Auswahl der wissenschaftlichen Literatur zum Thema „Spectroscopies et microscopie électronique“
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Zeitschriftenartikel zum Thema "Spectroscopies et microscopie électronique"
Verger, Louisiane, Olivier Dargaud und Laurent Cormier. „Couleurs et émaux. Des décors de la Manufacture de Sèvres à la réactivité des pigments“. Reflets de la physique, Nr. 63 (Oktober 2019): 26–29. http://dx.doi.org/10.1051/refdp/201963026.
Der volle Inhalt der QuelleZoghbi, André EL, Lorena Klein und Isabelle Frateur. „Évaluation de la résistance à la corrosion des fils orthodontiques par mesures électrochimiques et microscopie électronique à balayage (MEB)“. L'Orthodontie Française 84, Nr. 4 (27.11.2013): 367–81. http://dx.doi.org/10.1051/orthodfr/2013063.
Der volle Inhalt der QuelleAzzoug, Asma. „Elaboration et caractérisation des couches minces d'oxyde de cuivre : Application à la photo-dégradation de Méthyle Orange“. Journal of Physical & Chemical Research 1, Nr. 1 (01.06.2022): 57–71. http://dx.doi.org/10.58452/jpcr.v1i1.32.
Der volle Inhalt der QuelleSaoudi, R., G. Hollinger, A. Gagnaire, P. Ferret und M. Pitaval. „Détermination des épaisseurs de films très minces de SiO2 sur silicium par microscopie électronique en transmission, ellipsométrie spectroscopique et spectroscopie de photoélectrons“. Journal de Physique III 3, Nr. 7 (Juli 1993): 1479–88. http://dx.doi.org/10.1051/jp3:1993212.
Der volle Inhalt der QuelleManus, Jean-Marie. „Carl Zeiss: union microscopie optique et électronique“. Revue Francophone des Laboratoires 2012, Nr. 442 (Mai 2012): 20. http://dx.doi.org/10.1016/s1773-035x(12)71443-0.
Der volle Inhalt der QuelleKociak, Mathieu, Luiz Henrique Galvão Tizei, Sophie Meuret, Hugo Lourenço-Martins und Odile Stephan. „Spectromicroscopies électroniques : sonder les propriétés optiques de nanomatériaux avec des électrons rapides“. Photoniques, Nr. 102 (Mai 2020): 39–43. http://dx.doi.org/10.1051/photon/202010239.
Der volle Inhalt der QuelleRiviere, M., M. Rautureau, G. Besson, M. Steinberg und M. Amouri. „Complementarite des rayons X et de la microscopie electronique pour la determination des diverses phases d'une argile zincifere“. Clay Minerals 20, Nr. 1 (März 1985): 53–67. http://dx.doi.org/10.1180/claymin.1985.020.1.05.
Der volle Inhalt der QuelleLaporte, Marine H., Éloïse Bertiaux, Virginie Hamel und Paul Guichard. „L’organisation native de la cellule révélée grâce à la cryo-microscopie à expansion“. médecine/sciences 39, Nr. 4 (April 2023): 351–58. http://dx.doi.org/10.1051/medsci/2023052.
Der volle Inhalt der QuelleYeruham, I., A. Nyska, A. Abraham und Radu Algazi. „Apparition de lésions proches de la variole bovine chez des bovins en Israël“. Revue d’élevage et de médecine vétérinaire des pays tropicaux 49, Nr. 4 (01.04.1996): 299–302. http://dx.doi.org/10.19182/remvt.9500.
Der volle Inhalt der QuelleArbouet, Arnaud, Florent Houdellier, Giuseppe Mario Caruso, Sophie Meuret, Mathieu Kociak und Sébastien Weber. „Observer la matière à l’échelle du nanomètre et de la femtoseconde : la microscopie électronique en transmission ultrarapide“. Photoniques, Nr. 102 (Mai 2020): 26–30. http://dx.doi.org/10.1051/photon/202010226.
Der volle Inhalt der QuelleDissertationen zum Thema "Spectroscopies et microscopie électronique"
Lourenço-Martins, Hugo. „Experiment and theory of plasmon coupling physics, wave effects and their study by electron spectroscopies“. Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS284/document.
