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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 14
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Book Description
Progress is reviewed in our understanding of the effects of high electrostatic fields (of the order of volts per angstrom) on the adsorption and reaction of atoms and molecules on metal and semiconductor surfaces. Chemical Reactions, Electric Fields, Nanoscale Structures.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 14
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Book Description
Progress is reviewed in our understanding of the effects of high electrostatic fields (of the order of volts per angstrom) on the adsorption and reaction of atoms and molecules on metal and semiconductor surfaces. Chemical Reactions, Electric Fields, Nanoscale Structures.
Author: Israel D. Vagner
Publisher: Springer Science & Business Media
ISBN: 9781402013737
Category : Medical
Languages : en
Pages : 360
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Book Description
Proceedings of the NATO Advanced Research Workshop, Les Houches, France, February 25-March 1, 2002
Author: Michael C. Kelley
Publisher: Newnes
ISBN: 0123978831
Category : Science
Languages : en
Pages : 230
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Book Description
The Earth’s Electric Field provides you with an integrated and comprehensive picture of the generation of the terrestrial electric fields, their dynamics and how they couple/propagate through the medium. The Earth’s Electric Field provides basic principles of terrestrial electric field related topics, but also a critical summary of electric field related observations and their significance to the various related phenomena in the atmosphere. For the first time, Kelley brings together information on this topic in a coherent way, making it easy to gain a broad overview of the critical processes in an efficient way. If you conduct research in atmospheric science, physics, atmospheric chemistry, space plasma physics, and solar terrestrial physics, you will find this book to be essential reading. The only book on the physics of terrestrial electric fields and their generation mechanisms, propagation and dynamics–making it essential reading for scientists conducting research in upper atmospheric, ionospheric, magnetospheric and space weather Covers the processes related to electric field generation and electric field coupling in the upper atmosphere along with providing new insights about electric fields generated by sources from sun to mud Focuses on real-world implications—covering topics such as space weather, earthquakes, the effect on power grids, and the effect on GPS and communication devices
Author: Markus Karahka
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
This thesis is a theoretical study on the effects of high electrostatic fields, fields of the order of Volts per Angstrøm, on the structure and stability of water, MgO, ZnO, and Si nanoclusters. A high electrostatic field applied across a material will raise the energy levels of a molecular orbital relative to another molecular orbital in the field direction. This rearrangement of the bonding and antibonding orbitals or field-induced chemistry can cause: (i) the electronic transformation of one material into another creating a continuous periodic table, (ii) the formation of new structures which are stable in the field, and (iii) field-induced dissociation or field evaporation. We perform detailed quantum mechanical calculations using density functional theory to explain experimental observations and explore the above effects. To understand Atom Probe results on the field evaporation of semiconductors we calculate the effects of high electrostatic fields on MgO, ZnO, and Si clusters to follow the structural changes during field evaporation and to obtain potential energy curves, partial charges and desorption pathways. We obtain field evaporation products seen in experiment, address the question of what happens to the oxygen during field evaporation of the oxide, and explain why the O goes missing. It can migrate down the (metallic) surface of the tip and eventually desorb either as atoms or molecules (neutral). Evidence of field-induced metallization of the semiconductors is seen through closure of the HOMO-LUMO gaps, increases in dielectric constant and polarizability, and field expulsion inside the clusters. Strong band gap shrinkage of a dielectric nanostructure in a field was experimentally confirmed. Finally, it has been observed in field ion microscopy experiments that long whiskers of up to 12 water molecules can form. We present whisker structures and energetics, lower and upper threshold fields, and fragmentation patterns. Our results are in general agreement with experiments including the fact that predominantly small protonated clusters break off. We also look at the quantum mechanics of charge transport along proton wires both with free ends and donor/acceptor terminated. The charge transfer times and the conductivity of the proton wire were calculated in agreement with experimental results.
