A5032640901- Electron and X-Ray Spectroscopy Techniques
- Advanced Electron Microscopy Techniques and Applications
- Integrated Circuits and Semiconductor Failure Analysis
- Non-Destructive Testing Techniques
- Sparse and Compressive Sensing Techniques
- Advancements in Battery Materials
- Advancements in Photolithography Techniques
- Atomic and Subatomic Physics Research
- Photoacoustic and Ultrasonic Imaging
- Silicon and Solar Cell Technologies
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Cultural Heritage Materials Analysis
- Seismic Imaging and Inversion Techniques
- Advanced Fluorescence Microscopy Techniques
- Protein purification and stability
- Medical Imaging Techniques and Applications
- Cell Image Analysis Techniques
- Electrical and Bioimpedance Tomography
- Advanced Data Storage Technologies
- Drug Solubulity and Delivery Systems
- Surface and Thin Film Phenomena
- Image Processing Techniques and Applications
- Thermal and Kinetic Analysis
- Age of Information Optimization
University of Liverpool
2019-2024
University of Reading
2018-2020
Liverpool Hospital
2020
Abstract The market dynamics, and their impact on a future circular economy for lithium-ion batteries (LIB), are presented in this roadmap, with safety as an integral consideration throughout the life cycle. At point of end-of-life (EOL), there is range potential options—remanufacturing, reuse recycling. Diagnostics play significant role evaluating state-of-health condition batteries, improvements to diagnostic techniques evaluated. present, manual disassembly dominates EOL disposal,...
Determining the optimum electron dose distribution for damage mitigated scanning transmission microscopy imaging using subsampling and image inpainting.
When high-energy electrons from scanning transmission electron microscope (STEM) are interacting with the liquid, vast majority of chemical reactions that observed induced by radiolysis breakdown liquid molecules.
Images and spectra obtained from aberration corrected scanning transmission electron microscopes (STEM) are now used routinely to quantify the morphology, structure, composition, chemistry, bonding, optical/electronic properties of nanostructures, interfaces, defects in many materials/biological systems. However, obtaining quantitative reproducible atomic resolution observations some experiments is actually harder with these ground-breaking instrumental capabilities, as increase beam current...
Abstract Traditional image acquisition for cryo focused ion-beam scanning electron microscopy (FIB-SEM) tomography often sees thousands of images being captured over a period many hours, with immense data sets produced. When imaging beam sensitive materials, these are compromised by additional constraints related to damage and the devitrification material during imaging, which renders both costly unreliable. Subsampling inpainting proposed as solutions aspects, allowing fast low-dose take...
Despite the widespread use of Scanning Transmission Electron Microscopy (STEM) for observing structure materials at atomic scale, a detailed understanding some relevant electron beam damage mechanisms is limited. Recent reports suggest that certain types can be modelled as diffusion process and accumulation effects this must kept low in order to reduce damage. We therefore develop an explicit mathematical formulation spatiotemporal processes STEM take into account both instrument sample...
Abstract Electron backscatter diffraction (EBSD) has developed over the last few decades into a valuable crystallographic characterisation method for wide range of sample types. Despite these advances, issues such as complexity preparation, relatively slow acquisition, and damage in beam‐sensitive samples, still limit quantity quality interpretable data that can be obtained. To mitigate issues, here we propose based on subsampling probe positions subsequent reconstruction an incomplete set....
Abstract Scanning transmission electron microscopy (STEM) provides structural analysis with sub-angstrom resolution. But the pixel-by-pixel scanning process is a limiting factor in acquiring high-speed data. Different strategies have been implemented to increase speeds while at same time minimizing beam damage via optimizing strategy. Here, we achieve highest possible speed by eliminating image acquisition dead induced flyback combined reducing amount of pixels sparse imaging. A calibration...
Scanning transmission electron microscopy images can be complex to interpret on the atomic scale as contrast is sensitive multiple factors such sample thickness, composition, defects and aberrations. Simulations are commonly used validate or real experimental images, but they come at a cost of either long computation times specialist hardware graphics processing units. Recent works in compressive sensing for STEM have shown that it possible significantly reduce amount acquired signal still...
