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Neutron Scattering Investigations Of The Dynamics Of Thin Films Adsorbed On Solid Surfaces
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Book Synopsis Neutron Scattering Investigations of the Dynamics of Thin Films Adsorbed on Solid Surfaces by :
Download or read book Neutron Scattering Investigations of the Dynamics of Thin Films Adsorbed on Solid Surfaces written by and published by . This book was released on 1997 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: While not commonly thought of as surface sensitive probes, high-resolution inelastic and quasielastic neutron scattering (INS) techniques can be used to investigate the dynamical properties of films adsorbed on solid surfaces. These studies are possible because the adsorption takes place on samples which exhibit a large surface-to-volume ratio. By combining dynamical measurements with data from structural, thermodynamic and computer simulation studies it is then possible to develop a comprehensive picture of the microscopic properties of an adsorbed film system. In order to illustrate the power of employing INS techniques we will discuss the continuous melting of monolayer ethylene and the layer-by-layer melting of multilayer argon films on the basal plane of graphite and the rotational tunneling of methane films on the MgO(100) surface.
Book Synopsis Materials Research Using Cold Neutrons At Pulsed Neutron Sources by : Chun Keung Loong
Download or read book Materials Research Using Cold Neutrons At Pulsed Neutron Sources written by Chun Keung Loong and published by World Scientific. This book was released on 1999-04-29 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: The applications of the use of cold neutrons for condensed matter research at accelerator-based spallation sources are less well-known than that of the use of cold neutrons at reactor sources. This book represents the outcome of the first international workshop on “Materials Research Using Cold Neutrons at Pulsed Sources”. It consists of overviews of the present status and future trends in research opportunities using cold neutrons, as well as topical papers focusing on the areas of small-angle neutron scattering, reflectivity and spectroscopic studies of a rich variety of materials, from adsorbed molecules to thin films to coal to metallic glasses. These papers will benefit researchers who are interested in the characterization of microscopic properties of advanced materials.
Book Synopsis Dynamics of Solids and Liquids by Neutron Scattering by : S. W. Lovesey
Download or read book Dynamics of Solids and Liquids by Neutron Scattering written by S. W. Lovesey and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inelastic neutron scattering is a well established and important technique for studying the dynamical properties of condensed matter at the atomic level. Often, as is the case of experiments designed to study motions of hydrogen atoms, or magnetic excitations, it may yield information obtainable in no other way. Our aim in assembling this book is to produce an overview of some research topics which have come to the fore recently with the development of high neutron fluxes and high performance inelastic scattering spectrometers. The topics dis cussed here are, by and large, developing rapidly and have not reached the stage at which definitive accounts are always possible. Authors have not therefore attempted to make an extensive review of their topic, and the papers quoted in the text are, in general, those which are seen as having been important in its develop ment (they date, roughly, from the 1971 IAEA conference on neutron scattering held in Grenoble). Basic phenomena are illustrated for the most part by the discussion of one, or two, typical examples. The authors hope that the book will be useful to researchers who are not yet fully aware of the diverse range of problems to which the technique can be applied, and to students beginning research work. For this reason, the first chapter by S. w.
Book Synopsis Neutron Scattering – Fundamentals by : Jeffrey Penfold
Download or read book Neutron Scattering – Fundamentals written by Jeffrey Penfold and published by Elsevier Inc. Chapters. This book was released on 2013-11-22 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: Large-scale structures encompass a broad area of science involving soft matter, biomaterials, and nanotechnology, defined by relatively weak interactions and length scales that extend from nanometer to micrometer. The key features of such systems that require characterization and quantification are surfaces and interfaces, adsorption, thin films, and self-assembly and hierarchical structures in solution and the solid phase. The neutron scattering techniques of neutron reflectivity and small-angle neutron scattering have emerged over the past two decades as important probes of these characteristic features of large-scale structures. In this chapter, the fundamentals of the two techniques are described in detail and the important experimental aspects summarized. Their application over a broad range of science is presented, in a way that highlights their unique properties and their important contribution to the field.
Book Synopsis Neutron and X-ray Scattering Study of Intermediate-length Alkane Films Adsorbed on Solid Surfaces by : Haiding Mo
Download or read book Neutron and X-ray Scattering Study of Intermediate-length Alkane Films Adsorbed on Solid Surfaces written by Haiding Mo and published by . This book was released on 2004 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic thin films grown on solid surfaces are of great importance in applications such as microelectronics, biosensors, lubrication, and coatings. Using neutron diffraction and synchrotron x-ray scattering, we have conducted experiments to study the growth and structure of alkane films on solid surfaces. Our neutron diffraction study of a high-coverage monolayer of tetracosane (an alkane-chain molecule containing 24 carbon atoms) adsorbed on a graphite substrate shows that, near room temperature, the monolayer has a different structure than in a lower coverage monolayer investigated previously. Upon heating, it transforms from a crystalline to a liquid-crystal-like phase. For dotriacontane (an alkane chain molecule containing 32 carbon atoms, denoted C32) films adsorbed on silicon wafers, our x-ray specular reflectivity measurements show a unique structure in that the first one or two layers of molecules are oriented with their long axis parallel to the surface and are followed by a layer of molecules oriented with their long axis perpendicular to the substrate. As more molecules are added onto the substrate, bulk particles having two different structures nucleate on top of the film. For C32 grown on a single-crystal silver surface, x-ray diffraction shows that monolayer and multilayer films have a different crystal structure near room temperature. Specular x-ray reflectivity measurements demonstrate that multilayer films exhibit a layered structure even when they are fluid at high temperatures. At higher coverage, bulk particles nucleate with three different orientations. The structure and growth behavior of alkane films discovered in this research may help design better methods to grow organic crystals for microelectronics devices and to develop better lubricants.
