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Books > Professional & Technical > Industrial chemistry & manufacturing technologies > Other manufacturing technologies > Precision instruments manufacture > General

Recent Advances in Sliding Modes: From Control to Intelligent Mechatronics (Paperback, Softcover reprint of the original 1st... Recent Advances in Sliding Modes: From Control to Intelligent Mechatronics (Paperback, Softcover reprint of the original 1st ed. 2015)
Xing Huo Yu, Mehmet Önder Efe
R3,864 Discovery Miles 38 640 Ships in 18 - 22 working days

This volume is dedicated to Professor Okyay Kaynak to commemorate his life time impactful research and scholarly achievements and outstanding services to profession. The 21 invited chapters have been written by leading researchers who, in the past, have had association with Professor Kaynak as either his students and associates or colleagues and collaborators. The focal theme of the volume is the Sliding Modes covering a broad scope of topics from theoretical investigations to their significant applications from Control to Intelligent Mechatronics.

RHEED Transmission Mode and Pole Figures - Thin Film and Nanostructure Texture Analysis (Paperback, Softcover reprint of the... RHEED Transmission Mode and Pole Figures - Thin Film and Nanostructure Texture Analysis (Paperback, Softcover reprint of the original 1st ed. 2014)
Gwo-Ching Wang, Toh-Ming Lu
R3,240 Discovery Miles 32 400 Ships in 18 - 22 working days

This unique book covers the fundamental principle of electron diffraction, basic instrumentation of RHEED, definitions of textures in thin films and nanostructures, mechanisms and control of texture formation, and examples of RHEED transmission mode measurements of texture and texture evolution of thin films and nanostructures. Also presented is a new application of RHEED in the transmission mode called RHEED pole figure technique that can be used to monitor the texture evolution in thin film growth and nanostructures and is not limited to single crystal epitaxial film growth. Details of the construction of RHEED pole figures and the interpretation of observed pole figures are presented. Materials covered include metals, semiconductors, and thin insulators. This book also: Presents a new application of RHEED in the transmission mode Introduces a variety of textures from metals, semiconductors, compound semiconductors, and their characteristics in RHEED pole figures Provides examples of RHEED measurements of texture and texture evolution, construction of RHEED pole figures, and interpretation of observed pole figures RHEED Transmission Mode and Pole Figures: Thin Film and Nanostructure Texture Analysis is ideal for researchers in materials science and engineering and nanotechnology.

The Non-Equilibrium Green's Function Method for Nanoscale Device Simulation (Paperback, Softcover reprint of the original... The Non-Equilibrium Green's Function Method for Nanoscale Device Simulation (Paperback, Softcover reprint of the original 1st ed. 2014)
Mahdi Pourfath
R3,788 Discovery Miles 37 880 Ships in 18 - 22 working days

For modeling the transport of carriers in nanoscale devices, a Green-function formalism is the most accurate approach. Due to the complexity of the formalism, one should have a deep understanding of the underlying principles and use smart approximations and numerical methods for solving the kinetic equations at a reasonable computational time. In this book the required concepts from quantum and statistical mechanics and numerical methods for calculating Green functions are presented. The Green function is studied in detail for systems both under equilibrium and under nonequilibrium conditions. Because the formalism enables rigorous modeling of different scattering mechanisms in terms of self-energies, but an exact evaluation of self-energies for realistic systems is not possible, their approximation and inclusion in the quantum kinetic equations of the Green functions are elaborated. All the elements of the kinetic equations, which are the device Hamiltonian, contact self-energies and scattering self-energies, are examined and efficient methods for their evaluation are explained. Finally, the application of these methods to study novel electronic devices such as nanotubes, graphene, Si-nanowires and low-dimensional thermoelectric devices and photodetectors are discussed.

