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Articles 1 - 30 of 4864

Full-Text Articles in Physical Sciences and Mathematics

Reference Phantom Method For Ultrasonic Imaging Of Thin Dynamic Constructs, Andres Ruland, James M. Hill, Gordon G. Wallace Jan 2021

Reference Phantom Method For Ultrasonic Imaging Of Thin Dynamic Constructs, Andres Ruland, James M. Hill, Gordon G. Wallace

Australian Institute for Innovative Materials - Papers

Quantitative ultrasound has a great potential for the non-destructive evaluation of tissue engineered constructs, where the local attenuation and the integrated backscatter coefficient (IBC) can be used for monitoring the development of biological processes. The local determination of both parameters can be achieved using the reference phantom method (RPM). However, its accuracy can be affected when evaluating constructs of evolving sound speed, attenuation and thickness, for example, when evaluating biodegradable hydrogels developing neocartilage. To assess the feasibility of using the RPM under such dynamic conditions while employing a 50-MHz transducer, we conducted a series of experiments on 3-mm-thick acellular hydrogels …

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In Situ Simultaneous Encapsulation Of Defective Mos2 Nanolayers And Sulfur Nanodots Into Span Fibers For High Rate Sodium-Ion Batteries, Fenqiang Luo, Xiaoshan Feng, Lingxing Zeng, Liangxu Lin, Xinye Li, Biyu Kang, Liren Xiao, Qinghua Chen, Mingdeng Wei, Qingrong Qian Jan 2021

In Situ Simultaneous Encapsulation Of Defective Mos2 Nanolayers And Sulfur Nanodots Into Span Fibers For High Rate Sodium-Ion Batteries, Fenqiang Luo, Xiaoshan Feng, Lingxing Zeng, Liangxu Lin, Xinye Li, Biyu Kang, Liren Xiao, Qinghua Chen, Mingdeng Wei, Qingrong Qian

Australian Institute for Innovative Materials - Papers

© 2020 Elsevier B.V. Molybdenum sulfide (MoS2) with layered structure has emerged as a promising anode material for sodium ion batteries (SIBs) in light of its particular surface chemistry and physical structures. However, the MoS2-based SIBs usually suffered from the weaknesses of the low rate capability and poor cycling stability induced by the sluggish kinetics of Na+ intercalation and the diffluent discharge products. Herein, the defective MoS2 nanocrystals and sulfur nanodots simultaneously embedded in sulfurized polyacrylonitrile (SPAN) fibers were fabricated via an electrospunning technology, followed by a simple annealing treatment. The unique architecture, in which MoS2 nanolayers and sulfur nanodots …

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Air Quality Near Busy Australian Roads Up To 10 Times Worse Than Official Figures, Hugh I. Forehead Jan 2020

Air Quality Near Busy Australian Roads Up To 10 Times Worse Than Official Figures, Hugh I. Forehead

SMART Infrastructure Facility - Papers

Air quality on Australia’s roads matters. On any given day (when we’re not in lockdown) people meet, commute, exercise, shop and walk with children near busy streets. But to date, air quality monitoring at roadsides has been inadequate. I and my colleagues wanted to change that. Using materials purchased from electronics and hardware stores for around A$150, we built our own air quality monitors. Our newly published research reveals how our devices detected particulate pollution at busy intersections at levels ten times worse than background levels measured at official air monitoring stations.

