Download or read book Etude des m canismes de l ablation laser et r alisation de couches et multicouches supraconductrices written by Catherine Villard (auteure en physique).) and published by . This book was released on 1992 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nous avons realise au cours de ce travail de these un montage experimental d'elaboration de couches minces par ablation laser. Cette experience nous a tout d'abord permis de mener une etude des mecanismes de l'interaction laser-matiere. L'objectif de cette premiere partie de notre travail a ete de maitriser les aspects de morphologie de surface et de transfert de matiere caracterisant notre procede de depot par ablation laser. Nous avons ensuite aborde l'elaboration de couches minces supraconductrices, en nous interessant particulierement aux mecanismes de croissance de films d'ybco. A l'issue de ce travail d'optimisation des proprietes de nos couches minces, nous avons obtenu des caracteristiques supraconductrices et structurales nous ouvrant la voie de l'elaboration d'empilements multicouches. Nous avons mene une premiere etude sur des structures ybco/lsco, qui a souleve d'interessants problemes d'hetero-epitaxie des couches minces. Ces resultats mettent en evidence l'interet de la methode d'elaboration par ablation laser dans la maitrise de la croissance de couches minces

Download or read book Etude des m canismes de l ablation laser et r alisation de couches et multicouches supraconductrices written by Catherine Chabaud-Villard and published by . This book was released on 1992 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: NOUS AVONS REALISE AU COURS DE CE TRAVAIL DE THESE UN MONTAGE EXPERIMENTAL D'ELABORATION DE COUCHES MINCES PAR ABLATION LASER. CETTE EXPERIENCE NOUS A TOUT D'ABORD PERMIS DE MENER UNE ETUDE DES MECANISMES DE L'INTERACTION LASER-MATIERE. L'OBJECTIF DE CETTE PREMIERE PARTIE DE NOTRE TRAVAIL A ETE DE MAITRISER LES ASPECTS DE MORPHOLOGIE DE SURFACE ET DE TRANSFERT DE MATIERE CARACTERISANT NOTRE PROCEDE DE DEPOT PAR ABLATION LASER. NOUS AVONS ENSUITE ABORDE L'ELABORATION DE COUCHES MINCES SUPRACONDUCTRICES, EN NOUS INTERESSANT PARTICULIEREMENT AUX MECANISMES DE CROISSANCE DE FILMS D'YBCO. A L'ISSUE DE CE TRAVAIL D'OPTIMISATION DES PROPRIETES DE NOS COUCHES MINCES, NOUS AVONS OBTENU DES CARACTERISTIQUES SUPRACONDUCTRICES ET STRUCTURALES NOUS OUVRANT LA VOIE DE L'ELABORATION D'EMPILEMENTS MULTICOUCHES. NOUS AVONS MENE UNE PREMIERE ETUDE SUR DES STRUCTURES YBCO/LSCO, QUI A SOULEVE D'INTERESSANTS PROBLEMES D'HETERO-EPITAXIE DES COUCHES MINCES. CES RESULTATS METTENT EN EVIDENCE L'INTERET DE LA METHODE D'ELABORATION PAR ABLATION LASER DANS LA MAITRISE DE LA CROISSANCE DE COUCHES MINCES

Download or read book Etude de Couches Minces D pos es Par Ablation Laser written by Corneliu Ghica and published by Omniscriptum. This book was released on 2011-06 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce livre contient une s rie de r sultats des recherches que j'ai d velopp s pendant mon doctorat en cotutelle la fin des ann es '90 au sujet d'un mat riau qui fait partie de toute une classe de mat riaux qui suscitent un tr s vif int r t du point de vue fondamental et applicatif: les mat riaux magn tor sistance colossale. Du point de vue fondamental, les efforts se sont concentr s autour des m canismes physiques responsables de l'intensit de l'effet. Bien que, qualitativement, l'explication de l'effet semblait avoir t donn e d j dans les ann es '50 par le m canisme du double change, du point de vue quantitatif tout se complique. Les valeurs de l'effet en soi et l'h t rog n it des r sultats rapport s par les diff rents groupes de chercheurs d montrent l'importance d'autres facteurs comme la structure cristalline, la morphologie des chantillons, la stoechiom trie en l'oxyg ne. Dans sa premi re partie, le livre concentre quelques l ments th oriques sur le mat riau lui-m me et sur les techniques exp rimentales utilis es au cours des recherches. La deuxi me partie est d di e aux r sultats obtenus pendant trois ann es de th se doctorale.

Download or read book Government Reports Annual Index written by and published by . This book was released on 1994 with total page 1754 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Laser Ablation written by Tatiana Itina and published by BoD – Books on Demand. This book was released on 2017-12-21 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shortly after the demonstration of the first laser, the most intensely studied theoretical topics dealt with laser-matter interactions. Many experiments were undertaken to clarify the major ablation mechanisms. At the same time, numerous theoretical studies, both analytical and numerical, were proposed to describe these interactions. These studies paved the ways toward the development of numerous laser applications, ranging from laser micro- and nanomachining to material analysis, nanoparticle and nanostructure formation, thin-film deposition, etc. Recently, more and more promising novel fields of laser applications have appeared, including biomedicine, catalysis, photovoltaic cells, etc. This book intends to provide the reader with a comprehensive overview of the current state of the art in laser ablation, from its fundamental mechanisms to novel applications.

