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Etude De Nanostructures Metalliques Resonnant Dans Le Domaine Optique Application A Loptique De Champ Proche
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Book Synopsis ETUDE DE NANOSTRUCTURES METALLIQUES RESONNANT DANS LE DOMAINE OPTIQUE, APPLICATION A L'OPTIQUE DE CHAMP PROCHE by : OLIVIER.. FALLOU
Download or read book ETUDE DE NANOSTRUCTURES METALLIQUES RESONNANT DANS LE DOMAINE OPTIQUE, APPLICATION A L'OPTIQUE DE CHAMP PROCHE written by OLIVIER.. FALLOU and published by . This book was released on 1998 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA MICROSCOPIE OPTIQUE EN CHAMP PROCHE POSE LE PROBLEME DE L'EFFICACITE DES SONDES UTILISEES POUR L'ILLUMINATION D'UN ECHANTILLON OU LA COLLECTION DE LA LUMIERE. DEUX PARAMETRES PERMETTANT DE MESURER L'EFFICACITE D'UNE SONDE SONT MIS EN AVANT : RESOLUTION (CONFINEMENT DE LA LUMIERE) ET EFFICACITE DE DIFFRACTION/TRANSMISSION. UN ETAT DE L'ART DES SONDES FAIT RESSORTIR L'INTERET DE LA NOTION DE SONDE RESONANTE. LES ANTENNES OPTIQUES RESONANTES (AOR), SUJET DE CE TRAVAIL, SONT DES NANOSTRUCTURES METALLIQUES DONT LES PROPRIETES DE RESONANCE ET DE CONFINEMENT DE LA LUMIERE SONT DETERMINEES PAR LEUR GEOMETRIE. DEUX TYPES D'AOR SONT DECRITS, A SAVOIR LES ANTENNES COMPOSEES D'UNE SEULE STRUCTURE ISOLEE, ET LES ANTENNES DE TYPE DIPOLE BIEN CONNUES EN TECHNOLOGIE HYPERFREQUENCE. DES MODELES PHYSIQUES SIMPLES ONT ETE UTILISES POUR DECRIRE LA PHYSIQUE DES RESONANCES APPARAISSANT DANS CES STRUCTURES LORSQU'ELLES SONT REALISEES DANS DES METAUX NOBLES. AINSI, DANS DES STRUCTURES SIMPLES DE PETITES DIMENSIONS, LES RESONANCES SONT DUES A L'EXCITATION D'UN PLASMON LOCALISE. DANS DES ANTENNES ALLONGEES, ELLES PROVIENNENT D'OSCILLATIONS DE CHARGES SUIVANT L'AXE DE L'ANTENNE, QUI RESONNE ALORS COMME UNE CAVITE POUR UN CHAMP ELECTRIQUE LONGITUDINAL. DES SIMULATIONS EN ELEMENTS FINIS ONT PERMIS DE MONTRER CES PROPRIETES POUR DES GEOMETRIES REALISTES D'ANTENNES REALISEES SUR UN SUBSTRAT DIELECTRIQUE. PAR AILLEURS, DES ANTENNES EN OR ONT ETE REALISEES ET CARACTERISEES, MONTRANT DES RESONANCES MOINS FORTES QUE CELLES ATTENDUES ; LA RAISON EN EST EXPLIQUEE. UN DISPOSITIF EXPERIMENTAL METTANT EN OEUVRE LES AOR AVEC UNE METHODE ORIGINALE D'ASSERVISSEMENT EN HAUTEUR A ETE REALISE. DES RESOLUTIONS EN INTENSITE DE /4 ONT ETE MONTREES, AINSI QUE L'EXISTENCE D'UN SIGNAL MAGNETO-OPTIQUE EN CHAMP PROCHE. UN MODELE SEMI-ANALYTIQUE A ETE MIS EN PLACE POUR COMPRENDRE LA FORMATION DES IMAGES EN CHAMP PROCHE AU MOYEN DE CE DISPOSITIF.
Book Synopsis Propriétés optiques de nanoparticules métalliques et application aux nanocapteurs par exaltation de surface by : Nicolas Guillot
Download or read book Propriétés optiques de nanoparticules métalliques et application aux nanocapteurs par exaltation de surface written by Nicolas Guillot and published by . This book was released on 2012 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le travail présenté dans ce manuscrit a permis de mettre en lumière les différentes possibilités menant à l’optimisation de l’efficacité de capteurs basés sur la résonance de plasmons de surface localisé (RPSL) et fabriqués par des techniques contrôlant précisément la géométrie des nanostructures métalliques. L’accent a été mis plus particulièrement sur les capteurs par RPSL et sur les capteurs par diffusion Raman exaltée de surface (DRES). Le premier chapitre a rappelé les paramètres clés menant à l’optimisation recherchée, i.e., la nature du métal, la taille de la nanoantenne, sa forme, son milieu environnant, la polarisation du champ électrique incident, la séparation entre les nanoparticules et la présence d’ordres supérieurs. Le second chapitre s’est davantage centré sur les capteurs DRES en exposant le principe et les possibilités d’optimisation de leur signal dans le cas de rangées de nanostructures d’or. Le chapitre 3 s’est consacré à l’observation de l’allure du champ électromagnétique local (amplitude et longueur de décroissance) par l’étude du couplage champ proche entre les nanoparticules d’or.
