Letteratura scientifica selezionata sul tema "Propriétés électrique de surface"
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Articoli di riviste sul tema "Propriétés électrique de surface"
Moreau, Julien, e Lionel Lartigue. "Plasmons polaritons de surface". Photoniques, n. 115 (8 agosto 2022): 46–50. http://dx.doi.org/10.1051/photon/202211246.
Testo completoSimon, François-Xavier, Julien Guillemoteau, Guillaume Hulin, Joachim Rimpot, Julien Thiesson e Alain Tabbagh. "De nouvelles perspectives pour les applications des méthodes électromagnétiques basse fréquence en archéologie". Archimède. Archéologie et histoire ancienne 7 (9 giugno 2020): 272–82. http://dx.doi.org/10.47245/archimede.0007.act.14.
Testo completoGahé, Emile, Michel Allard e Maurice K.-Seguin. "Géophysique et dynamique holocène de plateaux palsiques à Kangiqsualujjuaq, Québec nordique". Géographie physique et Quaternaire 41, n. 1 (18 dicembre 2007): 33–46. http://dx.doi.org/10.7202/032663ar.
Testo completoKhadir, Samira, Mahmoud Chakaroun e Azzedine Boudrioua. "Effet du plasmon de surface localisé sur les propriétés des sources organiques (OLED)". Photoniques, n. 90 (gennaio 2018): 26–27. http://dx.doi.org/10.1051/photon/20189026.
Testo completoSauvage, Didier, Michèle Gueguen e Bernard Simon. "Influence des propriétés de surface sur les paramètres électriques des TEC GaAs". Annales des Télécommunications 40, n. 3-4 (marzo 1985): 83–87. http://dx.doi.org/10.1007/bf02997833.
Testo completoChevereau, Élodie, Lionel Limousy, Patrick Dutournié e Patrick Bourseau. "Réalisation et modification des propriétés de sélectivité d’une membrane minérale d’ultrafiltration : étude de la rétention de solutions salines". Revue des sciences de l’eau 25, n. 1 (28 marzo 2012): 21–30. http://dx.doi.org/10.7202/1008533ar.
Testo completoGaye, Mar, Souleymane Niang e Cheikh Ahmed Tidiane Faye. "Influence Physico-Chimique des Eaux d’Irrigation sur les Terrains Maraîchers des Niayes : Cas du Gandiolais". European Scientific Journal, ESJ 19, n. 30 (31 ottobre 2023): 26. http://dx.doi.org/10.19044/esj.2023.v19n30p26.
Testo completoBartolo, Denis, e Cécile Cottin-Bizonne. "Matière active synthétique". Reflets de la physique, n. 57 (aprile 2018): 27–31. http://dx.doi.org/10.1051/refdp/201857027.
Testo completoBlaive, B., e J. Metzger. "Moment multipolaire électrique. Quelques propriétés des moments cartésien, irréductible, sphérique". Journal de Chimie Physique 82 (1985): 373–79. http://dx.doi.org/10.1051/jcp/1985820373.
Testo completoLe Gressus, C., Ph Maire, M. Gautier, J. P. Duraud e G. Lecayon. "Rôle des défauts ponctuels sur les propriétés des isolants : charge électrique, claquage, ténacité". Journal de Chimie Physique 85 (1988): 931–40. http://dx.doi.org/10.1051/jcp/1988850931.
Testo completoTesi sul tema "Propriétés électrique de surface"
Ritacco, Hernán A. "Propriétés de volume et de surface dans les systèmes mixtes polyélectrolytes/tensioactifs de charges opposés : une étude d'effet Kerr et tension de surface dynamique". Paris 11, 2003. http://www.theses.fr/2003PA112207.
