water splitting under visible light irradiation. With proper heat-treatment durations such as 2 h (CN2) and 4 h (CN4) at 550 °C, the hydrogen production rates significantly increase to 100 µmol h-1and 72 µmol h-1, which are 11 times and 8 times the rate of the pristine CN (8.8 µmol h-1) respectively. The excellent hydrogen production performance of nitrogen defect modified CN2 is due to the synergy effect of the …
Twins Or The Omega Phase: Which Is It In High Carbon Steels?, Gilberto Casillas, Wenwen Song, Azdiar Adil Gazder
Twins Or The Omega Phase: Which Is It In High Carbon Steels?, Gilberto Casillas, Wenwen Song, Azdiar Adil Gazder
Australian Institute for Innovative Materials - Papers
© 2020 Acta Materialia Inc. Electron diffraction coupled with aberration-corrected (AC) scanning transmission electron microscopy (STEM) is used to image, identify and confirm the structure producing double diffracted spots seen in electron diffraction patterns in twinned high-carbon steels. The experimental and simulated data show that regions comprising: (i) overlaps between a twin and the matrix or, (ii) overlapping twins, create projected structures that are similar to the ω phase observed in other metastable bcc systems. Thus, AC STEM is proficient in the definitive identification of twins in bcc high carbon steels or nanoscale phases in metastable bcc systems.
Understanding High-Rate K+-Solvent Co-Intercalation In Natural Graphite For Potassium-Ion Batteries, Lin Li, Luojia Liu, Zhe Hu, Yong Lu, Qiannan Liu, Song Jin, Qiu Zhang, Shuo Zhao, Shulei Chou
Understanding High-Rate K+-Solvent Co-Intercalation In Natural Graphite For Potassium-Ion Batteries, Lin Li, Luojia Liu, Zhe Hu, Yong Lu, Qiannan Liu, Song Jin, Qiu Zhang, Shuo Zhao, Shulei Chou
Australian Institute for Innovative Materials - Papers
© 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Graphite shows great potential as an anode material for rechargeable metal-ion batteries because of its high abundance and low cost. However, the electrochemical performance of graphite anode materials for rechargeable potassium-ion batteries needs to be further improved. Reported herein is a natural graphite with superior rate performance and cycling stability obtained through a unique K+-solvent co-intercalation mechanism in a 1 m KCF3SO3 diethylene glycol dimethyl ether electrolyte. The co-intercalation mechanism was demonstrated by ex situ Fourier transform infrared spectroscopy and in situ X-ray diffraction. Moreover, the structure of the [K-solvent]+ complexes …
Ultrahigh Electromechanical Coupling And Its Thermal Stability In (Na1/2bi1/2)Tio3-Based Lead-Free Single Crystals, Chao Chen, Li Yang, Xingan Jiang, Xiaokun Huang, Xiaoyi Gao, Na Tu, Kaizheng Shu, Xiangping Jiang, Shujun Zhang, Haosu Luo
Ultrahigh Electromechanical Coupling And Its Thermal Stability In (Na1/2bi1/2)Tio3-Based Lead-Free Single Crystals, Chao Chen, Li Yang, Xingan Jiang, Xiaokun Huang, Xiaoyi Gao, Na Tu, Kaizheng Shu, Xiangping Jiang, Shujun Zhang, Haosu Luo
Australian Institute for Innovative Materials - Papers
© 2020 by the authors. Licensee MDPI, Basel, Switzerland. In this work, we report the ultrahigh electromechanical coupling performance of NBT-6BT-KNN lead-free single crystal at room temperature. The thickness mode electromechanical coupling coefficient (kt) and the 31 mode electromechanical coupling coefficient (k31) reach 69.0% and 45.7%, respectively, which are superior to the PZT-5H lead-based ceramics of kt ~ 60% and k31~39%. In addition, the evolution of the crystal structure and domain morphology is revealed by Raman scattering spectra, a polarizing microscope and piezoelectric force microscopy characterization.
