structure analysis by small angle x ray and neutron scattering

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Structure Analysis By Small Angle X Ray And Neutron Scattering

Author : L.A. Feigin
ISBN : 9781475766240
Genre : Science
File Size : 24. 15 MB
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Small-angle scattering of X rays and neutrons is a widely used diffraction method for studying the structure of matter. This method of elastic scattering is used in various branches of science and technology, includ ing condensed matter physics, molecular biology and biophysics, polymer science, and metallurgy. Many small-angle scattering studies are of value for pure science and practical applications. It is well known that the most general and informative method for investigating the spatial structure of matter is based on wave-diffraction phenomena. In diffraction experiments a primary beam of radiation influences a studied object, and the scattering pattern is analyzed. In principle, this analysis allows one to obtain information on the structure of a substance with a spatial resolution determined by the wavelength of the radiation. Diffraction methods are used for studying matter on all scales, from elementary particles to macro-objects. The use of X rays, neutrons, and electron beams, with wavelengths of about 1 A, permits the study of the condensed state of matter, solids and liquids, down to atomic resolution. Determination of the atomic structure of crystals, i.e., the arrangement of atoms in a unit cell, is an important example of this line of investigation.

Small Angle X Ray And Neutron Scattering From Solutions Of Biological Macromolecules

Author : Dmitri I. Svergun
ISBN : 9780191507038
Genre : Science
File Size : 78. 15 MB
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Small-angle scattering of X-rays (SAXS) and neutrons (SANS) is an established method for the structural characterization of biological objects in a broad size range from individual macromolecules (proteins, nucleic acids, lipids) to large macromolecular complexes. SAXS/SANS is complementary to the high resolution methods of X-ray crystallography and nuclear magnetic resonance, allowing for hybrid modeling and also accounting for available biophysical and biochemical data. Quantitative characterization of flexible macromolecular systems and mixtures has recently become possible. SAXS/SANS measurements can be easily performed in different conditions by adding ligands or binding partners, and by changing physical and/or chemical characteristics of the solvent to provide information on the structural responses. The technique provides kinetic information about processes like folding and assembly and also allows one to analyze macromolecular interactions. The major factors promoting the increasingly active use of SAXS/SANS are modern high brilliance X-ray and neutron sources, novel data analysis methods, and automation of the experiment, data processing and interpretation. In this book, following the presentation of the basics of scattering from isotropic macromolecular solutions, modern instrumentation, experimental practice and advanced analysis techniques are explained. Advantages of X-rays (rapid data collection, small sample volumes) and of neutrons (contrast variation by hydrogen/deuterium exchange) are specifically highlighted. Examples of applications of the technique to different macromolecular systems are considered with specific emphasis on the synergistic use of SAXS/SANS with other structural, biophysical and computational techniques.

Synaptic Vesicles Studied By Small Angle X Ray Scattering

Author : Simon Castorph
ISBN : 9783863950972
Genre :
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X Ray And Neutron Techniques For Nanomaterials Characterization

Author : Challa S.S.R. Kumar
ISBN : 9783662486061
Genre : Technology & Engineering
File Size : 74. 30 MB
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Fifth volume of a 40 volume series on nanoscience and nanotechnology, edited by the renowned scientist Challa S.S.R. Kumar. This handbook gives a comprehensive overview about X-ray and Neutron Techniques for Nanomaterials Characterization. Modern applications and state-of-the-art techniques are covered and make this volume an essential reading for research scientists in academia and industry.

Characterization Of Polymer Blends

Author : Sabu Thomas
ISBN : 9783527645619
Genre : Science
File Size : 62. 80 MB
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Filling the gap for a reference dedicated to the characterization of polymer blends and their micro and nano morphologies, this book provides comprehensive, systematic coverage in a one-stop, two-volume resource for all those working in the field. Leading researchers from industry and academia, as well as from government and private research institutions around the world summarize recent technical advances in chapters devoted to their individual contributions. In so doing, they examine a wide range of modern characterization techniques, from microscopy and spectroscopy to diffraction, thermal analysis, rheology, mechanical measurements and chromatography. These methods are compared with each other to assist in determining the best solution for both fundamental and applied problems, paying attention to the characterization of nanoscale miscibility and interfaces, both in blends involving copolymers and in immiscible blends. The thermodynamics, miscibility, phase separation, morphology and interfaces in polymer blends are also discussed in light of new insights involving the nanoscopic scale. Finally, the authors detail the processing-morphology-property relationships of polymer blends, as well as the influence of processing on the generation of micro and nano morphologies, and the dependence of these morphologies on the properties of blends. Hot topics such as compatibilization through nanoparticles, miscibility of new biopolymers and nanoscale investigations of interfaces in blends are also addressed. With its application-oriented approach, handpicked selection of topics and expert contributors, this is an outstanding survey for anyone involved in the field of polymer blends for advanced technologies.