Testo completoThis work is a study of polyelectrolyte/surfactant systems in aqueous solution. Results of electrical birefringence, viscosity, equilibrium surface tension, dynamic surface tension, x-rays reflectivity and surface viscoelasticity are presented. By means of electrical birefringence measurements we have determined the existence of five surfactant concentrations that characterise the systems. These concentrations include the equivalence point of charges (P_EQ), the critical aggregation concentration (CAC) and the concentrations that defines the phase changes in the system. We have been able to make theoretical calculations that acceptably approximate the experimental results for the Kerr constant. For PAMPS (polyacrylamide sulfonate) the sulfonate internal groups (permanent dipole) are oriented independently of the field and for xanthan the orientation is controlled by the counter ions polarisation. The results of birefringence relaxation show that the polyelectrolyte evolves from a extended conformation to a more compact one. This collapse of the macro-molecule occurs close to PEQ. In respect to the surface properties we have found that the adsorption dynamics are closely related to the different characteristic concentrations mentioned. Using the diffusional model we have determined the existence of energy barriers of adsorption, whose value varies with the surfactant concentration, between 1 and 18 kT. This was associated to the variation of the net charge on the mixed complexes and to reorganisation process at the surface. We propose to explain the results of equilibrium surface tension (γ_eq) and dynamic ones (γ(t)) a model that considers the possibility of having two possible states for the surfactant at the interface. One of these states is attributed to the presence of the polyelectrolyte in the surface layer. Our conclusion is that, initially, the surfactant molecules adsorb being delayed by a "drag" of the polyelectrolyte. Then the polymer enters in the surface layer and produces the reorganisation of surfactant molecules in the interface. At equilibrium, all the species are complexed. The predictions made on the basis of the surface tension results are evaluated in the light of X-ray reflectivity measurements
Maillard, Alexis. "Structuration des propriétés électriques d'une surface vitreuse appliquée au contrôle de l'orientation d'une mésophase nématique". Electronic Thesis or Diss., Bordeaux, 2024. http://www.theses.fr/2024BORD0490.
Testo completoThe work performed in this thesis focused on the development of a hybrid photonic system combining a novel functionalized vitreous material and a nematic mesophase of liquid crystals.The main component of the hybrid system is a commercial soda-lime glass, whose surface potential is structured via a plasma-assisted thermoelectric poling treatment. This is made possible through the use of a microstructured electrode. In a second phase, the electrically structured vitreous substrate is used to produce a simple photonic system that is a liquid crystal cell. These cells are designed to observe the alignment induced by the poled glass on the molecules. At this stage, the goal is to better understand the origin of the liquid crystal alignment on poled glass, which involves a multimodal characterization of the hybrid system, broken down into two main axis:• A structural study of the functionalized glass• A study of the molecular organization in contact with the poled substrateThe first axis is achieved through a thorough spectroscopic analysis of the poled substrate. Techniques such as polarized second harmonic generation microscopy, polarized Raman microscopy, and composition analysis by electron microprobe establish a clear link between the electrical function of the material and its atomic structure. The second axis, concerning molecular organization, is conducted using polarized light microscopy and polarized Raman spectroscopy techniques to measure molecular orientation. Furthermore, the application of an orientation distribution model allows for a comparison of molecular alignment between samples and with a reference planar alignment cell.The initial work of the thesis aimed to reproduce results previously obtained on similar systems, then to increase the size of the structures formed when liquid crystals come into contact with the substrate. In this context, the glass was poled using an electrode in the form of a microstructured grid. The results show that the obtained electrical function is highly oriented on the glass and that the liquid crystals follow this alignment by forming triangular patterns, with similar molecular flatness relative to the substrates for two poling grid sizes.These preliminary studies led to the use of a new wire-shaped electrode. The study of the poled glass structure shows a strong link between the appearance of a planar space charge and plasma production during the treatment. The origin of the space charge is further discussed based on Raman measurements. Subsequently, when poled glasses with wire anodes are brought into contact with liquid crystals, homogeneous alignment domains in the form of bands are produced. A strong correlation between domain size and poling voltage was observed, while the molecular alignment remained the same for all treatments. Finally, the design of dynamic In-plane Switching (IPS) cells with poled substrates allows for the comparison of the anchoring of molecules on the surface with a reference cell designed with commercially available substrates
Desanglois, Françoise. "Synthèses et propriétés électriques de nouvelles phases cristallisées ou vitreuses a base de bismuth, cadmium et plomb". Lille 1, 1994. http://www.theses.fr/1994LIL10192.
Testo completoTatoulian, Ludovic. "Polymérisation de couches minces biofonctionnelles par électro-spray en post-décharge électrique : mécanismes et propriétés". Paris 6, 2006. http://www.theses.fr/2006PA066415.
Testo completoPark, So Jeong. "Propriétés électriques et modélisation des dispositifs MOS avanvés : dispositif FD-SOI, transistors sans jonctions (JLT) et transistor à couche mince à semi-conducteur d'oxyde amorphe". Phd thesis, Université de Grenoble, 2013. http://tel.archives-ouvertes.fr/tel-00954637.
Testo completoPHAN, THANH BINH. "Polydiméthylsiloxane : réseaux aléatoires (RMN) et propriétés électriques". Université Joseph Fourier (Grenoble), 1998. http://www.theses.fr/1998GRE10013.
Testo completoAbdoulaye, Alassane. "Etude des propriétés diélectriques du système eau-zéolite NaY en relation avec les propriétés de surface". Montpellier 2, 1996. http://www.theses.fr/1996MON20103.