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Elucidating The Performance Of An Integrated Laccase- And Persulfate-Assisted Process For Degradation Of Trace Organic Contaminants (Trocs), Muhammad Bilal Asif, Jason P. Van De Merwe, Frederic Leusch, Biplob Pramanik, William E. Price, Faisal I. Hai Jan 2020

Elucidating The Performance Of An Integrated Laccase- And Persulfate-Assisted Process For Degradation Of Trace Organic Contaminants (Trocs), Muhammad Bilal Asif, Jason P. Van De Merwe, Frederic Leusch, Biplob Pramanik, William E. Price, Faisal I. Hai

SMART Infrastructure Facility - Papers

2020 The Royal Society of Chemistry.. Laccase-catalysed degradation is a promising technology for the degradation of trace organic contaminants (TrOCs). However, depending on their physicochemical properties (e.g., chemical structures), non-phenolic TrOCs appear to be resistant to laccase-catalysed degradation, thus requiring an additional treatment process. In this study, the performance of an integrated laccase and persulfate (PS) mediated oxidation process was explored and elucidated for the first time. Compared to that achieved during treatment with laccase alone, the addition of PS at 1-10 mM concentration into batch enzymatic bioreactors showed concentration-dependent improvement in the degradation of the five TrOCs selected, namely …

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Sharkeye: Real-Time Autonomous Personal Shark Alerting Via Aerial Surveillance, Robert A. Gorkin Iii, Kye Adams, Matthew J. Berryman, Sam Aubin, Wanqing Li, Andrew R. Davis, Johan Barthelemy Jan 2020

Sharkeye: Real-Time Autonomous Personal Shark Alerting Via Aerial Surveillance, Robert A. Gorkin Iii, Kye Adams, Matthew J. Berryman, Sam Aubin, Wanqing Li, Andrew R. Davis, Johan Barthelemy

SMART Infrastructure Facility - Papers

While aerial shark spotting has been a standard practice for beach safety for decades, new technologies offer enhanced opportunities, ranging from drones/unmanned aerial vehicles (UAVs) that provide new viewing capabilities, to new apps that provide beachgoers with up-to-date risk analysis before entering the water. This report describes the Sharkeye platform, a first-of-its-kind project to demonstrate personal shark alerting for beachgoers in the water and on land, leveraging innovative UAV image collection, cloud-hosted machine learning detection algorithms, and reporting via smart wearables. To execute, our team developed a novel detection algorithm trained via machine learning based on aerial footage of real …

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Towards Agent-Based Traffic Simulation Using Live Data From Sensors For Smart Cities, Johan Barthelemy, Yan Qian, Pascal Perez Jan 2020

Towards Agent-Based Traffic Simulation Using Live Data From Sensors For Smart Cities, Johan Barthelemy, Yan Qian, Pascal Perez

SMART Infrastructure Facility - Papers

The Smart City and Internet-of-Things revolutions enable the collection of various types of data in real-time through sensors. This data can be used to improve the decision tools and simulations used by city planners. This paper presents a new framework for real-time traffic simulation integrating an agent-based methodology with live CCTV and other sensor data while respecting the privacy regulations. The framework simulates traffic flows of pedestrians, vehicles and bicycles and their interactions. The approach has been applied in Liverpool (NSW, Australia) showing promising preliminary results and can easily ingest additional sensor data, e.g. air quality.

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A Case Study Of Wifi Sniffing Performance Evaluation, Yan Li, Johan Barthelemy, Shuai Sun, Pascal Perez, Bill Moran Jan 2020

A Case Study Of Wifi Sniffing Performance Evaluation, Yan Li, Johan Barthelemy, Shuai Sun, Pascal Perez, Bill Moran

SMART Infrastructure Facility - Papers

Mobile devices regularly broadcast WiFi probe requests in order to discover available proximal WiFi access points for connection. A probe request, sent automatically in the active scanning mode, consisting of the MAC address of the device expresses an advertisement of its presence. A real-time wireless sniffing system is able to sense WiFi packets and analyse wireless traffic. This provides an opportunity to obtain insights into the interaction between the humans carrying the mobile devices and the environment. Susceptibility to loss of the wireless data transmission is an important limitation on this idea, and this is complicated by the lack of …

