A5067629401- Gas Sensing Nanomaterials and Sensors
- Analytical Chemistry and Sensors
- Advanced Chemical Sensor Technologies
- ZnO doping and properties
- Transition Metal Oxide Nanomaterials
- Advanced Battery Materials and Technologies
- Corrosion Behavior and Inhibition
- Advancements in Battery Materials
- Concrete Corrosion and Durability
- Electronic and Structural Properties of Oxides
- Advanced Sensor and Energy Harvesting Materials
- Hydrogen embrittlement and corrosion behaviors in metals
- Acoustic Wave Resonator Technologies
- Electrochemical Analysis and Applications
- Ionic liquids properties and applications
- Surface Modification and Superhydrophobicity
- Advanced Battery Technologies Research
- Catalytic Processes in Materials Science
- Semiconductor materials and devices
- Additive Manufacturing and 3D Printing Technologies
- Advancements in Solid Oxide Fuel Cells
- Fuel Cells and Related Materials
- Carbon Nanotubes in Composites
- Ga2O3 and related materials
- Anodic Oxide Films and Nanostructures
CSIRO Manufacturing
2013-2024
Commonwealth Scientific and Industrial Research Organisation
2014-2023
Clayton Foundation
2019-2020
Metal Industries Research & Development Centre
2020
Materials Science & Engineering
2013-2014
Japan Society for the Promotion of Science
2011-2013
Kyushu University
2011-2013
RMIT University
2007-2012
RMIT Europe
2012
IIT@MIT
2010
Atomically thin WO3 is fabricated using a three-step process, involving wet-chemical synthesis of hydrated-WO3, mechanical exfoliation fundamental layers and dehydration by annealing at 300 °C. Atomic force microscopy reveals that the minimum resolvable thickness hydrated flakes to be ∼1.4 nm, which corresponds unit-cell height. The subsequent temperature determines degree thereby crystallographic structure resultant WO3. dehydrated are characterized Raman spectroscopy reveal spectroscopic...
Among the available metal oxide nanostructures, tungsten has remained, at times, troublesome to fabricate, with many synthetic methods often requiring exotic equipment and or reagents. In this work, we present a systematic investigation demonstrating new method for deposition of anhydrous hydrated nanostructured thin films via spin coating. The attributes these materials include following: high surface area, controllable deposition, compatibility existing semiconductor fabrication...
Progressive restrictions on the use of toxic chromate-based corrosion inhibitors present serious technical challenges.
Anodization at elevated temperatures in nitric acid has been used for the production of highly porous and thick tungsten trioxide nanostructured films photosensitive device applications. The anodization process resulted platelet crystals with thicknesses 20−60 nm lengths 100−1000 nm. Maximum ∼2.4 μm were obtained after 4 h 20 V. X-ray diffraction analysis revealed that as-prepared anodized samples contain predominantly hydrated tungstite phases depending on voltage, while annealed 400 °C are...
It is well known that WO3 interacts efficiently with H2 gas in the presence of noble metals (such as Pd, Pt and Au) at elevated temperatures, changing its optical behaviors; crystallinity plays an important role these interactions. For first time, we investigated situRaman spectra changes films different crystal phases, while incorporating Pd catalysts, temperatures H2. The Pd/WO3 were prepared using RF sputtering subsequently annealed 300, 400 500 °C air order to alter dominant phase. then...
This paper reports the electrowetting properties of ZnO nanorods. These nanorods were grown on indium tin oxide (ITO) substrates using different liquid-phase deposition techniques and hydrophobized with sputtered Teflon. The surfaces display superhydrophobic properties. When applied voltages are less than 35 V, contact angle change is small exhibits instant reversibility. For higher voltages, larger changes observed. However, surface was not reversible after removing voltage required...
The adsorption of NO2 onto oxygen vacancy sites, which naturally exist on the ZnO(21̅1̅0) surface, is widely believed to be one most important factors affecting gas sensor responses for this system. In work we have examined surface reconstruction and relaxation, charge transfer, Bader charges, density states, vibrational frequencies, binding energies stable structures adsorbed defect containing vacancies (VO••). Multiple minimum energy were found with order ∼1 eV, indicating chemisorption...
The development of three-dimensional (3D) printed sensors attracts high interest from the smart electronic industry owing to significant geometric freedom allowed by printing process and potential for bespoke composite feedstocks being imbued with specific material properties. In particular, feedstock extrusion (MEX) additive manufacturing fused filament fabrication can be provided piezoelectricity electrical conductivity. However, often requires poling activation. this study, a candidate...
Augmented cycling performance in lithium metal batteries is often attributed to the formation of a stable solid electrolyte interphase (SEI) layer that forms on Li surface. Boronium cation-based ionic liquid (trimethylamine)(dimethylethylamine)dihydroborate bis(trifluoromethanesulfonyl)imide, [NNBH2][TFSI], has shown Li|LiFePO4 cell; however, it not known why this performs well nor what species contribute SEI formation. To gain an understanding using boronium ILs, chemical stability and...
The carbon monoxide (CO) sensitivity of a mixed-potential-type yttria-stabilized zirconia (YSZ)-based tubular-type sensor utilizing ZnCr(2)O(4) sensing electrode (SE) was tuned by the addition different precious metal nanoparticles (Ag, Au, Ir, Pd, Pt, Ru and Rh; 1 wt % each) into layer. After measuring electromotive force (emf) response fabricated SEs to 100 ppm CO against Pt/air-reference (RE), ZnCr(2)O(4)-Au nanoparticle composite (ZnCr(2)O(4)(+Au)-SE) found give highest CO. A linear...