Testo completoGuerch, Kévin. "Etude des propriétés physiques et électriques de matériaux céramiques utilisés en application spatiale". Thesis, Toulouse 3, 2015. http://www.theses.fr/2015TOU30174.
Testo completoDielectric materials used on satellites are subject to radiative and thermal extreme stresses which may lead to disturbances on board instrumentation. The application efficiency can then decrease significantly due to charging and aging effects of used ceramics. With the aim to understand and predict these phenomena, the mechanisms investigation of charges transport and electrical aging on these ceramics is of high importance. The scientific approach of this study was to define a protocol and an experimental method which allows characterising the electrical and physico-chemical behaviours of raw boron nitride and coated with a thin coating of alumina. For this purpose, a parametric study was performed in the irradiation chamber, named CEDRE (at ONERA Toulouse) in order to assess the influence of some parameters such as, incident energy, primary electron flux, temperature, ionising dose, on charging, relaxation and electrical aging kinetics of these industrial ceramics. This study demonstrated that it is possible to greatly limit the dielectrics charging thanks to the use of a ceramic coating and suitable annealing thermal treatment. Indeed, the high secondary electron emission of alumina and the increase of surface conductivity generated by the annealing thermal treatment partly govern the low surface potential of coated boron nitride. Some alumina coating were subsequently elaborated through PVD-RF and then characterised in the irradiation chamber in order to identify the preparation parameters which allow optimising the electrical properties of system. It was shown that the optimisation of the roughness and the coating thickness limits the surface potential of ceramics. An experimental study was conducted in the frame of an international collaboration with the Materials Physics Group of the Utah State University (Logan, USA), in order to investigate the influence of nature and densities of electron defects on the electrical properties of different ceramics. The cathodoluminescence method was used and brought to light the origin of total conductivity difference between materials, raw, coated and annealed. A new method to measure the surface potential under continuous electron irradiation was developed and then validated. A partial discharges mechanism was identified on surface of annealed samples with this optimised device. Ageing processes of the irradiated materials was also studied in the irradiation chamber to reproduce the observed degradation in orbit over the long time. It was demonstrated that the charging of annealed coated materials is noticeable when the sample receive a critical ionising dose. Several physico-chemical characterisations were thus performed at CIRIMAT in order to study the evolution of structural and chemical properties of ceramics. This evolution was correlated with that of electrical properties after deterioration under critical electron irradiation. The contamination and deterioration mechanisms of coated ceramics are responsible of the electrical aging observed experimentally. Finally, these thorough experimental characterisations allowed the development of physical model for the description of the different mechanisms involved on irradiated ceramics and coating
Sénéchal, Vincent. "Polymères électro-stimulables pour le contrôle des propriétés de surface". Thesis, Bordeaux, 2017. http://www.theses.fr/2017BORD0756/document.
Testo completoElectro-responsive polymer surfaces are able to change their properties when they are stimulatedby an electric field. In this work, we grafted weak polyelectrolyte on surfaces by self-assembly orby transferring the molecules using the Langmuir-Schaefer method. First we studied theorganization of the polyelectrolyte chains at the surface for different pH and salt concentration ofthe subphase used in the Langmuir trough. Then we explored the response of the surfaces to pHand salt concentration changes by measuring the thickness variation of the polyelectrolyte filmsand the changes in contact angle. These preliminary studies allowed us to select the graftingdensity of polyelectrolyte chains and the pH and salt concentrations of the aqueous solutionadapted for the stimulation of the surfaces by an electric field. We then demonstrated that PAAand PDMAEMA grafted chains were very sensitive to the variation of the applied voltage whenthe pH is close to the pKa or from the pKb of the surface. If the charge of the surface has the samesign as the charges on the polyelectrolyte chains, the latter would adopt a brush conformation,whereas if the charge of the surface has the opposite sign compared to the sign of the charges onthe polyelectrolyte chains, the chains would collapse. This reversible transition of the chainsconformation with the sign of the applied voltage allowed us to control the wetting and theadhesion properties of these surfaces. Nevertheless, for a pH close to the pKb, the P2VP graftedchains are almost unresponsive to the application of an electric field. We supposed that this is theconsequence of a local pH variation inside the grafted chains when the electric field is applied
Menard, Stéphane. "Propriétés optiques et électriques des nanostructures Si/CaF2". Université Joseph Fourier (Grenoble), 1999. http://www.theses.fr/1999GRE10235.
Testo completoLibri sul tema "Propriétés électrique de surface"
F, Klimovich A., e Kestelʹman V. N, a cura di. Electrophysical phenomena in the tribology of polymers. Amsterdam, The Netherlands: Gordon and Breach Science Publishers, 1999.