Der volle Inhalt der QuelleSurface plasmons (SP) are electromagnetic waves propagating at the interface between two media typically a metal and a dielectric. SPs can confine electromagnetic fields in very short volumes (typically one to few nanometers), well below the light diffraction limit. This property has a tremendous number of applications ranging from fundamental physics (e.g. quantum optics) to applications (e.g. cancer therapy). However, the price to pay is that SPs suffer from huge ohmic losses in the metal which leads to very short lifetimes (typically few femtoseconds). Theoretically, this presence of dissipation dramatically hardens the theoretical description of SPs. Another consequence of the sub-wavelength confinement of light associated with SPs is that their observation requires a nanometric resolution - which excludes the use of standard optical techniques. Yet, the scanning transmission electron microscope (STEM) is a particularly suitable tool to study SPs as it employs fast electrons with typical wavelength from 1 to 10 picometers. Thus, the last decade has seen the tremendous development of electron-based spectroscopies applied to nano-optics such as electron energy loss spectroscopy (EELS), cathodoluminescence spectroscopy (CL) or STEM- Hanbury Brown and Twiss interferometry (HBT). In this thesis, I explored different open problems of plasmonics and nano-optics under the scope of electron microscopy and spectroscopies. In chapter 3, I develop a formalism taking into account both the quantum and relativistic nature of EELS experiments using elements of quantum field theory. In chapter 4, I apply the latter formalism to the case of EELS measurements of SPs using electrons with shaped phase. In chapter 5, I give several theoretical and experimental results on coupling experiments involving SPs. Particularly, I demonstrate a counterintuitive type of coupling, the so-called self- hybridization which is a consequence of the non-Hermitian nature of the LSP eigenproblem and draw analogy with open quantum system. Finally, in chapter 6, I discuss the recent result on vibrational EELS in monochromated STEM
Couture, Michelle. „Étude des interactions entre des liposomes cationiques et l'ADN par spectroscopies RMN des solides et infrarouge, dichroïsme circulaire et microscopie électronique“. Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0016/MQ56396.pdf.
Der volle Inhalt der QuelleCerre, Nathalie. „Microscopie en réflexion par fibres optiques : théorie et réalisation“. Dijon, 1992. http://www.theses.fr/1992DIJOS010.
Der volle Inhalt der QuelleBadjeck, Vincent. „Etude par spectro-microscopie électronique d'aciers ODS non irradiés et implantés par hélium“. Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLS086.
Der volle Inhalt der QuelleIrradiated and non-irradiated (Y-Ti-O) oxide-dispersion-strengthened (ODS) steels are investigated by scanning transmission electron microscopy coupled with electron energy-loss spectroscopy (STEM-EELS) to study their chemical structure and the effects of radiation. Analytical methods such as multivariate statistical analysis (MVA) and EELS curve-fitting are carried out to achieve elemental quantification or study the edge fine structures (ELNES). Using MVA, the spectrum-images (SI) can be separated into independent spectral responses to gain insights into the valence state of various elements such as Ti or Cr. Investigations on post-mechanical-alloyed (MA) powders show that the nanoparticle (NP) precipitation occurs only after a further high-temperature treatment (consolidation). In non-irradiated consolidated samples, medium-sized NPs (> 3-4 nm) are found to adopt a Y2Ti2O7-d defective pyrochlore structure with a (Y-Ti-O)-Cr core-shell structure with a reduced-Ti layer also depleted in Y. Cr is also shown to segregate to the grain boundaries in non-irradiated samples. The measured O/Ti ratio of 3.2 found for medium-sized NPs and the observed non-homogeneity of the inter-reticular distance d222 through the particle is interpreted as being due to defects in the particles’ structure; it is indeed confirmed that Y2Ti2O7 medium-sized NPs in ODS steels present numerous defects and are non-stoichiometric. The Ti oxidation state is shown to vary from the centre of the NPs to their periphery from Ti4+ in distorted Oh symmetry to a valency often lower than 3+. Independent component analysis (ICA) allows us to generate bonding maps and extract a Ti-Cr interfacial response. An inter-diffusion of Ti and Cr atoms is observed at this interface. The smallest NPs present a different and ill-defined structure and interface with the Fe-Cr matrix. They either consist of a highly oxygen-deficient pyrochlore