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Enhanced Magnetism In Field-Cooled [Ni80fe20/Mn]3 Multilayers Studied Using Polarized Neutron Reflectometry, W Uilhoorn, S J. Callori, David L. Cortie, Hui-Chia Su, Y Khaydukov, Ko-Wei Lin, Frank Klose
Enhanced Magnetism In Field-Cooled [Ni80fe20/Mn]3 Multilayers Studied Using Polarized Neutron Reflectometry, W Uilhoorn, S J. Callori, David L. Cortie, Hui-Chia Su, Y Khaydukov, Ko-Wei Lin, Frank Klose
Australian Institute for Innovative Materials - Papers
Here, the interfacial magnetic coupling in an exchange biased [Ni80Fe20/Mn]3 multilayer system has been studied using polarized neutron re ectometry. Previous results on this system indicate the importance of the coupling between the Fe-Mn and Ni-Mn orbitals at the layer interfaces. Magnetic depth profiles of the multilayer were measured at low temperatures under field-cooled and zero-field-cooled conditions. While no definitive interfacial state was found, a magnetic moment enhancement of roughly 20-30% in the applied field direction was observed throughout the bulk of the NiFe layers in the field-cooled state as compared to the zero-field-cooled measurements. The origin of this enhancement …
Ferroelectric And Magnetic Properties Of Aurivillius Bim+1ti3fem−3o3m+3 Thin Films, Tingting Jia, Hideo Kimura, Zhenxiang Cheng, Hongyang Zhao
Ferroelectric And Magnetic Properties Of Aurivillius Bim+1ti3fem−3o3m+3 Thin Films, Tingting Jia, Hideo Kimura, Zhenxiang Cheng, Hongyang Zhao
Australian Institute for Innovative Materials - Papers
Aurivillius Bim+1Ti3Fem−3O3m+3 (m = 4, 5, 6) thin films have been deposited by a pulsed laser deposition system. The x-ray diffraction patterns indicate the formation of orthorhombic phase. The remanent polarization (2Pr) of Bim+1Ti3Fem−3O3m+3 thin films is decreased with the m-number. Positive-up-negative-down measurements indicate the presence of ferroelectric (FE) polarization in as-obtained thin films. Piezoresponse force microscopy investigations confirm the existence of FE domains and the switchable polarization. Weak magnetic moment is detected in the Aurivillius films at room temperature. The present work …
3d Fe2(Moo4)3 Microspheres With Nanosheet Constituents As High-Capacity Anode Materials For Lithium-Ion Batteries, Hao Zheng, Shiqiang Wang, Jiazhao Wang, Jun Wang, Lin Li, Yun Yang, Chuanqi Feng, Ziqi Sun
3d Fe2(Moo4)3 Microspheres With Nanosheet Constituents As High-Capacity Anode Materials For Lithium-Ion Batteries, Hao Zheng, Shiqiang Wang, Jiazhao Wang, Jun Wang, Lin Li, Yun Yang, Chuanqi Feng, Ziqi Sun
Australian Institute for Innovative Materials - Papers
Three-dimensional (3D) Fe2(MoO4)3 microspheres with ultrathin nanosheet constituents are first synthesized as anode materials for the lithium-ion battery. It is interesting that the single-crystalline nanosheets allow rapid electron/ion transport on the inside, and the high porosity ensures fast diffusion of liquid electrolyte in energy storage applications. The electrochemical properties of Fe2(MoO4)3 as anode demonstrates that 3D Fe2(MoO4)3 microspheres deliver an initial capacity of 1855 mAh/g at a current density of 100 mA/g. Particularly, when the current density is increased to 800 mA/g, the reversible capacity of Fe2(MoO4)3 anode still arrived at 456 mAh/g over 50 cycles. The large and reversible …
In-Arrears Interest Rate Derivatives Under The 3/2 Model, Joanna M. Goard
In-Arrears Interest Rate Derivatives Under The 3/2 Model, Joanna M. Goard
Faculty of Engineering and Information Sciences - Papers: Part A
Lie symmetry methods are used to find a closed form solution for in-arrears swaps under the 3/2 model ( ( ) ) ˆ 3 dr = r A t −α r dt + cr 2dZ . As well, approximate solutions are found for short-tenor inarrears caplets and floorlets under the same interest rate model. Comparisons are made of the approximate option values with those obtained with a computationally-intensive numerical scheme. The approximate pricing is found to be substantially fast easy to implement, while the relative errors with respect to the “true” prices are very small.
