Download or read book The Surface Chemistry of Aromatic Molecules on the Silicon 111 7x7 Surface written by Yong Cao and published by . This book was released on 2000 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Functionalization of Semiconductor Surfaces written by Franklin Tao and published by John Wiley & Sons. This book was released on 2012-03-16 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents both fundamental knowledge and latest achievements of this rapidly growing field in the last decade. It presents a complete and concise picture of the the state-of-the-art in the field, encompassing the most active international research groups in the world. Led by contributions from leading global research groups, the book discusses the functionalization of semiconductor surface. Dry organic reactions in vacuum and wet organic chemistry in solution are two major categories of strategies for functionalization that will be described. The growth of multilayer-molecular architectures on the formed organic monolayers will be documented. The immobilization of biomolecules such as DNA on organic layers chemically attached to semiconductor surfaces will be introduced. The patterning of complex structures of organic layers and metallic nanoclusters toward sensing techniques will be presented as well.
Download or read book Surface Chemistry of Silicon The Behavior of Dangling Bonds written by J. T Yates (Jr) and published by . This book was released on 1991 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The role of surface dangling bonds in controlling the surface chemistry of Si(100) and Si(111) has been investigated using surface science methods. The adsorption and decomposition of acetylene on Si(100) has been shown to occur by means of mobile precursor mechanism, leading to a di-sigma chemisorbed ethylenic species occupying Si dimer sites on Si(100). This species decomposes at elevated temperatures to produce adsorbed carbon and hydrogen (800 K) and then silicon carbide (1000 K). The activity of Si(111) for the adsorption of species such as ammonia and atomic hydrogen can be significantly reduced by doping of the surface region with boron. It has been shown that subsurface boron significantly changes the structure of Si(111)-(7x7) to a (sq rt 3 x sq rt 3) R 30 deg structure. In addition, the local doping of the surface reduces the chemical activity of the dangling bonds so that neither the dissociation of NH3 nor the adsorption of atomic hydrogen will occur.
Download or read book Encyclopedia of Interfacial Chemistry written by and published by Elsevier. This book was released on 2018-03-29 with total page 5276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Encyclopedia of Interfacial Chemistry: Surface Science and Electrochemistry, Seven Volume Set summarizes current, fundamental knowledge of interfacial chemistry, bringing readers the latest developments in the field. As the chemical and physical properties and processes at solid and liquid interfaces are the scientific basis of so many technologies which enhance our lives and create new opportunities, its important to highlight how these technologies enable the design and optimization of functional materials for heterogeneous and electro-catalysts in food production, pollution control, energy conversion and storage, medical applications requiring biocompatibility, drug delivery, and more. This book provides an interdisciplinary view that lies at the intersection of these fields. Presents fundamental knowledge of interfacial chemistry, surface science and electrochemistry and provides cutting-edge research from academics and practitioners across various fields and global regions
Download or read book High Performance Computing in Science and Engineering 21 written by Wolfgang E. Nagel and published by Springer Nature. This book was released on 2023-03-03 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the state-of-the-art in supercomputer simulation. It includes the latest findings from leading researchers using systems from the High Performance Computing Center Stuttgart (HLRS) in 2021. The reports cover all fields of computational science and engineering ranging from CFD to computational physics and from chemistry to computer science with a special emphasis on industrially relevant applications. Presenting findings of one of Europe’s leading systems, this volume covers a wide variety of applications that deliver a high level of sustained performance. The book covers the main methods in high-performance computing. Its outstanding results in achieving the best performance for production codes are of particular interest for both scientists and engineers. The book comes with a wealth of color illustrations and tables of results.
