Structural Dynamics by Ultrafast Electron Crystallography PDF Download
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Author: Songye Chen
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 260
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Book Description
Author: Songye Chen
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 260
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Book Description
Author: Kiyoshi Ueda
Publisher: Springer Nature
ISBN: 9819729149
Category :
Languages : en
Pages : 484
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Book Description
Author: Ramesh Srinivasan
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 706
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Book Description
Author: Ramani K. Raman
Publisher:
ISBN:
Category : Crystallography
Languages : en
Pages : 472
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Book Description
Author: Jonathan Stuart Feenstra
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 624
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Book Description
Author: Lai Chung Liu
Publisher: Springer Nature
ISBN: 3030548511
Category : Science
Languages : en
Pages : 249
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Book Description
The thesis provides the necessary experimental and analytical tools to unambiguously observe the atomically resolved chemical reactions. A great challenge of modern science has been to directly observe atomic motions during structural transitions, and while this was first achieved through a major advance in electron source brightness, the information content was still limited and new methods for image reconstruction using femtosecond electron diffraction methods were needed. One particular challenge lay in reconciling the innumerable possible nuclear configurations with the observation of chemical reaction mechanisms that reproducibly give the same kind of chemistry for large classes of molecules. The author shows that there is a simple solution that occurs during barrier crossing in which the highly anharmonic potential at that point in nuclear rearrangements couples high- and low-frequency vibrational modes to give highly localized nuclear motions, reducing hundreds of potential degrees of freedom to just a few key modes. Specific examples are given in this thesis, including two photoinduced phase transitions in an organic system, a ring closure reaction, and two direct observations of nuclear reorganization driven by spin transitions. The emerging field of structural dynamics promises to change the way we think about the physics of chemistry and this thesis provides tools to make it happen.
Author: Kasra Amini
Publisher: Royal Society of Chemistry
ISBN: 1837671141
Category : Science
Languages : en
Pages : 671
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Book Description
Author: Max Gulde
Publisher: Springer
ISBN: 3319185616
Category : Science
Languages : en
Pages : 149
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Book Description
This book presents an Ultrafast Low-Energy Electron Diffraction (ULEED) system that reveals ultrafast structural changes on the atomic scale. The achievable temporal resolution in the low-energy regime is improved by several orders of magnitude and has enabled the melting of a highly-sensitive, molecularly thin layer of a polymer crystal to be resolved for the first time. This new experimental approach permits time-resolved structural investigations of systems that were previously partially or totally inaccessible, including surfaces, interfaces and atomically thin films. It will be of fundamental importance for understanding the properties of nanomaterials so as to tailor their properties.
Author: Lutz Waldecker
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Masashi Arita
Publisher: BoD – Books on Demand
ISBN: 1838818820
Category : Science
Languages : en
Pages : 102
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Book Description
TEM and SEM have contributed greatly to the progress of various research fields, which has been accelerated in the last few decades by highly functional electron microscopes and microscopy. In this tide of microscopy, various microscopic methods have been developed to make clear many unsolved problems, e.g. pulse beam TEM, environmental microscopy, correlative microscopy, etc. In this book, a number of reviews have been collected concerning these subjects. We think that the content in each chapter is impressive, and we hope this book will contribute to future advances in electron microscopy, materials science, and biomedicine.