Book Synopsis Microscopie optique en champ proche sans ouverture by : Sébastien Ducourtieux
Download or read book Microscopie optique en champ proche sans ouverture written by Sébastien Ducourtieux and published by . This book was released on 2001 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Étude dans le champ proche optique de l'interaction entre fluorescence d'un nanocristal et résonance plasmon by : Rabeb Jazi
Download or read book Étude dans le champ proche optique de l'interaction entre fluorescence d'un nanocristal et résonance plasmon written by Rabeb Jazi and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les nanocristaux semi-conducteurs colloïdaux possèdent des propriétés photo-physiques qui en font des objets de choix pour des applications variées, comme le marquage biologique, le photovoltaïque ou encore l'optique quantique. Leur interaction avec une structure photonique peut modifier leurs propriétés d'émission (durée de vie, intensité...). Le microscope optique de champ proche est un outil privilégié pour venir sonder ces modifications à l'échelle nanométrique.Cette thèse porte sur la réalisation d'une sonde active de champ proche réalisée à partir d'un nanocristal cœur/coquille CdSe/CdS greffé à l'apex d'une fibre optique amincie. Cette sonde est utilisée pour cartographier, dans les 3 dimensions de l'espace et à l'échelle nanométrique, les variations de durée de vie de l'émetteur. Elle permet de rendre compte des variations des modes photoniques sur la surface.Une partie de cette thèse porte sur la réalisation de la sonde active elle-même. Grâce à cette sonde les études sont alors développées sur un réseau de trous dans un film mince d'or. Des simulations FDTD ont été réalisées dans le but de déterminer les paramètres pertinents du réseau et d'analyser leur réponse en champ proche.Les résultats expérimentaux des durées de vie en divers points de différents réseaux, obtenus avec la sonde active, sont confrontés aux résultats numériques.
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.
Download or read book Nanophotonics written by Hervé Rigneault and published by Wiley-ISTE. This book was released on 2006-07-18 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanophotonicsis a comprehensive introduction to the emerging area concerned with controlling and shaping optical fields at a subwavelength scale. Photonic crystals and microcavities are extensively described, including non-linear optical effects. Local-probe techniques are presented and are used to characterize plasmonic devices. The emerging fields of semiconductor nanocrystals and nanobiophotonics are also presented.
Book Synopsis Optical Properties Of Graphene by : Rolf Binder
Download or read book Optical Properties Of Graphene written by Rolf Binder and published by World Scientific. This book was released on 2016-11-11 with total page 517 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive state-of-the-art overview of the optical properties of graphene. During the past decade, graphene, the most ideal and thinnest of all two-dimensional materials, has become one of the most widely studied materials. Its unique properties hold great promise to revolutionize many electronic, optical and opto-electronic devices. The book contains an introductory tutorial and 13 chapters written by experts in areas ranging from fundamental quantum mechanical properties to opto-electronic device applications of graphene.
Book Synopsis Phononic Crystals by : Vincent Laude
Download or read book Phononic Crystals written by Vincent Laude and published by Walter de Gruyter GmbH & Co KG. This book was released on 2015-09-14 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phononic crystals are artificial periodic structures that can alter efficiently the flow of sound, acoustic waves, or elastic waves. They were introduced about twenty years ago and have gained increasing interest since then, both because of their amazing physical properties and because of their potential applications. The topic of phononic crystals stands as the cross-road of physics (condensed matter physics, wave propagation in inhomogeneous and periodic media) and engineering (acoustics, ultrasonics, mechanical engineering, electrical engineering). Phononic crystals cover a wide range of scales, from meter-size periodic structures for sound in air to nanometer-size structures for information processing or thermal phonon control in integrated circuits. Phononic crystals have a definite relation with the topic of photonic crystals in optics. The marriage of phononic and photonic crystals also provides a promising structural basis for enhanced sound and light interaction. As the topic is getting popular, it is nowadays presented and discussed at various international conferences. After the first ten years during which the topic has remained mainly theoretical with a few proof-of-concept demonstrations in the literature, the evolution has been towards applications, instrumentation, and novel designs. The physical explanations for various effects are now well understood and efficient numerical methods and analysis tools have been developed. The book contains a comprehensive set of finite element model (FEM) scripts for solving basic phononic crystal problems. The scripts are short, easy to read, and efficient, allowing the reader to generate for him(her)self band structures for 2D and 3D phononic crystals, to compute Bloch waves, waveguide and cavity modes, and more.