Download or read book Physics Briefs written by and published by . This book was released on 1992 with total page 1358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Surface Chemistry of Silicon written by and published by . This book was released on 1994 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: The chemistry of silicon single crystal surfaces is reviewed along with the surface reconstruction processes which occur on clean silicon single crystal surfaces. Examples of surface reactivity with elements and compounds from each group of the periodic table are included. In addition, a table of current references to adsorption systems involving over 1000 recent papers is included, and this information is arranged for easy access.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1990 with total page 1036 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Final Program and Abstracts written by Materials Research Society. Fall Meeting and published by . This book was released on 1984 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Bonding at Surfaces and Interfaces written by Anders Nilsson and published by Elsevier. This book was released on 2011-08-11 with total page 533 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molecular surface science has made enormous progress in the past 30 years. The development can be characterized by a revolution in fundamental knowledge obtained from simple model systems and by an explosion in the number of experimental techniques. The last 10 years has seen an equally rapid development of quantum mechanical modeling of surface processes using Density Functional Theory (DFT). Chemical Bonding at Surfaces and Interfaces focuses on phenomena and concepts rather than on experimental or theoretical techniques. The aim is to provide the common basis for describing the interaction of atoms and molecules with surfaces and this to be used very broadly in science and technology. The book begins with an overview of structural information on surface adsorbates and discusses the structure of a number of important chemisorption systems. Chapter 2 describes in detail the chemical bond between atoms or molecules and a metal surface in the observed surface structures. A detailed description of experimental information on the dynamics of bond-formation and bond-breaking at surfaces make up Chapter 3. Followed by an in-depth analysis of aspects of heterogeneous catalysis based on the d-band model. In Chapter 5 adsorption and chemistry on the enormously important Si and Ge semiconductor surfaces are covered. In the remaining two Chapters the book moves on from solid-gas interfaces and looks at solid-liquid interface processes. In the final chapter an overview is given of the environmentally important chemical processes occurring on mineral and oxide surfaces in contact with water and electrolytes. Gives examples of how modern theoretical DFT techniques can be used to design heterogeneous catalysts This book suits the rapid introduction of methods and concepts from surface science into a broad range of scientific disciplines where the interaction between a solid and the surrounding gas or liquid phase is an essential component Shows how insight into chemical bonding at surfaces can be applied to a range of scientific problems in heterogeneous catalysis, electrochemistry, environmental science and semiconductor processing Provides both the fundamental perspective and an overview of chemical bonding in terms of structure, electronic structure and dynamics of bond rearrangements at surfaces
Download or read book Extending Moore s Law Through Molecular Electronics and High k Gate Oxides written by Conan Weiland and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Molecular electronics offer the promise of continued scaling of devices to smaller dimensions. To integrate molecular devices into conventional electronics, the molecules must be bound to a substrate. While much work has been done toward the understanding of conduction and switching mechanisms in single molecules, the interface between molecule and substrate is much less understood. This work focuses on the interface of small aromatic molecules on Si (111)-7x7 surfaces. Most molecular electronics systems are based on organic molecules with large pi-conjugated systems. This work focuses on three smaller molecules with similar structures: phenylacetylene, styrene and biphenyl-bisacetylene. X-ray and UV photoelectron spectroscopy (XPS, UPS), scanning tunneling microscopy (STM) and density functional theory (DFT) calculations have been used to probe the molecule/silicon interface. Chemical attachment of the three molecules on the Si surface was verified using the three techniques. Comparison of the valence structure as measured by UPS with the theoretical density of states calculated by DFT demonstrated the binding geometry of the molecules. Phenylacetylene and biphenyl-bisacetylene were found to bind in a "[2+2] cycloaddition" mode, binding at the terminal acetylene in both cases. Styrene, though, was found to bind in a [4+2] mode; binding at the terminal C of the vinyl group, as well as a member of the phenyl ring. This binding mode breaks the aromaticity of the phenyl molecule and the pi-conjugation length does not extend to the surface. Alignment between highest occupied molecular orbital (HOMO) and silicon valence band, as well as work function measurements were also provided by UPS. These measurements showed a small barrier between silicon valence band and molecular HOMO for all three molecules. However, from the work function measurements an interfacial dipole was found for the phenylacetylene molecules, but not for the styrene. It is hypothesized that charge transfer occurs in the phenylacetylene cases as the pi- system extends to the surface, allowing an efficient route for charge transfer; this does not hold for styrene. This work demonstrates the role of the chemical bond in charge transfer at the molecule/silicon interface.
Download or read book Journal written by American Chemical Society and published by . This book was released on 2003 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements written by and published by . This book was released on 1971 with total page 948 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1991 with total page 1104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Scientific and Industrial Reports written by and published by . This book was released on 1971 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2006 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics at Surfaces written by Andrew Zangwill and published by Cambridge University Press. This book was released on 1988-03-24 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physics at Surfaces is a unique graduate-level introduction to the physics and chemical physics of solid surfaces, and atoms and molecules that interact with solid surfaces. A subject of keen scientific inquiry since the last century, surface physics emerged as an independent discipline only in the late 1960s as a result of the development of ultra-high vacuum technology and high speed digital computers. With these tools, reliable experimental measurements and theoretical calculations could at last be compared. Progress in the last decade has been truly striking. This volume provides a synthesis of the entire field of surface physics from the perspective of a modern condensed matter physicist with a healthy interest in chemical physics. The exposition intertwines experiment and theory whenever possible, although there is little detailed discussion of technique. This much-needed text will be invaluable to graduate students and researchers in condensed matter physics, physical chemistry and materials science working in, or taking graduate courses in, surface science.