Confning Tio2 Nanotubes In Pecvd‑Enabled Graphene Capsules Toward Ultrafast K‑Ion Storage: In Situ Tem/Xrd Study And Dft Analysis, Jingsheng Cai, Ran Cai, Zhongti Sun, Xiangguo Wang, Nan Wei, Feng Xu, Yuanlong Shao, Peng Gao, Shi Xue Dou, Jingyu Sun
Confning Tio2 Nanotubes In Pecvd‑Enabled Graphene Capsules Toward Ultrafast K‑Ion Storage: In Situ Tem/Xrd Study And Dft Analysis, Jingsheng Cai, Ran Cai, Zhongti Sun, Xiangguo Wang, Nan Wei, Feng Xu, Yuanlong Shao, Peng Gao, Shi Xue Dou, Jingyu Sun
Australian Institute for Innovative Materials - Papers
© 2020, © 2020, The Author(s). Titanium dioxide (TiO2) has gained burgeoning attention for potassium-ion storage because of its large theoretical capacity, wide availability, and environmental benignity. Nevertheless, the inherently poor conductivity gives rise to its sluggish reaction kinetics and inferior rate capability. Here, we report the direct graphene growth over TiO2 nanotubes by virtue of chemical vapor deposition. Such conformal graphene coatings effectively enhance the conductive environment and well accommodate the volume change of TiO2 upon potassiation/depotassiation. When paired with an activated carbon cathode, the graphene-armored TiO2 nanotubes allow the potassium-ion hybrid capacitor full cells to harvest an energy/power …
Nodal Ring Spin Gapless Semiconductor: New Member Of Spintronic Materials, Tie Yang, Zhenxiang Cheng, Xiaotian Wang, Xiaolin Wang
Nodal Ring Spin Gapless Semiconductor: New Member Of Spintronic Materials, Tie Yang, Zhenxiang Cheng, Xiaotian Wang, Xiaolin Wang
Australian Institute for Innovative Materials - Papers
Both spin gapless semiconductors (SGSs) and nodal ring states (NRSs) have aroused great scientific interest in recent years due to their unique electronic properties and high application potential. However, since their advent, all SGSs and NRSs have been predicted in independent materials. In this work, we proposed a novel type of material, nodal ring spin gapless semiconductor (NRSGS), which combines both states of the SGSs and NRSs. The synthesized material Mg2VO4 is selected as a potential candidate. Detailed band structure analysis reveals that there are gapless crossings in the spin-up direction, which are from multiple topological nodal rings located exactly …
An In-Depth Study Of Zn Metal Surface Chemistry For Advanced Aqueous Zn-Ion Batteries, Junnan Hao, Bo Li, Xiaolong Li, Xiaohui Zeng, Shilin Zhang, Fuhua Yang, Sailin Liu, Dan Li, Chao Wu, Zaiping Guo
An In-Depth Study Of Zn Metal Surface Chemistry For Advanced Aqueous Zn-Ion Batteries, Junnan Hao, Bo Li, Xiaolong Li, Xiaohui Zeng, Shilin Zhang, Fuhua Yang, Sailin Liu, Dan Li, Chao Wu, Zaiping Guo
Australian Institute for Innovative Materials - Papers
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Although Zn metal has been regarded as the most promising anode for aqueous batteries, it persistently suffers from serious side reactions and dendrite growth in mild electrolyte. Spontaneous Zn corrosion and hydrogen evolution damage the shelf life and calendar life of Zn-based batteries, severely affecting their industrial applications. Herein, a robust and homogeneous ZnS interphase is built in situ on the Zn surface by a vapor–solid strategy to enhance Zn reversibility. The thickness of the ZnS film is controlled via the treatment temperature, and the performance of the protected Zn electrode …
Recent Progress On Understanding And Constructing Reliable Na Anode For Aprotic Na-O2 Batteries: A Mini Review, Shuo Zhao, Lin Li, Fujun Li, Shulei Chou
Recent Progress On Understanding And Constructing Reliable Na Anode For Aprotic Na-O2 Batteries: A Mini Review, Shuo Zhao, Lin Li, Fujun Li, Shulei Chou
Australian Institute for Innovative Materials - Papers
© 2020 The Authors Aprotic Na-O2 batteries attract increasing attention for the low charging/discharging overpotentials, high energy density, and low cost. Significant progress has been achieved in the battery system, but challenges remain in constructing reliable Na anodes. This review presents an overview of the fundamental understanding of Na anodes in aprotic Na-O2 batteries, including chemical reactivity of Na metal and dendrite formation mechanism. The constructing strategies are summarized as mechanical reinforcement of separators, electrolyte modifications, and electrode structure and material design. Perspectives are envisioned for the further development of durable Na anodes for aprotic Na-O2 batteries.
