Download or read book ETUDE ET REALISATION D UN SPECTROSCOPE POUR CATHODOLUMINESCENCE EN MICROSCOPIE ELECTRONIQUE A BALAYAGE ET APPLICATIONS AUX SEMICONDUCTEURS A LARGE BANDE INTERDITE written by J.. SEMO and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: POUR OBTENIR SIMULTANEMENT DES INFORMATIONS SUR LA LOCALISATION DE L'EMISSION LUMINEUSE ET SON ENERGIE, ON A CONCU UN SPECTROSCOPE OPTIQUE TRAVAILLANT DANS LA GAMME DES LONGUEURS D'ONDES COMPRISES ENTRE 4600 ET 10000 A ET ADAPTABLE A LA COLONNE D'UN MICROSCOPE ELECTRONIQUE A BALAYAGE CAMECA. RESULTATS OBTENUS SUR LA DIFFUSION DE L'ALUMINIUM ET DU GALLIUM DANS DES CRISTAUX DE SELENIURE DE ZINC. APPLICATIONS DU SPECTROSCOPE A L'ETUDE DES SEMICONDUCTEURS A LARGE BANDE INTERDITE

Download or read book Revue de physique appliqu e written by and published by . This book was released on 1974 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin de Min ralogie written by and published by . This book was released on 1978 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Etude et r alisation d un microscope lectronique balayage adapt l examen des ph nom nes de cathodoluminescence written by Hagop Ohanessian and published by . This book was released on 1970 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book tude de la cathodoluminescence par microscopie lectronique balayage written by Pierre Pinard and published by . This book was released on 1964 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microscopie Electronique a Balayage written by and published by Ed. Techniques Ingénieur. This book was released on with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Utilisation du mode induit en microscopie lectronique balayage pour l tude des semiconducteurs written by Raymond Chirat (auteur d'une thèse de physique).) and published by . This book was released on 1973 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Utilisation du mode induit en microscopie lectronique balayage pour l tude des semiconducteurs written by Raymond Chirat and published by . This book was released on 1973 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microscopie et spectroscopie lectroniques Application YBa2Cu3O7 delta written by Christine Grigis and published by . This book was released on 1997 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA MICROSCOPIE ELECTRONIQUE EN TRANSMISSION (MET) AVEC SES DERNIERS DEVELOPPEMENTS EN IMAGERIE HAUTE RESOLUTION (MEHR) ET EN SPECTROSCOPIE DE PERTES D'ENERGIE D'ELECTRONS (EELS) A ETE EXPLOITEE ET DEVELOPPEE POUR L'ETUDE DE L'ORDRE STRUCTURAL, DE LA COMPOSITION CHIMIQUE ET DE L'ETAT ELECTRONIQUE JUSQU'A L'ECHELLE ATOMIQUE DE COMPOSES Y#1BA#2CU#3O#7#-#. DANS LE CAS DE FILMS MINCES ELABORES PAR DEPOT CHIMIQUE EN PHASE VAPEUR A PARTIR DE COMPOSES ORGANOMETALLIQUES SUR DIFFERENTS SUBSTRATS ET POUR PLUSIEURS CONDITIONS D'ELABORATION, L'ETUDE DE LA TOPOLOGIE EN MET PUIS DE L'ARRANGEMENT ATOMIQUE LOCAL EN MEHR A PERMIS DE VISUALISER DIRECTEMENT L'ENSEMBLE DES IMPERFECTIONS STRUCTURALES ET/OU CHIMIQUES AU SEIN DU FILM ET A L'INTERFACE AVEC LE SUBSTRAT JUSQU'A L'ECHELLE DE LA LONGUEUR DE COHERENCE. DES CORRELATIONS AVEC LES GRANDEURS PHYSIQUES IMPORTANTES POUR LES APPLICATIONS A L'ELECTRONIQUE SUPRACONDUCTRICE ONT ETE PROPOSEES. EN EELS, NOUS AVONS DEVELOPPE L'ETUDE PARALLELE ET COMPLEMENTAIRE DES SIGNATURES ASSOCIEES A L'EXCITATION DES ELECTRONS FAIBLEMENT LIES ET DES ELECTRONS DES NIVEAUX ATOMIQUES PROFONDS. NOUS AVONS MIS AU POINT UN LOGICIEL D'ANALYSE A PARTIR D'UN TRAITEMENT DE KRAMERS-KRONIG DU SIGNAL AFIN D'ACCEDER A DES INFORMATIONS SUR LA DENSITE D'ETATS JOINTS ENTRE LES BANDES DE VALENCE ET DE CONDUCTION. AVEC UNE RESOLUTION D'ANALYSE D'UN ELECTRON-VOLT, NOUS AVONS ANALYSE LES STRUCTURES FINES PRES DES SEUILS D'EXCITATION O-K ET CU-L#2#,#3 ET CORRELE LES RESULTATS AUX ETATS INOCCUPES DU DIAGRAMME DE STRUCTURE DE BANDE. NOUS AVONS AUSSI EXPLOITE LES SIGNATURES DES PROCESSUS D'INTERACTION ELECTRONIQUE EN FONCTION DE LA QUANTITE DE MOUVEMENT TRANSFEREE CONTROLEE DANS L'EXPERIENCE EELS. L'APPLICATION A Y#1BA#2CU#3O#7#-# A PERMIS D'EVALUER , NOTAMMENT A PARTIR DE LA SIGNATURE DU PLASMON DE VOLUME, AINSI QUE DE REVELER L'ANISOTROPIE DES DISTRIBUTIONS ELECTRONIQUES ENTRE LE PLAN (A,B) ET LA DIRECTION C DE LA STRUCTURE ORTHORHOMBIQUE DE Y#1BA#2CU#3O#7#-#, A PARTIR DE L'ETUDE DU SEUIL O-K.