Author: Carl A. Rouse
Publisher: Elsevier
ISBN: 1483187063
Category : Science
Languages : en
Pages : 227
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Book Description
Progress in High Temperature Physics and Chemistry
Author: Fritz Herlach
Publisher: World Scientific
ISBN: 9812774882
Category : Science
Languages : en
Pages : 321
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Book Description
This three-volume book provides a comprehensive review of experiments in very strong magnetic fields that can only be generated with very special magnets. The first volume is entirely devoted to the technology of laboratory magnets: permanent, superconducting, high-power water-cooled and hybrid; pulsed magnets, both nondestructive and destructive (megagauss fields). Volumes 2 and 3 contain reviews of the different areas of research where strong magnetic fields are an essential research tool. These volumes deal primarily with solid-state physics; other research areas covered are biological systems, chemistry, atomic and molecular physics, nuclear resonance, plasma physics and astrophysics (including QED).
Author: George Maroulis
Publisher: Imperial College Press
ISBN: 1860948863
Category : Technology & Engineering
Languages : en
Pages : 694
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Book Description
With the central importance of electric polarizability and hyperpolarizability for a wide spectrum of activities, this book charts the trends in the accurate theoretical determination of these properties in specialized fields. The contributions include reviews and original papers that extend from methodology to applications in specific areas of primary importance such as cluster science and organic synthesis of molecules with specific properties.
Author: Ralf Vanselow
Publisher: Springer Science & Business Media
ISBN: 3642757626
Category : Technology & Engineering
Languages : en
Pages : 471
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Book Description
This volume contains review articles written by the invited speakers at the ninth International Summer Institute in Surface Science (ISISS 1989), held at the Uni versity of Wisconsin-Milwaukee in August of 1989. During the course of ISISS, invited speakers, all internationally recognized experts in the various fields of surface science, present tutorial review lectures. In addition, these experts are asked to write review articles on their lecture topic. Former ISISS speakers serve as advisors concerning the selection of speakers and lecture topics. Emphasis is given to those areas which have not been covered in depth by recent Summer Institutes, as well as to areas which have recently gained in significance and in which important progress has been made. Because of space limitations, no individual volume of Chemistry and Physics of Solid Surfaces can possibly cover the whole area of modern surface science, or even give a complete survey of recent progress in this field. However, an attempt is made to present a balanced overview in the series as a whole. With its comprehensive literature references and extensive subject indices, this series has become a valuable resource for experts and students alike. The collected articles, which stress particularly the gas-solid interface, have been published under the following titles: Surface Science: Recent Progress and Perspectives, Crit. Rev. Solid State Sci.
Author: C. Schlenker
Publisher: Springer Science & Business Media
ISBN: 1461311497
Category : Science
Languages : en
Pages : 477
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Book Description
The field of low-dimensional conductors has been very active for more than twenty years. It has grown continuously and both the inorganic and organic materials have remark able properties, such as charge and spin density waves and superconductivity. The discovery of superconductivity at high temperature in copper-based quasi two-dimensional conducting oxides nearly ten years ago has further enlarged the field and stimulated new research on inorganic conductors. It was obviously impossible to cover such a broad field in a ten day Institute and it seemed pertinent to concentrate on inorganic conductors, excluding the high Tc superconducting oxides. In this context, it was highly desirable to include both physics and chemistry in the same Institute in order to tighten or in some cases to establish links between physicists and chemists. This Advanced Study Institute is the continuation of a series of similar ones which have taken place every few years since 1974. 73 participants coming from 13 countries have taken part in this School at the beautiful site of the Centre de Physique des Houches in the Mont-Blanc mountain range. The scientific programme included more than forty lectures and seminars, two poster sessions and ten short talks. Several discussion sessions were organized for the evenings, one on New Materials, one on New Topics and one on the special problem of the Fermi and Luttinger liquids. The scientific activity was kept high from the beginning to the end of the Institute.
Author: Gorur G. Raju
Publisher: CRC Press
ISBN: 9780824708641
Category : Technology & Engineering
Languages : en
Pages : 592
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Book Description
Discover nontraditional applications of dielectric studies in this exceptionally crafted field reference or text for seniors and graduate students in power engineering tracks. This text contains more than 800 display equations and discusses polarization phenomena in dielectrics, the complex dielectric constant in an alternating electric field, dielectric relaxation and interfacial polarization, the measurement of absorption and desorption currents in time domains, and high field conduction phenomena. Dielectrics in Electric Fields is an interdisciplinary reference and text for professionals and students in electrical and electronics, chemical, biochemical, and environmental engineering; physical, surface, and colloid chemistry; materials science; and chemical physics.