Graphene Quantum Dots (Paperback, Softcover reprint of the original 1st ed. 2014): Alev Devrim Guclu, Pawel Potasz, Marek... Graphene Quantum Dots (Paperback, Softcover reprint of the original 1st ed. 2014)
Alev Devrim Guclu, Pawel Potasz, Marek Korkusinski, Pawel Hawrylak
R3,092 Discovery Miles 30 920 Ships in 18 - 22 working days

This book reflects the current status of theoretical and experimental research of graphene based nanostructures, in particular quantum dots, at a level accessible to young researchers, graduate students, experimentalists and theorists. It presents the current state of research of graphene quantum dots, a single or few monolayer thick islands of graphene. It introduces the reader to the electronic and optical properties of graphite, intercalated graphite and graphene, including Dirac fermions, Berry's phase associated with sublattices and valley degeneracy, covers single particle properties of graphene quantum dots, electron-electron interaction, magnetic properties and optical properties of gated graphene nanostructures. The electronic, optical and magnetic properties of the graphene quantum dots as a function of size, shape, type of edge and carrier density are considered. Special attention is paid to the understanding of edges and the emergence of edge states for zigzag edges. Atomistic tight binding and effective mass approaches to single particle calculations are performed. Furthermore, the theoretical and numerical treatment of electron-electron interactions at the mean-field, HF, DFT and configuration-interaction level is described in detail.

Flip-Flop Design in Nanometer CMOS - From High Speed to Low Energy (Paperback, Softcover reprint of the original 1st ed. 2015):... Flip-Flop Design in Nanometer CMOS - From High Speed to Low Energy (Paperback, Softcover reprint of the original 1st ed. 2015)
Massimo Alioto, Elio Consoli, Gaetano Palumbo
R3,335 Discovery Miles 33 350 Ships in 18 - 22 working days

This book provides a unified treatment of Flip-Flop design and selection in nanometer CMOS VLSI systems. The design aspects related to the energy-delay tradeoff in Flip-Flops are discussed, including their energy-optimal selection according to the targeted application, and the detailed circuit design in nanometer CMOS VLSI systems. Design strategies are derived in a coherent framework that includes explicitly nanometer effects, including leakage, layout parasitics and process/voltage/temperature variations, as main advances over the existing body of work in the field. The related design tradeoffs are explored in a wide range of applications and the related energy-performance targets. A wide range of existing and recently proposed Flip-Flop topologies are discussed. Theoretical foundations are provided to set the stage for the derivation of design guidelines, and emphasis is given on practical aspects and consequences of the presented results. Analytical models and derivations are introduced when needed to gain an insight into the inter-dependence of design parameters under practical constraints. This book serves as a valuable reference for practicing engineers working in the VLSI design area, and as text book for senior undergraduate, graduate and postgraduate students (already familiar with digital circuits and timing).

Nanophotonic Information Physics - Nanointelligence and Nanophotonic Computing (Paperback, Softcover reprint of the original... Nanophotonic Information Physics - Nanointelligence and Nanophotonic Computing (Paperback, Softcover reprint of the original 1st ed. 2014)
Makoto Naruse
R3,314 Discovery Miles 33 140 Ships in 18 - 22 working days

This book provides a new direction in the field of nano-optics and nanophotonics from information and computing-related sciences and technology. Entitled by "Information Physics and Computing in NanosScale Photonics and Materials", IPCN in short, the book aims to bring together recent progresses in the intersection of nano-scale photonics, information, and enabling technologies. The topic will include (1) an overview of information physics in nanophotonics, (2) DNA self-assembled nanophotonic systems, (3) Functional molecular sensing, (4) Smart fold computing, an architecture for nanophotonics, (5) semiconductor nanowire and its photonic applications, (6) single photoelectron manipulation in imaging sensors, (6) hierarchical nanophotonic systems, (8) photonic neuromorphic computing, and (9) SAT solver and decision making based on nanophotonics.