On The Uniqueness Of Lp-Minkowski Problems: The Constant P-Curvature Case In R^3, Yong Huang, Jiakun Liu, Lu Xu
On The Uniqueness Of Lp-Minkowski Problems: The Constant P-Curvature Case In R^3, Yong Huang, Jiakun Liu, Lu Xu
Faculty of Engineering and Information Sciences - Papers: Part A
We study the C4 smooth convex bodies K ⊂Rn+1 satisfying K(x) =u(x)1−p, where x ∈Sn, K is the Gauss curvature of ∂K, u is the support function of K, and p is a constant. In the case of n =2, either when p ∈[−1, 0] or when p ∈(0, 1) in addition to a pinching condition, we show that K must be the unit ball. This partially answers a conjecture of Lutwak, Yang, and Zhang about the uniqueness of the Lp-Minkowski problem in R3. Moreover, we give an explicit pinching constant depending only on p when p ∈(0, 1).
An Investigation Of The Nanomechanical Properties Of 0.5ba(Ti0.8zr0.2)O3-0.5(Ba0.7ca0.3)Tio3 Thin Films, Zhong-Lan Cai, Zeng-Mei Wang, Huan-Huan Wang, Zhenxiang Cheng, Baowen Li, Xin-Li Guo, Hideo Kimura, Akira Kasahara
An Investigation Of The Nanomechanical Properties Of 0.5ba(Ti0.8zr0.2)O3-0.5(Ba0.7ca0.3)Tio3 Thin Films, Zhong-Lan Cai, Zeng-Mei Wang, Huan-Huan Wang, Zhenxiang Cheng, Baowen Li, Xin-Li Guo, Hideo Kimura, Akira Kasahara
Australian Institute for Innovative Materials - Papers
For practical application, the functional piezoelectric film in microelectromechanical systems should meet the requirement of physical properties, as well as the mechanical properties. In this article, 0.5Ba(Ti0.8Zr0.2)O3-0.5(Ba0.7Ca0.3)TiO3 (0.5BZT-0.5BCT) thin films with varied properties were prepared on (100) Si substrates via a sol-gel technique at different annealing temperatures. The effects of the annealing temperature on the morphology, piezoelectricity, hardness, and elastic modulus were studied. Particular attention was paid to the surface frictional behavior of films, and the changes in the friction force can be radically explained in terms of differences in the hardness/elastic modulus ratio and the residual stress of films. …
Structural Evolution Of Electrodes In The Ncr And Cgr Cathode-Containing Commercial Lithium-Ion Batteries Cycled Between 3.0 And 4.5 V: An Operando Neutron Powder-Diffraction Study, Wei Kong Pang, Moshiul Alam, Vanessa K. Peterson, Neeraj Sharma
Structural Evolution Of Electrodes In The Ncr And Cgr Cathode-Containing Commercial Lithium-Ion Batteries Cycled Between 3.0 And 4.5 V: An Operando Neutron Powder-Diffraction Study, Wei Kong Pang, Moshiul Alam, Vanessa K. Peterson, Neeraj Sharma
Faculty of Engineering and Information Sciences - Papers: Part A
The dissimilar lattice-evolution of the isostructural layered Li(Ni,Co,Al)O2 (NCR) and Li(Ni,Co,Mn)O2 (CGR) cathodes in commercial lithium-ion batteries during overcharging/discharging was examined using operando neutron powder-diffraction. The stacking axis (c parameter) of both cathodes expands on initial lithiation and contracts on further lithiation. Although both the initial increase and later decrease are smaller for the CGR cathode, the overall change between battery charged and discharged states of the c parameter is larger for the CGR (1.29%) than for the NCR cathode (0.33%). We find these differences are correlated to the transition metal to oxygen bond (as measured through …
Terahertz Probes Of Magnetic Field Induced Spin Reorientation In Yfeo 3 Single Crystal, Xian Lin, Junjie Jiang, Zuanming Jin, Dongyang Wang, Zhen Tian, Jiaguang Han, Zhenxiang Cheng, Guohong Ma
Terahertz Probes Of Magnetic Field Induced Spin Reorientation In Yfeo 3 Single Crystal, Xian Lin, Junjie Jiang, Zuanming Jin, Dongyang Wang, Zhen Tian, Jiaguang Han, Zhenxiang Cheng, Guohong Ma
Australian Institute for Innovative Materials - Papers
Using the terahertz time-domain spectroscopy, we demonstrate the spin reorientation of a canted antiferromagnetic YFeO3 single crystal, by evaluating the temperature and magnetic field dependence of resonant frequency and amplitude for the quasi-ferromagnetic (FM) and quasi-antiferromagnetic modes (AFM), a deeper insight into the dynamics of spin reorientation in rare-earth orthoferrites is established. Due to the absence of 4f-electrons in Y ion, the spin reorientation of Fe sublattices can only be induced by the applied magnetic field, rather than temperature. In agreement with the theoretical predication, the frequency of FM mode decreases with magnetic field. In addition, an …