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Indoor Navigation And Mapping: Performance Analysis Of Uwb-Based Platform Positioning, A Masiero, Harris Perakis, Jelena Gabela, Charles Toth, Vassilis Gikas, Guenther Retscher, Salil Goel, Allison Kealy, Z Koppányi, W Blaszczak-Bak, Yan Li, Dorota Grejner-Brzezinska Jan 2020

Indoor Navigation And Mapping: Performance Analysis Of Uwb-Based Platform Positioning, A Masiero, Harris Perakis, Jelena Gabela, Charles Toth, Vassilis Gikas, Guenther Retscher, Salil Goel, Allison Kealy, Z Koppányi, W Blaszczak-Bak, Yan Li, Dorota Grejner-Brzezinska

SMART Infrastructure Facility - Papers

© 2020 International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives. The increasing demand for reliable indoor navigation systems is leading the research community to investigate various approaches to obtain effective solutions usable with mobile devices. Among the recently proposed strategies, Ultra-Wide Band (UWB) positioning systems are worth to be mentioned because of their good performance in a wide range of operating conditions. However, such performance can be significantly degraded by large UWB range errors; mostly, due to non-line-of-sight (NLOS) measurements. This paper considers the integration of UWB with vision to support navigation and mapping …

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Artificial Muscles From Hybrid Carbon Nanotube-Polypyrrole-Coated Twisted And Coiled Yarns, Shazed Aziz, Jose Martinez, Javad Foroughi, Geoffrey M. Spinks, Edwin W. Jager Jan 2020

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. …

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Improved Na Storage And Coulombic Efficiency In Tip2o7@C Microflowers For Sodium Ion Batteries, Jun Pan, Nana Wang, Lili Li, Feng Zhang, Zhenjie Cheng, Yanlu Li, Jian Yang, Yitai Qian Jan 2020

Improved Na Storage And Coulombic Efficiency In Tip2o7@C Microflowers For Sodium Ion Batteries, Jun Pan, Nana Wang, Lili Li, Feng Zhang, Zhenjie Cheng, Yanlu Li, Jian Yang, Yitai Qian

Australian Institute for Innovative Materials - Papers

© 2020, Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature. Ti-based anode materials in sodium ion batteries have attracted extensive interests due to its abundant resources, low toxicity, easy synthesis and long cycle life. However, low Coulombic efficiency and limited specific capacity affect their applications. Here, cubic-phase TiP2O7 is examined as anode materials, using in-situ/ex-situ characterization techniques. It is concluded that the redox reactions of Ti4+/Ti3+ and Ti3+/Ti0 consecutively occur during the discharge/charge processes, both of which are highly reversible. These reactions make the specific capacity of TiP2O7 even higher than the case of TiO2 that only …

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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 Jan 2020

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 …

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Promoted Photocharge Separation In 2d Lateral Epitaxial Heterostructure For Visible-Light-Driven Co2 Photoreduction, Li Wang, Xue Zhao, Dongdong Lv, Chuangwei Liu, Weihong Lai, Chunyi Sun, Zhongmin Su, Xun Xu, Weichang Hao, Shi Xue Dou, Yi Du Jan 2020

Promoted Photocharge Separation In 2d Lateral Epitaxial Heterostructure For Visible-Light-Driven Co2 Photoreduction, Li Wang, Xue Zhao, Dongdong Lv, Chuangwei Liu, Weihong Lai, Chunyi Sun, Zhongmin Su, Xun Xu, Weichang Hao, Shi Xue Dou, Yi Du

Australian Institute for Innovative Materials - Papers

Photocarrier recombination remains a big barrier for the improvement of solar energy conversion efficiency. For 2D materials, construction of heterostructures represents an efficient strategy to promote photoexcited carrier separation via an internal electric field at the heterointerface. However, due to the difficulty in seeking two components with suitable crystal lattice mismatch, most of the current 2D heterostructures are vertical heterostructures and the exploration of 2D lateral heterostructures is scarce and limited. Here, lateral epitaxial heterostructures of BiOCl @ Bi2O3 at the atomic level are fabricated via sonicating-assisted etching of Cl in BiOCl. This unique lateral heterostructure expedites …

