Electron Crystallography

2006-08-18 Science

Author : Thomas E. Weirich
Release : 2006-08-18
Genre : Science
Kind : eBook
Book Rating : 204/5 ( reviews)

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Book Synopsis Electron Crystallography by : Thomas E. Weirich

Download or read book Electron Crystallography written by Thomas E. Weirich. This book was released on 2006-08-18. Available in PDF, EPUB and Kindle. Book excerpt: During the last decade we have been witness to several exciting achievements in electron crystallography. This includes structural and charge density studies on organic molecules complicated inorganic and metallic materials in the amorphous, nano-, meso- and quasi-crystalline state and also development of new software, tailor-made for the special needs of electron crystallography. Moreover, these developments have been accompanied by a now available new generation of computer controlled electron microscopes equipped with high-coherent field-emission sources, cryo-specimen holders, ultra-fast CCD cameras, imaging plates, energy filters and even correctors for electron optical distortions. Thus, a fast and semi-automatic data acquisition from small sample areas, similar to what we today know from imaging plates diffraction systems in X-ray crystallography, can be envisioned for the very near future. This progress clearly shows that the contribution of electron crystallography is quite unique, as it enables to reveal the intimate structure of samples with high accuracy but on much smaller samples than have ever been investigated by X-ray diffraction. As a tribute to these tremendous recent achievements, this NATO Advanced Study Institute was devoted to the novel approaches of electron crystallography for structure determination of nanosized materials.

Electron Crystallography

2011-08-18 Science

Author : Xiaodong Zou
Release : 2011-08-18
Genre : Science
Kind : eBook
Book Rating : 200/5 ( reviews)

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Book Synopsis Electron Crystallography by : Xiaodong Zou

Download or read book Electron Crystallography written by Xiaodong Zou. This book was released on 2011-08-18. Available in PDF, EPUB and Kindle. Book excerpt: In the modern world of ever smaller devices and nanotechnology, electron crystallography emerges as the most important method capable of determining the structure of minute objects down to the size of individual atoms. Crystals of only a few millionths of a millimetre are studied. This is the first textbook explaining how this is done. Great attention is given to symmetry in crystals and how it manifests itself in electron microscopy and electron diffraction, and how this symmetry can be determined and taken advantage of in achieving improved electron microscopy images and solving crystal structures from electron diffraction patterns. Theory and practice are combined; experimental images, diffraction patterns, formulae and numerical data are discussed in parallel, giving the reader a complete understanding of what goes on inside the "black boxes" of computer programs. This up-to-date textbook contains the newest techniques in electron crystallography, including detailed descriptions and explanations of the recent remarkable successes in determining the very complex structures of zeolites and intermetallics. The controversial issue of whether there is phase information present in electron micrsocopy images or not is also resolved once and for all. The extensive appendices include computer labs which have been used at various courses at Stockholm University and international schools in electron crystallography, with applications to the textbook. Students can download image processing programs and follow these lab instructions to get a hands-on experience of electron crystallography.

Electron Crystallography of Biological Macromolecules

2007 Science

Author : Robert M. Glaeser
Release : 2007
Genre : Science
Kind : eBook
Book Rating : /5 ( reviews)

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Book Synopsis Electron Crystallography of Biological Macromolecules by : Robert M. Glaeser

Download or read book Electron Crystallography of Biological Macromolecules written by Robert M. Glaeser. This book was released on 2007. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a complete introduction to all major topics needed in order to use electron microscopy as a research tool in structural biology. Written by a group of 5 well-known pioneers of the field of electron cryo-microscopy of biological macromolecules, this book offers a depth of knowledge and expertise that could only be replicated from the primary literature with great difficulty.

Electron Crystallography

2013-04-17 Science

Author : D. Dorset
Release : 2013-04-17
Genre : Science
Kind : eBook
Book Rating : 712/5 ( reviews)

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Book Synopsis Electron Crystallography by : D. Dorset

Download or read book Electron Crystallography written by D. Dorset. This book was released on 2013-04-17. Available in PDF, EPUB and Kindle. Book excerpt: The re-emergent field of quantitative electron crystallography is described by some of its most eminent practitioners. They describe the theoretical framework for electron scattering, specimen preparation, experimental techniques for optimum data collection, the methodology of structure analysis and refinement, and a range of applications to inorganic materials (including minerals), linear polymers, small organic molecules (including those used in nonlinear optical devices), incommensurately modulated structures (including superconductors), alloys, and integral membrane proteins. The connection between electron crystallography and X-ray crystallography is clearly defined, especially in the utilisation of the latest methods for direct determination of crystallographic phases, as well as the unique role of image analysis of high-resolution electron micrographs for phase determination. Even the aspect of multiple beam dynamic diffraction (once dreaded because it was thought to preclude ab initio analysis) is considered as a beneficial aid for symmetry determination as well as the elucidation of crystallographic phases, and as a criterion for monitoring the progress of structure refinement. Whereas other texts have hitherto preferentially dealt with the analysis of electron diffraction and image data from thin organic materials, this work discusses - with considerable optimism - the prospects of looking at `harder' materials, composed of heavier atoms. Audience: Could be used with profit as a graduate-level course on electron crystallography. Researchers in the area will find a statement of current progress in the field.

Electron Crystallography

2020-07-22 Science

Author : Devinder Singh
Release : 2020-07-22
Genre : Science
Kind : eBook
Book Rating : 898/5 ( reviews)

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Book Synopsis Electron Crystallography by : Devinder Singh

Download or read book Electron Crystallography written by Devinder Singh. This book was released on 2020-07-22. Available in PDF, EPUB and Kindle. Book excerpt: In the quantitative determination of new structures, micro-/nano-crystalline materials pose significant challenges. The different properties of materials are structure-dependent. Traditionally, X-ray crystallography has been used for the analysis of these materials. Electron diffraction is a technique that complements other techniques; for example, single crystal X-ray diffraction and powder X-ray diffraction for determination of structure. Electron diffraction plays a very important role when crystals are very small using single crystal X-ray diffraction or very complex for structure solution by powder X-ray diffraction. With the introduction of advanced methodologies, important methods for crystal structural analysis in the field of electron crystallography have been discovered, such as rotation electron diffraction (RED) and automated electron diffraction tomography (ADT). In recent years, large numbers of crystal structures have been solved using electron crystallography.

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