Nanofluidics - Thermodynamic and Transport Properties (Paperback, Softcover reprint of the original 1st ed. 2014): Efstathios... Nanofluidics - Thermodynamic and Transport Properties (Paperback, Softcover reprint of the original 1st ed. 2014)
Efstathios E. (Stathis) Michaelides
R4,905 Discovery Miles 49 050 Ships in 18 - 22 working days

This volume offers a comprehensive examination of the subject of heat and mass transfer with nanofluids as well as a critical review of the past and recent research projects in this area. Emphasis is placed on the fundamentals of the transport processes using particle-fluid suspensions, such as nanofluids. The nanofluid research is examined and presented in a holistic way using a great deal of our experience with the subjects of continuum mechanics, statistical thermodynamics, and non-equilibrium thermodynamics of transport processes. Using a thorough database, the experimental, analytical, and numerical advances of recent research in nanofluids are critically examined and connected to past research with medium and fine particles as well as to functional engineering systems. Promising applications and technological issues of heat/mass transfer system design with nanofluids are also discussed. This book also: Provides a deep scientific analysis of nanofluids using classical thermodynamics and statistical thermodynamics to explain and interpret experimental observations Presents the theory and experimental results for both thermodynamic and transport properties Examines all transport properties and transport processes as well as their relationships through the pertinent macroscopic coefficients Combines recent knowledge pertaining to nanofluids with the previous fifty years of research on particulate flows, including research on transient flow and heat transfer of particulate suspensions Conducts an holistic examination of the material from more than 500 archival publications

Fundamentals of Laser-Assisted Micro- and Nanotechnologies (Paperback, Softcover reprint of the original 1st ed. 2014): Vadim... Fundamentals of Laser-Assisted Micro- and Nanotechnologies (Paperback, Softcover reprint of the original 1st ed. 2014)
Vadim P. Veiko, Vitaly I. Konov
R3,504 Discovery Miles 35 040 Ships in 18 - 22 working days

This book covers the state of the art of laser micro- and nanotechnology. The physical fundamentals of different processes and the application are presented. The book deals with different materials like phase change and memory alloys, thin films, polymers etc. New phenomena and mechanisms of laser-matter interaction in nano-domains are explained. This book is helpful for students, postgraduates, engineers and researches working not only in the field of laser microtechnology but also in high-tech industry, like photonics, microelectronics, information technology.

Molecular Magnets - Physics and Applications (Paperback, Softcover reprint of the original 1st ed. 2014): Juan Bartolome,... Molecular Magnets - Physics and Applications (Paperback, Softcover reprint of the original 1st ed. 2014)
Juan Bartolome, Fernando Luis, Julio F. Fernandez
R3,694 Discovery Miles 36 940 Ships in 18 - 22 working days

This book provides an overview of the physical phenomena discovered in magnetic molecular materials over the last 20 years. It is written by leading scientists having made the most important contributions to this active area of research. The main topics of this book are the principles of quantum tunneling and quantum coherence of single-molecule magnets (SMMs), phenomena which go beyond the physics of individual molecules, such as the collective behavior of arrays of SMMs, the physics of one-dimensional single-chain magnets and magnetism of SMMs grafted on substrates. The potential applications of these physical phenomena to classical and quantum information, communication technologies, and the emerging fields of molecular spintronics and magnetic refrigeration are stressed. The book is written for graduate students, researchers and non-experts in this field of research.

Advanced Microsystems for Automotive Applications 2013 - Smart Systems for Safe and Green Vehicles (Paperback, Softcover... Advanced Microsystems for Automotive Applications 2013 - Smart Systems for Safe and Green Vehicles (Paperback, Softcover reprint of the original 1st ed. 2013)
Jan Fischer-Wolfarth, Gereon Meyer
R7,586 Discovery Miles 75 860 Ships in 18 - 22 working days

The road vehicle of the future will embrace innovations from three major automotive technology fields: driver assistance systems, vehicle networking and alternative propulsion. Smart systems such as adaptive ICT components and MEMS devices, novel network architectures, integrated sensor systems, intelligent interfaces and functional materials form the basis of these features and permit their successful and synergetic integration. They increasingly appear to be the key enabling technologies for safe and green road mobility. For more than fifteen years the International Forum on Advanced Microsystems for Automotive Applications (AMAA) has been successful in detecting novel trends and in discussing the technological implications from early on. The topic of the AMAA 2013 will be "Smart Systems for Safe and Green Vehicles". This book contains peer-reviewed papers written by leading engineers and researchers which all address the ongoing research and novel developments in the field. www.amaa.de