Delocalized Surface State In Epitaxial Si(111) Film With Spontaneous √3 X √3 Superstructure, Jian Chen, Yi Du, Zhi Li, Wenbin Li, Baojie Feng, Jinlan Qiu, Peng Cheng, S X. Dou, Lan Chen, Ke-Hui Wu
Delocalized Surface State In Epitaxial Si(111) Film With Spontaneous √3 X √3 Superstructure, Jian Chen, Yi Du, Zhi Li, Wenbin Li, Baojie Feng, Jinlan Qiu, Peng Cheng, S X. Dou, Lan Chen, Ke-Hui Wu
Australian Institute for Innovative Materials - Papers
The " multilayer silicene" films were grown on Ag(111), with increasing thickness above 30 monolayers (ML). Scanning tunneling microscopy (STM) observations suggest that the " multilayer silicene" is indeed a bulk-like Si(111) film with a (√ 3 x √ 3)R30° honeycomb superstructure on surface. The possibility for formation of Si(111)(√ 3 x √ 3)R30°-Ag reconstruction on the surface can be distinctively ruled out by peeling off the surface layer with the STM tip. On this surface, delocalized surface state as well as linear energy-momentum dispersion was observed from quasiparticle interference patterns. Our results indicate that a bulklike silicon film with …
Poly(3,4-Ethylenedioxythiophene): Dextran Sulfate (Pedot: Ds) - A Highly Processable Conductive Organic Biopolymer, David Harman, Robert Gorkin Iii, Leo Stevens, Brianna Thompson, Klaudia Wagner, Bo Weng, Johnson Chung, Marc In Het Panhuis, Gordon G. Wallace
Poly(3,4-Ethylenedioxythiophene): Dextran Sulfate (Pedot: Ds) - A Highly Processable Conductive Organic Biopolymer, David Harman, Robert Gorkin Iii, Leo Stevens, Brianna Thompson, Klaudia Wagner, Bo Weng, Johnson Chung, Marc In Het Panhuis, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
A novel water-dispersible conducting polymer analogous to poly(3,4-dioxythiophene):polystyrene sulfonate (PEDOT:PSS) has been chemically synthesized in a single reaction in high yield. PEDOT:DS, a new member of the polythiophene family, is composed of a complex between PEDOT and the sulfonated polysaccharide polyanion dextran sulfate. Drop-cast films of aqueous suspensions of the material display a native conductivity of up to 7 ± 1 S cm-1, increasing to 20 ± 2 S cm-1 after treatment with ethylene glycol and thermal annealing. Mass ratios of the precursors NaDS and EDOT were varied from 5:1 to 2:1 and a decrease in the …
A Class Of Rare Antiferromagnetic Metallic Oxides: Double Perovskite Amn(3)V(4)O(12) (A = Na+, Ca2+, And La3+) And The Site-Selective Doping Effect, Guangbiao Zhang, Yuan Xu Wang, Zhenxiang Cheng, Yuli Yan, Chengxiao Peng, Chao Wang, Shuai Dong
A Class Of Rare Antiferromagnetic Metallic Oxides: Double Perovskite Amn(3)V(4)O(12) (A = Na+, Ca2+, And La3+) And The Site-Selective Doping Effect, Guangbiao Zhang, Yuan Xu Wang, Zhenxiang Cheng, Yuli Yan, Chengxiao Peng, Chao Wang, Shuai Dong
Australian Institute for Innovative Materials - Papers
We have investigated the structural, electronic, and magnetic properties of A-site-ordered double-perovskitestructured oxides, AA'3B4O12 (A = Na, Ca, and La) with Mn and V at A' and B sites, respectively, using firstprinciple calculations based on the density functional theory. Our calculation results show that the antiferromagnetic phase is the ground state for all the compounds. By changing the A-site ions from Na+ to Ca2+ and then to La3+, the transfer of charge between Mn and O ions was changed from 1.56 to 1.55 and then to 1.50, and that between the …
Large Scale Production Of Novel G-C3n4 Micro Strings With High Surface Area And Versatile Photodegradation Ability, Muhammad Nawaz Tahir, Chuanbao Cao, Faheem K. Butt, Sajid Butt, Faryal Idrees, Zulfiqar Ali, Imran Aslam, M Tanveer, Asif Mahmood, Nasir Mahmood
Large Scale Production Of Novel G-C3n4 Micro Strings With High Surface Area And Versatile Photodegradation Ability, Muhammad Nawaz Tahir, Chuanbao Cao, Faheem K. Butt, Sajid Butt, Faryal Idrees, Zulfiqar Ali, Imran Aslam, M Tanveer, Asif Mahmood, Nasir Mahmood
Australian Institute for Innovative Materials - Papers