structure (Y2Ti2O6+d) or an unknown YaTibOc chemical structure. The O/Ti ratio decreases from 3-3.5 to below 1 for an NP size going from 4 to 1.8 nm. A few large particles (sized from tens to hundreds of nm) present a N-Ti-O or Ti-O chemistry but represent only a small percentage of all the NPs (< 1%). To study the neutron irradiation-induced changes, a number of ODS samples were implanted with He+ ions and irradiated with Fe+ ions. After irradiation, they display a homogeneous distribution of high-pressure He bubbles and radiation-induced Cr depletion, segregation and precipitation (RID, RIS and RIP). The He bubbles are frequently trapped at the NP-matrix interface, although bubbles can exist freely in the matrix, trapped by dislocations and at grain boundaries. The He-K line (21.218 eV for free atoms) shifts to higher energy in the bubbles (ΔE = 0.5 to 4 eV); this is shown to be correlated with the He density. He quantification is carried out with three different methods: spatial difference, curve-fitting and MVA. The density and pressure values are found to reach 100 nm-3 and 8 GPa respectively, although the pressure measurement is only semi-quantitative given that the error bars can reach 30%. The curve-fitting method allows us to map the He-K energy position and intensity, yielding the density, in individual bubbles. The spectral response of individual bubbles can be separated in an SI containing many bubbles at different densities using ICA or vertex component analysis (VCA). Bubbles larger than 4 nm are shown to be under-pressurized or at equilibrium with the Fe-Cr matrix. Below 3.5 nm, the He pressure is shown to increase markedly, passing into the over-pressurised regime
Sayah, Elie. „Etude par microscopie électronique en transmission et spectroscopies in situ des catalyseurs Ag/oxyde à porosité organisée : application en oxydation du dichlorométhane“. Paris 6, 2011. http://www.theses.fr/2011PA066583.
Der volle Inhalt der QuelleNunez, Eroles Marc. „Nanogravure et caractérisation structurale et électronique de rubans de graphène cristallins“. Thesis, Toulouse 3, 2015. http://www.theses.fr/2015TOU30201/document.
Der volle Inhalt der QuelleThe main objectives of this thesis are the fabrication and high-resolution structural characterisation of graphene nanoribbons with atomically smooth edges as well as their device integration and electronic transport study. In first place, we show that crystalline graphene nanoribbons with width under 100 nm and structural properties better than the state of the art can be patterned by a focused electron beam in presence of oxygen. The structural characteristics of the ribbons are also better than the old process using water vapour. Secondly, nanoribbons structure is characterized down to the atomic scale by spherical aberration corrected transmission electron microscopy. We show that the nanoribbons crystallinity, of the centre as well as along the cut edges, is preserved. The performance of our process reaches the state of the art and its reproducibility allows to produce ribbons with length of hundreds of nanometer but as narrow as 16 nm. After that, we have transposed the suspended nanoribbon etching to a partially suspended configuration on a SiO2/Si substrate allowing the integration in devices suitable for electronic transport measurements at low temperature and under magnetic field. The electronic transport in contacted ribbons of 60x300 nm shows a gap and oscillations on backgate scanning measurements that are in agreement with a Coulomb blockade mechanism with dot sizes in the range of the ribbon surface. Even though those results show the persistence of tunnel barriers, the edges quality look good enough to avoid additional confinement. Other than mesoscopic devices, our ribbon fabrication process by electronic beam under oxygen atmosphere opens perspectives in two emergent fields. The process is ultra high vacuum compatible and perfectly adapted to the development of an atomic graphene based technology. A characterisation of contaminants of graphene samples as well as electrical characterisation of graphene devices has been performed in a multiprobe scanning tunnelling microscope in ultra high vacuum. Finally, our graphene nanoribbons have the right dimensions and structural qualities required for the observation of plasmonic behaviour of graphene in visible light and so interact with metallic plasmonic structures. This coupling has been analysed by studying the Raman signal of graphene at the close environment of gold colloids
Mahfoud, Zackaria. „Nanometric spectroscopies of plasmonic structures and semi-conductors nanocrystals“. Thesis, Troyes, 2014. http://www.theses.fr/2014TROY0003/document.