Optimum Electrical And Dielectric Performance Of Multi-Walled Carbon Nanotubes Doped Disposed Transformer Oil, Nur Suhaimi, Muhamad Din, Abdul Rahman, Mardhiah Hamid, Nur Amin, Wan Zamri, Jian Li Wang
Optimum Electrical And Dielectric Performance Of Multi-Walled Carbon Nanotubes Doped Disposed Transformer Oil, Nur Suhaimi, Muhamad Din, Abdul Rahman, Mardhiah Hamid, Nur Amin, Wan Zamri, Jian Li Wang
Australian Institute for Innovative Materials - Papers
© 2020 by the authors. This paper intends to prepare a nanofluid sample by suspending Multi-walled Carbon Nanotubes (MWCNTs) at 0.005g/L concentration and analyze the behavior of electrical and dielectric properties based on the International Electrotechnical Commision test method. In order to validate the effectiveness of MWCNT nanofluid, alternating current breakdown voltage (BDV), negative polarity lightning impulse (LI), dielectric permittivity, dissipation factor (DF), DC resistivity and Raman structural measurement are executed accordingly. In the following, an analysis of the statistical distribution using the two-parameterWeibull distribution law of BDV and LI are evaluated at four experimental conditions to predict the probability …
Diffused Morphotropic Phase Boundary In Relaxor-Pbtio3crystals: High Piezoelectricity With Improved Thermal Stability, Gang Liu, Lingping Kong, Qingyang Hu, Shujun Zhang
Diffused Morphotropic Phase Boundary In Relaxor-Pbtio3crystals: High Piezoelectricity With Improved Thermal Stability, Gang Liu, Lingping Kong, Qingyang Hu, Shujun Zhang
Australian Institute for Innovative Materials - Papers
© 2020 Author(s). Solid solution ferroelectrics are the most widely used piezoelectric material for numerous electromechanical applications, including sensors, actuators, and transducers. A milestone in ferroelectric research is the discovery of the morphotropic phase boundary that was first reported in Pb(ZrxTi1-x)O3, which has been extensively solicited to improve the performance of various solid solution ferroelectrics, including those having the highest piezoelectricity known today. However, due to the inherent correlation between phase transition and thermodynamic imbalance, the efforts of building the phase boundary encounter the challenge that high performance materials are generally accompanied by property instability. Here, we report a comprehensive …
Unveiling The Ferrielectric Nature Of Pbzro3-Based Antiferroelectric Materials, Zhengqian Fu, Xuefeng Chen, Zhenqin Li, Tengfei Hu, Linlin Zhang, Ping Lu, Shujun Zhang, Genshui Wang, Xianlin Dong, Fangfang Xu
Unveiling The Ferrielectric Nature Of Pbzro3-Based Antiferroelectric Materials, Zhengqian Fu, Xuefeng Chen, Zhenqin Li, Tengfei Hu, Linlin Zhang, Ping Lu, Shujun Zhang, Genshui Wang, Xianlin Dong, Fangfang Xu
Australian Institute for Innovative Materials - Papers
© 2020, The Author(s). Benefitting from the reversible phase transition between antiferroelectric and ferroelectric states, antiferroelectric materials have recently received widespread attentions for energy storage applications. Antiferroelectric configuration with specific antiparallel dipoles has been used to establish antiferroelectric theories and understand its characteristic behaviors. Here, we report that the so-called antiferroelectric (Pb,La)(Zr,Sn,Ti)O3 system is actually ferrielectric in nature. We demonstrate different ferrielectric configurations, which consists of ferroelectric ordering segments with either magnitude or angle modulation of dipoles. The ferrielectric configurations are mainly contributed from the coupling between A-cations and O-anions, and their displacement behavior is dependent largely on the chemical …