An easy, scalable and environmentally benign chemical method has been developed to synthesize micro strings of graphitic-C3N4 (msg-C3N4) through pre-treatment of melamine with HNO 3 in alkaline solvent at low temperature. This methodology results in a unique string type morphology of msg-C3N4 with higher surface area. These msg-C3N4 micro strings were used as a photocatalyst under visible light for photodegradation of rhodamine B, methyl blue and methyl orange. The msg-C3N4 shows enhanced photodegradation efficiency due to its high surface area and favourable bandgap. The first order rate constant for msg-C3N4 was measured which confirms the higher performance of msg-C3N4 in …
Hydrostatic Piezoelectric Properties Of [011] Poled Pb(Mg 1/3nb2/3)O3-Pbtio3 Single Crystals And 2-2 Lamellar Composites, Lili Li, Shujun Zhang, Zhuo Xu, Xuecang Geng, Fei Wen, Jun Luo, Thomas R. Shrout
Hydrostatic Piezoelectric Properties Of [011] Poled Pb(Mg 1/3nb2/3)O3-Pbtio3 Single Crystals And 2-2 Lamellar Composites, Lili Li, Shujun Zhang, Zhuo Xu, Xuecang Geng, Fei Wen, Jun Luo, Thomas R. Shrout
Australian Institute for Innovative Materials - Papers
The hydrostatic piezoelectric properties of [011] poled Pb(Mg 1/3Nb2/3)O3-PbTiO3 (PMN-PT) crystals and corresponding 2-2 crystal/epoxy composites were investigated. The crystal volume ratio and compositional dependencies of the hydrostatic charge and voltage coefficients (dh and gh) and hydrostatic figure of merit (FOM) dh x gh were determined, where large FOM value of 3.2 pm2/N with high stability as a function of hydrostatic pressure was achieved for rhombohedral crystal composites. In addition, the stress amplification effects of the face-plate and different epoxy matrixes were investigated, with maximum FOM value being on the order of 92 pm2/N, indicating that 2-2 crystal/epoxy composites are …
Three-Dimensional-Network Li3v2(Po4) 3/C Composite As High Rate Lithium Ion Battery Cathode Material And Its Compatibility With Ionic Liquid Electrolytes, Jiantie Xu, Shulei Chou, Cuifeng Zhou, Qinfen Gu, Hua-Kun Liu, S X. Dou
Three-Dimensional-Network Li3v2(Po4) 3/C Composite As High Rate Lithium Ion Battery Cathode Material And Its Compatibility With Ionic Liquid Electrolytes, Jiantie Xu, Shulei Chou, Cuifeng Zhou, Qinfen Gu, Hua-Kun Liu, S X. Dou
Australian Institute for Innovative Materials - Papers
A high performance Li3V2(PO4)3 cathode material for lithium ion batteries was synthesized by the microwave-assisted hydrothermal method followed by a post annealing process. The synchrotron X-ray diffraction analysis results confirmed that single-phase Li3V2(PO4)3 with monoclinic structure was obtained. Scanning electron microscope and transmission electron microscope images revealed that the as-prepared Li3V 2(PO4)3 was composed of nanowires and microsized particles. Electrochemical results demonstrated that the Li 3V2(PO4)3 electrode measured at 10 C after 500 cycles can deliver discharge capacities of 85.4 mAh g-1 and 103.4 mAh g-1, with a capacity retention of 99.3% and 95.9%, in the voltage ranges of 3.0-4.3 …
Low-Energy Positron And Electron Scattering From Tetrahydrofuran And 3-Hydroxy-Tetrahydrofuran, James P. Sullivan, Luca Chiari, Emma Anderson, Wade Tattersall, Prasanga Palihawadana, J R. Machacek, Casten Makochekanwa, R P. Mceachran, Stephen J. Buckman, M J. Brunger, Gustavo Garcia, Francisco Blanco
Low-Energy Positron And Electron Scattering From Tetrahydrofuran And 3-Hydroxy-Tetrahydrofuran, James P. Sullivan, Luca Chiari, Emma Anderson, Wade Tattersall, Prasanga Palihawadana, J R. Machacek, Casten Makochekanwa, R P. Mceachran, Stephen J. Buckman, M J. Brunger, Gustavo Garcia, Francisco Blanco
Faculty of Engineering and Information Sciences - Papers: Part A
We present new cross section results from a joint experimental and theoretical investigation into low-energy positron and electron scattering from two targets of biological interest, namely tetrahydrofuran and 3-hydroxy-tetrahydrofuran. We compare and discuss the total, elastic and inelastic cross sections for these species in the light of potential positron and electron-induced damage in biomolecular systems.
