Download or read book The Hydrated Electron written by Edwin James Hart and published by John Wiley & Sons. This book was released on 1970 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structures and Dynamics of Interfacial Water written by Fujie Tang and published by Springer. This book was released on 2020-08-14 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the study of the interfacial water using molecular dynamics simulation and experimental sum frequency generation spectroscopy. It proposes a new definition of the free O-H groups at water-air interface and presents research on the structure and dynamics of these groups. Furthermore, it discusses the exponential decay nature of the orientation distribution of the free O-H groups of interfacial water and ascribes the origin of the down pointing free O-H groups to the presence of capillary waves on the surface. It also describes how, based on this new definition, a maximum surface H-bond density of around 200 K at ice surface was found, as the maximum results from two competing effects. Lastly, the book discusses the absorption of water molecules at the water–TiO2 interface. Providing insights into the combination of molecular dynamics simulation and experimental sum frequency generation spectroscopy, it is a valuable resource for researchers in the field.
Download or read book The Structure of the Hydrated Electron in Bulk and at Interfaces written by Jennifer Ryan Casey and published by . This book was released on 2014 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since its discovery over fifty years ago, the hydrated electron has been the subject of much interest. Hydrated electrons, which are free electrons in water, are found in fields ranging from biochemistry to radiation chemistry, so it is important that we understand the structure and dynamics of this species. Because of its high reactivity, the hydrated electron's structure has proven difficult to pin down, especially its molecular details. One-electron mixed quantum/classical molecular dynamics simulations have proven useful in helping elucidate the structure of the hydrated electron. The picture most commonly presented from these studies is one of the electron residing in a cavity, disrupting the local water structure much like an anion the size of bromide. Our group has recently proposed a completely different structure for the hydrated electron, which arose from rigorous calculations of a new electron-water potential. The picture that emerged was of an electron that does not occupy a cavity but instead draws water within itself; this non-cavity electron resides in a region of enhanced water density. The one-electron cavity and non-cavity models all predict similar experimental observables that probe the electronic structure of the hydrated electron, such as the optical absorption spectrum, which makes it difficult to determine which model most accurately describes the true structure of the hydrated electron. In this thesis, we work to calculate experimental observables for various simulated cavity and non-cavity models that are particularly sensitive to the local water structure near the electron, in an effort to distinguish the various models from each other. Two particular observables we are interested in are the resonance Raman spectrum and the temperature dependent optical absorption spectrum of the hydrated electron. We find that for both of these experiments, only the non-cavity model has qualitative agreement with experiment; the cavity models miss the experimental temperature dependence in the optical absorption spectrum and show the wrong trends in the resonance Raman spectrum. We also explore the differences between non-cavity and cavity models by quantifying the electron-water overlap, referring to the non-cavity model as an `inverse plum pudding, ' where the water molecules are embedded within the electron density. Finally, we examine hydrated electrons in the presence of an air/water interface. Experiments indicate that most likely electrons do not reside at the surface, and if they do, they have structural and dynamical properties reminiscent of the bulk. Our calculated Potentials of Mean Force indicate that both cavity and non-cavity electrons prefer to be solvated by the bulk, but that the cavity electron has a local free energy minimum near the surface. These calculated interfacial cavity electrons behave very differently than cavity electrons in the bulk, in direct contrast to experimental evidence. From the work presented in this thesis, it is clear that the non-cavity electron is the most appropriate one-electron model we have for the structure of the hydrated electron.
Download or read book Liquid Cell Electron Microscopy written by Frances M. Ross and published by Cambridge University Press. This book was released on 2017 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: 2.6.2 Electrodes for Electrochemistry
Download or read book Radiation Chemistry written by Mehran Mostafavi and published by L'Editeur : EDP Sciences. This book was released on 2008 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The hydrated electron written by and published by . This book was released on 1966 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Radiation Chemistry of Water written by Ivan Draganic and published by Elsevier. This book was released on 2012-12-02 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Radiation Chemistry of Water tackles radiation-induced changes in water and explains the behavior of irradiated water, with some changes in aqueous solutions. This book deals primarily with short-lived species like the hydroxyl radical, hydrated electron, and hydrogen atom, which cause the chemical changes in irradiated water and aqueous solutions. These species and their origin, properties, and dependence of their yields on various factors are discussed in several chapters. Other topics also covered are the diffusion-kinetic model of water radiolysis and some general cases, radiation sources, and dosimetry. This book is most useful to students in the fields of radiation chemistry, physical chemistry, radiobiology, and nuclear technology.
Download or read book Atomic Scale Modelling of Electrochemical Systems written by Marko M. Melander and published by John Wiley & Sons. This book was released on 2021-09-09 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atomic-Scale Modelling of Electrochemical Systems A comprehensive overview of atomistic computational electrochemistry, discussing methods, implementation, and state-of-the-art applications in the field The first book to review state-of-the-art computational and theoretical methods for modelling, understanding, and predicting the properties of electrochemical interfaces. This book presents a detailed description of the current methods, their background, limitations, and use for addressing the electrochemical interface and reactions. It also highlights several applications in electrocatalysis and electrochemistry. Atomic-Scale Modelling of Electrochemical Systems discusses different ways of including the electrode potential in the computational setup and fixed potential calculations within the framework of grand canonical density functional theory. It examines classical and quantum mechanical models for the solid-liquid interface and formation of an electrochemical double-layer using molecular dynamics and/or continuum descriptions. A thermodynamic description of the interface and reactions taking place at the interface as a function of the electrode potential is provided, as are novel ways to describe rates of heterogeneous electron transfer, proton-coupled electron transfer, and other electrocatalytic reactions. The book also covers multiscale modelling, where atomic level information is used for predicting experimental observables to enable direct comparison with experiments, to rationalize experimental results, and to predict the following electrochemical performance. Uniquely explains how to understand, predict, and optimize the properties and reactivity of electrochemical interfaces starting from the atomic scale Uses an engaging “tutorial style” presentation, highlighting a solid physicochemical background, computational implementation, and applications for different methods, including merits and limitations Bridges the gap between experimental electrochemistry and computational atomistic modelling Written by a team of experts within the field of computational electrochemistry and the wider computational condensed matter community, this book serves as an introduction to the subject for readers entering the field of atom-level electrochemical modeling, while also serving as an invaluable reference for advanced practitioners already working in the field.
