Quantitative Scanning Transmission Electron Microscopy PDF Download
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Author: James Michael LeBeau
Publisher:
ISBN:
Category : Scanning transmission electron microscopy
Languages : en
Pages : 153
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Book Description
Atomic resolution electron microscopy ranks as one of the most important characterization methods in materials science. Example applications range from investigating single defects to determining detailed interface reconstructions. In recent years, high-angle annular dark-field (HAADF) scanning transmission electron microscopy (STEM) has become the technique of choice because the image intensities are considered to be intuitively interpretable and depend sensitively upon the atomic species present. The combination of experiment with electron scattering theory would thus enable the extraction of chemical information directly from the images without the need for calibration standards. However, theoretical predictions of contrast in atomic resolution electron microscopy images have never agreed quantitatively with experiments, raising questions as to whether the current understanding of image formation in the electron microscope is adequate.
Author: James Michael LeBeau
Publisher:
ISBN:
Category : Scanning transmission electron microscopy
Languages : en
Pages : 153
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Book Description
Atomic resolution electron microscopy ranks as one of the most important characterization methods in materials science. Example applications range from investigating single defects to determining detailed interface reconstructions. In recent years, high-angle annular dark-field (HAADF) scanning transmission electron microscopy (STEM) has become the technique of choice because the image intensities are considered to be intuitively interpretable and depend sensitively upon the atomic species present. The combination of experiment with electron scattering theory would thus enable the extraction of chemical information directly from the images without the need for calibration standards. However, theoretical predictions of contrast in atomic resolution electron microscopy images have never agreed quantitatively with experiments, raising questions as to whether the current understanding of image formation in the electron microscope is adequate.
Author: Stephen J. Pennycook
Publisher: Springer Science & Business Media
ISBN: 1441972005
Category : Technology & Engineering
Languages : en
Pages : 764
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Book Description
Scanning transmission electron microscopy has become a mainstream technique for imaging and analysis at atomic resolution and sensitivity, and the authors of this book are widely credited with bringing the field to its present popularity. Scanning Transmission Electron Microscopy(STEM): Imaging and Analysis will provide a comprehensive explanation of the theory and practice of STEM from introductory to advanced levels, covering the instrument, image formation and scattering theory, and definition and measurement of resolution for both imaging and analysis. The authors will present examples of the use of combined imaging and spectroscopy for solving materials problems in a variety of fields, including condensed matter physics, materials science, catalysis, biology, and nanoscience. Therefore this will be a comprehensive reference for those working in applied fields wishing to use the technique, for graduate students learning microscopy for the first time, and for specialists in other fields of microscopy.
Author:
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Category :
Languages : en
Pages :
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Author: Pirmin Kükelhan
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Category :
Languages : en
Pages :
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Author: Annelies De wael
Publisher:
ISBN:
Category :
Languages : en
Pages : 146
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Author: Amy Alexandra Sheader
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Category :
Languages : en
Pages :
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Author: Dongsheng He
Publisher:
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Category :
Languages : en
Pages :
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Author: Alina Bruma
Publisher: CRC Press
ISBN: 0429516169
Category : Technology & Engineering
Languages : en
Pages : 162
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Book Description
Scanning Transmission Electron Microscopy: Advanced Characterization Methods for Materials Science Applications The information comprised in this book is focused on discussing the latest approaches in the recording of high-fidelity quantitative annular dark-field (ADF) data. It showcases the application of machine learning in electron microscopy and the latest advancements in image processing and data interpretation for materials notoriously difficult to analyze using scanning transmission electron microscopy (STEM). It also highlights strategies to record and interpret large electron diffraction datasets for the analysis of nanostructures. This book: Discusses existing approaches for experimental design in the recording of high-fidelity quantitative ADF data Presents the most common types of scintillator-photomultiplier ADF detectors, along with their strengths and weaknesses. Proposes strategies to minimize the introduction of errors from these detectors and avenues for dealing with residual errors Discusses the practice of reliable multiframe imaging, along with the benefits and new experimental opportunities it presents in electron dose or dose-rate management Focuses on supervised and unsupervised machine learning for electron microscopy Discusses open data formats, community-driven software, and data repositories Proposes methods to process information at both global and local scales, and discusses avenues to improve the storage, transfer, analysis, and interpretation of multidimensional datasets Provides the spectrum of possibilities to study materials at the resolution limit by means of new developments in instrumentation Recommends methods for quantitative structural characterization of sensitive nanomaterials using electron diffraction techniques and describes strategies to collect electron diffraction patterns for such materials This book helps academics, researchers, and industry professionals in materials science, chemistry, physics, and related fields to understand and apply computer-science–derived analysis methods to solve problems regarding data analysis and interpretation of materials properties.
Author: Nicolas Brodusch
Publisher: Springer
ISBN: 9811044333
Category : Technology & Engineering
Languages : en
Pages : 143
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Book Description
This book highlights what is now achievable in terms of materials characterization with the new generation of cold-field emission scanning electron microscopes applied to real materials at high spatial resolution. It discusses advanced scanning electron microscopes/scanning- transmission electron microscopes (SEM/STEM), simulation and post-processing techniques at high spatial resolution in the fields of nanomaterials, metallurgy, geology, and more. These microscopes now offer improved performance at very low landing voltage and high -beam probe current stability, combined with a routine transmission mode capability that can compete with the (scanning-) transmission electron microscopes (STEM/-TEM) historically run at higher beam accelerating voltage
Author: Aniruddha Dutta
Publisher:
ISBN:
Category :
Languages : en
Pages : 126
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Book Description
In addition, the wedge-shaped FIB samples were used for studying the HAADF-STEM contrasts at an interface of a high- and a low-density material. The use of thick samples reveals an increased signal at the interfaces of high- and low-density materials. This effect can be explained by the transfer of scattered electrons from the high density material across the interface into the less-absorbing low-density material. A ballistic scattering model is proposed here for the HAADF-STEM contrasts at interfaces of thick materials using Python. The simulated HAADF-STEM signal is compared with experimental data to showcase the above phenomenon. A detailed understanding of the atomic number contrast in thick samples is developed based on the combination of experimental quantitative HAADF-STEM and simulated scattering. This approach is used to describe the observed features for Ag deposition on SU8 polymers.