Porous Metals with Directional Pores (Paperback, Softcover reprint of the original 1st ed. 2013): Hideo Nakajima Porous Metals with Directional Pores (Paperback, Softcover reprint of the original 1st ed. 2013)
Hideo Nakajima
R3,841 Discovery Miles 38 410 Ships in 18 - 22 working days

This book reviews the recent development of fabrication methods and various properties of lotus-type porous metals and their applications. The nucleation and growth mechanism of the directional pores in metals are discussed in comparison with a model experiment of carbon dioxide pores in ice. Three casting techniques are introduced to produce not only metals and alloys but also intermetallic compounds, semiconductors, and ceramics: mold casting, continuous zone melting, and continuous casting. The latter has merits for mass production of lotus metals to control porosity, pore size and pore direction. Furthermore, anisotropic behavior of elastic, mechanical properties, thermal and electrical conductivity, magnetic properties, and biocompatibility are introduced as peculiar features of lotus metals.

Vehicle Dynamics - Modeling and Simulation (Paperback, Softcover reprint of the original 1st ed. 2014): Dieter Schramm, Manfred... Vehicle Dynamics - Modeling and Simulation (Paperback, Softcover reprint of the original 1st ed. 2014)
Dieter Schramm, Manfred Hiller, Roberto Bardini
R4,416 Discovery Miles 44 160 Ships in 18 - 22 working days

The authors examine in detail the fundamentals and mathematical descriptions of the dynamics of automobiles. In this context different levels of complexity will be presented, starting with basic single-track models up to complex three-dimensional multi-body models. A particular focus is on the process of establishing mathematical models on the basis of real cars and the validation of simulation results. The methods presented are explained in detail by means of selected application scenarios.

Design, Modeling and Control of Nanopositioning Systems (Paperback, Softcover reprint of the original 1st ed. 2014): Andrew J.... Design, Modeling and Control of Nanopositioning Systems (Paperback, Softcover reprint of the original 1st ed. 2014)
Andrew J. Fleming, Kam K. Leang
R5,095 Discovery Miles 50 950 Ships in 18 - 22 working days

Covering the complete design cycle of nanopositioning systems, this is the first comprehensive text on the topic. The book first introduces concepts associated with nanopositioning stages and outlines their application in such tasks as scanning probe microscopy, nanofabrication, data storage, cell surgery and precision optics. Piezoelectric transducers, employed ubiquitously in nanopositioning applications are then discussed in detail including practical considerations and constraints on transducer response. The reader is then given an overview of the types of nanopositioner before the text turns to the in-depth coverage of mechanical design including flexures, materials, manufacturing techniques, and electronics. This process is illustrated by the example of a high-speed serial-kinematic nanopositioner. Position sensors are then catalogued and described and the text then focuses on control. Several forms of control are treated: shunt control, feedback control, force feedback control and feedforward control (including an appreciation of iterative learning control). Performance issues are given importance as are problems limiting that performance such as hysteresis and noise which arise in the treatment of control and are then given chapter-length attention in their own right. The reader also learns about cost functions and other issues involved in command shaping, charge drives and electrical considerations. All concepts are demonstrated experimentally including by direct application to atomic force microscope imaging. Design, Modeling and Control of Nanopositioning Systems will be of interest to researchers in mechatronics generally and in control applied to atomic force microscopy and other nanopositioning applications. Microscope developers and mechanical designers of nanopositioning devices will find the text essential reading.