Der volle Inhalt der QuelleFor this thesis, I have realised some experimental works using electron microscopy and electron spectroscopies for the study of plasmonic nanostructures and semiconductor nanocrystals . The aim being to study their optical properties with spatial resolutions of the order of a few nm. At this level it is possible to observe the electric near-field associated to the localised surface plasmon resonances supported by metallic nanostructures . So I was able to study the effect due to the presence of roughness on single gold nanorods and I have found that their presence locally alterate the structure of the electric near-field . Combined measurement of electron energy loss spectroscopy (EELS ) and cathodoluminescence spectroscopy were used to compare the near-field and far-field responses respectively. A study by EELS on the coupling between two metal nanorods positioned end to end and separated by a disance of tens of nanometers was used to map the localisation of hybridised modes separately on each branch of the dimers. Finally, comparative studies of cathodoluminescence and photoluminescence on single quantum dots have shown the equivalence of the information collected by these two techniques for such light emitters
Mahjoub, Mohamed Aymen. „Contributions aux études quantitatives par spectroscopies électroniques (EPES et XPS) : Applications aux surfaces nanostructurées“. Thesis, Clermont-Ferrand 2, 2016. http://www.theses.fr/2016CLF22666/document.
Der volle Inhalt der QuelleThis thesis focuses on the development of new in-situ methods of characterization based on the electron spectroscopies (XPS and EPES) coupled with theoretical calculations obtained through Monte-Carlo simulations in order to perform very precise quantitative studies. The first part of this thesis was devoted to quantitative studies of XPS and MM-EPES measurements. Firstly, the correction function of a hemispherical analyzer (HSA) which is a combination of the analysis area (A) and the transmission (T) was determined using a new method based on the elastic images. For the first time, the dependence of A on the kinetic energy of electrons was highlighted. Using this function, an in-situ method based on the combination of XPS and MM-EPES modeling was setting up. This method was used to determine the organization of gold film deposed on oxidized silicon substrate. Measurements show that this method is able to determine surface parameters when the microscopy techniques do not give any information in the case of a small quantity of gold deposit (less than 2 nm). The second part of this work was directed towards developing a new generation of microscopy called MM-EPEM which is based on the detection of elastic electrons. The stages required to obtain these images are well described and optimized here. The MM-EPEM images processing was used to study gold growth on different substrates. This technique is a non-destructive method and allows the operator to construct chemical tomography and to determine the nano-organization of the surface
Ramade, Julien. „Spectroscopie optique et microscopie électronique environnementale de nanoparticules Ag-In et Ag-Fe en présence de gaz réactifs“. Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE1221/document.
Der volle Inhalt der QuelleBimetallic nanoparticles (NPs) are known to present interesting catalytic properties justifying their use in several industrial processes in the domain of heterogeneous catalysis. However, their (chemical, geometrical, electronical) structure may evolve under realistic reactive atmosphere, involving a modification of their properties. In this multidisciplinary work, the aim is focused on the surface reactivity monitoring of these NPs under controlled gaseous environment. For this purpose, we developed an in situ spectrophotometer based on spatial modulation to monitor the structure evolution of a large assembly of NPs through the study of their localized surface plasmon resonance (LSPR). This global approach has been coupled with a more local approach by environmental transmission electronic microscopy (E-TEM). E-TEM observations have shown both composition and environmental effects on the chemical structure of Ag-In NPs. This structure evolves from a stable low-enriched indium alloy to a core@shell configuration with a shell composed of indium oxide as the indium atomic concentration increases. Furthermore, stable structure (core@shell, Janus, reduced system) domains were evidenced under reducing atmosphere, depending on the temperature and hydrogen pressure. Lastly, Ag-Fe NP oxido-reduction was monitored on the new setup through LSPR modifications. MET observations, environmental plasmonics and simulations (optical response, Monte-Carlo simulations) suggest that these metals are initially segregated, with an enriched-silver surface. The exposure to an oxidative atmosphere seems to induce the diffusion of iron onto the surface, followed by the formation of magnetite (Fe3O4)
Losquin, Arthur. „Surface Plasmon modes revealed by fast electron based spectroscopies : from simple model to complex“. Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00919765.
