Literatura académica sobre el tema "Caractérisation de capteurs"
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Artículos de revistas sobre el tema "Caractérisation de capteurs"
Le Maire, Pauline y Marc Munschy. "La mesure magnétique en drone : un nouveau moyen pour cartographier à des résolutions jusque-là inaccessibles". E3S Web of Conferences 342 (2022): 02007. http://dx.doi.org/10.1051/e3sconf/202234202007.
Texto completoBarbey, Christelle, Jérôme Helbert, Arnaud Jaën, Elodie Pagot, Jean-Charles Samalens, Lilian Valette, Christian Germain, Dominique Guyon y Jean-Pierre Wigneron. "Complémentarité des images Pléiades et drone pour la viticulture de précision dans le cadre du programme EarthLab". Revue Française de Photogrammétrie et de Télédétection, n.º 208 (23 de octubre de 2014): 123–29. http://dx.doi.org/10.52638/rfpt.2014.128.
Texto completoFade, Julien, Matthieu Boffety y Vincent Devlaminck. "L’imagerie Polarimétrique". Photoniques, n.º 109 (julio de 2021): 57–60. http://dx.doi.org/10.1051/photon/202110957.
Texto completoKhelifi, Cherif y Blidi Touati. "Caractérisation d’un Distillateur à Effet de Serre". Journal of Renewable Energies 1, n.º 2 (31 de diciembre de 1998): 99–108. http://dx.doi.org/10.54966/jreen.v1i2.949.
Texto completoDusch, Y., C. Ghouila Houri, A. Mazzamurro, G. Boussatour, H. Dahmani, O. Bou Matar, V. Maurice, P. Pernod y A. Talbi. "Mise en oeuvre de capteurs RF-MEMS acoustiques pour l’industrie 4.0". J3eA 21 (2022): 1019. http://dx.doi.org/10.1051/j3ea/20221019.
Texto completoMartin, Etienne, Patrice Jardet y Francis Pons. "Vérification et caractérisation des capteurs et des chaînes de contrôle". Revue Générale Nucléaire, n.º 2 (marzo de 1990): 110–15. http://dx.doi.org/10.1051/rgn/19902110.
Texto completoCherrington, Emil A. "BRDF-CORRECTED VEGETATION INDICES CONFIRM SEASONAL PATTERN IN GREENING OF FRENCH GUIANA’S FORESTS". Revue Française de Photogrammétrie et de Télédétection 1, n.º 211-212 (30 de diciembre de 2020): 3–9. http://dx.doi.org/10.52638/rfpt.2015.536.
Texto completoNassar, Georges. "Capteurs acoustiques basse fréquence pour la caractérisation des milieux viscoélastiques complexes". Instrumentation Mesure Métrologie 13, n.º 3-4 (30 de diciembre de 2013): 129–58. http://dx.doi.org/10.3166/i2m.13.3-4.129-158.
Texto completoCamaraa, M., N. Loganathan y A. Fischer. "Technologie additive : Impression de matériaux par jet d’encre pour l’électronique imprimée". J3eA 21 (2022): 1002. http://dx.doi.org/10.1051/j3ea/20221002.
Texto completoRouahbi, Ch, F. Guerin, R. Tan, Ch Cappello, S. Lachaize, J. Grisolia, J. L. Noullet et al. "Capteur de gaz à base de nanoparticules : synthèse de nano-objets par voie chimique, intégration et caractérisation de capteurs élaborés en salle blanche". J3eA 16 (2017): 1022. http://dx.doi.org/10.1051/j3ea/20171022.
Texto completoTesis sobre el tema "Caractérisation de capteurs"
Proust, Julien. "Etude, caractérisation et optimisation expérimentales de nano-capteurs plasmoniques". Thesis, Troyes, 2014. http://www.theses.fr/2014TROY0001/document.
Texto completoUltra sensitive sensors are required to probe very low concentrations of molecules. It has been shown that plasmonic nano-sensors could play this role. Nevertheless, even after thirteen years of research, a lot of questions remain unanswered.We will try to answer them in this study: what happens when a single molecule is adsorbed on a nanoparticle surface? In a monolayer? And what happens for the next layer of molecules? Can we easily enhance the sensitivity and the readability of sensors? We demonstrate experimentally a singular behavior when the quantity of molecules in the near-field region is very low, typically in the zeptogram level. To measure the low quantity of matter, different techniques to enhance the signal are studied: integration of sensor on axicon micro-lenses of Fabry-Perot like nano-cavities. We developed axicon micro-lenses to increase the intensity of unique nanoparticle signal. They redistribute the electromagnetic field into a Bessel beam with low numerical aperture, allowing an easy collection in far field. Nano-cavities have been designed to decrease the damping and refine the plasmonic resonance to increase the readability of the sensors. All these studies have the same target: to detect in-situ disease markers at very low concentrations in order to treat the patients before the first symptoms
Combette, Philippe. "Caractérisation d'une émulsion au moyen de capteurs ultrasonores spécifiques". Montpellier 2, 2000. http://www.theses.fr/2000MON20179.
