Tunnelling in Molecules
Author: Johannes Kästner
Publisher: Royal Society of Chemistry
Published: 2020-09-30
Total Pages: 453
ISBN-13: 1788018702
DOWNLOAD EBOOKNuclear Quantum Effects from Bio to Physical Chemistry
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Author: Johannes Kästner
Publisher: Royal Society of Chemistry
Published: 2020-09-30
Total Pages: 453
ISBN-13: 1788018702
DOWNLOAD EBOOKNuclear Quantum Effects from Bio to Physical Chemistry
Author: Johannes Kästner
Publisher: Royal Society of Chemistry
Published: 2020-09-22
Total Pages: 453
ISBN-13: 1839160381
DOWNLOAD EBOOKQuantum tunnelling is one of the strangest phenomena in chemistry, where we see the wave nature of atoms acting in “impossible” ways. By letting molecules pass through the kinetic barrier instead of over it, this effect can lead to chemical reactions even close to the absolute zero, to atypical spectroscopic observations, to bizarre selectivity, or to colossal isotopic effects. Quantum mechanical tunnelling observations might be infrequent in chemistry, but it permeates through all its disciplines producing remarkable chemical outcomes. For that reason, the 21st century has seen a great increase in theoretical and experimental findings involving molecular tunnelling effects, as well as in novel techniques that permit their accurate predictions and analysis. Including experimental, computational and theoretical chapters, from the physical and organic to the biochemistry fields, from the applied to the academic arenas, this new book provides a broad and conceptual perspective on tunnelling reactions and how to study them. Quantum Tunnelling in Molecules is the obligatory stop for both the specialist and those new to this world.
Author: Hiroki Nakamura
Publisher: CRC Press
Published: 2016-04-19
Total Pages: 225
ISBN-13: 1466507322
DOWNLOAD EBOOKQuantum mechanical tunneling plays important roles in a wide range of natural sciences, from nuclear and solid-state physics to proton transfer and chemical reactions in chemistry and biology. Responding to the need for further understanding of multidimensional tunneling, the authors have recently developed practical methods that can be applied to
Author: Tetsuo Miyazaki
Publisher: Springer Science & Business Media
Published: 2004-01-13
Total Pages: 332
ISBN-13: 9783540015260
DOWNLOAD EBOOKAtom tunneling phenomena are a new paradigm in the science of materials. This book provides a wealth of interesting information about atom tunneling phenomena in physics, chemistry and biology. Topics include the theory of atom tunneling reactions, conclusive evidence and controlling factors for such reactions in solid hydrogen, tunneling dislocation motion, coherent tunneling diffusion, the production of interstellar molecules and semiconductors using tunneling reactions, the effect of atom tunneling on molecular structure and crystalline structure, the suppression of mutation and cancer by an atom tunneling reaction of vitamin C, and atom tunneling reactions of vitamin E and of enzymes. This book provides graduate students and nonspecialist readers with fascinating insights into the world of atom tunneling phenomena.
Author: E. L. Wolf
Publisher: Oxford University Press
Published: 2012
Total Pages: 617
ISBN-13: 0199589496
DOWNLOAD EBOOKElectron tunnelling spectroscopy as a research tool has strongly advanced understanding of superconductivity. This book explains the physics and instrumentation behind the advances illustrated in beautiful images of atoms, rings of atoms and exotic states in high temperature superconductors, and summarizes the state of knowledge that has resulted.
Author: Ronald Percy Bell
Publisher: Springer
Published: 2013-11-11
Total Pages: 231
ISBN-13: 148992891X
DOWNLOAD EBOOKThe suggestion that quantum-mechanical tunnelling might be a significant factor in some chemical reactions was first made fifty years ago by Hund, very soon after the principles of wave mechanics had been established by de Broglie, Schrodinger and Heisenberg, and similar ideas were put forward during the following thirty years by a number of authors. It was realised from the beginning that such effects would be particularly prominent in reactions involving the movement of protons or hydrogen atoms, and both theoretical and experimental work received a powerful stimulus in the discovery of deuterium in 1932. During the last twenty years theoretical predictions about the tunnel effect have been supported by an increasing body of experimental evidence, derived especially from studies of hydrogen isotope effects. The present book presents an attempt to summarize this evidence and to indicate the main lines of the basic theory. Details of mathematical manipu lation are restricted mainly to Chapter 2 and the Appendices, and many readers may prefer to confine themselves to the results obtained. The main emphasis has been on the kinetics of chemical reactions involving the transfer of protons, hydrogen atoms or hydride ions, although Chapter 6 gives an account of the role of the tunnel effect in molecular spectra, and Chapter 7 makes some mention of tunnelling in solid state phenomena, biological processes and the electrolytic discharge of hydrogen. Only passing references have been made to tunnelling by electrons.
Author: V.I. Gol'danskii
Publisher: Routledge
Published: 2021-10-15
Total Pages: 334
ISBN-13: 1351406701
DOWNLOAD EBOOKSurveys the contemporary concepts and theoretical and experimental results of tunneling processes. Examines from a unified viewpoint not only chemical reactions but also other physical physicochemical and biological phenomena in which the tunneling effect is of great importance. Covers the general ideas of tunneling, the low temperature chemical reactions that manifest tunneling mechanisms, tunneling effects in amorphous materials, quantum diffusion and surface phenomena in quantum crystals, hopping diffusion and tunneling scavenging of electrons, and tunneling effects in biological systems.
Author: Shu Fen Tan
Publisher: Springer
Published: 2018-07-21
Total Pages: 142
ISBN-13: 9811088039
DOWNLOAD EBOOKThis thesis describes the controlled immobilization of molecules between two cuboidal metal nanoparticles by means of a self-assembly method to control the quantum plasmon resonances. It demonstrates that quantum-plasmonics is possible at length scales that are useful for real applications. Light can interact with certain metals and can be captured in the form of plasmons, which are collective, ultra-fast oscillations of electrons that can be manipulated at the nano-scale. Surface plasmons are considered as a promising phenomenon for potentially bridging the gap between fast-operating-speed optics and nano-scale electronics. Quantum tunneling has been predicted to occur across two closely separated plasmonic resonators at length scales (0.3 nm) that are not accessible using present-day nanofabrication techniques. Unlike top-down nanofabrication, the molecules between the closely-spaced metal nanoparticles could control the gap sizes down to sub-nanometer scales and act as the frequency controllers in the terahertz regime, providing a new control parameter in the fabrication of electrical circuits facilitated by quantum plasmon tunneling.
Author: Zhang, Lei
Publisher: KIT Scientific Publishing
Published: 2019-07-05
Total Pages: 116
ISBN-13: 386644950X
DOWNLOAD EBOOKAuthor: F. Fillaux
Publisher:
Published: 1996
Total Pages:
ISBN-13:
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