3d Printing Of Cytocompatible Graphene/Alginate Scaffolds For Mimetic Tissue Constructs, Jianfeng Li, Xiao Liu, Jeremy Micah Crook, Gordon G. Wallace
3d Printing Of Cytocompatible Graphene/Alginate Scaffolds For Mimetic Tissue Constructs, Jianfeng Li, Xiao Liu, Jeremy Micah Crook, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
© Copyright © 2020 Li, Liu, Crook and Wallace. Tissue engineering, based on a combination of 3D printing, biomaterials blending and stem cell technology, offers the potential to establish customized, transplantable autologous implants using a patient‘s own cells. Graphene, as a two-dimensional (2D) version of carbon, has shown great potential for tissue engineering. Here, we describe a novel combination of graphene with 3D printed alginate (Alg)-based scaffolds for human adipose stem cell (ADSC) support and osteogenic induction. Alg printing was enabled through addition of gelatin (Gel) that was removed after printing, and the 3D structure was then coated with graphene …
A Self‐Assembled Co2 Reduction Electrocatalyst: Posy‐Bouquet‐Shaped Gold‐Polyaniline Core‐Shell Nanocomposite, Amruthalakshmi Vijayakumar, Yong Zhao, Jinshuo Zou, Kezhong Wang, Chong Yong Lee, Douglas Macfarlane, Caiyun Wang, Gordon G. Wallace
A Self‐Assembled Co2 Reduction Electrocatalyst: Posy‐Bouquet‐Shaped Gold‐Polyaniline Core‐Shell Nanocomposite, Amruthalakshmi Vijayakumar, Yong Zhao, Jinshuo Zou, Kezhong Wang, Chong Yong Lee, Douglas Macfarlane, Caiyun Wang, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
© 2020 Wiley-VCH GmbH Here it was demonstrated that the decoration of gold (Au) with polyaniline is an effective approach in increasing its electrocatalytic reduction of CO2 to CO. The core-shell-structured gold-polyaniline (Au−PANI) nanocomposite delivered a CO2-to-CO conversion efficiency of 85 % with a high current density of 11.6 mA cm−2. The polyaniline shell facilitated CO2 adsorption, and the subsequent formation of reaction intermediates on the gold core contributed to the high efficiency observed.
Design, Modeling And Control Of A 3d Printed Monolithic Soft Robotic Finger With Embedded Pneumatic Sensing Chambers, Charbel Tawk, Hao Zhou, Emre Sariyildiz, Marc In Het Panhuis, Geoffrey M. Spinks, Gursel Alici
Design, Modeling And Control Of A 3d Printed Monolithic Soft Robotic Finger With Embedded Pneumatic Sensing Chambers, Charbel Tawk, Hao Zhou, Emre Sariyildiz, Marc In Het Panhuis, Geoffrey M. Spinks, Gursel Alici
Australian Institute for Innovative Materials - Papers
IEEE This paper presents a directly 3D printed soft monolithic robotic finger with embedded soft pneumatic sensing chambers (PSC) as position and touch sensors. The monolithic finger was fabricated using a low-cost and open-source fused deposition modeling (FDM) 3D printer that employs an off-the-shelf soft and flexible commercially available thermoplastic polyurethane (TPU). A single soft hinge with an embedded PSC was optimized using finite element modeling (FEM) and a hyperelastic material model to obtain a linear relationship between the internal change in the volume of its PSC and the corresponding input mechanical modality, to minimize its bending stiffness and to …
Fully 3d Printed Soft Microactuators For Soft Microrobotics, Manav Tyagi, Geoffrey M. Spinks, Edwin W. Jager
Fully 3d Printed Soft Microactuators For Soft Microrobotics, Manav Tyagi, Geoffrey M. Spinks, Edwin W. Jager
Australian Institute for Innovative Materials - Papers