Surface Tension in Microsystems - Engineering Below the Capillary Length (Paperback, Softcover reprint of the original 1st ed.... Surface Tension in Microsystems - Engineering Below the Capillary Length (Paperback, Softcover reprint of the original 1st ed. 2013)
Pierre Lambert
R5,142 Discovery Miles 51 420 Ships in 18 - 22 working days

This book describes how surface tension effects can be used by engineers to provide mechanical functions in miniaturized products (<1 mm). Even if precursors of this field such as Jurin or Laplace already date back to the 18th century, describing surface tension effects from a mechanical perspective is very recent. The originality of this book is to consider the effects of capillary bridges on solids, including forces and torques exerted both statically and dynamically by the liquid along the 6 degrees-of-freedom. It provides a comprehensive approach to various applications, such as capillary adhesion (axial force), centering force in packaging and micro-assembly (lateral force) and recent developments such as a capillary motor (torque). It devises how surface tension can be used to provide mechanical functions such as actuation (bubble-actuated compliant table), sealing and tightness, energy harvesting, nanodispending.

MEMS and Nanotechnology, Volume 5 - Proceedings of the 2013 Annual Conference on Experimental and Applied Mechanics (Paperback,... MEMS and Nanotechnology, Volume 5 - Proceedings of the 2013 Annual Conference on Experimental and Applied Mechanics (Paperback, Softcover reprint of the original 1st ed. 2014)
Gordon Shaw III, Barton C. Prorok, LaVern Starman, Cosme Furlong
R5,729 Discovery Miles 57 290 Ships in 18 - 22 working days

MEMS and Nanotechnology, Volume 5: Proceedings of the 2013 Annual Conference on Experimental and Applied Mechanics, the fifth volume of eight from the Conference, brings together contributions to this important area of research and engineering. The collection presents early findings and case studies on a wide range of areas, including: Microelectronics Packaging Single Atom/Molecule Mechanical Testing MEMS Devices & Fabrication In-Situ Mechanical Testing Nanoindentation Experimental Analysis of Low-Dimensional Materials for Nanotechnology

Sustainable Automotive Technologies 2013 - Proceedings of the 5th International Conference ICSAT 2013 (Paperback, Softcover... Sustainable Automotive Technologies 2013 - Proceedings of the 5th International Conference ICSAT 2013 (Paperback, Softcover reprint of the original 1st ed. 2014)
Joerg Wellnitz, Aleksandar Subic, Ramona Trufin
R5,931 Discovery Miles 59 310 Ships in 18 - 22 working days

This book captures selected peer reviewed papers presented at the 5th International Conference on Sustainable Automotive Technologies, ICSAT 2013, held in Ingolstadt, Germany. ICSAT is the state-of-the-art conference in the field of new technologies for transportation. The book brings together the work of international researchers and practitioners under the following interrelated headings: fuel transportation and storage, material recycling, manufacturing and management costs, engines and emission reduction. The book provides a very good overview of research and development activities focused on new technologies and approaches capable of meeting the challenges to sustainable mobility.

Physics of Graphene (Paperback, Softcover reprint of the original 1st ed. 2014): Hideo Aoki, Mildred S. Dresselhaus Physics of Graphene (Paperback, Softcover reprint of the original 1st ed. 2014)
Hideo Aoki, Mildred S. Dresselhaus
R4,926 Discovery Miles 49 260 Ships in 18 - 22 working days

This book provides a state of the art report of the knowledge accumulated in graphene research. The fascination with graphene has been growing very rapidly in recent years and the physics of graphene is now becoming one of the most interesting as well as the most fast-moving topics in condensed-matter physics. The Nobel prize in physics awarded in 2010 has given a tremendous impetus to this topic. The horizon of the physics of graphene is ever becoming wider, where physical concepts go hand in hand with advances in experimental techniques. Thus this book is expanding the interests to not only transport but optical and other properties for systems that include multilayer as well as monolayer graphene systems. The book comprises experimental and theoretical knowledge. The book is also accessible to graduate students.