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Nanofibers-Based Piezoelectric Energy Harvester For Self-Powered Wearable Technologies, Fatemeh Mokhtari, Mahnaz Shamshirsaz, Masoud Latifi, Javad Foroughi Jan 2020

Nanofibers-Based Piezoelectric Energy Harvester For Self-Powered Wearable Technologies, Fatemeh Mokhtari, Mahnaz Shamshirsaz, Masoud Latifi, Javad Foroughi

Australian Institute for Innovative Materials - Papers

The demands for wearable technologies continue to grow and novel approaches for powering these devices are being enabled by the advent of new energy materials and novel manufacturing strategies. In addition, decreasing the energy consumption of portable electronic devices has created a huge demand for the development of cost-effective and environment friendly alternate energy sources. Energy harvesting materials including piezoelectric polymer with its special properties make this demand possible. Herein, we develop a flexible and lightweight nanogenerator package based on polyvinyledene fluoride (PVDF)/LiCl electrospun nanofibers. The piezoelectric performance of the developed nanogenator is investigated to evaluate effect of the thickness …

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Controlled Hydrogenation Into Defective Interlayer Bismuth Oxychloride Via Vacancy Engineering, Dandan Cui, Kang Xu, Xingan Dong, Dongdong Lv, Fan Dong, Weichang Hao, Yi Du, Jun Chen Jan 2020

Controlled Hydrogenation Into Defective Interlayer Bismuth Oxychloride Via Vacancy Engineering, Dandan Cui, Kang Xu, Xingan Dong, Dongdong Lv, Fan Dong, Weichang Hao, Yi Du, Jun Chen

Australian Institute for Innovative Materials - Papers

Hydrogenation is an effective approach to improve the performance of photocatalysts within defect engineering methods. The mechanism of hydrogenation and synergetic effects between hydrogen atoms and local electronic structures, however, remain unclear due to the limits of available photocatalytic systems and technical barriers to observation and measurement. Here, we utilize oxygen vacancies as residential sites to host hydrogen atoms in a layered bismuth oxychloride material containing defects. It is confirmed theoretically and experimentally that the hydrogen atoms interact with the vacancies and surrounding atoms, which promotes the separati30on and transfer processes of photo-generated carriers via the resulting band structure. The …

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A Wearable Sensor For The Detection Of Sodium And Potassium In Human Sweat During Exercise, Paolo Pirovano, Matthew Dorrian, Akshay Shinde, Andrew Donohoe, Aidan Brady, Niall Moyna, Gordon G. Wallace, Dermot Diamond, Margaret Mccaul Jan 2020

A Wearable Sensor For The Detection Of Sodium And Potassium In Human Sweat During Exercise, Paolo Pirovano, Matthew Dorrian, Akshay Shinde, Andrew Donohoe, Aidan Brady, Niall Moyna, Gordon G. Wallace, Dermot Diamond, Margaret Mccaul

Australian Institute for Innovative Materials - Papers

© 2020 The Author(s) The SwEatch platform, a wearable sensor for sampling and measuring the concentration of electrolytes in human sweat in real time, has been improved in order to allow the sensing of two analytes. The solid contact ion-sensitive electrodes (ISEs) for the detection of Na+ and K+ have been developed in two alternative formulations, containing either poly(3,4-ethylenedioxythiophene) (PEDOT) or poly(3-octylthiophene-2,5-diyl) (POT) as a conductive polymer transducing component. The solution-processable POT formulation simplifies the fabrication process, and sensor to sensor reproducibility has been improved via partial automation using an Opentron® automated pipetting robot. The resulting electrodes showed good sensitivity …

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Synthesis And 3d Printing Of Conducting Alginate–Polypyrrole Ionomers, Cassandra Wright, Binbin Zhang, Johnson Chung, Jonathan Pannell, Melissa Kuester, Paul J. Molino, Timothy Hanks Jan 2020

