physics of quantum rings nanoscience and technology

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Physics Of Quantum Rings

Author : Vladimir M. Fomin
ISBN : 9783642391972
Genre : Science
File Size : 80. 63 MB
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This book deals with a new class of materials, quantum rings. Innovative recent advances in experimental and theoretical physics of quantum rings are based on the most advanced state-of-the-art fabrication and characterization techniques as well as theoretical methods. The experimental efforts allow to obtain a new class of semiconductor quantum rings formed by capping self-organized quantum dots grown by molecular beam epitaxy. Novel optical and magnetic properties of quantum rings are associated with non-trivial topologies at the nanoscale. An adequate characterization of quantum rings is possible on the basis of modern characterization methods of nanostructures, such as Scanning Tunneling Microscopy. A high level of complexity is demonstrated to be needed for a dedicated theoretical model to adequately represent the specific features of quantum rings. The findings presented in this book contribute to develop low-cost high-performance electronic, spintronic, optoelectronic and information processing devices based on quantum rings.

Effect Of Static Electric Fields On The Electronic And Optical Properties Of Layered Semiconductor Nanostructures

Author : Volodya A. Harutyunyan
ISBN : 9781681080802
Genre : Science
File Size : 88. 21 MB
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This volume investigates the theory of the effect of static electric fields on one-electron states in. nanocylindrical and nanospherical heterolayers and quantized semiconductor films. Homogeneous external electrostatic field for all these structures has been considered as a "universal" modulating factor. For structures with radial symmetry, a study on the influence of radial static field and the electric field of a charged ring on one-electron states is presented. Chapters focusing on homogeneous field effect on low-dimensional excitonic states in the quantized films and quantum wires - in both wide bandgap and narrowband semiconductors - are also included. Other contents include calculations weak, moderate and strong electric fields, quantum-mechanical approximation and perturbation theory, the quasi-classical approximation (WKB method). Readers will benefit from the varied methodological to the subject which gives them a concrete analytical framework to solve problems related to nanoscale semiconductor design. The reference should prove to be useful to academics and professionals working in semiconductor nanoelectronics research and development.

Nano Scale Materials

Author : S. N. Sahu
ISBN : 1594549109
Genre : Technology & Engineering
File Size : 87. 76 MB
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Nano-Scale Materials - From Science to Technology

Nonequilibrium Quantum Transport Physics In Nanosystems

Author :
ISBN : 9789814472975
Genre :
File Size : 66. 35 MB
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Issues In Nanotechnology And Micotechnology Electronic And Photonic Research 2013 Edition

Author :
ISBN : 9781490107653
Genre : Technology & Engineering
File Size : 45. 47 MB
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Issues in Nanotechnology and Micotechnology—Electronic and Photonic Research: 2013 Edition is a ScholarlyEditions™ book that delivers timely, authoritative, and comprehensive information about Microstructures. The editors have built Issues in Nanotechnology and Micotechnology—Electronic and Photonic Research: 2013 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Microstructures in this book to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Nanotechnology and Micotechnology—Electronic and Photonic Research: 2013 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.

Foundations For Nanoscience And Nanotechnology

Author : Nils O. Petersen
ISBN : 9781482259087
Genre : Science
File Size : 35. 22 MB
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Do you ever wonder why size is so important at the scale of nanosystems? Do you want to understand the fundamental principles that govern the properties of nanomaterials? Do you want to establish a foundation for working in the field of nanoscience and nanotechnology? Then this book is written with you in mind. Foundations for Nanoscience and Nanotechnology provides some of the physical chemistry needed to understand why properties of small systems differ both from their constituent molecular entities and from the corresponding bulk matter. This is not a book about nanoscience and nanotechnology, but rather an exposition of basic knowledge required to understand these fields. The collection of topics makes it unique, and these topics include: The concept of quantum confinement and its consequences for electronic behaviour (Part II) The importance of surface thermodynamics for activity and interactions of nanoscale systems (Part III) The need to consider fluctuations as well as mean properties in small systems (Part IV) The interaction of light with matter and specific applications of spectroscopy and microscopy (Part V) This book is written for senior undergraduates or junior graduate students in science or engineering disciplines who wish to learn about or work in the areas of nanoscience and nanotechnology, but who do not have the requisite background in chemistry or physics. It may also be useful as a refresher or summary text for chemistry and physics students since the material is focused on those aspects of quantum mechanics, thermodynamics, and statistical mechanics that specifically relate to the size of objects.