Next Generation Spin Torque Memories (Paperback, 1st ed. 2017): Brajesh Kumar Kaushik, Shivam Verma, Anant Aravind Kulkarni,... Next Generation Spin Torque Memories (Paperback, 1st ed. 2017)
Brajesh Kumar Kaushik, Shivam Verma, Anant Aravind Kulkarni, Sanjay Prajapati
R1,769 Discovery Miles 17 690 Ships in 18 - 22 working days

This book offers detailed insights into spin transfer torque (STT) based devices, circuits and memories. Starting with the basic concepts and device physics, it then addresses advanced STT applications and discusses the outlook for this cutting-edge technology. It also describes the architectures, performance parameters, fabrication, and the prospects of STT based devices. Further, moving from the device to the system perspective it presents a non-volatile computing architecture composed of STT based magneto-resistive and all-spin logic devices and demonstrates that efficient STT based magneto-resistive and all-spin logic devices can turn the dream of instant on/off non-volatile computing into reality.

Proceedings of the International Conference of Mechatronics and Cyber-MixMechatronics - 2017 (Paperback, 1st ed. 2018):... Proceedings of the International Conference of Mechatronics and Cyber-MixMechatronics - 2017 (Paperback, 1st ed. 2018)
Gheorghe I. Gheorghe
R4,640 Discovery Miles 46 400 Ships in 18 - 22 working days

This first edition of conference Proceedings reflects the expansion of the field of Mechatronics, which has now taken its place in the world of newer transdisciplinary fields of Adaptronics, Integronics, and Cyber-Mix Mechatronics. It presents state-of-the art advances in Mechatronics, Adaptronics, Integronics and Cyber-Mix-Mechatronics. The 1st International Conference of Mechatronics and Cyber-MixMechatronics/ICOMECYME was organized by the National Institute of R&D in Mechatronics and Measurement Technique in Bucharest (Romania), on September 7th-8th, 2017 and attracted specialists from all over the world-including North America, South America, and Asia. In addition to presenting research results, ICOMECYME also offered a forum for exchange between R&D experts.

Nanoelectronics Fundamentals - Materials, Devices and Systems (Hardcover, 1st ed. 2019): Hassan Raza Nanoelectronics Fundamentals - Materials, Devices and Systems (Hardcover, 1st ed. 2019)
Hassan Raza
R5,171 Discovery Miles 51 710 Ships in 18 - 22 working days

This book covers the state of the art in the theoretical framework, computational modeling, and the fabrication and characterization of nanoelectronics devices. It addresses material properties, device physics, circuit analysis, system design, and a range of applications. A discussion on the nanoscale fabrication, characterization and metrology is also included. The book offers a valuable resource for researchers, graduate students, and senior undergraduate students in engineering and natural sciences, who are interested in exploring nanoelectronics from materials, devices, systems, and applications perspectives.

Fundamentals of Friction and Wear on the Nanoscale (Paperback, Softcover reprint of the original 2nd ed. 2015): Enrico Gnecco,... Fundamentals of Friction and Wear on the Nanoscale (Paperback, Softcover reprint of the original 2nd ed. 2015)
Enrico Gnecco, Ernst Meyer
R6,007 Discovery Miles 60 070 Ships in 18 - 22 working days

This book provides an updated review on the development of scanning probe microscopy and related techniques, and the availability of computational techniques not even imaginable a few decades ago. The 36 chapters cover instrumental aspects, theoretical models and selected experimental results, thus offering a broad panoramic view on fundamental issues in nanotribology which are currently being investigated. Compared to the first edition, several topics have been added, including triboluminescence, graphene mechanics, friction and wear in liquid environments, capillary condensation, and multiscale friction modeling. Particular care has been taken to avoid overlaps and guarantee the independence of the chapters. In this way, our book aims to become a key reference on this subject for the next five to ten years to come.

Lasers in Materials Science (Paperback, Softcover reprint of the original 1st ed. 2014): Marta Castillejo, Paolo M. Ossi,... Lasers in Materials Science (Paperback, Softcover reprint of the original 1st ed. 2014)
Marta Castillejo, Paolo M. Ossi, Leonid Zhigilei
R5,042 Discovery Miles 50 420 Ships in 18 - 22 working days

This book covers various aspects of lasers in materials science, including a comprehensive overview on basic principles of laser-materials interactions and applications enabled by pulsed laser systems. The material is organized in a coherent way, providing the reader with a harmonic architecture. While systematically covering the major current and emerging areas of lasers processing applications, the Volume provides examples of targeted modification of material properties achieved through careful control of the processing conditions and laser irradiation parameters. Special emphasis is placed on specific strategies aimed at nanoscale control of material structure and properties to match the stringent requirements of modern applications. Laser fabrication of novel nanomaterials, which expands to the domains of photonics, photovoltaics, sensing, and biomedical applications, is also discussed in the Volume. This book assembles chapters based on lectures delivered at the Venice International School on Lasers in Materials Science which was held in Isola di San Servolo, Venice, Italy, in July, 2012.