A Review Of Recent Investigations On Voltage Unbalance Management: Further Contributions To Improvement Of Iec/Tr 61000-3-13:2008, Jayatunga Vitharanage Upuli Priyadarshani Jayatunga, Sarath Perera, Philip Ciufo, Ashish Agalgaonkar
A Review Of Recent Investigations On Voltage Unbalance Management: Further Contributions To Improvement Of Iec/Tr 61000-3-13:2008, Jayatunga Vitharanage Upuli Priyadarshani Jayatunga, Sarath Perera, Philip Ciufo, Ashish Agalgaonkar
Faculty of Engineering and Information Sciences - Papers: Part A
Voltage unbalance (VU) management in power systems essentially involves two major aspects: VU emission allocation at the pre-connection stage and compliance assessment at the post-connection stage of installations. This is a summary and a review paper on the recent investigations completed in relation to VU emission assessment techniques which provide further contributions to the improvement of IEC Technical Report IEC/TR61000-3-13:2008. Generalised approaches developed for the classification of different sources of unbalance at the point of evaluation (covering both radial and interconnected networks) and the evaluation of their individual contributions giving emphasis to the discrimination between customer and network responsibility on …
Electrospun P2-Type Na 2/3 (Fe 1/2 Mn 1/2 )O 2 Hierarchical Nano Fibers As Cathode Material For Sodium-Ion Batteries, Sujith Kalluri, Kuok Hau Seng, Wei Kong Pang, Zaiping Guo, Zhixin Chen, Hua-Kun Liu, S X. Dou
Electrospun P2-Type Na 2/3 (Fe 1/2 Mn 1/2 )O 2 Hierarchical Nano Fibers As Cathode Material For Sodium-Ion Batteries, Sujith Kalluri, Kuok Hau Seng, Wei Kong Pang, Zaiping Guo, Zhixin Chen, Hua-Kun Liu, S X. Dou
Faculty of Engineering and Information Sciences - Papers: Part A
Sodium-ion batteries can be the best alternative to lithium-ion batteries, because of their similar electrochemistry, nontoxicity, and elemental abundance and the low cost of sodium. They still stand in need of better cathodes in terms of their structural and electrochemical aspects.
Polarization Alignment, Phase Transition, And Piezoelectricity Development In Polycrystalline 0.5ba(Zr0.2 Ti0.8)O3-0.5(Ba0.7 Ca0.3)Tio3, Hanzheng Guo, Brian K. Voas, Shujun Zhang, Chao Zhou, Xiaobing Ren, Scott P. Beckman, Xiaoli Tan
Polarization Alignment, Phase Transition, And Piezoelectricity Development In Polycrystalline 0.5ba(Zr0.2 Ti0.8)O3-0.5(Ba0.7 Ca0.3)Tio3, Hanzheng Guo, Brian K. Voas, Shujun Zhang, Chao Zhou, Xiaobing Ren, Scott P. Beckman, Xiaoli Tan
Australian Institute for Innovative Materials - Papers
The microstructural origin of the exceptionally high piezoelectric response of polycrystalline 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 is investigated using in situ transmission electron microscopy, in addition to a wide variety of bulk measurements and first-principles calculations. A direct correlation is established relating a domain wall-free state to the ultrahigh piezoelectric d33 coefficient in this BaTiO3-based composition. The results suggest that the unique single-domain state formed during electrical poling is a result of a structural transition from coexistent rhombohedral and tetragonal phases to an orthorhombic phase that has an anomalously low elastic modulus. First-principles calculations indicate that incorporating Ca2+ and Zr4+ into BaTiO3 reduces the …
Synthesis Of Potential Theranostic System Consisting Of Methotrexate-Immobilized (3-Aminopropyl)Trimethoxysilane Coated Α-Bi2o3 Nanoparticles For Cancer Treatment, Kathrin Bogusz, Moeava Tehei, Callum Stewart, Marjorie Mcdonald, Dean Cardillo, Michael Lerch, Stephanie Corde, Anatoly Rosenfeld, Hua-Kun Liu, Konstantin Konstantinov
Synthesis Of Potential Theranostic System Consisting Of Methotrexate-Immobilized (3-Aminopropyl)Trimethoxysilane Coated Α-Bi2o3 Nanoparticles For Cancer Treatment, Kathrin Bogusz, Moeava Tehei, Callum Stewart, Marjorie Mcdonald, Dean Cardillo, Michael Lerch, Stephanie Corde, Anatoly Rosenfeld, Hua-Kun Liu, Konstantin Konstantinov
Australian Institute for Innovative Materials - Papers