Scanning Transmission Electron Microscopy (STEM) offers high-resolution images that are used to quantify the nanoscale atomic structure and composition of materials biological specimens. In many cases, however, resolution is limited by electron beam damage, since in traditional STEM, a focused scans every location sample raster fashion. this paper, we propose scanning method based on theory Compressive Sensing (CS) subsampling probe locations using line hop sampling scheme significantly...
Cryo Focused Ion-Beam Scanning Electron Microscopy (cryo FIB-SEM) enables three-dimensional and nanoscale imaging of biological specimens via a slice view mechanism. The FIB-SEM experiments are, however, limited by slow (typically, several hours) acquisition process the high electron doses imposed on beam sensitive specimen can cause damage. In this work, we present compressive sensing variant cryo capable reducing operational dose increasing speed. We propose two Targeted Sampling (TS)...
A new crystalline form of αβ-D-lactose (C12H22O11) has been prepared by the rapid drying an approximately 40% w/v syrup D-lactose. Initially identified from its novel powder X-ray diffraction pattern, monoclinic crystal structure was solved a microcrystal recovered generally polycrystalline mixed-phase residue obtained at end step. This is second to be and it high degree structural three-dimensional similarity previously triclinic form.
Journal Article Compressed STEM Simulations Get access A W Robinson, Robinson Mechanical, Materials, & Aerospace Engineering, University of Liverpool, U.K Corresponding author: A.W.Robinson@liverpool.ac.uk Search for other works by this author on: Oxford Academic Google Scholar D Nicholls, Nicholls J Wells, Wells Distributed Algorithms CDT, Moshtaghpour, Moshtaghpour U.KRosalind Franklin Institute, Harwell Science Innovation Campus, Didcot, U. K I Kirkland, Kirkland Rosalind KDepartment...
Amorphous spray-dried dispersions (SDDs) are a key enabling technology for oral solid dosage formulations, used to improve dissolution behaviour and clinical exposure of poorly soluble active pharmaceutical ingredients (APIs). Appropriate assessment amorphous mechanisms is an ongoing challenge. Here we outline the novel application using focused beam reflectance measurement (FBRM) analyse particle populations orthogonal USP 2 dissolution. The relative impact polymer substitution attributes...
Despite advancements in electron backscatter diffraction (EBSD) detector speeds, the acquisition rates of 4-Dimensional (4D) EBSD data, i.e., a collection 2-dimensional (2D) maps for every position convergent probe on sample, is limited by capacity detector.Such 4D data enables computation of, e.g., band contrast and Inverse Pole Figure (IPF) maps, used material characterisation.In this work we propose fast method through subsampling 2-D positions inpainting.We investigate reconstruction...
Sugars are a near-ubiquitous ingredient in food products, yet rising rates of obesity and related illnesses have prompted drive to reduce their content. The use amorphous sugars confectionery may be one way achieving this by providing similarly sweet sensation due increased dissolution rate. However, accurate crystalline form characterisation quantification complex foodstuffs can difficult. In study, method for the chocolate precursors, using powder X-ray diffraction, is presented. was first...
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Despite their proven success and broad applicability to Electron Microscopy (EM) data, joint dictionary-learning sparse-coding based inpainting algorithms have so far remained impractical for real-time usage with an Microscope. For many EM applications, the reconstruction time a single frame is orders of magnitude longer than data acquisition time, making it impossible perform exclusively subsampled acquisition. This limitation has led development SenseAI, C++/CUDA library capable extremely...
Electron backscatter diffraction (EBSD) has developed over the last few decades into a valuable crystallographic characterisation method for wide range of sample types. Despite these advances, issues such as complexity preparation, relatively slow acquisition, and damage in beam-sensitive samples, still limit quantity quality interpretable data that can be obtained. To mitigate issues, here we propose based on subsampling probe positions subsequent reconstruction an incomplete dataset. The...