Book Synopsis Applications of Physical Methods to Inorganic and Bioinorganic Chemistry by : Robert A. Scott
Download or read book Applications of Physical Methods to Inorganic and Bioinorganic Chemistry written by Robert A. Scott and published by John Wiley & Sons. This book was released on 2007-12-10 with total page 597 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern spectroscopic and instrumental techniques are essential to the practice of inorganic and bioinorganic chemistry. This first volume in the new Wiley Encyclopedia of Inorganic Chemistry Methods and Applications Series provides a consistent and comprehensive description of the practical applicability of a large number of techniques to modern problems in inorganic and bioinorganic chemistry. The outcome is a text that provides invaluable guidance and advice for inorganic and bioinorganic chemists to select appropriate techniques, whilst acting as a source to the understanding of these methods. This volume is also available as part of Encyclopedia of Inorganic Chemistry, 5 Volume Set. This set combines all volumes published as EIC Books from 2007 to 2010, representing areas of key developments in the field of inorganic chemistry published in the Encyclopedia of Inorganic Chemistry. Find out more.
Book Synopsis X-ray and Neutron Scattering from Surfaces and Thin Films by : M. Bienfait
Download or read book X-ray and Neutron Scattering from Surfaces and Thin Films written by M. Bienfait and published by . This book was released on 1989 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Communicated Abstracts written by and published by . This book was released on 1996 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Polymer Characterization by : Karel Dusˇek
Download or read book Polymer Characterization written by Karel Dusˇek and published by Springer Science & Business Media. This book was released on 2010-08-07 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: -Shear-Induced Transitions and Instabilities in Surfactant Wormlike Micelles By S. Lerouge, J.-F. Berret -Laser-Interferometric Creep Rate Spectroscopy of Polymers By V. A. Bershtein, P. N. Yakushev -Polymer Nanocomposites for Electro-Optics: Perspectives on Processing Technologies, Material Characterization, and Future Application K. Matras-Postolek, D. Bogdal
Book Synopsis Encyclopedia of Surface and Colloid Science by : P. Somasundaran
Download or read book Encyclopedia of Surface and Colloid Science written by P. Somasundaran and published by CRC Press. This book was released on 2006 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis X-ray and Neutron Scattering from Surfaces and Thin Films by : M. Bienfait
Download or read book X-ray and Neutron Scattering from Surfaces and Thin Films written by M. Bienfait and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis X-ray and neutron Scattering from surfaces and thin films by : M. Bienfait
Download or read book X-ray and neutron Scattering from surfaces and thin films written by M. Bienfait and published by . This book was released on 1989 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Publications of the National Institute of Standards and Technology ... Catalog by : National Institute of Standards and Technology (U.S.)
Download or read book Publications of the National Institute of Standards and Technology ... Catalog written by National Institute of Standards and Technology (U.S.) and published by . This book was released on 1991 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dynamics of Solids and Liquids by Neutron Scattering by : S. W Lovesey
Download or read book Dynamics of Solids and Liquids by Neutron Scattering written by S. W Lovesey and published by . This book was released on 1977-06-01 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Neutron Diffraction and Quasielastic Neutron Scattering Studies of Films of N-alkanes and a Branched Alkane Absorbed on Graphite by : Leah Criswell
Download or read book Neutron Diffraction and Quasielastic Neutron Scattering Studies of Films of N-alkanes and a Branched Alkane Absorbed on Graphite written by Leah Criswell and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Alkane molecules are important as constituents of lubricants, fuels, and polymers. Often these applications, such as lubrication, involve molecularly thin films of alkanes. We have studied the structures of n-tetracosane (n-C24D50) and squalane (C30H62) adsorbed on graphite below room temperature using neutron diffraction. We find that both the n-tetracosane and the squalane monolayers undergo a phase transition from a more-ordered crystalline phase to a less-ordered "smectic" phase on heating. Quasielastic neutron scattering studies of multiple layers of n-heptane (n-C--D16) above a crystalline n-dotriacontane (n-C32D66) monolayer adsorbed on graphite reveal that two dynamical layers can be distinguished. The first is composed of the first heptane layer which exhibits slower motions. The second is composed of the additional layers above this monolayer, which exhibit faster diffusion comparable to that of bulk. We also studied a monolayer of n-tetracosane adsorbed on graphite by quasielastic neutron scattering. We found that a slower diffusion motion became activated at 330 K, where molecular dynamics simulations indicate most molecular motions become too fast for observation. Instead, these simulations indicate that intramolecular and rotational diffusion of more globularly shaped n-tetracosane molecules, which contain many gauche defects, is being observed at this temperature.
Book Synopsis Fifty Years of Neutron Diffraction, The Advent of Neutron Scattering by : George Edward Bacon
Download or read book Fifty Years of Neutron Diffraction, The Advent of Neutron Scattering written by George Edward Bacon and published by CRC Press. This book was released on 1987 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims to trace the history of neutron scattering from its pioneer days, to give an outline of the achievements in its main fields of application - notably magnetism, chemistry, lattice dynamics and biology - and some account of its present status. Articles are contributed by pioneers who have worked in the subject for more than 40 years. With stories and reminiscences of the early days in fifteen different countries, the book captures something of the flavour and opportunities of neutron scattering and shows the changes in the way of life of neutron experimenters over the past fifty years.