Neutron Scattering For The Analysis Of Biological Structures

Author : Benno P. Schoenborn
ISBN : UOM:39015000745383
Genre : Biochemistry
File Size : 24. 71 MB
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Physikalische Metallkunde

Author : P. Haasen
ISBN : 9783662127025
Genre : Science
File Size : 85. 4 MB
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Seit 1959 versuche ich in Göttingen, Studierende der Physik nach dem V 01' examen für ein Aufbaustudium der Physikalischen Metallkunde zu interessieren. Diese Aufgabe stellt sich heute an vielen Hochschulen, denn allgemein hat sich der Beruf des Metallkundlers in der Forschung, der Entwicklung metallischer Werkstoffe und ihrer industriellen Produktion als sehr befriedigend und aus sichtsreich erwiesen. Nicht nur ist die Metall-Technik außerordentlich vielseitig und lädt zu wissenschaftlicher Durchdringung ein, sondern auch andere Bereiche der Festkörper-verarbeitenden Industrie benutzen unter der Überschrift" Werk stoffwissenschaften" (Materials Science) zunehmend metallkundliche Methoden, etwa bei keramischen Werkstoffen, Halbleitermaterialien, Kunststoffen usw. Für ein solches Berufsbild ist heute ein Grundstudium der Physik sehr geeignet, während Metallkundler früherer Jahrgänge häufig als Chemiker oder Maschinen bau-Ingenieure begonnen haben. Das Grundstudium der Physik bietet neben strengem mathematischen Rüstzeug verschiedene Vorlesungen und Praktika der Experimentalphysik sowie den theoretisch-physikalischen Kursus incl. der Quantentheorie. Im 5. und 6. Semester leiten Einführungsvorlesungen über Festkörperphysik in das Gebiet der Physikalischen Metallkunde über. Sie lehnen sich auch in Deutschland häufig an das Lehrbuch von Ch. Kittel [1.1] an.

Biological Small Angle Scattering Techniques Strategies And Tips

Author : Barnali Chaudhuri
ISBN : 9789811060380
Genre : Science
File Size : 32. 2 MB
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This book provides a clear, comprehensible and up-to-date description of how Small Angle Scattering (SAS) can help structural biology researchers. SAS is an efficient technique that offers structural information on how biological macromolecules behave in solution. SAS provides distinct and complementary data for integrative structural biology approaches in combination with other widely used probes, such as X-ray crystallography, Nuclear magnetic resonance, Mass spectrometry and Cryo-electron Microscopy. The development of brilliant synchrotron small-angle X-ray scattering (SAXS) beam lines has increased the number of researchers interested in solution scattering. SAS is especially useful for studying conformational changes in proteins, highly flexible proteins, and intrinsically disordered proteins. Small-angle neutron scattering (SANS) with neutron contrast variation is ideally suited for studying multi-component assemblies as well as membrane proteins that are stabilized in surfactant micelles or vesicles. SAS is also used for studying dynamic processes of protein fibrillation in amyloid diseases, and pharmaceutical drug delivery. The combination with size-exclusion chromatography further increases the range of SAS applications. The book is written by leading experts in solution SAS methodologies. The principles and theoretical background of various SAS techniques are included, along with practical aspects that range from sample preparation to data presentation for publication. Topics covered include techniques for improving data quality and analysis, as well as different scientific applications of SAS. With abundant illustrations and practical tips, we hope the clear explanations of the principles and the reviews on the latest progresses will serve as a guide through all aspects of biological solution SAS. The scope of this book is particularly relevant for structural biology researchers who are new to SAS. Advanced users of the technique will find it helpful for exploring the diversity of solution SAS methods and applications. Chapter 3 of this book is available open access under a CC BY 4.0 license at link.springer.com.

Advances In Planar Lipid Bilayers And Liposomes

Author : Ales Iglic
ISBN : 0123812674
Genre : Science
File Size : 29. 66 MB
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Advances in Planar Lipid Bilayers and Liposomes, Volume 9, continues to include invited chapters on a broad range of topics, covering both main arrangements of the reconstituted system, namely planar lipid bilayers and spherical liposomes. The invited authors present the latest results in this exciting multidisciplinary field of their own research group. Many of the contributors working in both fields over many decades were in close collaboration with the late Prof. H. Ti Tien, the founding editor of this book series. There are also chapters written by some of the younger generation of scientists included in this series. This volume keeps in mind the broader goal with both systems, planar lipid bilayers and spherical liposomes, which is the further development of this interdisciplinary field worldwide. Incorporates contributions from newcomers and established and experienced researchers Explores the planar lipid bilayer systems and spherical liposomes from both theoretical and experimental perspectives Serves as an indispensable source of information for new scientists

Neutron Scattering In Earth Sciences

Author : Hans-Rudolf Wenk
ISBN : UCSD:31822035369404
Genre : Science
File Size : 74. 33 MB
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Volume 63 of Reviews in Mineralogy and Geochemistry provides an introduction for those not yet familiar with neutrons by describing basic features of neutrons and their interaction with matter as well illustrating important applications. The volume is divided into 17 Chapters. The first two chapters introduce properties of neutrons and neutron facilities, setting the stage for applications. Some applications rely on single crystals (Chapter 3) but mostly powders (Chapters 4-5) and bulk polycrystals (Chapters 15-16) are analyzed, at ambient conditions as well as low and high temperature and high pressure (Chapters 7-9). Characterization of magnetic structures remains a core application of neutron scattering (Chapter 6). The analysis of neutron data is not trivial and crystallographic methods have been modified to take account of the complexities, such as the Rietveld technique (Chapter 4) and the pair distribution function (Chapter 11). Information is not only obtained about solids but about liquids, melts and aqueous solutions as well (Chapters 11-13). In fact this field, approached with inelastic scattering (Chapter 10) and small angle scattering (Chapter 13) is opening unprecedented opportunities for earth sciences. Small angle scattering also contributes information about microstructures (Chapter 14). Neutron diffraction has become a favorite method to quantify residual stresses in deformed materials (Chapter 16) as well as preferred orientation patterns (Chapter 15). The volume concludes with a short introduction into neutron tomography and radiography that may well emerge as a principal application of neutron scattering in the future (Chapter 17).

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