© 2020 IOP Publishing Ltd. The feasibility of additive manufacturing actuating microstructures and microdevices with small dimension is presented. Using a custom-built extrusion 3D printer and CAD model of the device structure, bilayer microactuators driven by hydrogels are fabricated down to a size of 300 × 1000 μm2, with a minimum thickness of 30 μm. To explore the limitations of the 3D printing process, microactuators with a width of 300 μm and lengths ranging from 1000 to 5000 μm are manufactured and thereafter operated to demonstrate the feasibility of the process. Similarly, microrobotic devices consisting of a passive rigid body …
Alkali-Metal Sulfide As Cathodes Toward Safe And High-Capacity Metal (M = Li, Na, K) Sulfur Batteries, Huiling Yang, Binwei Zhang, Yunxiao Wang, Konstantin K. Konstantinov, Hua-Kun Liu, Shi Xue Dou
Alkali-Metal Sulfide As Cathodes Toward Safe And High-Capacity Metal (M = Li, Na, K) Sulfur Batteries, Huiling Yang, Binwei Zhang, Yunxiao Wang, Konstantin K. Konstantinov, Hua-Kun Liu, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
© 2020 Wiley-VCH GmbH Rechargeable alkali-metal–sulfur (M–S) batteries, because of their high energy density and low cost, have been recognized as one of the most promising next-generation energy storage technologies. Nevertheless, the dissolution of metal polysulfides in organic liquid electrolytes and safety issues related to the metal anodes are greatly hindering the development of the M–S batteries. Alkali-metal sulfides (M2Sx) are emerging as cathode materials, which can pair with various safe nonalkali-metal anodes, such as silicon and tin. As a result, the combined M2Sx cathode-based M–S batteries can achieve high capacity as well as safety, thereby providing a more feasible …
3d Printed Soft Pneumatic Bending Sensing Chambers For Bilateral And Remote Control Of Soft Robotic Systems, Charbel Tawk, Marc In Het Panhuis, Geoffrey M. Spinks, Gursel Alici
3d Printed Soft Pneumatic Bending Sensing Chambers For Bilateral And Remote Control Of Soft Robotic Systems, Charbel Tawk, Marc In Het Panhuis, Geoffrey M. Spinks, Gursel Alici
Australian Institute for Innovative Materials - Papers
© 2020 IEEE. This work reports on soft pneumatic bending sensing chambers that are directly 3D printed without requiring any support material and postprocessing using a low-cost and open-source fused deposition modeling (FDM) 3D printer and a commercially available soft thermoplastic polyurethane (TPU). These bending sensing chambers have multiple advantages including very fast response to any change in their internal volume, linearity, negligible hysteresis, repeatability, reliability, stability over time, long lifetime and very low power consumption. The performance of these soft sensing chambers is accurately predicted and optimized using finite element modeling (FEM) and a hyperelastic material model for the …
Topographical And Compositional Engineering Of Core-Shell Ni@Pt Orr Electro-Catalysts, Gerard Leteba, David R. G Mitchell, Pieter Levecque, Eric Van Steen, Candace Lang
Topographical And Compositional Engineering Of Core-Shell Ni@Pt Orr Electro-Catalysts, Gerard Leteba, David R. G Mitchell, Pieter Levecque, Eric Van Steen, Candace Lang
Australian Institute for Innovative Materials - Papers
© 2020 The Royal Society of Chemistry. Complex faceted geometries and compositional anisotropy in alloy nanoparticles (NPs) can enhance catalytic performance. We report on the preparation of binary PtNi NPs via a co-thermolytic approach in which we optimize the synthesis variables, which results in significantly improved catalytic performance. We used scanning transmission electron microscopy to characterise the range of morphologies produced, which included spherical and concave cuboidal core-shell structures. Electrocatalytic activity was evaluated using a rotating disc electrode (1600 rpm) in 0.1 M HClO4; the electrocatalytic performance of these Ni@Pt NPs showed significant (∼11-fold) improvement compared to a commercial Pt/C …