Download or read book Laser Ablation written by E. Fogarassy and published by Newnes. This book was released on 2012-12-02 with total page 943 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the proceedings of the largest conference ever held on this subject. The strong interest in this field is largely due to the fact that both fundamental aspects of laser-surface interaction as well as applied techniques for thin film generation and patterning were treated in detail by experts from around the world.

Download or read book Laser Ablation and its Applications written by Claude Phipps and published by Springer. This book was released on 2007-01-17 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser ablation describes the interaction of intense optical fields with matter, in which atoms are selectively driven off by thermal or nonthermal mechanisms. This is the first book that combines the most recent results in this rapidly advancing field with authoritative treatment of laser ablation and its applications, including the physics of high-power laser-matter interaction.

Download or read book Laser Ablation written by John C. Miller and published by Springer Science & Business Media. This book was released on 2013-11-09 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser Ablation provides a broad picture of the current understanding of laser ablation and its many applications, from the views of key contributors to the field. Discussed are in detail the electronic processes in laser ablation of semiconductors and insulators, the post-ionization of laser-desorbed biomolecules, Fourier-transform mass spectroscopy, the interaction of laser radiation with organic polymers, laser ablation and optical surface damage, laser desorption/ablation with laser detection, and laser ablation of superconducting thin films.

Download or read book Laser Ablation of Electronic Materials written by Eric Fogarassy and published by North Holland. This book was released on 1992 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: The contributions in this volume focus on the main directions that ablation has taken in recent years: basic mechanisms, diagnostics and applications to surface etching, materials synthesis and instrumentation.

Download or read book CROISSANCE ET ETUDE DE COUCHES MINCES SUPRACONDUCTRICES A HAUTE TEMPERATURE CRITIQUE DEPOSEES PAR ABLATION LASER written by ANNIE.. CHEENNE and published by . This book was released on 1992 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: NOUS PRESENTONS UNE ETUDE DE LA CROISSANCE DE COUCHES MINCES DE L'OXYDE SUPRACONDUCTEUR A HAUTE TEMPERATURE CRITIQUE BI#2SR#2CA#1CU#2O#8, DEPOSEES PAR ABLATION LASER, L'OBJECTIF DE CE TRAVAIL ETANT UNE MEILLEURE COMPREHENSION DES PROCESSUS DE DEPOT LASER ET DE CROISSANCE EX SITU. PARADOXALEMENT, LES PARAMETRES DU LASER INFLUENT PEU SUR LES CARACTERISTIQUES DES FILMS DEPOSES. LES LONGUEURS D'ONDE SUPERIEURES OU EGALES A 1.064 MICROMETRE SONT TOUTEFOIS A PROSCRIRE, AFIN D'EVITER L'EJECTION DE PARTICULES DE TAILLE MICRONIQUE. IN SITU, LA FORMATION DES FILMS EST GOUVERNEE PAR LA PRESSION D'OXYGENE ET LA TEMPERATURE DU SUBSTRAT. EX SITU, LA CROISSANCE EST INDISSOCIABLE D'UNE FORTE RUGOSITE DE SURFACE DES FILMS, DUE A UNE QUALITE CRISTALLINE MEDIOCRE ET A LA PRESENCE D'UNE IMPURETE ACICULAIRE. LORS DU RECUIT, UN REFROIDISSEMENT RAPIDE CONDUIT A LA FORMATION DE FILMS PRESENTANT UNE TEMPERATURE CRITIQUE ELEVEE ET UN ETAT DE SURFACE PERTURBE. LES COURBES DE RESISTIVITE DES FILMS DE BI#2SR#2CA#1CU#2O#8 ONT ETE ANALYSEES A L'AIDE D'UN MODELE GRANULAIRE. LES RESULTATS METTENT EN EVIDENCE LA QUASI-BIDIMENSIONNALITE DES SUPRACONDUCTEURS AU BISMUTH ET NOUS ONT PERMIS DE DEMONTRER LE ROLE CRITIQUE DE L'INCORPORATION EN OXYGENE. EN CONCLUSION, UN PROCESSUS DE FORMATION DES COUCHES QUI POURRA EGALEMENT ETRE APPLIQUE A LA REALISATION DE FILMS IN SITU EST PROPOSE

