Caracterisation Non Lineaire Avancee De Transistors De Puissance Pour La Validation De Leur Modele Cao

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Caractérisation non linéaire avancée de transistors de puissance pour la validation de leur modèle CAO

Author : Tony Gasseling
Publisher :
ISBN 13 :
Total Pages : 229 pages
Book Rating : 4.:/5 (799 download)

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Book Synopsis Caractérisation non linéaire avancée de transistors de puissance pour la validation de leur modèle CAO by : Tony Gasseling

Download or read book Caractérisation non linéaire avancée de transistors de puissance pour la validation de leur modèle CAO written by Tony Gasseling and published by . This book was released on 2003 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le travail présenté dans ce mémoire propose une contribution à la conception optimisée d'amplificateurs de puissance par l'utilisation de plusieurs caractérisations fonctionnelles. Celles ci sont réalisées aux premiers stades de la conception, au niveau du transistor en environnement source et load pull. Il est ainsi montré qu'un banc load pull fonctionnant en mode pulsé permet de participer à la validation des technologies utilisées pour la génération de fortes puissances aux fréquences microondes (Bande S). Cette étape permet également de valider fortement les modèles non linéaires électrothermiques des transistors développés à cet effet. Dans le domaine millimétrique, l'amplification de puissance sous contrainte de rendement et de linéarité est à l'heure actuelle un des points critiques du fait des faibles réserves de gain proposées. Dans ce contexte, le développement d'un banc source et load pull actif fonctionnant en bande K et permettant de déterminer les conditions optimales de polarisation et d'adaptation pour l'obtention du meilleur compromis rendement/linéarité se révèle être de première importance pour la conception optimisée d'amplificateur. Enfin, une nouvelle technique de caractérisation dédiée à l'extraction des quatre paramètres S à chaud en environnement load pull est proposée. Une application de cette nouvelle caractérisation a ainsi permis de prédire les oscillations paramétriques hors bande pouvant apparaître en fonction des conditions opératoires lorsque le transistor fonctionne en régime fort signal

Modèles non linéaires distribués des transistors à effet de champ

Author : Benoît Mallet-Guy
Publisher :
ISBN 13 :
Total Pages : 162 pages
Book Rating : 4.:/5 (799 download)

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Book Synopsis Modèles non linéaires distribués des transistors à effet de champ by : Benoît Mallet-Guy

Download or read book Modèles non linéaires distribués des transistors à effet de champ written by Benoît Mallet-Guy and published by . This book was released on 1999 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: LE TRAVAIL PRESENTE DANS CE MEMOIRE CONCERNE LA MODELISATION ELECTRIQUE DISTRIBUEE DES TRANSISTORS A EFFET DE CHAMP HYPERFREQUENCES AFIN DE DISPOSER D'UNE DESCRIPTION PLUS FINE DE CE COMPOSANT POUR LA CAO DES CIRCUITS MICROONDES. DEUX NOUVELLES APPROCHES DE MODELISATION SONT PRESENTEES. ELLES S'APPUIENT TOUTES LES DEUX SUR LA CARACTERISATION EXPERIMENTALE DU TRANSISTOR. DANS LA PREMIERE, LE CANAL EST REPRESENTE PAR UNE LIGNE DE TRANSMISSION ACTIVE. LE MODELE NON LINEAIRE RESULTANT A MONTRE, LORS DE SA VALIDATION PAR DES MESURES DU TYPE LOAD-PULL, UNE REELLE AMELIORATION A REPRODUIRE LE MECANISME DE SATURATION DE LA PUISSANCE DE SORTIE. LE DEUXIEME MODELE PRESENTE DANS CE MANUSCRIT UTILISE UNE DESCRIPTION ELECTROMAGNETIQUE DES PARTIES PASSIVES DU TRANSISTOR, TANDIS QUE CHAQUE DOIGT DU COMPOSANT EST MODELISE PAR UN CIRCUIT EQUIVALENT ELECTRIQUE INTRINSEQUE. CE MODELE A MONTRE DES QUALITES TRES INTERESSANTES D'EXTRAPOLATION DE LA TAILLE ET DE LA GEOMETRIE DU TRANSISTOR MODELISE. IL PERMET EGALEMENT UNE ETUDE BEAUCOUP PLUS REALISTE DE LA STABILITE DES TRANSISTORS A FORT DEVELOPPEMENT DE GRILLE.