In this study we present the synthesis of a new theranostic system consisting of a core-shell structured nanoceramic-drug conjugate that can potentially combine chemotherapeutic, targeting, diagnostic and radio dose enhancing features in cancer treatment. The conjugate is made of α-Bi2O3 nanoparticles (NPs) which were first coated with (3-aminopropyl)trimethoxysilane (APTMS) to form a core-shell structure and then attached with methotrexate (MTX) through amidation between the amine moieties on the shell and the carboxylic acid groups on MTX. While α-Bi2O3 NPs with high effective atomic number can serve as both contrast agent and radiosensitiser in dose enhancement radiation therapy, MTX as an …
3-Dimensional (3d) Fabricated Polymer Based Drug Delivery Systems, Simon Moulton, Gordon G. Wallace
3-Dimensional (3d) Fabricated Polymer Based Drug Delivery Systems, Simon Moulton, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Drug delivery from 3-dimensional (3D) structures is a rapidly growing area of research. It is essential to achieve structures wherein drug stability is ensured, the drug loading capacity is appropriate and the desired controlled release profile can be attained. Attention must also be paid to the development of appropriate fabrication machinery that allows 3D drug delivery systems (DDS) to be produced in a simple, reliable and reproducible manner. The range of fabrication methods currently being used to form 3D DDSs include electrospinning (solution and melt), wet-spinning and printing (3-dimensional). The use of these techniques enables production of DDSs from the …
Na3v2(Po4)3 Particles Partly Embedded In Carbon Nanofibers With Superb Kinetics For Ultra-High Power Sodium Ion Batteries, Junghoon Yang, Dongwook Han, Mi Ru Jo, Kyeongse Song, Yongil Kim, Shulei Chou, Hua-Kun Liu, Yong-Mook Kang
Na3v2(Po4)3 Particles Partly Embedded In Carbon Nanofibers With Superb Kinetics For Ultra-High Power Sodium Ion Batteries, Junghoon Yang, Dongwook Han, Mi Ru Jo, Kyeongse Song, Yongil Kim, Shulei Chou, Hua-Kun Liu, Yong-Mook Kang
Australian Institute for Innovative Materials - Papers
We here describe the extraordinary performance of NASICON Na3V2(PO4)3-carbon nanofiber (NVP-CNF) composites with ultra-high power and excellent cycling performance. NVP-CNFs are composed of CNFs at the center part and partly embedded NVP nanoparticles in the shell. We first report this unique morphology of NVP-CNFs for the electrode material of secondary batteries as well as for general energy conversion materials. Our NVP-CNFs show not only a high discharge capacity of approx. 88.9 mA h g-1 even at a high current density of 50 C but also approx. 93% cyclic retention property after …
Direct Observation Of Domain Wall Motion And Novel Dielectric Loss In 0.23pb(In1/2nb1/2)O3-0.42pb(Mg1/3 Nb2/3)O3-0.35pbtio3 Crystals, Dabin Lin, Zhenrong Li, Fei Li, Shujun Zhang
Direct Observation Of Domain Wall Motion And Novel Dielectric Loss In 0.23pb(In1/2nb1/2)O3-0.42pb(Mg1/3 Nb2/3)O3-0.35pbtio3 Crystals, Dabin Lin, Zhenrong Li, Fei Li, Shujun Zhang
Australian Institute for Innovative Materials - Papers
Domain wall motion was directly observed at temperatures near to the monoclinic-to-tetragonal phase transition temperature (TM-T) in [001]-oriented 0.23Pb(In1/2Nb1/2)O3-0. 42Pb(Mg1/3Nb2/3)O3-0.35PbTiO3 (0.23PIN-0.42PMN-0.35PT) single crystals using a polarizing light microscope, and evident 90°and 180°domain switches were observed near the Curie temperature (TC). Two dielectric loss anomalies were observed at temperatures near TM-T in the [001]-oriented PIN-PMN-PT single crystals, while an additional dielectric loss peak was found at temperatures a few degrees below TC, which was associated with domain wall motion. Based on the domain structure observations, a domain switching mechanism was proposed to explain the novel dielectric loss peak at several degrees …
1-3 Piezoelectric Composites For High-Temperature Transducer Applications, Lili Li, Shujun Zhang, Zhuo Xu, Fei Wen, Xuecang Geng, Hyeong Jae Lee, Thomas R. Shrout
1-3 Piezoelectric Composites For High-Temperature Transducer Applications, Lili Li, Shujun Zhang, Zhuo Xu, Fei Wen, Xuecang Geng, Hyeong Jae Lee, Thomas R. Shrout