Book Synopsis Ferroelectric Crystals for Photonic Applications by : Pietro Ferraro
Download or read book Ferroelectric Crystals for Photonic Applications written by Pietro Ferraro and published by Springer Science & Business Media. This book was released on 2008-09-02 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the latest achievements in the field of ferroelectric domain engineering and characterization at micron- and nano-scale dimensions and periods. The book collects the results obtained in recent years by world renowned scientific leaders in the field, thus providing a valid and unique overview of the state-of-the-art. At the same time the book provides a view to future applications of those engineered materials in the field of photonics.
Book Synopsis Confocal Microscopy and Multiphoton Excitation Microscopy by : Barry R. Masters
Download or read book Confocal Microscopy and Multiphoton Excitation Microscopy written by Barry R. Masters and published by SPIE Press. This book was released on 2006 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text guides you through the principles and practical techniques of confocal and multiphoton microscopy. It also describes the historical connections and parallel inventions that resulted in modern techniques of live cell imaging and their use in biology and medicine. You will find comparisons of different types of confocal and multiphoton microscopes, solutions to the problems one would encounter when using various microscopic techniques, tips on selecting equipment, and an extensive annotated bibliography of additional resources.
Book Synopsis Gratings: Theory and Numeric Applications by :
Download or read book Gratings: Theory and Numeric Applications written by and published by Popov, Institut Fresnel. This book was released on with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fundamentals of Latex Film Formation by : Joseph Keddie
Download or read book Fundamentals of Latex Film Formation written by Joseph Keddie and published by Springer Science & Business Media. This book was released on 2010-02-18 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has emerged out of our long-time research interests on the topic of latex film formation. Over the years we have built up a repertoire of slides used in conference presentations, short courses and tutorials on the topic. The story presented in this book has thereby taken shape as it has been told and re-told to a mix of academic and industrial audiences. The book presents a wide body of work accumulated by the polymer colloids community over the past five decades, but the selection of examples has been flavoured by our particular experimental interests and development of mathematical models. We intend the book to be a starting point for academic and industrial scientists beginning research on latex film formation. The emphasis is on fundam- tal mechanisms, however, and not on applications nor on specific effects of formu- tions. We hope that the book consolidates the understanding that has been achieved to-date in the literature in a more comprehensive way than is possible in a review article. We trust that the reader will appreciate the fascination of the topic.
Book Synopsis Cellular Automata Modeling of Physical Systems by : Bastien Chopard
Download or read book Cellular Automata Modeling of Physical Systems written by Bastien Chopard and published by Cambridge University Press. This book was released on 2005-06-30 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a self-contained introduction to cellular automata and lattice Boltzmann techniques. Beginning with a chapter introducing the basic concepts of this developing field, a second chapter describes methods used in cellular automata modeling. Following chapters discuss the statistical mechanics of lattice gases, diffusion phenomena, reaction-diffusion processes and non-equilibrium phase transitions. A final chapter looks at other models and applications, such as wave propagation and multiparticle fluids. With a pedagogic approach, the volume focuses on the use of cellular automata in the framework of equilibrium and non-equilibrium statistical physics. It also emphasises application-oriented problems such as fluid dynamics and pattern formation. The book contains many examples and problems. A glossary and a detailed bibliography are also included. This will be a valuable book for graduate students and researchers working in statistical physics, solid state physics, chemical physics and computer science.
Book Synopsis Diffusion in Materials - DIMAT 2011 by : Igor Bezverkhyy
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.
Book Synopsis Phononic Crystals by : Abdelkrim Khelif
Download or read book Phononic Crystals written by Abdelkrim Khelif and published by Springer. This book was released on 2015-07-28 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an in-depth analysis as well as an overview of phononic crystals. This book discusses numerous techniques for the analysis of phononic crystals and covers, among other material, sonic and ultrasonic structures, hypersonic planar structures and their characterization, and novel applications of phononic crystals. This is an ideal book for those working with micro and nanotechnology, MEMS (microelectromechanical systems), and acoustic devices. This book also: Presents an introduction to the fundamentals and properties of phononic crystals Covers simulation techniques for the analysis of phononic crystals Discusses sonic and ultrasonic, hypersonic and planar, and three-dimensional phononic crystal structures Illustrates how phononic crystal structures are being deployed in communication systems and sensing systems
Book Synopsis Phytochemicals in Nutrition and Health by : Mark S. Meskin
Download or read book Phytochemicals in Nutrition and Health written by Mark S. Meskin and published by CRC Press. This book was released on 2002-03-19 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: Are soy isoflavones neuroprotective? Just how different is one species of Echinacea from another? Which phytochemicals will be effective as therapeutic agents in vivo? Supported by solid scientific research, Phytochemicals in Nutrition and Health helps provide answers to these and other probing questions concerning the mechanisms of action associat
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.