Artificial Muscles From Hybrid Carbon Nanotube-Polypyrrole-Coated Twisted And Coiled Yarns, Shazed Aziz, Jose Martinez, Javad Foroughi, Geoffrey M. Spinks, Edwin W. Jager
Artificial Muscles From Hybrid Carbon Nanotube-Polypyrrole-Coated Twisted And Coiled Yarns, Shazed Aziz, Jose Martinez, Javad Foroughi, Geoffrey M. Spinks, Edwin W. Jager
Australian Institute for Innovative Materials - Papers
Electrochemically or electrothermally driven twisted/coiled carbon nanotube (CNT) yarn actuators are interesting artificial muscles for wearables as they can sustain high stress. However, due to high fabrication costs, these yarns have limited their application in smart textiles. An alternative approach is to use off-the-shelf yarns and coat them with conductive polymers that deliver high actuation properties. Here, novel hybrid textile yarns are demonstrated that combine CNT and an electroactive polypyrrole coating to provide both high strength and good actuation properties. CNT-coated polyester yarns are twisted and coiled and subjected to electrochemical coating of polypyrrole to obtain the hierarchical soft actuators. …
Highly Flexible Reduced Graphene Oxide@Polypyrrole-Polyethylene Glycol Foam For Supercapacitors, Chaoyue Cai, Jialong Fu, Chengyan Zhang, Cheng Wang, Rui Sun, Shufang Guo, Fan Zhang, Mingyan Wang, Yuqing Liu, Jun Chen
Highly Flexible Reduced Graphene Oxide@Polypyrrole-Polyethylene Glycol Foam For Supercapacitors, Chaoyue Cai, Jialong Fu, Chengyan Zhang, Cheng Wang, Rui Sun, Shufang Guo, Fan Zhang, Mingyan Wang, Yuqing Liu, Jun Chen
Australian Institute for Innovative Materials - Papers
© 2020 The Royal Society of Chemistry. A flexible and free-standing 3D reduced graphene oxide@polypyrrole-polyethylene glycol (RGO@PPy-PEG) foam was developed for wearable supercapacitors. The device was fabricated sequentially, beginning with the electrodeposition of PPy in the presence of a PEG-borate on a sacrificial Ni foam template, followed by a subsequent GO wrapping and chemical reduction process. The 3D RGO@PPy-PEG foam electrode showed excellent electrochemical properties with a large specific capacitance of 415 F g-1 and excellent long-term stability (96% capacitance retention after 8000 charge-discharge cycles) in a three electrode configuration. An assembled (two-electrode configuration) symmetric supercapacitor using RGO@PPy-PEG electrodes exhibited …
Fabrication Of Heterostructured Uio-66-Nh2 /Cnts With Enhanced Activity And Selectivity Over Photocatalytic Co2 Reduction, Xiaojun Wang, Guorui Yang, Guodong Chai, Muhammad Nasir, Silan Wang, Xing Zheng, Caiyun Wang, Wei Yan
Fabrication Of Heterostructured Uio-66-Nh2 /Cnts With Enhanced Activity And Selectivity Over Photocatalytic Co2 Reduction, Xiaojun Wang, Guorui Yang, Guodong Chai, Muhammad Nasir, Silan Wang, Xing Zheng, Caiyun Wang, Wei Yan
Australian Institute for Innovative Materials - Papers
© 2020 Hydrogen Energy Publications LLC Developing photocatalysts with superior efficiency and selectivity is an important issue for photocatalytic converting CO2. Hierarchically heterostructured one-dimensional nanomaterials represent a kind of promising catalysts for photocatalytic CO2 reduction on account of the high surface area and synthetic effect between different components. Herein, we synthesized UIO-66-NH2/carbon nanotubes (CNTs) heterostructures via a hydrothermal method, and investigated their photocatalytic performance. The element mapping, X-ray diffraction, and X-ray photoelectron spectroscopy collectively confirmed that the UIO-66-NH2 was successfully loaded on the surface of the CNTs. The specific surface area of the UIO-66-NH2/CNTs is 1.5 times higher than that …