Synthesis And 3d Printing Of Conducting Alginate–Polypyrrole Ionomers, Cassandra Wright, Binbin Zhang, Johnson Chung, Jonathan Pannell, Melissa Kuester, Paul J. Molino, Timothy Hanks

Australian Institute for Innovative Materials - Papers

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. Hydrogels composed of calcium cross-linked alginate are under investigation as bioinks for tissue engineering scaffolds due to their variable viscoelasticity, biocompatibility, and erodibility. Here, pyrrole was oxidatively polymerized in the presence of sodium alginate solutions to form ionomeric composites of various compositions. The IR spectroscopy shows that mild base is required to prevent the oxidant from attacking the alginate during the polymerization reaction. The resulting composites were isolated as dried thin films or cross-linked hydrogels and aerogels. The products were characterized by elemental analysis to determine polypyrrole incorporation, electrical conductivity measurements, …

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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 Jan 2020

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 …

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Position Control Of A 3d Printed Soft Finger With Integrated Soft Pneumatic Sensing Chambers, Charbel Tawk, Emre Sariyildiz, Hao Zhou, Marc In Het Panhuis, Geoffrey M. Spinks, Gursel Alici Jan 2020

Position Control Of A 3d Printed Soft Finger With Integrated Soft Pneumatic Sensing Chambers, Charbel Tawk, Emre Sariyildiz, Hao Zhou, Marc In Het Panhuis, Geoffrey M. Spinks, Gursel Alici

Australian Institute for Innovative Materials - Papers

© 2020 IEEE. Soft robots require robust soft and flexible sensors that can undergo large deformations repeatedly. This work reports on soft robotic fingers with embedded soft pneumatic sensing chambers that are directly 3D printed without requiring postprocessing. A low-cost and open-source fused deposition modeling (FDM) 3D printer that employs an off-the-shelf soft thermoplastic poly(urethane) (TPU) was used to fabricate the monolithic fingers and sensing chambers. These pneumatic 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 …

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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 Jan 2020

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.

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Magnetic Modulation Of Terahertz Waves Via Spin-Polarized Electron Tunneling Based On Magnetic Tunnel Junctions, Zuanming Jin, Jugeng Li, Wenjie Zhang, Chenyang Guo, Caihua Wan, Xiufeng Han, Zhenxiang Cheng, C Zhang, Alexey Balakin, Alexander Shkurinov, Yan Peng, Guohong Ma, Yiming Zhu, Jianquan Yao, Songlin Zhuang Jan 2020

Magnetic Modulation Of Terahertz Waves Via Spin-Polarized Electron Tunneling Based On Magnetic Tunnel Junctions, Zuanming Jin, Jugeng Li, Wenjie Zhang, Chenyang Guo, Caihua Wan, Xiufeng Han, Zhenxiang Cheng, C Zhang, Alexey Balakin, Alexander Shkurinov, Yan Peng, Guohong Ma, Yiming Zhu, Jianquan Yao, Songlin Zhuang

Australian Institute for Innovative Materials - Papers

© 2020 American Physical Society. Magnetic tunnel junctions (MTJs) are a key technology in modern spintronics because they are the basis of read-heads of modern hard disk drives, nonvolatile magnetic random access memories, and sensor applications. In this paper, we demonstrate that tunneling magnetoresistance can influence terahertz (THz) wave propagation through a MTJ. In particular, various magnetic configurations between parallel state and antiparallel state of the magnetizations of the ferromagnetic layers in the MTJ have the effect of changing the conductivity, making a functional modulation of the propagating THz electromagnetic fields. Operating in the THz frequency range, a maximal modulation …