Download or read book MICROSCOPIE ET SPECTROSCOPIE ELECTRONIQUES written by CHRISTINE.. GRIGIS and published by . This book was released on 1997 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA MICROSCOPIE ELECTRONIQUE EN TRANSMISSION (MET) AVEC SES DERNIERS DEVELOPPEMENTS EN IMAGERIE HAUTE RESOLUTION (MEHR) ET EN SPECTROSCOPIE DE PERTES D'ENERGIE D'ELECTRONS (EELS) A ETE EXPLOITEE ET DEVELOPPEE POUR L'ETUDE DE L'ORDRE STRUCTURAL, DE LA COMPOSITION CHIMIQUE ET DE L'ETAT ELECTRONIQUE JUSQU'A L'ECHELLE ATOMIQUE DE COMPOSES Y#1BA#2CU#3O#7#-#. DANS LE CAS DE FILMS MINCES ELABORES PAR DEPOT CHIMIQUE EN PHASE VAPEUR A PARTIR DE COMPOSES ORGANOMETALLIQUES SUR DIFFERENTS SUBSTRATS ET POUR PLUSIEURS CONDITIONS D'ELABORATION, L'ETUDE DE LA TOPOLOGIE EN MET PUIS DE L'ARRANGEMENT ATOMIQUE LOCAL EN MEHR A PERMIS DE VISUALISER DIRECTEMENT L'ENSEMBLE DES IMPERFECTIONS STRUCTURALES ET/OU CHIMIQUES AU SEIN DU FILM ET A L'INTERFACE AVEC LE SUBSTRAT JUSQU'A L'ECHELLE DE LA LONGUEUR DE COHERENCE. DES CORRELATIONS AVEC LES GRANDEURS PHYSIQUES IMPORTANTES POUR LES APPLICATIONS A L'ELECTRONIQUE SUPRACONDUCTRICE ONT ETE PROPOSEES. EN EELS, NOUS AVONS DEVELOPPE L'ETUDE PARALLELE ET COMPLEMENTAIRE DES SIGNATURES ASSOCIEES A L'EXCITATION DES ELECTRONS FAIBLEMENT LIES ET DES ELECTRONS DES NIVEAUX ATOMIQUES PROFONDS. NOUS AVONS MIS AU POINT UN LOGICIEL D'ANALYSE A PARTIR D'UN TRAITEMENT DE KRAMERS-KRONIG DU SIGNAL AFIN D'ACCEDER A DES INFORMATIONS SUR LA DENSITE D'ETATS JOINTS ENTRE LES BANDES DE VALENCE ET DE CONDUCTION. AVEC UNE RESOLUTION D'ANALYSE D'UN ELECTRON-VOLT, NOUS AVONS ANALYSE LES STRUCTURES FINES PRES DES SEUILS D'EXCITATION O-K ET CU-L#2#,#3 ET CORRELE LES RESULTATS AUX ETATS INOCCUPES DU DIAGRAMME DE STRUCTURE DE BANDE. NOUS AVONS AUSSI EXPLOITE LES SIGNATURES DES PROCESSUS D'INTERACTION ELECTRONIQUE EN FONCTION DE LA QUANTITE DE MOUVEMENT TRANSFEREE CONTROLEE DANS L'EXPERIENCE EELS. L'APPLICATION A Y#1BA#2CU#3O#7#-# A PERMIS D'EVALUER , NOTAMMENT A PARTIR DE LA SIGNATURE DU PLASMON DE VOLUME, AINSI QUE DE REVELER L'ANISOTROPIE DES DISTRIBUTIONS ELECTRONIQUES ENTRE LE PLAN (A,B) ET LA DIRECTION C DE LA STRUCTURE ORTHORHOMBIQUE DE Y#1BA#2CU#3O#7#-#, A PARTIR DE L'ETUDE DU SEUIL O-K.