Modélisation électrothermique des transistors bipolaires à hétérojonction

Author : Thierry Peyretaillade
Publisher :
ISBN 13 :
Total Pages : 217 pages
Book Rating : 4.:/5 (799 download)

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Book Synopsis Modélisation électrothermique des transistors bipolaires à hétérojonction by : Thierry Peyretaillade

Download or read book Modélisation électrothermique des transistors bipolaires à hétérojonction written by Thierry Peyretaillade and published by . This book was released on 1997 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: CE TRAVAIL, PROPOSE PAR LE C.N.E.S., RENTRE DANS LE CONTEXTE D'UNE ACTION R&D DESTINEE A DEMONTRER LES POTENTIALITES OFFERTES PAR LE TBH. DANS LE BUT DE CONCEVOIR DES AMPLIFICATEURS DE PUISSANCE A HAUT RENDEMENT EN TECHNOLOGIE M.M.I.C., UN MODELE NON LINEAIRE ELECTROTHERMIQUE DU TBH A ETE DEVELOPPE. LA DETERMINATION DE CE MODELE REPOSE SUR UNE CARACTERISATION IMPULSIONNELLE DU TRANSISTOR PERMETTANT D'OBTENIR LES EVOLUTIONS NON LINEAIRES DE SES CARACTERISTIQUES ELECTRIQUES EN FONCTION DE LA TEMPERATURE DE JONCTION. UN MODELE NON LINEAIRE ELECTROTHERMIQUE DE TBH TENANT COMPTE DES EFFETS NON QUASI STATIQUES DU TRANSISTOR A ETE DETERMINE. APRES UNE VALIDATION DU MODELE SUR DIFFERENTS ECHANTILLONS ET SUR LA CONCEPTION D'UN AMPLIFICATEUR DE PUISSANCE A HAUT RENDEMENT DE TYPE CLASSE F EN BANDE S, NOUS AVONS ETUDIE LE PHENOMENE D'INSTABILITE THERMIQUE (EFFET CRUNCH) APPARAISSANT DANS LES TRANSISTORS MULTIDOIGTS. FINALEMENT, LA CONCEPTION NON LINEAIRE D'AMPLIFICATEURS DE PUISSANCE A HAUT RENDEMENT EN BANDE X EST ETUDIEE. CETTE ETUDE A ETE INTEGRALEMENT CONDUITE A PARTIR DE L'UTILISATION CONJOINTE DU MODELE NON LINEAIRE ET DES LOGICIELS DE C.A.O. LA QUALITE DES RESULTATS OBTENUS DES LA PREMIERE FABRICATION, VALIDE LE MODELE DEVELOPPE ET TEMOIGNE DE L'EFFICACITE DE LA METHODOLOGIE DE CONCEPTION EMPLOYEE.

Caractérisation et modélisation électrothermique non linéaire de transistors à effet de champ GaN pour l'amplification de puissance micro-onde

Download Caractérisation et modélisation électrothermique non linéaire de transistors à effet de champ GaN pour l'amplification de puissance micro-onde PDF Online Free

Author : Christophe Charbonniaud
Publisher :
ISBN 13 :
Total Pages : 191 pages
Book Rating : 4.:/5 (799 download)

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Book Synopsis Caractérisation et modélisation électrothermique non linéaire de transistors à effet de champ GaN pour l'amplification de puissance micro-onde by : Christophe Charbonniaud

Download or read book Caractérisation et modélisation électrothermique non linéaire de transistors à effet de champ GaN pour l'amplification de puissance micro-onde written by Christophe Charbonniaud and published by . This book was released on 2005 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: L’objectif de cette étude est d’évaluer les potentialités des transistors HEMTs AlGaN/GaN pour l’amplification de puissance aux fréquences micro-ondes, à l’aide d’un banc de mesures I(V) et paramètres [S] en régime impulsionnel, et de proposer un modèle précis de ce type de transistors facilement implémentable dans les logiciels de C.A.O. des circuits. Après un passage en revue des différentes technologies disponibles sur le marché pour l’amplification de puissance, les transistors HEMTs grand gap à base de Nitrures de Gallium apparaissent comme des candidats naturels pour ces applications (Figures de mérites de Johnson, ...). Cependant, ces transistors plus que prometteurs ne sont pas exempts de défauts. En effet, plusieurs phénomènes limitatifs inhérents à la technologie GaN, à savoir l’auto-échauffement et les effets des pièges, doivent être pris en compte lors de la conception des circuits micro-ondes. Une étude de ces différents effets limitatifs en terme de puissance est effectuée. Enfin, un modèle non-linéaire électrothermique d’un transistor HEMT 8x125 μm est présenté, et validé à l’aide de deux banc de mesures fonctionnelles (banc Load-Pull et banc LSNA).

Modélisation des transistors Mosfets pour les applications RF de puissance

Author : Juan-Mari Collantes
Publisher :
ISBN 13 :
Total Pages : 177 pages
Book Rating : 4.:/5 (799 download)

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Book Synopsis Modélisation des transistors Mosfets pour les applications RF de puissance by : Juan-Mari Collantes

Download or read book Modélisation des transistors Mosfets pour les applications RF de puissance written by Juan-Mari Collantes and published by . This book was released on 1996 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'OBJECTIF DE CE TRAVAIL A ETE LE DEVELOPPEMENT D'UN MODELE ELECTRIQUE NON LINEAIRE DES TRANSISTORS MOSFET POUR DES APPLICATIONS DE PUISSANCE DANS LE DOMAINE DES RADIOFREQUENCES. NOTRE DEMARCHE DE MODELISATION EST FONDEE SUR UNE CARACTERISATION PRECISE ET COHERENTE DU COMPOSANT. AINSI, CETTE CARACTERISATION EST CONSTITUEE DE MESURES CONVECTIVES I-V ET DE MESURES DE PARAMETRES S, EFFECTUEES SOUS-CONDITIONS PULSEES ET COMPRENANT TOUT LE DOMAINE DE FONCTIONNEMENT. LA COMPLEXITE DU FONCTIONNEMENT LARGE-SIGNAL DU MOSFET EST PRISE EN COMPTE PAR L'UTILISATION DE QUATRE NON LINEARITES (UNE SOURCE DE COURANT ET TROIS CAPACITES INTRINSEQUES) DEPENDANT DES DEUX TENSIONS DE COMMANDE. LA MODELISATION DE CES NON LINEARITES EST REALISEE DE MANIERE INDIVIDUELLE PAR UNE REPRESENTATION TABULAIRE A L'AIDE DES B-SPLINES BICUBIQUES. UNE VALIDATION EXHAUSTIVE DU MODELE NON LINEAIRE EST DEVELOPPEE POUR UN TRANSISTOR LDMOS. CETTE VALIDATION EST FONDEE SUR LA CARACTERISATION EXPERIMENTALE FORT-SIGNAL DU COMPOSANT A L'AIDE D'UN SYSTEME DE MESURE DU TYPE LOAD-PULL. ELLE COMPREND TOUTES LES CONDITIONS DE FONCTIONNEMENT CORRESPONDANT AUX APPLICATIONS COURANTES DU TRANSISTOR

Modèle facile d'emploi de transistor bipolaire pour la CAO en électronique de puissance

Author : Khadidja Benchaib
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (494 download)

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Book Synopsis Modèle facile d'emploi de transistor bipolaire pour la CAO en électronique de puissance by : Khadidja Benchaib

Download or read book Modèle facile d'emploi de transistor bipolaire pour la CAO en électronique de puissance written by Khadidja Benchaib and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: CE MEMOIRE TRAITE DE LA MODELISATION DES TRANSISTORS BIPOLAIRES SILICIUM EN REGIME STATIQUE ET EN REGIME DYNAMIQUE. UN NOUVEAU MODELE UNIDIMENSIONNEL ET A CONSTANTE LOCALISEE DE TYPE COMPACT EST PROPOSE POUR SIMULER LE FONCTIONNEMENT EN COMMUTATION DES TRANSISTORS BIPOLAIRES DE PUISSANCE. CE MODELE EST A LA FOIS SIMPLE ET FACILE A METTRE EN UVRE PAR UN CONCEPTEUR DE CIRCUIT. SON UTILISATION EST TRES AVANTAGEUSE, CAR IL NE FAIT INTERVENIR QUE PEU DE PARAMETRES QUI PEUVENT, AVEC DES MOYENS INFORMTIQUES LEGERS, FACILEMENT ETRE IDENTIFIES A PARTIR DES FEUILLES DE SPECIFICATION DES FABRICANTS DE COMPOSANTS. LE DIMENSIONNEMENT DES ELEMENTS DU SCHEMA EQUIVALENT SIMPLIFIE STATIQUE EST REALISE A PARTIR DE L'EXPRESSION DU GAIN EN COURANT COLLECTEUR. EN FONCTIONNEMENT DYNAMIQUE, LE MODELE EST COMPLETE PAR UNE CAPACITE BASE-EMETTEUR EQUIVALENTE, REPRESENTANT LA CHARGE STOCKEE DANS LA BASE ELECTRIQUE. LE MODELE FINAL, EST ALORS BIEN ADAPTE A L'ETUDE ET A LA CARACTERISATION DU TRANSISTOR BIPOLAIRE DE PUISSANCE ET PERMET D'EN SIMULER LE FONCTIONNEMENT EN COMMUTATION. LA BONNE CONCORDANCE ENTRE LES COMPORTEMENTS MESURES ET SIMULES DES ECHANTILLONS TESTES, JUSTIFIE L'APPROCHE CHOISIE

ICREEC 2019

Author : Ahmed Belasri
Publisher : Springer Nature
ISBN 13 : 9811554447
Total Pages : 659 pages
Book Rating : 4.8/5 (115 download)

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Book Synopsis ICREEC 2019 by : Ahmed Belasri

Download or read book ICREEC 2019 written by Ahmed Belasri and published by Springer Nature. This book was released on 2020-06-10 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.

Smart Energy Empowerment in Smart and Resilient Cities

Author : Mustapha Hatti
Publisher : Springer Nature
ISBN 13 : 3030372073
Total Pages : 703 pages
Book Rating : 4.0/5 (33 download)

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Book Synopsis Smart Energy Empowerment in Smart and Resilient Cities by : Mustapha Hatti

Download or read book Smart Energy Empowerment in Smart and Resilient Cities written by Mustapha Hatti and published by Springer Nature. This book was released on 2019-12-24 with total page 703 pages. Available in PDF, EPUB and Kindle. Book excerpt: International Conference on Artificial Intelligence in Renewable Energetic Systems, IC-AIRES2019, 26-28 November 2019, Taghit-Bechar, Algeria. The challenges of the energy transition in the medium term lead to numerous technological breakthroughs in the areas of production, optimal distribution and the rational use of energy and renewable energy (energy efficiency and optimization of consumption, massive electrification, monitoring and control energy systems, cogeneration and energy recovery processes, new and renewable energies, etc.). The fall in the cost of renewable energies and the desire for a local control of energy production are today calling for a profound change in the electricity system. Local authorities are at the center of energy developments by taking into account the local nature of certain energy systems, heat networks, geothermal energy, waste heat recovery, and electricity generation from household waste. On the other side, digital sciences are at the heart of connected objects and intelligent products that combine information processing and communication capabilities with their environment. Digital technology is at the center of new systems engineering approaches (3D modeling, virtualization, simulation, digital prototyping, etc.) for the design and development of intelligent systems. The book deals with various topics ranging from the design, development and maintenance of energy production systems, transport, distribution or storage of energy, optimization of energy efficiency, especially in the use of energy. innovation in the fields of energy production from renewable energies, management of energy networks: electricity, fluids, gas, district heating, energy storage modes: battery, super-capacitors , overseeing energy supply through supervision, control and diagnosis, risk management, as well as the design and management of smart grids: microgrid, smartgrid. This imposes the model of energy empowerment in the advent of smart cities. Empower the world’s most vulnerable energy-poor citizens and establish growing and vibrant socioeconomic communities, by academics, students in engineering and data computing from around the world who have chosen an academic path leading to an electric power and energy engineering and artificial intelligence to advancing technology for the advantage of humanity.

Introduction to ISDN

Author :
Publisher : Wiley-Blackwell
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.:/5 ( download)

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Book Synopsis Introduction to ISDN by :

Download or read book Introduction to ISDN written by and published by Wiley-Blackwell. This book was released on 1987 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Renewable Energy for Smart and Sustainable Cities

Author : Mustapha Hatti
Publisher : Springer
ISBN 13 : 303004789X
Total Pages : 571 pages
Book Rating : 4.0/5 (3 download)

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Book Synopsis Renewable Energy for Smart and Sustainable Cities by : Mustapha Hatti

Download or read book Renewable Energy for Smart and Sustainable Cities written by Mustapha Hatti and published by Springer. This book was released on 2018-11-23 with total page 571 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book features cutting-edge research presented at the second international conference on Artificial Intelligence in Renewable Energetic Systems, IC-AIRES2018, held on 24–26 November 2018, at the High School of Commerce, ESC-Koléa in Tipaza, Algeria. Today, the fundamental challenge of integrating renewable energies into the design of smart cities is more relevant than ever. While based on the advent of big data and the use of information and communication technologies, smart cities must now respond to cross-cutting issues involving urban development, energy and environmental constraints; further, these cities must also explore how they can integrate more sustainable energies. Sustainable energies are a major determinant of smart cities’ longevity. From an environmental and technological standpoint, these energies offer an optimal power supply to the electric network while creating significantly less pollution. This requires flexibility, i.e., the availability of supply and demand. The end goal of any smart city is to improve the quality of life for all citizens (both in the city and in the countryside) in a way that is sustainable and respectful of the environment. This book encourages the reader to engage in the preservation of our environment, every moment, every day, so as to help build a clean and healthy future, and to think of the future generations who will one day inherit our planet. Further, it equips those whose work involves energy systems and those engaged in modelling artificial intelligence to combine their expertise for the benefit of the scientific community and humanity as a whole.

Querying Graphs

Author : Angela Bonifati
Publisher : Springer Nature
ISBN 13 : 3031018648
Total Pages : 166 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis Querying Graphs by : Angela Bonifati

Download or read book Querying Graphs written by Angela Bonifati and published by Springer Nature. This book was released on 2022-06-01 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Graph data modeling and querying arises in many practical application domains such as social and biological networks where the primary focus is on concepts and their relationships and the rich patterns in these complex webs of interconnectivity. In this book, we present a concise unified view on the basic challenges which arise over the complete life cycle of formulating and processing queries on graph databases. To that purpose, we present all major concepts relevant to this life cycle, formulated in terms of a common and unifying ground: the property graph data model—the pre-dominant data model adopted by modern graph database systems. We aim especially to give a coherent and in-depth perspective on current graph querying and an outlook for future developments. Our presentation is self-contained, covering the relevant topics from: graph data models, graph query languages and graph query specification, graph constraints, and graph query processing. We conclude by indicating major open research challenges towards the next generation of graph data management systems.

Quantum Communications and Cryptography

Author : Alexander V. Sergienko
Publisher : CRC Press
ISBN 13 : 1420026607
Total Pages : 248 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Quantum Communications and Cryptography by : Alexander V. Sergienko

Download or read book Quantum Communications and Cryptography written by Alexander V. Sergienko and published by CRC Press. This book was released on 2018-10-03 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: All current methods of secure communication such as public-key cryptography can eventually be broken by faster computing. At the interface of physics and computer science lies a powerful solution for secure communications: quantum cryptography. Because eavesdropping changes the physical nature of the information, users in a quantum exchange can easily detect eavesdroppers. This allows for totally secure random key distribution, a central requirement for use of the one-time pad. Since the one-time pad is theoretically proven to be undecipherable, quantum cryptography is the key to perfect secrecy. Quantum Communications and Cryptography is the first comprehensive review of the past, present, and potential developments in this dynamic field. Leading expert contributors from around the world discuss the scientific foundations, experimental and theoretical developments, and cutting-edge technical and engineering advances in quantum communications and cryptography. The book describes the engineering principles and practical implementations in a real-world metropolitan network as well as physical principles and experimental results of such technologies as entanglement swapping and quantum teleportation. It also offers the first detailed treatment of quantum information processing with continuous variables. Technologies include both free-space and fiber-based communications systems along with the necessary protocols and information processing approaches. Bridging the gap between physics and engineering, Quantum Communications and Cryptography supplies a springboard for further developments and breakthroughs in this rapidly growing area.

Organic Solid-State Lasers

Author : Sébastien Forget
Publisher : Springer
ISBN 13 : 3642367054
Total Pages : 179 pages
Book Rating : 4.6/5 (423 download)

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Book Synopsis Organic Solid-State Lasers by : Sébastien Forget

Download or read book Organic Solid-State Lasers written by Sébastien Forget and published by Springer. This book was released on 2013-07-03 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic lasers are broadly tunable coherent sources, potentially compact, convenient and manufactured at low-costs. Appeared in the mid 60’s as solid-state alternatives for liquid dye lasers, they recently gained a new dimension after the demonstration of organic semiconductor lasers in the 90's. More recently, new perspectives appeared at the nanoscale, with organic polariton and surface plasmon lasers. After a brief reminder to laser physics, a first chapter exposes what makes organic solid-state organic lasers specific. The laser architectures used in organic lasers are then reviewed, with a state-of-the-art review of the performances of devices with regard to output power, threshold, lifetime, beam quality etc. A survey of the recent trends in the field is given, highlighting the latest developments with a special focus on the challenges remaining for achieving direct electrical pumping of organic semiconductor lasers. A last chapter covers the applications of organic solid-state lasers.

