A5042761007- Electron and X-Ray Spectroscopy Techniques
- Ion-surface interactions and analysis
- Advanced Electron Microscopy Techniques and Applications
- Integrated Circuits and Semiconductor Failure Analysis
- Iron oxide chemistry and applications
- Microfluidic and Bio-sensing Technologies
- Conducting polymers and applications
- Calcium Carbonate Crystallization and Inhibition
- Non-Destructive Testing Techniques
- Nanopore and Nanochannel Transport Studies
- Advancements in Battery Materials
- Force Microscopy Techniques and Applications
- Magnetic properties of thin films
- Graphene research and applications
- Diamond and Carbon-based Materials Research
- Polymer Surface Interaction Studies
- Advanced Battery Materials and Technologies
- Gold and Silver Nanoparticles Synthesis and Applications
- Leech Biology and Applications
- Wnt/β-catenin signaling in development and cancer
- Nanoporous metals and alloys
- Near-Field Optical Microscopy
- Carbon and Quantum Dots Applications
- MXene and MAX Phase Materials
- Electrical and Bioimpedance Tomography
Queensland University of Technology
2017-2024
California Institute of Technology
2022-2024
Kavli Energy NanoScience Institute
2022-2023
Brisbane School of Theology
2019-2021
Institute for the Future
2021
Bielefeld University
2010-2014
Nanotextured surfaces (NTSs) are critical to organisms as self-adaptation and survival tools. These NTSs have been actively mimicked in the process of developing bactericidal for diverse biomedical hygiene applications. To design fabricate topographies effectively various applications, understanding mechanism NTS nature is essential. The current mechanistic explanations on natural activity nanopillars not utilized recent advances microscopy study interaction. This research reveals...
This paper highlights recent advances in synthesis, self-assembly and sensing applications of monodisperse magnetic Co Co-alloyed nanoparticles. A brief introduction to solution phase synthesis techniques as well the properties aspects process nanoparticles will be given with emphasis placed on selected applications, before developments particles sensor devices are outlined. Here, focuses fabrication granular magnetoresistive sensors by employment themselves layers. The role interparticle...
Abstract Low‐cost flexible organic light‐emitting diodes (OLEDs) with nanoemitter material from waste open up new opportunities for sustainable technology. The common emitter materials generated are carbon dots (CDs). However, these have poor luminescent properties. Further solid‐state emission quenching makes application in display devices challenging. Here, and rigid OLED demonstrated using self‐assembled 2D arrays of CDs derived material, viz., human hair. High‐performance a quantum yield...
A strategy to utilize carbon dots for simultaneously improving photovoltaic performance and longevity of metal halide perovskite solar cells.
A direct one-step nano-gold printing process from a HAuCl<sub>4</sub> solution precursor is demonstrated using an atmospheric-pressure plasma jet.
Silicon is a promising anode material for rechargeable Li-ion battery (LIB) due to its high energy density and relatively low operating voltage. However, silicon based electrodes suffer from rapid capacity degradation during electrochemical cycling. The decay predominantly caused by (i) cracking large volume variations lithium insertion/extraction (ii) surface excessive solid electrolyte interface (SEI) formation. In this work, we demonstrate that coating of a-Si thin film with Li-active,...
Exposed to ionizing radiation, nanomaterials often undergo unusual transformations compared their bulk form. However, atomic-level mechanisms of such are largely unknown. This work visualizes and quantifies nanopore shrinkage in nanoporous alumina subjected low-energy ion beams a helium microscope. Mass transport porous is thus simultaneously induced imaged with nanoscale precision, thereby relating interactions mesoscopic deformations. The interplay between chemical bonds, disorders,...
Osteogenic differentiation of various adult stem cell populations such as neural crest-derived cells is great interest in the context bone regeneration. Ideally, exogenous should mimic an endogenous process, which partly mediated by topological cues. To elucidate osteoinductive potential porous substrates with different pore diameters (30 nm, 100 nm), human isolated from inferior nasal turbinate were cultivated on surface nanoporous titanium covered membranes without additional chemical or...
Summary Ion beam induced heat damage in soft materials and biological samples is not yet well understood Focused Beam systems (FIBs). The work presented here discusses the physics behind ion – sample interactions effects which lead to increases temperature potential damage. A model by can be estimated allows parameters determined that reduce/prevent was derived from Fourier's law of transfer compared finite element simulations, numerical modelling results experiments. suggests...
Oriented attachment has created a great debate about the description of crystal growth throughout last decade. This aggregation-based model successfully described biomineralization processes as well forms inorganic growth, which could not be explained by classical theory. Understanding nanoparticle is essential since physical properties, such magnetic behavior, are highly dependent on microstructure, morphology and composition crystals. In this work, underlying cobalt ferrite nanoparticles...
A dark-field scanning transmission ion microscopy detector was designed for the helium microscope. The detection principle is based on a secondary electron conversion holder with an exchangeable aperture strip allowing its acceptance angle to be tuned from 3 98 mrad. contrast mechanism and performance were investigated using freestanding nanometer-thin carbon membranes. results demonstrate that can optimized either most efficient signal collection or maximum image contrast. setup allows...
Abstract Layered molybdenum disulphide (MoS 2 ) crystals in combination with graphene create the opportunity for development of heterostructures tailored surface and structural properties energy storage applications. Herein, 2D are developed by growing MoS on epitaxial self‐standing nanoporous (NPG) using chemical vapor deposition (CVD). The effect substrate as well different CVD growth parameters such temperature, amount sulfur MoO 3 precursors, argon flow is systematically investigated....
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Ion beam-induced heat damage in thermally low conductive specimens such as biological samples is gaining increased interest within the scientific community. This partly due to use of FIB-SEMs biology well development complex materials, polymers, which need be analyzed. The work presented here looks at physics behind ion beam–sample interactions and effect incident energy (set by acceleration voltage) on inducing increases sample temperature potential materials polymers samples. for different...
An abstract is not available for this content so a preview has been provided. As you have access to content, full PDF via the ‘Save PDF’ action button.
Electron backscatter diffraction (EBSD) is a powerful characterization technique which allows the study of microstructure, grain size, and orientation as well strain crystallographic sample. In addition, can be used for phase analysis. A mirror-flat sample surface required this analysis different polishing approaches have been over years. commonly approach focused ion beam (FIB) polishing. Unfortunately, artefacts that easily induced by Ga FIB are seldom published. This work aims to provide...
Journal Article Large Scale Xe PFIB-SEM Analysis of Shale: Nanometer Resolution Across Millimeters Rock…What is Still Possible? Get access Annalena Wolff, Wolff California Institute Technology, Kavli Nanoscience Institute, Pasadena, CA, USAFaculty Science, Queensland University Brisbane, QLD, Australia Corresponding author: awolff@caltech.edu Search for other works by this author on: Oxford Academic Google Scholar Christoph Schrank, Schrank Faculty Michael Jones Microscopy and Microanalysis,...
Journal Article Focused Ion Beams in Biology: How the Helium Microscope and FIB/SEMs Help Reveal Nature's Tiniest Structures Get access Annalena Wolff, Wolff Central Analytical Research Facility, Institute for Future Environments, Queensland University of Technology (QUT), Brisbane, Australia Corresponding author: Annalena.wolff@qut.edu.au Search other works by this author on: Oxford Academic Google Scholar Nico Klingner, Klingner Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany...