A5035497288- Electron and X-Ray Spectroscopy Techniques
- Advanced Materials Characterization Techniques
- Advanced Electron Microscopy Techniques and Applications
- X-ray Spectroscopy and Fluorescence Analysis
- Advancements in Battery Materials
- Advancements in Photolithography Techniques
- Integrated Circuits and Semiconductor Failure Analysis
- Aluminum Alloy Microstructure Properties
- Advanced Battery Materials and Technologies
- Ion-surface interactions and analysis
- Microstructure and mechanical properties
- Surface and Thin Film Phenomena
- Machine Learning in Materials Science
- Aluminum Alloys Composites Properties
- High-Temperature Coating Behaviors
- Metal and Thin Film Mechanics
- Advanced materials and composites
- Extraction and Separation Processes
- Advanced Battery Technologies Research
- Additive Manufacturing Materials and Processes
- Non-Destructive Testing Techniques
- Magnesium Alloys: Properties and Applications
- High Entropy Alloys Studies
- Nuclear Physics and Applications
- Semiconductor materials and devices
McGill University
2016-2025
Concordia University
2013
Microscopy Society of America
2002
Université de Sherbrooke
1991-2001
University of Duisburg-Essen
1997
University of Alabama at Birmingham
1997
The University of Melbourne
1997
University of Tennessee at Knoxville
1997
Polytechnique Montréal
1991
Abstract Monte Carlo simulations have been widely used by microscopists for the last few decades. In beginning it was a tedious and slow process, requiring high level of computer skills from users long computational times. Recent progress in microelectronics industry now provides researchers with affordable desktop computers clock rates greater than 3 GHz. With this type computing power routinely available, simulation is no longer an exclusive or (overnight) process. The aim paper to present...
Abstract This paper is a guide to the ANSI standard C code of CASINO program which single scattering Monte CArlo SImulation electroN trajectory in sOlid specially designed for low‐beam interaction bulk and thin foil. can be used either on DOS‐based PC or UNIX‐based workstation. uses tabulated Mott elastic cross sections experimentally determined stopping powers. Function pointers are most essential routine so that different physical models easily implemented. generate all recorded signals...
Abstract This paper presents routines to compute the Mott cross section used in CASINO program (Monte CArlo SImulation of electroN trajectory sOlid). The tabulated values computed work Czyzewski et al . (1990). is available over range 0.02 30 keV and for first 94 elements Periodic Table. are written C language use a binary file interpolate section. routine computes total sections; second calculates polar angle collision. Backscattered coefficients using different compared C, Al, Ag, Au....
Li metal batteries suffer from dendrite formation which causes short circuit of the battery. Therefore, it is important to understand chemical composition and growth mechanism dendrites that limit battery efficiency cycle life. In this study, in situ scanning electron microscopy was employed monitor cycling behavior all-solid with LiFePO4 cathodes. Chemical analyses were conducted using a windowless energy dispersive spectroscopy detector, showed are not metallic lithium as universally...
Lithium is the key element for development of battery and new technology an analytical technique to spatially quantitatively resolve this importance. Detection Li K in pure metallic lithium now possible Scanning Electron Microscope (SEM) with newly designed Energy Dispersive Spectroscopy (EDS). However, work clearly showing, first time using EDS, detection several binary compounds (LiH, Li3 N, Li2 S, LiF LiCl). Experimental X-rays intensity compared a specially modified Monte Carlo...
Mitigating electro-chemo-mechanical failures enables nearly all-active-material Ni- and Co-free disordered rock-salt cathodes for Li-ion batteries.
Abstract This paper is a description of the stopping power routine utilized in CASINO program that based on experimental measurement energy loss function (ELF). In addition, we present an ANSI C standard can be used to generate data needed for routine. Both optical and spectrum (ELS) measurements ELF as input compute power. For ELS, only single scattering needed. Hence, given element or compound interest easily performed program. The resulting effect using these powers Monte Carlo...
Summary A charge‐coupled device camera of an electron backscattered diffraction system in a scanning microscope was positioned below thin specimen and transmission Kikuchi patterns were collected. Contrary to diffraction, forward scatter provides phase identification orientation mapping at the nanoscale. The minimum Pd particle size for which pattern detected indexed reliably 5.6 nm. An resolution 5 nm measured 30 kV. obtained with same order magnitude than that reported nanodiffraction...
Zero‐strain and long‐term stability of nanoscale lithium titanate (LTO) anode materials make possible the fabrication exceptionally stable ion batteries. But one issue must be considered that nanostructure‐induced relaxation in 2D LTO nanosheets which profoundly modifies their Li storage properties structural stability. Excessively intercalated ions at both 8 a 16 c sites trigger nucleation relaxed structure near‐surface region, impedes Li‐ion diffusion causes increasing polarization...
Abstract Lithium metal is a favorable anode material in all-solid Li-polymer batteries because of its high energy density. However, dendrite formation on lithium causes safety concerns. Here we obtain images the Li-metal surface during cycling using situ scanning electron microscopy. Constructing videos from enables us to monitor failure mechanism battery. Our results show dendrites edge and isles decomposed bis(trifluoromethanesulfonyl)imide grain boundaries. Cycling at rates opening...
Abstract Dendrite formation, which could cause a battery short circuit, occurs in batteries that contain lithium metal anodes. In order to suppress dendrite growth, the use of electrolytes with high shear modulus is suggested as an ionic conductive separator batteries. One promising candidate for this application Li 7 La 3 Zr 2 O 12 (LLZO) because it has excellent mechanical properties and chemical stability. work, situ scanning electron microscopy (SEM) technique was employed monitor...
A method was developed to suppress the crack formation during laser powder bed fusion (LPBF) of molybdenum (Mo). The uses a nitrogen (N2) atmosphere fabricate crack-free samples without any additional processing. To compare with effect N2 atmosphere, were prepared under an argon (Ar) as well same process parameters. microstructure analyses by optical and high-resolution electron microscopy revealed that produced this condition, whereas grain boundary cracks observed throughout sample...
The doping strategy employed for enhancing the hole conductivity of spiro-OMeTAD as a transport layer (HTL) in perovskite solar cells (PSCs) is rarely specified literature. However, revealed this work, specifics process with respect to type storage and its duration can have important consequences evolution hysteresis dynamics PSCs. variability photovoltaic metrics loci current–voltage (J–V) curves are studied before after light soaking, well at different scan rates, determine operational...
A new Monte Carlo program, Win X-ray, is presented that predicts X-ray spectra measured with an energy dispersive spectrometer (EDS) attached to a scanning electron microscope (SEM) operating between 10 and 40 keV. All the underlying equations of simulation model are included. By simulating spectra, it possible establish optimum conditions perform specific analysis as well detection limits or explore peak overlaps. Examples simulations also demonstrate utility this program. Although article...