Australian Institute for Innovative Materials - Papers
High-temperature Pb(Zr,Ti)O3/epoxy 1-3 composites were fabricated using the dice and fill method. The epoxy filler was modified with glass spheres in order to improve the thermal reliability of the composites at elevated temperatures. Temperature-dependent dielectric and electromechanical properties of the composites were measured after ageing at 250 °C with different dwelling times. Obvious cracks were observed and the electrodes were damaged in the composite with unmodified epoxy after 200 h, leading to the failure of the composite. In contrast, composites with >12 vol% glass sphere loaded epoxies were found to exhibit minimal electrical property variation after ageing for 500 h, …
Experimental And Theoretical Cross Sections For Positron Collisions With 3-Hydroxy-Tetrahydrofuran, Luca Chiari, Prasanga Palihawadana, J R. Machacek, Casten Makochekanwa, Gustavo Garcia, Francisco Blanco, R P. Mceachran, M J. Brunger, Stephen J. Buckman, James P. Sullivan
Experimental And Theoretical Cross Sections For Positron Collisions With 3-Hydroxy-Tetrahydrofuran, Luca Chiari, Prasanga Palihawadana, J R. Machacek, Casten Makochekanwa, Gustavo Garcia, Francisco Blanco, R P. Mceachran, M J. Brunger, Stephen J. Buckman, James P. Sullivan
Faculty of Engineering and Information Sciences - Papers: Part A
Cross section results from a joint experimental and theoretical investigation into positron scattering from 3-hydroxy-tetrahydrofuran (3H-THF) are presented. Total and positronium (Ps) formation cross sections have been measured from 1 to 190 eV using the positron beamline at the Australian National University, which has an energy resolution between 60 and 100 meV. The total cross section (TCS) and the elastic and total inelastic integral cross sections in the energy range between 1 and 1000 eV have been computed within the Independent Atom Model using the Screening Corrected Additivity Rule approach. In addition, we have calculated elastic differential cross sections at …
A Three-Phase Power Flow Approach For Integrated 3-Wire Mv And 4-Wire Multigrounded Lv Networks With Rooftop Solar Pv, Md J E Alam, K M. Muttaqi, Darmawan Sutanto
A Three-Phase Power Flow Approach For Integrated 3-Wire Mv And 4-Wire Multigrounded Lv Networks With Rooftop Solar Pv, Md J E Alam, K M. Muttaqi, Darmawan Sutanto
Faculty of Engineering and Information Sciences - Papers: Part A
With increasing level of rooftop solar photovoltaic (PV) penetration into low voltage (LV) distribution networks, analysis with realistic network models is necessary for adequate capturing of network behavior. Traditional three-phase 3-wire power flow approach lacks the capability of exact analysis of 4-wire multigrounded LV networks due to the approximation of merging the neutral wire admittance into the phase wire admittances. Such an approximation may not be desirable when neutral wire and grounding effects need to be assessed, especially in the presence of single-phase solar power injection that may cause a significant level of network unbalance. This paper proposes a three-phase …
A Simple Model To Extend 1-D Hydraulics To 3-D Hydraulics, Shu-Qing Yang
A Simple Model To Extend 1-D Hydraulics To 3-D Hydraulics, Shu-Qing Yang
Faculty of Engineering and Information Sciences - Papers: Part A
the core of fluid mechanics is the study of friction on a solid/liquid interface, the friction force can be divided into skin friction and form drag. Nikuradse's experiments reveal that the friction factor depends on the Reynolds number (Re) and relative roughness (r), this observation implies the co-existence of skin friction and form drag, but the definitions of Re and r given by Nikuradse cannot be linked with the skin friction and form drag, this leads to the invalidity of existing theory to predict the friction factor in a complex flow, like a channel flow with vegetation. To establish a …
Studies Of The Surface Reaction Mechanisms Of Pb-3 Wt%Sn-0.5 Wt%Ag Anode In Cro3 Solutions, Jianzhong Li, Xiuli Sun, Yanwen Tian, Yue Zhao