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Ac Loss And Contact Resistance Of Different Cicc Cable Patterns: Experiments And Numerical Modeling, Anvar Valiyaparambil Abdulsalam, J Qin, Y Wu, T Bagni, A Devred, T Haugan, Md. Shahriar Al Hossain, C Zhou, Arend Nijhuis Jan 2020

Ac Loss And Contact Resistance Of Different Cicc Cable Patterns: Experiments And Numerical Modeling, Anvar Valiyaparambil Abdulsalam, J Qin, Y Wu, T Bagni, A Devred, T Haugan, Md. Shahriar Al Hossain, C Zhou, Arend Nijhuis

Australian Institute for Innovative Materials - Papers

© 2020 The Author(s) For upcoming nuclear fusion energy reactors, like the China Fusion Engineering Test Reactor (CFETR) and EU-DEMO, the superconducting Cable-In-Conduit Conductors (CICC) are in the design phase, and the operating conditions like electromagnetic forces can be higher than in previous devices like ITER. The prototype conductors for the Central Solenoid (CS) coils in the CFETR, for example, are designed to produce a peak field of 19.9 T and are expected to be made of high current density Nb3Sn strands. Investigations are also ongoing on the application of bismuth strontium calcium copper oxide (BSCCO) and MgB2 strands for …

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Atomically Thin Superconductors, Zhi Li, Lina Sang, Peng Liu, Zengji Yue, Michael Fuhrer, Qikun Xue, Xiaolin Wang Jan 2020

Atomically Thin Superconductors, Zhi Li, Lina Sang, Peng Liu, Zengji Yue, Michael Fuhrer, Qikun Xue, Xiaolin Wang

Australian Institute for Innovative Materials - Papers

© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim In recent years, atomically thin superconductors, including atomically thin elemental superconductors, single layer FeSe films, and few-layer cuprate superconductors, have been studied extensively. This hot research field is mainly driven by the discovery of significant superconductivity enhancement and high-temperature interface superconductivity in single-layer FeSe films epitaxially grown on SrTiO3 substrates in 2012. This study has attracted tremendous research interest and generated more studies focusing on further enhancing superconductivity and finding the origin of the superconductivity. A few years later, research on atomically thin superconductors has extended to cuprate superconductors, unveiling many …

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Interplay Between Cold Densification And Malic Acid Addition (C4h6o5) For The Fabrication Of Near-Isotropic Mgb2 Conductors For Magnet Application, Md. Shahriar Al Hossain, Carmine Senatore, Yusuke Yamauchi, Mislav Mustapic, Daniel Gajda, Dipak Patel, Aslam Khan, Jung Ho Kim, Andrzej Morawski, Rene Flukiger Jan 2020

Interplay Between Cold Densification And Malic Acid Addition (C4h6o5) For The Fabrication Of Near-Isotropic Mgb2 Conductors For Magnet Application, Md. Shahriar Al Hossain, Carmine Senatore, Yusuke Yamauchi, Mislav Mustapic, Daniel Gajda, Dipak Patel, Aslam Khan, Jung Ho Kim, Andrzej Morawski, Rene Flukiger

Australian Institute for Innovative Materials - Papers

© 2020 The effect of cold high pressure densification (CHPD) on anisotropy of the critical current density (Jc) in « in situ » single core binary and alloyed MgB2 tapes has been determined as a function of temperatures at 4.2 K, 20 K and 25 K as well as at applied magnetic fields up to 19 T. The study includes binary and C4H6O5 (malic acid) doped MgB2 tapes before and after CHPD. It is remarkable that the CHPD process not only improved the Jc values, in particular at the higher magnetic fields, but also decreased the anisotropy ratio, Γ = …

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Development Of Ceo2 Nanodot Encrusted Tio2 Nanoparticles With Reduced Photocatalytic Activity And Increased Biocompatibility Towards A Human Keratinocyte Cell Line, Alexander Morlando, Marcela Chaki Borras, Yaser Rehman, Shahnaz Bakand, Philip J. Barker, Ronald Sluyter, Konstantin K. Konstantinov Jan 2020