Highly Ordered Macroporous Dual-Element-Doped Carbon From Metal-Organic Frameworks For Catalyzing Oxygen Reduction, Wei Xia, Michelle Hunter, Jiayu Wang, Guoxun Zhu, Sarah Warren, Yingji Zhao, Yoshio Bando, Debra Searles, Yusuke Yamauchi, Jing Tang
Highly Ordered Macroporous Dual-Element-Doped Carbon From Metal-Organic Frameworks For Catalyzing Oxygen Reduction, Wei Xia, Michelle Hunter, Jiayu Wang, Guoxun Zhu, Sarah Warren, Yingji Zhao, Yoshio Bando, Debra Searles, Yusuke Yamauchi, Jing Tang
Australian Institute for Innovative Materials - Papers
© The Royal Society of Chemistry 2020. Multiple heteroatom-doped carbons with 3D ordered macro/meso-microporous structures have not been realized by simple carbonization of metal-organic frameworks (MOFs). Herein, ordered macroporous phosphorus- and nitrogen-doped carbon (M-PNC) is prepared successfully by carbonization of double-solvent-induced MOF/polystyrene sphere (PS) precursors accompanied with spontaneous removal of the PS template, followed by post-doping. M-PNC shows a high specific surface area of 837 m2g−1, nitrogen doping of 3.17 at%, and phosphorus doping of 1.12 at%. Thanks to the hierarchical structure, high specific surface area, and multiple heteroatom-doping, M-PNC exhibits unusual catalytic activity as an electrocatalyst for the oxygen …
Constructing Phase Boundary In Agnbo3 Antiferroelectrics: Pathway Simultaneously Achieving High Energy Density And Efficiency, Nengneng Luo, Kai Han, Matthew Cabral, Xiaozhou Liao, Shujun Zhang, Changzhong Liao, Guangzu Zhang, Xiyong Chen, Qin Feng, Jing Li, Yuezhou Wei
Constructing Phase Boundary In Agnbo3 Antiferroelectrics: Pathway Simultaneously Achieving High Energy Density And Efficiency, Nengneng Luo, Kai Han, Matthew Cabral, Xiaozhou Liao, Shujun Zhang, Changzhong Liao, Guangzu Zhang, Xiyong Chen, Qin Feng, Jing Li, Yuezhou Wei
Australian Institute for Innovative Materials - Papers
© 2020, The Author(s). Dielectric capacitors with high energy storage density (Wrec) and efficiency (η) are in great demand for high/pulsed power electronic systems, but the state-of-the-art lead-free dielectric materials are facing the challenge of increasing one parameter at the cost of the other. Herein, we report that high Wrec of 6.3 J cm-3 with η of 90% can be simultaneously achieved by constructing a room temperature M2–M3 phase boundary in (1-x)AgNbO3-xAgTaO3 solid solution system. The designed material exhibits high energy storage stability over a wide temperature range of 20–150 °C and excellent cycling reliability up to 106 cycles. All …
Lead-Free Antiferroelectric Agnbo3: Phase Transitions And Structure Engineering For Dielectric Energy Storage Applications, Jing Gao, Qiang Li, Shujun Zhang, Jing-Feng Li
Lead-Free Antiferroelectric Agnbo3: Phase Transitions And Structure Engineering For Dielectric Energy Storage Applications, Jing Gao, Qiang Li, Shujun Zhang, Jing-Feng Li
Australian Institute for Innovative Materials - Papers
© 2020 Author(s). The development of electronic materials for storing electrical energy is a thriving research field, where the materials used in batteries, supercapacitors, dielectric capacitors have attracted extensive interest in last decades. The dielectric capacitors showing unique characteristics such as high power density and large charge/discharge rate have been actively studied, where the antiferroelectrics demonstrate great potentials for dielectric energy storage applications by storing and releasing energy upon a reversible electric-field induced antiferroelectric-ferroelectric phase transition. Recently, lead-free antiferroelectric AgNbO3 has emerged as a promising candidate to substitute conventional lead-based antiferroelectrics (such as PbZrO3) in energy storage applications. The phase …