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1994 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pulsed Laser Ablation written by Ion N. Mihailescu and published by CRC Press. This book was released on 2018-01-09 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pulsed laser–based techniques for depositing and processing materials are an important area of modern experimental and theoretical scientific research and development, with promising, challenging opportunities in the fields of nanofabrication and nanostructuring. Understanding the interplay between deposition/processing conditions, laser parameters, as well as material properties and dimensionality is demanding for improved fundamental knowledge and novel applications. This book introduces and discusses the basic principles of pulsed laser–matter interaction, with a focus on its peculiarities and perspectives compared to other conventional techniques and state-of-the-art applications. The book starts with an overview of the growth topics, followed by a discussion of laser–matter interaction depending on laser pulse duration, background conditions, materials, and combination of materials and structures. The information outlines the foundation to introduce examples of laser nanostructuring/processing of materials, pointing out the importance of pulsed laser–based technologies in modern (nano)science. With respect to similar texts and monographs, the book offers a comprehensive review including bottom-up and top-down laser-induced processes for nanoparticles and nanomicrostructure generation. Theoretical models are discussed by correlation with advanced experimental protocols in order to account for the fundamentals and underline physical mechanisms of laser–matter interaction. Reputed, internationally recognized experts in the field have contributed to this book. In particular, this book is suitable for a reader (graduate students as well as postgraduates and more generally researchers) new to the subject of pulsed laser ablation in order to gain physical insight into and advanced knowledge of mechanisms and processes involved in any deposition/processing experiment based on pulsed laser–matter interaction. Since knowledge in the field is given step by step comprehensively, this book serves as a valid introduction to the field as well as a foundation for further specific readings.

Download or read book Laser Ablation and Desorption written by and published by Academic Press. This book was released on 1997-12-10 with total page 671 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume introduces the subject of laser ablation and desorption to scientists and engineers. It covers fundamental experimental and theoretical tools, models, and techniques, and introduces the most important applications. Clearly written and organized in a straightforward manner, Laser Ablation and Desorption lead the reader straight through the fundamentals of laser-surface interactions. Each chapter is self-contained and includes references to other chapters as necessary, so that readers may begin with the topic of greatest interest and follow the references to other aspects of the subject contained within the book.Key Features* Provides up-to-date information about one of the most active fields in physics today* Written and edited by major figures in the field of laser ablation and desorption* Represents the most comprehensive treatment of the state-of-the-art available

Download or read book Practical Applications of Laser Ablation written by Dongfang Yang and published by BoD – Books on Demand. This book was released on 2021-07-14 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser ablation refers to the phenomenon in which an intense laser beam irradiates the surface of a solid to induce instant local removal of atoms by a thermal or non-thermal mechanism. Through eight chapters of original research studies and literature reviews written by experts from the international scientific community, this book presents theoretical and experimental aspects of the laser ablation phenomenon for processing material including pulsed laser deposition of thin films, laser surface modification, laser machining and laser nanoparticle formation. It also includes a study of the dynamics of plasmas generated by laser ablation of multi-component materials and an overview of laser-induced breakdown spectroscopy (LIBS) and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) techniques for chemical analysis.

Download or read book Applications of Laser Ablation written by Dongfang Yang and published by BoD – Books on Demand. This book was released on 2016-12-21 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser ablation refers to the phenomenon in which a low wavelength and short pulse (ns-fs) duration of laser beam irradiates the surface of a target to induce instant local vaporization of the target material generating a plasma plume consisting of photons, electrons, ions, atoms, molecules, clusters, and liquid or solid particles. This book covers various aspects of using laser ablation phenomenon for material processing including laser ablation applied for the deposition of thin films, for the synthesis of nanomaterials, and for the chemical compositional analysis and surface modification of materials. Through the 18 chapters written by experts from international scientific community, the reader will have access to the most recent research and development findings on laser ablation through original research studies and literature reviews.

Download or read book Laser Ablation for Materials Synthesis Volume 191 written by David C. Paine and published by . This book was released on 1990-11-15 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: The MRS Symposium Proceeding series is an internationally recognised reference suitable for researchers and practitioners.

Download or read book Pulsed Laser Ablation of Solids written by Mihai Stafe and published by Springer Science & Business Media. This book was released on 2013-11-09 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book introduces ‘the state of the art' of pulsed laser ablation and its applications. It is based on recent theoretical and experimental studies. The book reaches from the basics to advanced topics of pulsed laser ablation. Theoretical and experimental fundamental phenomena involved in pulsed laser ablation are discussed with respect to material properties, laser wavelength, fluence and intensity regime of the light absorbed linearly or non-linearly in the target material. The energy absorbed by the electrons leads to atom/molecule excitation, ionization and/or direct chemical bond breaking and is also transferred to the lattice leading to material heating and phase transitions. Experimental non-invasive optical methods for analyzing these phenomena in real time are described. Theoretical models for pulsed laser ablation and phase transitions induced by laser beams and laser-vapour/plasma interaction during the plume expansion above the target are also presented. Calculations of the ablation speed and dimensions of the ablated micro- and nano-structures are performed. The validity and required refinement of different models in different experimental conditions is provided. The pulsed laser deposition process which bases on collecting the ablated particles on a surface is analyzed in terms of efficiency and quality of the deposited films as a function of ambient conditions, target material, laser parameters and substrate characteristics. The interaction between the incident laser and the ablation plasma is analyzed with respect to its influence on the structures of the deposited films and its capacity to generate high harmonics and single attosecond pulses which are highly desirable in pump-probe experiments.