A5019874393- Advanced Electron Microscopy Techniques and Applications
- Mineral Processing and Grinding
- Geophysical and Geoelectrical Methods
- Electron and X-Ray Spectroscopy Techniques
- Iron oxide chemistry and applications
- Nanowire Synthesis and Applications
- Advancements in Battery Materials
- Advanced X-ray Imaging Techniques
- Semiconductor materials and interfaces
- Gold and Silver Nanoparticles Synthesis and Applications
- Semiconductor materials and devices
- High-pressure geophysics and materials
- Occupational and environmental lung diseases
- Mineralogy and Gemology Studies
- Geological and Geochemical Analysis
- Clay minerals and soil interactions
- Particle Dynamics in Fluid Flows
- Microstructure and mechanical properties
- earthquake and tectonic studies
- Nanocluster Synthesis and Applications
- X-ray Diffraction in Crystallography
- Metal Extraction and Bioleaching
- Air Quality and Health Impacts
- Extraction and Separation Processes
- Nanomaterials for catalytic reactions
Universitat de Barcelona
2012-2019
Centre Tecnologic de Telecomunicacions de Catalunya
2013
A recently developed technique based on the transmission electron microscope, which makes use of beam precession together with spot diffraction pattern recognition now offers possibility to acquire reliable orientation/phase maps a spatial resolution down 2 nm field emission gun microscope. The may be described as precession-assisted crystal orientation mapping in technique-transmission also known by its product name, ASTAR, and consists scanning precessed nanoprobe mode over specimen area,...
Exposure to ceramic powders, which is frequent during handling operations, known cause adverse health effects. Finding proxy parameters quantify exposure useful for efficient and timely assessments. Worker of five materials [a silica sand (SI1), three quartzes (Q1, Q2, Q3), a kaolin (K1)] with different particle shape (prismatic platy) sizes (3.4-120 µm) was assessed. Materials simulated using dry pendular mill under two energy settings (low high). Three repetitions kilos material were...
We report the first results of a combined focused ion beam and high-resolution transmission electron microscopy (FIB/HRTEM) investigation zoned laurite (RuS2)-erlichmanite (OS2) in mantle-hosted chromitites. These platinum-group minerals form isolated inclusions (<50 µm across) within larger crystals unaltered chromite Ojén ultramafic massif (southern Spain). High-magnification (HMEM), high angle-annular dark field (HAADF) precession diffraction (PED) data revealed that microscale normal...
The crystal structure of naturally occurring zaccariniite (RhNiAs) has been studied in Transmission Electron Microscopy (TEM) with variable angle Precession Diffraction (PED) techniques. analysis the data yielded tetragonal cell parameters 3.86, 6.77 Å and space group P4/nmm for basic structure, its constituent atom positions Ni, As Rh were determined as well by ab-initio resolution method. is related to "Structural characterization natural means Diffraction" (Roqué Rosell et al., 2019).
Transformations in Li-rich layered oxides have been extensively studied recently for their potential application Li-ion batteries. These materials attracted a lot of interest due to the high capacity offered by them. However, structure these pristine state is not clearly understood. Several reports assigned be trigonal (R-3m), monoclinic (c2/m), or combination both (composite). The present study discusses Li 1.2 (Ni 0.13 Mn 0.54 Co ) O 2 prepared with two different morphologies: plates and...
Commercial cathode materials used in lithium ion batteries such as transition metal oxides usually consist of 5 to 10 micron-sized, spherical secondary particles.These particles primary that are connected each other akin seeds a pomegranate.These nearly equiaxed shape and highly faceted.Recent aberration-corrected STEM-based studies have shown the select facets these consists thin layer spinel phase [1][2][3].The is formed specifically on correspond diffusion path ions.For example, Li-and...