Local Approximation Techniques in Signal and Image Processing

Author : Vladimir I︠A︡kovlevich Katkovnik
Publisher : SPIE-International Society for Optical Engineering
ISBN 13 :
Total Pages : 584 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Local Approximation Techniques in Signal and Image Processing by : Vladimir I︠A︡kovlevich Katkovnik

Download or read book Local Approximation Techniques in Signal and Image Processing written by Vladimir I︠A︡kovlevich Katkovnik and published by SPIE-International Society for Optical Engineering. This book was released on 2006 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with a wide class of novel and efficient adaptive signal processing techniques developed to restore signals from noisy and degraded observations. These signals include those acquired from still or video cameras, electron microscopes, radar, X-rays, or ultrasound devices, and are used for various purposes, including entertainment, medical, business, industrial, military, civil, security, and scientific. In many cases useful information and high quality must be extracted from the imaging. However, often raw signals are not directly suitable for this purpose and must be processed in some way. Such processing is called signal reconstruction. This book is devoted to a recent and original approach to signal reconstruction based on combining two independent ideas: local polynomial approximation and the intersection of confidence interval rule.

Flexoelectricity in Liquid Crystals

Author : Agnes Buka
Publisher : World Scientific
ISBN 13 : 1848167997
Total Pages : 299 pages
Book Rating : 4.8/5 (481 download)

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Book Synopsis Flexoelectricity in Liquid Crystals by : Agnes Buka

Download or read book Flexoelectricity in Liquid Crystals written by Agnes Buka and published by World Scientific. This book was released on 2013 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book intends to give a state-of-the-art overview of flexoelectricity, a linear physical coupling between mechanical (orientational) deformations and electric polarization, which is specific to systems with orientational order, such as liquid crystals. Chapters written by experts in the field shed light on theoretical as well as experimental aspects of research carried out since the discovery of flexoelectricity. Besides a common macroscopic (continuum) description the microscopic theory of flexoelectricity is also addressed. Electro-optic effects due to or modified by flexoelectricity as well as various (direct and indirect) measurement methods are discussed. Special emphasis is given to the role of flexoelectricity in pattern-forming instabilities. While the main focus of the book lies in flexoelectricity in nematic liquid crystals, peculiarities of other mesophases (bent-core systems, cholesterics, and smectics) are also reviewed. Flexoelectricity has relevance to biological (living) systems and can also offer possibilities for technical applications. The basics of these two interdisciplinary fields are also summarized.

Lightning Protection Guidelines for Aerospace Vehicles

Author : C. C. Goodloe
Publisher :
ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Lightning Protection Guidelines for Aerospace Vehicles by : C. C. Goodloe

Download or read book Lightning Protection Guidelines for Aerospace Vehicles written by C. C. Goodloe and published by . This book was released on 1999 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Graphite Intercalation Compounds II

Author : Hartmut Zabel
Publisher : Springer Science & Business Media
ISBN 13 : 3642844790
Total Pages : 442 pages
Book Rating : 4.6/5 (428 download)

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Book Synopsis Graphite Intercalation Compounds II by : Hartmut Zabel

Download or read book Graphite Intercalation Compounds II written by Hartmut Zabel and published by Springer Science & Business Media. This book was released on 2013-03-07 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research on graphite intercalation compounds often acts as a forerunner for research in other sciences. For instance, the concept of staging, which is fundamental to graphite intercalation compounds, is also relevant to surface science in connection with adsorbates on metal surfaces and to high-temperature superconducting oxide layer materials. Phonon-folding and mode-splitting effects are not only basic to graphite intercalation compounds but also to polytypical systems such as supercon ductors, superlattices, and metal and semiconductor superlattices. Charge transfer effects playa tremendously important role in many areas, and they can be most easily and fundamentally studied with intercalated graphite. This list could be augmented with many more examples. The important message, however, is that graphite inter calation compounds represent a class of materials that not only can be used for testing a variety of condensed-matter concepts, but also stimulates new ideas and approaches. This volume is the second of a two-volume set. The first volume addressed the structural and dynamical aspects of graphite intercalation compounds, together with the chemistry and intercalation of new compounds. This second volume provides an up-to-date status report from expert researchers on the transport, magnetic, elec tronic and optical properties ofthis unique class of materials. The band-structure cal culations of the various donor and acceptor compounds are discussed in depth, and detailed reviews are provided ofthe experimental verification ofthe electronic struc ture in terms of their photoemission spectra and optical properties.