Comprehensive Nanoscience And Technology

Author :
ISBN : 0123743966
Genre : Science
File Size : 54. 75 MB
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From the Introduction: Nanotechnology and its underpinning sciences are progressing with unprecedented rapidity. With technical advances in a variety of nanoscale fabrication and manipulation technologies, the whole topical area is maturing into a vibrant field that is generating new scientific research and a burgeoning range of commercial applications, with an annual market already at the trillion dollar threshold. The means of fabricating and controlling matter on the nanoscale afford striking and unprecedented opportunities to exploit a variety of exotic phenomena such as quantum, nanophotonic and nanoelectromechanical effects. Moreover, researchers are elucidating new perspectives on the electronic and optical properties of matter because of the way that nanoscale materials bridge the disparate theories describing molecules and bulk matter. Surface phenomena also gain a greatly increased significance; even the well-known link between chemical reactivity and surface-to-volume ratio becomes a major determinant of physical properties, when it operates over nanoscale dimensions. Against this background, this comprehensive work is designed to address the need for a dynamic, authoritative and readily accessible source of information, capturing the full breadth of the subject. Its six volumes, covering a broad spectrum of disciplines including material sciences, chemistry, physics and life sciences, have been written and edited by an outstanding team of international experts. Addressing an extensive, cross-disciplinary audience, each chapter aims to cover key developments in a scholarly, readable and critical style, providing an indispensible first point of entry to the literature for scientists and technologists from interdisciplinary fields. The work focuses on the major classes of nanomaterials in terms of their synthesis, structure and applications, reviewing nanomaterials and their respective technologies in well-structured and comprehensive articles with extensive cross-references. It has been a constant surprise and delight to have found, amongst the rapidly escalating number who work in nanoscience and technology, so many highly esteemed authors willing to contribute. Sharing our anticipation of a major addition to the literature, they have also captured the excitement of the field itself in each carefully crafted chapter. Along with our painstaking and meticulous volume editors, full credit for the success of this enterprise must go to these individuals, together with our thanks for (largely) adhering to the given deadlines. Lastly, we record our sincere thanks and appreciation for the skills and professionalism of the numerous Elsevier staff who have been involved in this project, notably Fiona Geraghty, Megan Palmer and Greg Harris, and especially Donna De Weerd-Wilson who has steered it through from its inception. We have greatly enjoyed working with them all, as we have with each other.

Spins In Optically Active Quantum Dots

Author : Oliver Gywat
ISBN : 9783527628995
Genre : Technology & Engineering
File Size : 72. 38 MB
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Filling a gap in the literature, this up-to-date introduction to the field provides an overview of current experimental techniques, basic theoretical concepts, and sample fabrication methods. Following an introduction, this monograph deals with optically active quantum dots and their integration into electro-optical devices, before looking at the theory of quantum confined states and quantum dots interacting with the radiation field. Final chapters cover spin-spin interaction in quantum dots as well as spin and charge states, showing how to use single spins for break-through quantum computation. A conclusion and outlook round off the volume. The result is a primer providing the essential basic knowledge necessary for young researchers entering the field, as well as semiconductor and theoretical physicists, PhD students in physics and material sciences, electrical engineers and materials scientists.

Clusters And Nano Assemblies

Author : P Jena
ISBN : 9789814480383
Genre : Technology & Engineering
File Size : 83. 24 MB
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While the field of clusters and nano-structures in the physical sciences has been actively pursued only over the past two decades, nature has known the benefits of the nanoscale for a very long time. The focus of the International Symposium on Clusters and Nano-Assemblies: Physical and Biological Systems was to explore ways in which an understanding of the unique properties of nano-scale biological systems such as proteins, enzyme reactions, RNA, and DNA can help us design novel materials composed of inorganic nano-scale systems, and how techniques developed in the physical sciences can lead to a fundamental understanding of biological systems. Bringing together the expert contributions from the conference, this book deals with the fundamental science and technology of atomic clusters, nano-structures and their assemblies in physical and biological systems. It explores in fascinating detail the manner in which finite size, low dimensionality, and reduced symmetry affect the properties of nano-assemblies. Contents:Atomic ClustersOrganic and Molecular ClustersCatalysisQuantum Dots/RingsNano-Wires and TubesMagnetic PropertiesElectrical and Optical PropertiesClusters on SupportNano-Growth on Strained Surfaces/Nano-AssembliesBiology at Molecular LevelBiotechnology Readership: Graduate students, researchers and academics in nanoscience and nanotechnology, chemistry and physics. Keywords:Clusters;Nano-Assemblies;Biotechnology;Clusters-on-Support;Quantum Dots;CatalysisKey Features:An exploration into how the unique properties of nano-scale biological systems can aid in the designing of novel materials composed of inorganic nano-scale systemsBrings into focus the outstanding problems and future directions of atomic clusters, nano-structures and their assemblies in physical and biological systemsIncludes researchers working on surfaces, interfaces, clusters, and nano-structures in the physical and biological sciences

Handbook Of Nanophysics

Author : Klaus D. Sattler
ISBN : 1420075438
Genre : Science
File Size : 56. 37 MB
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Intensive research on fullerenes, nanoparticles, and quantum dots in the 1990s led to interest in nanotubes and nanowires in subsequent years. Handbook of Nanophysics: Nanotubes and Nanowires focuses on the fundamental physics and latest applications of these important nanoscale materials and structures. Each peer-reviewed chapter contains a broad-based introduction and enhances understanding of the state-of-the-art scientific content through fundamental equations and illustrations, some in color. This volume first covers key aspects of carbon nanotubes, including quantum and electron transport, isotope engineering, and fluid flow, before exploring inorganic nanotubes, such as spinel oxide nanotubes, magnetic nanotubes, and self-assembled peptide nanostructures. It then focuses on germanium, gallium nitride, gold, polymer, and organic nanowires and their properties. The book also discusses nanowire arrays, nanorods, atomic wires, monatomic chains, ultrathin gold nanowires, and several nanorings, including superconducting, ferromagnetic, and quantum dot nanorings. Nanophysics brings together multiple disciplines to determine the structural, electronic, optical, and thermal behavior of nanomaterials; electrical and thermal conductivity; the forces between nanoscale objects; and the transition between classical and quantum behavior. Facilitating communication across many disciplines, this landmark publication encourages scientists with disparate interests to collaborate on interdisciplinary projects and incorporate the theory and methodology of other areas into their work.

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