Download or read book Spectromicroscopie infrarouge l chelle nanom trique written by Céline Mayet and published by . This book was released on 2010 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt: La spectromicroscopie infrarouge est une technique d'analyse extrêmement performante capable à la fois de caractériser des composés chimiques par leurs bandes d'absorption et de les localiser spatialement grâce à un microscope. L'expérience AFMIR (Atomic Force Microscope InfraRed) est une méthode récente et originale de spectromicroscopie infrarouge sub-Iongueur d'onde qui couple un laser infrarouge pulsé accordable et un microscope à force atomique (AFM). En utilisant l'effet photothermique, elle permet de faire de la spectroscopie infrarouge « ultra locale» et de réaliser des cartographies chimiques avec une très bonne résolution latérale (quelques dizaines de nanomètres). Au cours de cette thèse, un travail de modélisation a été mené afin d'estimer la résolution spatiale de la technique AFMIR et de comprendre tous les phénomènes physiques qu'elle met enjeu. Parallèlement à cette étude théorique, une étape de développement instrumental a été nécessaire pour adapter l'expérience à des études en milieu liquide et permettre l'analyse d'échantillons biologiques vivants. Enfin, trois problématiques ont été abordées : infection de la bactérie Escherichia coli par le phage T5, production du polymère PHB par la bactérie Rhodobacter capsulatus et détermination de l'organite cible d'une hormone pour une lignée cellulaire hormono-indépendante du cancer du sein. L'ensemble des résultats a été confirmé avec des mesures de microscopie électronique en transmission et de spectroscopie d'absorption infrarouge classique. La technique AFMIR est maintenant opérationnelle pour être proposée à d'autres chercheurs du domaine de la biologie.

Download or read book R alisation et utilisation d un microscope lectronique balayage par transmission written by Jacques Baudry and published by . This book was released on 1977 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: REALISATION D'UN MICROSCOPE A BALAYAGE PAR TRANSMISSION FONCTIONNANT JUSQU'A 50 KV AVEC UN CANON A EMISSION DE CHAMP ET UNE SEULE LENTILLE. RESOLUTION #20 A. ETUDE DES DEFAUTS CRISTALLINS EN FONCTION DES ANGLES D'ILLUMINATION ET DE COLLECTION. ETUDE DES DEFAUTS SIMULTANEMENT EN REFLEXION ET TRANSMISSION SUR LA MEME ZONE. CLICHES DE DIFFRACTION SUR DES PETITES ZONES. IMAGES D'ECHANTILLONS MASSIFS AVEC LES ELECTRONS FILTRES REFLECHIS SOUS UN ANGLE RASANT.