Der volle Inhalt der QuelleBücher zum Thema "Spectroscopies et microscopie électronique"
Keyse, Robert. Introduction to Scanning Transmission Electron Microscopy. CRC Press LLC, 2018.
Den vollen Inhalt der Quelle findenKeyse, Robert. Introduction to Scanning Transmission Electron Microscopy. Taylor & Francis Group, 2018.
Den vollen Inhalt der Quelle findenBruma, Alina. Scanning Transmission Electron Microscopy. Taylor & Francis Group, 2020.
Den vollen Inhalt der Quelle findenBruma, Alina. Scanning Transmission Electron Microscopy: Advanced Characterization Methods for Materials Science Applications. Taylor & Francis Group, 2020.
Den vollen Inhalt der Quelle findenBruma, Alina. Scanning Transmission Electron Microscopy: Advanced Characterization Methods for Materials Science Applications. Taylor & Francis Group, 2020.
Den vollen Inhalt der Quelle findenBruma, Alina. Scanning Transmission Electron Microscopy: Advanced Characterization Methods for Materials Science Applications. Taylor & Francis Group, 2020.
Den vollen Inhalt der Quelle findenGlauert, A. M. Fixation, Dehydration and Embedding of Biological Specimens (Practical Methods in Electron Microscopy). 5. Aufl. Elsevier Science, 1987.
Den vollen Inhalt der Quelle findenBuchteile zum Thema "Spectroscopies et microscopie électronique"
GENTILS, Aurélie, Stéphanie JUBLOT-LECLERC und Patrick SIMON. „Caractérisation des dommages d’irradiation“. In Les matériaux du nucléaire sous irradiation, 273–96. ISTE Group, 2024. http://dx.doi.org/10.51926/iste.9148.ch10.
Der volle Inhalt der QuelleRIGNEAULT, Hervé, und Julien DUBOISSET. „Imagerie Raman cohérente“. In Spectroscopies vibrationnelles, 273–88. Editions des archives contemporaines, 2020. http://dx.doi.org/10.17184/eac.4204.
Der volle Inhalt der Quelle„L’ère des antigènes et de la microscopie électronique“. In De la jaunisse à l'hépatite C, 51–62. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-84254-203-0.c008.
Der volle Inhalt der QuelleLIU, Yu, Delong HE, Ann-Lenaig HAMON und Jinbo BAI. „Interface et interphase entre matrice époxyde et nanorenforts à base de carbone dans les nanocomposites“. In Nanocomposites, 147–65. ISTE Group, 2021. http://dx.doi.org/10.51926/iste.9031.ch5.
Der volle Inhalt der QuelleAlain, Robert. „ÉTALEMENT DES ACIDES NUCLÉIQUES ET VISUALISATION EN MICROSCOPIE ÉLECTRONIQUE“. In Manuel de techniques virologiques, 325–36. Presses de l'Université du Québec, 1989. http://dx.doi.org/10.2307/j.ctv18pgnrq.32.
Der volle Inhalt der QuelleBrisset, François, Florence Robaut, Guillaume Wille, Philippe Jonnard, Jacky Ruste, Denis Boivin, Georges Slodzian, D. Blavette und E. Cadel. „16 . Division Groupement National de Microscopie Électronique à Balayage et microAnalyse (GN-MEBA)“. In Les 150 ans de la Société Française de Physique, 257–65. EDP Sciences, 2023. http://dx.doi.org/10.1051/978-2-7598-3076-3.c017.
Der volle Inhalt der Quelle„9. Microscopie électronique appliquée à l’étude de la nucléation et de la cristallisation dans les verres“. In Du verre au cristal, 211–32. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-1064-2-015.
Der volle Inhalt der Quelle„9. Microscopie électronique appliquée à l’étude de la nucléation et de la cristallisation dans les verres“. In Du verre au cristal, 211–32. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-1064-2.c015.
Der volle Inhalt der QuelleFredj, A. Ben, und G. Nihottl. „Observation en microscopie électronique à haute résolution d'oxydes à grande maille (c-Dy203) et interprétation des images obtenues“. In October 16, 351. De Gruyter, 1985. http://dx.doi.org/10.1515/9783112500941-005.
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