Nano-tribology and Materials in MEMS (Paperback, Softcover reprint of the original 1st ed. 2013): Sujeet K. Sinha, N.... Nano-tribology and Materials in MEMS (Paperback, Softcover reprint of the original 1st ed. 2013)
Sujeet K. Sinha, N. Satyanarayana, Seh Chun Lim
R3,356 Discovery Miles 33 560 Ships in 18 - 22 working days

This book brings together recent developments in the areas of MEMS tribology, novel lubricants and coatings for nanotechnological applications, biomimetics in tribology and fundamentals of micro/nano-tribology. Tribology plays important roles in the functioning and durability of machines at small length scales because of the problems associated with strong surface adhesion, friction, wear etc. Recently, a number of studies have been conducted to understand tribological phenomena at nano/micro scales and many new tribological solutions for MEMS have been proposed.

Self-Organized Quantum Dots for Memories - Electronic Properties and Carrier Dynamics (Paperback, Softcover reprint of the... Self-Organized Quantum Dots for Memories - Electronic Properties and Carrier Dynamics (Paperback, Softcover reprint of the original 1st ed. 2014)
Tobias Nowozin
R3,060 Discovery Miles 30 600 Ships in 18 - 22 working days

Today’s semiconductor memory market is divided between two types of memory: DRAM and Flash. Each has its own advantages and disadvantages. While DRAM is fast but volatile, Flash is non-volatile but slow. A memory system based on self-organized quantum dots (QDs) as storage node could combine the advantages of modern DRAM and Flash, thus merging the latter’s non-volatility with very fast write times. This thesis investigates the electronic properties of and carrier dynamics in self-organized quantum dots by means of time-resolved capacitance spectroscopy and time-resolved current measurements. The first aim is to study the localization energy of various QD systems in order to assess the potential of increasing the storage time in QDs to non-volatility. Surprisingly, it is found that the major impact of carrier capture cross-sections of QDs is to influence, and at times counterbalance, carrier storage in addition to the localization energy. The second aim is to study the coupling between a layer of self-organized QDs and a two-dimensional hole gas (2DHG), which is relevant for the read-out process in memory systems. The investigation yields the discovery of the many-particle ground states in the QD ensemble. In addition to its technological relevance, the thesis also offers new insights into the fascinating field of nanostructure physics.

Microstructure-Property Optimization in Metallic Glasses (Paperback, Softcover reprint of the original 1st ed. 2015): Baran... Microstructure-Property Optimization in Metallic Glasses (Paperback, Softcover reprint of the original 1st ed. 2015)
Baran Sarac
R2,880 Discovery Miles 28 800 Ships in 18 - 22 working days

This thesis consists of an in-depth study of investigating microstructure-property relationships in bulk metallic glasses using a novel quantitative approach by which influence of the second phase features on mechanical properties can be independently and systematically analyzed. The author evaluates and optimizes the elastic and plastic deformation, as well as the overall toughness of cellular honeycombs under in-plane compression and porous heterostructures under uniaxial tension. The study reveals three major deformation zones in cellular metallic glass structures, where deformation changes from collective buckling showing non-linear elasticity to localized failure exhibiting a brittle-like deformation, and finally to global sudden failure with negligible plasticity as the length to thickness ratio of the ligaments increases. The author found that spacing and size of the pores, the pore configuration within the matrix, and the overall width of the sample determines the extent of deformation, where the optimized values are attained for pore diameter to spacing ratio of one with AB type pore stacking.

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