Download or read book III Nitride Semiconductors written by M.O. Manasreh and published by Elsevier. This book was released on 2000-12-06 with total page 463 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research advances in III-nitride semiconductor materials and device have led to an exponential increase in activity directed towards electronic and optoelectronic applications. There is also great scientific interest in this class of materials because they appear to form the first semiconductor system in which extended defects do not severely affect the optical properties of devices. The volume consists of chapters written by a number of leading researchers in nitride materials and device technology with the emphasis on the dopants incorporations, impurities identifications, defects engineering, defects characterization, ion implantation, irradiation-induced defects, residual stress, structural defects and phonon confinement. This unique volume provides a comprehensive review and introduction of defects and structural properties of GaN and related compounds for newcomers to the field and stimulus to further advances for experienced researchers. Given the current level of interest and research activity directed towards nitride materials and devices, the publication of the volume is particularly timely. Early pioneering work by Pankove and co-workers in the 1970s yielded a metal-insulator-semiconductor GaN light-emitting diode (LED), but the difficulty of producing p-type GaN precluded much further effort. The current level of activity in nitride semiconductors was inspired largely by the results of Akasaki and co-workers and of Nakamura and co-workers in the late 1980s and early 1990s in the development of p-type doping in GaN and the demonstration of nitride-based LEDs at visible wavelengths. These advances were followed by the successful fabrication and commercialization of nitride blue laser diodes by Nakamura et al at Nichia. The chapters contained in this volume constitutes a mere sampling of the broad range of research on nitride semiconductor materials and defect issues currently being pursued in academic, government, and industrial laboratories worldwide.

Download or read book ZnO Thin Films written by Paolo Mele and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Zinc oxide (ZnO) is an n-type semiconductor with versatile applications such as optical devices in ultraviolet region, piezoelectric transducers, transparent electrode for solar cells and gas sensors. This book "ZnO Thin Films: Properties, Performance and Applications" gives a deep insight in the intriguing science of zinc oxide thin films. It is devoted to cover the most recent advances and reviews the state of the art of ZnO thin films applications involving energy harvesting, microelectronics, magnetic devices, photocatalysis, photovoltaics, optics, thermoelectricity, piezoelectricity, electrochemistry, temperature sensing. It serves as a fundamental information source on the techniques and methodologies involved in zinc oxide thin films growth, characterization, post-deposition plasma treatments and device processing. This book will be invaluable to the experts to consolidate their knowledge and provide insight and inspiration to beginners wishing to learn about zinc oxide thin films.

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.

Download or read book Diffusion in Materials DIMAT 2011 written by Igor Bezverkhyy and published by Trans Tech Publications Ltd. This book was released on 2012-04-12 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Conference on Diffusion in Materials (DIMAT) is the benchmark conference series for diffusion in solids. DIMAT 2011 was organized by the University of Bourgogne in association with CNRS, Dijon (France). The conference showcased new results concerning theoretical tools as well as applied research approaches. Diffusion processes affect all types of materials: nanomaterials, materials for energy, metallurgy, glasses and ceramics, but each requires its own numerical tools. Volume is indexed by Thomson Reuters CPCI-S (WoS). This volume comprises most of the contributions presented at DIMAT 2011: 4 plenary lectures delivered by famous high-level scientists plus 88 contributions in the form of keynote lectures, talks and posters.

Download or read book Applied Mineralogy in the Mining Industry written by W. Petruk and published by Elsevier. This book was released on 2000-11-29 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: Techniques of performing applied mineralogy investigations, and applications and capabilities of recently developed instruments for measuring mineral properties are explored in this book intended for practicing applied mineralogists, students in mineralogy and metallurgy, and mineral processing engineers. The benefits of applied mineralogy are presented by using in-depth applied mineralogy studies on base metal ores, gold ores, porphyry copper ores, iron ores and industrial minerals as examples. The chapter on base metal ores includes a discussion on the effects of liberation, particle sizes and surfaces coatings of Pb, Cu, Fe, Ca and So4- on the recoveries of sphalerite, galena and chalcopyrite. The chapter on gold discusses various methods of determining the quantities of gold in different minerals, including 'invisible' gold in pyrite and arsenopyrite, so that a balance of the distribution of gold among the minerals can be calculated. This book also discusses the roles of pyrite, oxygen, moisture and bacterial (thiobacillus ferrooxidans) on reactions that produce acidic drainage from tailings piles, and summarizes currently used and proposed methods of remediation of acidic drainage.