Development Of Ceo2 Nanodot Encrusted Tio2 Nanoparticles With Reduced Photocatalytic Activity And Increased Biocompatibility Towards A Human Keratinocyte Cell Line, Alexander Morlando, Marcela Chaki Borras, Yaser Rehman, Shahnaz Bakand, Philip J. Barker, Ronald Sluyter, Konstantin K. Konstantinov

Australian Institute for Innovative Materials - Papers

The cytotoxic and genotoxic effects of titanium dioxide (TiO2) nanoparticles when exposed to ultraviolet (UV) radiation, particularly wavelengths between 320-400 nm, has raised concern over their safe use in health and cosmetic related products such as sunscreens. Cerium dioxide (CeO2) nanoparticles have been demonstrated to display biocompatible properties and antioxidant activity due to redox cycling of the Ce3+/Ce4+ oxidation states. In this work, CeO2/TiO2 nanocomposites were prepared through a standard precipitation method at atomic concentrations (at%) of Ce relative to Ti of 2.5, 5 and 10 at%, with the aim of reducing the photocatalytic activity of the core TiO2 nanoparticles …

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Strategies Of Engineering 2d Nanomaterial-Based Electrocatalysts Toward Hydrogen Evolution Reaction, Yaping Chen, Guoqiang Zhao, Wenping Sun Jan 2020

Strategies Of Engineering 2d Nanomaterial-Based Electrocatalysts Toward Hydrogen Evolution Reaction, Yaping Chen, Guoqiang Zhao, Wenping Sun

Australian Institute for Innovative Materials - Papers

© 2020, The Author(s). Electrochemical water splitting driven by renewable energy-derived electricity is considered as the most promising pathway for delivering clean and sustainable hydrogen production. The key to achieving an efficient water splitting process is developing highly active electrocatalysts. Two-dimensional (2D) nanomaterials hold great promise in the electrocatalysis field due to their unique physicochemical properties. Some of them are not active enough because of the poor intrinsic activity, low density of active sites or low electrical conductivity. Some are inert for electrocatalytic reactions, but are able to work as the functional substrates for hybrid electrocatalysts. Thus, tremendous strategies have …

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Atomic-Scale Origin Of Ultrahigh Piezoelectricity In Samarium-Doped Pmn-Pt Ceramics, Chunchun Li, Bin Xu, Dabin Lin, Shujun Zhang, Laurent Bellaiche, Thomas R. Shrout, Fei Li Jan 2020

Atomic-Scale Origin Of Ultrahigh Piezoelectricity In Samarium-Doped Pmn-Pt Ceramics, Chunchun Li, Bin Xu, Dabin Lin, Shujun Zhang, Laurent Bellaiche, Thomas R. Shrout, Fei Li

Australian Institute for Innovative Materials - Papers

Designing high-performance piezoelectric materials based on atomic-scale calculations is highly desired in recent years, following the understanding of the structure-property relationship of state-of-the-art piezoelectric materials. Previous mesoscale simulations showed that local structural heterogeneity plays an important role in the piezoelectric property of ferroelectrics; that is, larger structural heterogeneity leads to higher piezoelectricity. In this Rapid Communication, by combining first-principles calculations and experimental characterizations, we explored the atomic-scale origin of the high piezoelectricity for samarium-doped Pb(Mg1/3Nb2/3)O3-PbTiO3 (PMN-PT) ceramics, which possesses the highest piezoelectric d33 of ∼1500pCN-1 among all known piezoelectric ceramics. The impacts of various dopants on local structure and piezoelectric …

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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 Jan 2020

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 …

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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 Jan 2020

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 …

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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 Jan 2020

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.

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Thermally Actuated Hydrogel Bead Based Braided Artificial Muscle, Bidita Binte Salahuddin, Holly Warren, Geoffrey M. Spinks Jan 2020

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 …

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