Download or read book Water in Biological and Chemical Processes written by Biman Bagchi and published by Cambridge University Press. This book was released on 2013-11-14 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: A unified overview of the dynamical properties of water and its unique and diverse role in biological and chemical processes.
Download or read book Fundamentals of Radiation Chemistry written by A. Mozumder and published by Elsevier. This book was released on 1999-08-16 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the physical and chemical effects of radiation interaction with matter. Beginning with the physical basis for the absorption of charged particle radiations, Fundamentals of Radiation Chemistry provides a systematic account of the formation of products, including the nature and properties of intermediate species. Developed from first principles, the coverage of fundamentals and applications will appeal to an interdisciplinary audience of radiation physicists and radiation biologists. Only an undergraduate background in chemistry and physics is assumed as a prerequisite for the understanding of applications in research and industry. Provides a working knowledge of radiation effects for students and non-experts Stresses the role of the electron both as a radiation and as a reactant species Contains clear diagrams of track models Includes a chapter on applications Written by an expert with more than thirty years of experience in a premiere research laboratory Culled from the author's painstaking research of journals and other publications over several decades
Download or read book The Hydrated Electron by Edwin J Hart and Michael Anbar written by Edwin James Hart and published by . This book was released on 1970 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Introduction to the Biophysics of Activated Water written by Igor Smirnov and published by Universal-Publishers. This book was released on 2005 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book to reveal the mechanism of 'long-term water memory' effects. The theory is based on precise mathematical calculations and a fundamental physical model of clathrate hydrates developed by Pauling in 1959. This book gives a detailed review of modern theories dealing with structure and properties of water. It also provides theory regarding the effect of activated water on biological systems under the life suppressive conditions such as ionizing and non-ionizing radiation. In addition, it provides detail information regarding the mechanism of DNA self-reparation process under the influence of activated water. Also included is a chapter on the innovative patented technology based on mechanism of 'long-term water memory' to prove the feasilibity with experimental data and protocols.
Download or read book The Hydrated Electron written by Claudio Romero and published by . This book was released on 1987 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Perspectives on Hydrated Electrons written by Katrin Siefermann and published by Sudwestdeutscher Verlag Fur Hochschulschriften AG. This book was released on 2010-12 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the discovery of the hydrated electron in 1962, scientists have speculated over its vertical binding energy (VBE). In this book, the author describes the sophisticated experiments which finally made this quantity accessible and additionally revealed fascinating information about electrons bound at the liquid water surface. These results are crucial for understanding many electron transfer and attachment processes, ranging from radiation induced DNA damage to atmospheric chemistry. This book examines solvated electrons in liquid water and at liquid water interfaces, explaining their binding energies, lifetimes and the implications of these physical properties.
Download or read book The Hydrated Electron and Its Reactions at High Temperatures written by Hilbert Christensen and published by . This book was released on 1986 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cellular Electron Microscopy written by J. Richard McIntosh and published by Elsevier. This book was released on 2011-09-02 with total page 878 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in the imaging technique electron microscopy (EM) have improved the method, making it more reliable and rewarding, particularly in its description of three-dimensional detail. Cellular Electron Microscopy will help biologists from many disciplines understand modern EM and the value it might bring to their own work. The book’s five sections deal with all major issues in EM of cells: specimen preparation, imaging in 3-D, imaging and understanding frozen-hydrated samples, labeling macromolecules, and analyzing EM data. Each chapter was written by scientists who are among the best in their field, and some chapters provide multiple points of view on the issues they discuss. Each section of the book is preceded by an introduction, which should help newcomers understand the subject. The book shows why many biologists believe that modern EM will forge the link between light microscopy of live cells and atomic resolution studies of isolated macromolecules, helping us toward the goal of an atomic resolution understanding of living systems. Updates the numerous technological innovations that have improved the capabilities of electron microscopy Provides timely coverage of the subject given the significant rise in the number of biologists using light microscopy to answer their questions and the natural limitations of this kind of imaging Chapters include a balance of "how to", "so what" and "where next", providing the reader with both practical information, which is necessary to use these methods, and a sense of where the field is going
Download or read book Electron Tomography written by Joachim Frank and published by Springer Science & Business Media. This book was released on 2008-03-05 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: This definitive work provides a comprehensive treatment of the mathematical background and working methods of three-dimensional reconstruction from tilt series. Special emphasis is placed on the problems presented by limitations of data collection in the transmission electron microscope. The book, extensively revised and updated, takes the reader from biological specimen preparation to three-dimensional images of the cell and its components.