Cerca il testo completo1941-, MacDonald R. J., Taglauer E e Wandelt K. 1944-, a cura di. Surface science: Principles and current applications. Berlin: Springer, 1996.
Cerca il testo completoMamonova, Marina V., Vladimir V. Prudnikov e Irina A. Prudnikova. Surface Physics. Taylor & Francis Group, 2019.
Cerca il testo completoL, Volynskiĭ A. Surface Phenomena in the Structural and Mechanical Behaviour of Solid Polymers. Taylor & Francis Group, 2016.
Cerca il testo completoMamonova, Marina V. Surface Physics: Theoretical Models and Experimental Methods. Taylor & Francis Group, 2013.
Cerca il testo completoMamonova, Marina V., Vladimir V. Prudnikov e Irina A. Prudnikova. Surface Physics: Theoretical Models and Experimental Methods. Taylor & Francis Group, 2016.
Cerca il testo completoSurface Physics: Theoretical Models and Experimental Methods. Taylor & Francis Group, 2013.
Cerca il testo completoSurface Impedence Boundary Conditions. CRC, 2008.
Cerca il testo completoElectrical Phenomena at Interfaces : Fundamentals: Measurements, and Applications. CRC Press LLC, 2018.
Cerca il testo completoElectrical Phenomena at Interfaces : Fundamentals: Measurements, and Applications. CRC Press LLC, 2018.
Cerca il testo completoCapitoli di libri sul tema "Propriétés électrique de surface"
LU, Xiaoxin, Julien YVONNET, Fabrice DETREZ e Jinbo BAI. "Modélisation électromécanique non linéaire multi-échelle de nanocomposites graphène-polymère". In Nanocomposites, 167–98. ISTE Group, 2021. http://dx.doi.org/10.51926/iste.9031.ch6.
Testo completoSAKHO, Ibrahima. "Équations de Maxwell". In Ondes électromagnétiques 1, 5–119. ISTE Group, 2020. http://dx.doi.org/10.51926/iste.9006.ch1.
Testo completoMAHFOUF, Jean-François. "Les variables de surface". In Satellites pour les sciences de l’atmosphère 2, 51–72. ISTE Group, 2025. https://doi.org/10.51926/iste.9141.ch3.
Testo completo"Annexe A16 Surface d’onde et construction d’Huygens". In Symétrie et propriétés physiques des cristaux, 347–52. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0927-1-023.
Testo completo"Annexe A16 Surface d’onde et construction d’Huygens". In Symétrie et propriétés physiques des cristaux, 347–52. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0927-1.c023.
Testo completo"Annexe A16 Surface d’onde et construction d’Huygens". In Symétrie et propriétés physiques des cristaux, 347–52. EDP Sciences, 2020. https://doi.org/10.1051/978-2-7598-0499-3.c023.
Testo completoRÉGLÉ, Hélène, e Brigitte BACROIX. "Anisotropie et propriétés mécaniques". In Le développement des aciers à très haute résistance, 53–78. ISTE Group, 2022. http://dx.doi.org/10.51926/iste.9122.ch2.
Testo completo"6 Étude expérimentale des propriétés optiques de surface". In Les surfaces solides : concepts et méthodes, 239–48. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0293-7-017.
Testo completo"6 Étude expérimentale des propriétés optiques de surface". In Les surfaces solides : concepts et méthodes, 239–48. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0293-7.c017.
Testo completo"6 Étude expérimentale des propriétés optiques de surface". In Les surfaces solides : concepts et méthodes, 239–48. EDP Sciences, 2020. https://doi.org/10.1051/978-2-86883-773-8.c017.
Testo completoAtti di convegni sul tema "Propriétés électrique de surface"
YOUSSEF, Laurène, Audrey PROROT, Alain DENOIRJEAN, Camélia PROPESCU, Laure SANDOVAL e Fanny MEYTRAUD. "Revêtements à base cuivre par projection plasma – Application à la décontamination des surfaces". In Les journées de l'interdisciplinarité 2022. Limoges: Université de Limoges, 2022. http://dx.doi.org/10.25965/lji.630.
Testo completoCUEVAS, Alexandra, Vincent REY, Julien TOUBOUL, Rémi CHEMIN e Fabrice ARDHUIN. "Etude en bassin de l’estimation des propriétés d’un courant cisaillé sur la verticale à partir de la dispersion des ondes de gravité de surface". In Journées Nationales Génie Côtier - Génie Civil. Editions Paralia, 2022. http://dx.doi.org/10.5150/jngcgc.2022.004.
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