Studies Of The Surface Reaction Mechanisms Of Pb-3 Wt%Sn-0.5 Wt%Ag Anode In Cro3 Solutions, Jianzhong Li, Xiuli Sun, Yanwen Tian, Yue Zhao
Faculty of Engineering and Information Sciences - Papers: Part A
This work examines the change of surface properties and the reaction process of lead alloy anode in CrO3 solution under conditions of high current density, by means of SEM, EDX, XRD, electrochemical test and Raman spectroscopy, for understanding the corrosion mechanism of lead alloy anode. In the initial oxidation stage of lead alloy anode, the diffraction peaks of monoclinic PbCrO4 and PbO are clearly shown in the XRD spectrum of the lead alloy surface. With increasing reaction time, PbCrO4 and PbO diffraction peaks are weakened and those of lead dioxide strengthened. Cyclic voltammetry reveals that the electrode potential change is …
Stabilization Of Nazn(Bh4)3 Via Nanoconfinement In Sba-15 Towards Enhanced Hydrogen Release, Guanglin Xia, Li Li, Zaiping Guo, Qinfen Gu, Yanhui Guo, Xuebin Yu, Hua-Kun Liu, Zongwen Liu
Stabilization Of Nazn(Bh4)3 Via Nanoconfinement In Sba-15 Towards Enhanced Hydrogen Release, Guanglin Xia, Li Li, Zaiping Guo, Qinfen Gu, Yanhui Guo, Xuebin Yu, Hua-Kun Liu, Zongwen Liu
Faculty of Engineering - Papers (Archive)
In the present work, the decomposition behaviour of NaZn(BH4)3 nanoconfined in mesoporous SBA-15 has been investigated in detail and compared to bulk NaZn(BH4)3 that was ball milled with SBA-15, but not nanoconfined. The successful incorporation of nanoconfined NaZn(BH4)3 into mesopores of SBA-15 was confirmed by scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray spectroscopy, 11B nuclear magnetic resonance, nitrogen absorption/desorption isotherms, and Fourier transform infrared spectroscopy measurements. It is demonstrated that the dehydrogenation of the space-confined NaZn(BH4)3 is free of emission of boric by-products, and significantly improved hydrogen release kinetics is also achieved, with pure hydrogen release at temperatures …
New Approach To Improve The Accuracy Of 3-D Shape Measurement Of Moving Object Using Phase Shifting Profilometry, Lei Lu, Jiangtao Xi, Yanguang Yu, Qinghua Guo
New Approach To Improve The Accuracy Of 3-D Shape Measurement Of Moving Object Using Phase Shifting Profilometry, Lei Lu, Jiangtao Xi, Yanguang Yu, Qinghua Guo
Faculty of Engineering and Information Sciences - Papers: Part A
When phase shifting profilometry (PSP) is emplyed for 3-D shape measurement, the object must be kept static during the projection and acquisition of the multiple fringe patterns. Errors will occur when the object moves and if the projection and capture of fringe patterns are not fast enough. In this paper, a new approach is proposed to tackle the problem, consisting of two steps. Firstly, the rotation matrix and translation vector describing the movement of the object are estimated using a set of marks placing on the surface of the object. Then the expressions of the fringe patterns under the influence …
Power Quality Emission Assessment Of Photovoltaic Inverters Based On Iec Technical Report 61000-3-15:2011, Devinda Perera, Philip Ciufo, Lasantha G. Meegahapola, Sarath Perera
Power Quality Emission Assessment Of Photovoltaic Inverters Based On Iec Technical Report 61000-3-15:2011, Devinda Perera, Philip Ciufo, Lasantha G. Meegahapola, Sarath Perera
Faculty of Engineering and Information Sciences - Papers: Part A
The International Electrotechnical Committee Technical Report IEC 61000-3-15:2011 provides electromagnetic compatibility requirements and test conditions for distributed generators up to 75 A per phase. In the current research, two commercially available photovoltaic (PV) inverters up to the capacity of 3600 W were tested following the guidelines proposed in IEC 61000-3-15 in relation to low order harmonic emission and flicker emission. In addition, the harmonic and flicker emission behaviour of the PV inverters were investigated under varying irradiation conditions. Both PV inverters were observed to comply with the emission requirements prescribed by the technical report under most conditions except for even …