Texto completoRougeau, Laurent. "Synthèse et caractérisation de composés thermochromes. : Application aux capteurs thermiques". Chambéry, 2006. http://www.theses.fr/2006CHAMS027.
Texto completoThe target of this work is to create an intelligent label able to indicate if temperature has risen over a definite threshold. This control is highlighted by colour change. To meet industrial requirements (one or tow-step syntheses from low cost starting materials), we have studied diacetylenic compounds which can provide a great number of various molecules. Beyond industrial objective, this thesis approaches additional studies. To understand the thermochromic phenomenon, we have determined the structure of various compounds before and after the colour change by analytical techniques: solid NMR, Raman spectrometry, ESR, X-rays. We have also established structure/property relationships between the starting diyns and their thermochromic properties, especially influence of chains lengths and chemical functions (alcohol, ester, ether, amine, amide. . . ). We have identified a new family of thermochromic diacetylenic compounds (asymmetric monoesters) changing from blue (after UV irradiation) to red (after heating) at temperatures varying from -20 to +75°C according to the chains length. The blue intermediary product reacts very quickly to various stimuli and the red compound is insoluble, which has limited the field of usable analytical techniques. Nevertheless, various solid analyses have allowed us to propose a structure for blue and red compounds and a mechanism for the thermochromic behaviour. During UV irradiation, the diacetylenic conjugated system is transformed into a cumulene having free radical to its ends, then after heat we obtain a hyperconjugated polymer with double and triple bounds. Lastly, an X-rays study has allowed us to understand why some compounds turn red whereas others not, crystalline structure of the starting compound playing a very important role in thermochromic phenomenon
Megriche, Adel. "Elaboration et caractérisation de matériaux piézoélectriques pour capteurs haute température". Lyon, INSA, 1999. http://www.theses.fr/1999ISAL0022.
Texto completoThe need for high temperature piezoelectric material sin, for example, ultrasonic probes and pressure sensors is very important for automobile industry or chemical transformations. At present, only single crystals of tourmaline, which has poor piezoelectric coefficients can be operated above 600 °c. The objective of this work is to develop a piezoelectric ceramics with improved properties, which can be operated up to 500 °c. Two families of materials with Curie temperature above 600 °c have been selected, namely LiNbO3 and a Bismuth Titanates belongs to the Aurivillius compounds family that can be represented by the general formula Bi2An-1BnO3n+3 in which A can be a monovalent, divalent or trivalent cation or a mixture of them, B represents Ti 4 +, Nb5+, W6+ etc. , and n can have values of 2,3,4. . . Preparation of dense ceramics with the required properties will be achieved with varied substitutions and some additives impurities. Tree compositions are chosen and caracterized in high temperature device. -* Li0,97Na0,03NbO3+0,2% MnO2 -* Bi4Ti2?95W0,05O12+0,2%Cr2O3 -* Na0,5Bi4Ti3,85N0,15O15+0,3%MnO2. At the same time a two high temperature acoustic pressure sensors will be developed for use with the piezoelectric ceramics and thick films. The response of the realized sensor to an acoustical load is analysed in relation to temperature
Daulle, Armelle. "Conception, réalisation et caractérisation de capteurs de puissance micro-onde". Université Joseph Fourier (Grenoble), 1999. http://www.theses.fr/1999GRE10167.
Texto completoDhahbi, Hakim. "Caractérisation et modélisation de matériaux magnétiques pour capteurs de courant". Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAT027/document.
Texto completoThe topic of this study involves power sensors used in Schneider Electrics circuit breakers that should operate increasingly at variable frequencies. We are particularly focusing on "iron losses” through their characterization and modelling. The study is based on the improvement of the LS model in order to use it in the dimensioning of the sensor. The model is integrated in Flux® as post-processing; therefore an application has been developed that includes Ls model iron losses at each time step in the simulation of the sensor and its environment. An experimental analysis of the behaviour of the sensors magnetic circuit was also conducted by integrating new materials on the one hand and by considering the manufacturing processes and operating conditions of the sensor on the other hand. Furthermore, a calorimetric study was conducted to measure the iron losses of the sensor experimentally and to state reference measurements to compare with the results of simulations. Finally, two main missions have been engaged and remain to be finalized: a new method of the static LS model and an experimental bench, a calorimeter, has been designed and tested, but still to be improved
Pham, Q. Nghi. "Elaboration et caractérisation d'oxydes perovskites pour capteurs de pH - Etude du mécanisme de fonctionnement de ces capteurs". Phd thesis, Université du Maine, 2006. http://tel.archives-ouvertes.fr/tel-00417172.
Texto completoPham, Quoc Nghi. "Elaboration et caractérisation d'oxydes perovskites pour capteurs de pH : étude du mécanisme de fonctionnement de ces capteurs". Le Mans, 2006. http://cyberdoc.univ-lemans.fr/theses/2006/2006LEMA1002.pdf.
Texto completoPerovskite oxides can be used as sensitive element in pH sensors. A high ionic conductivity, mechanical and chemical resistances allow a fast response time and some potential applications in industry, such as food industry. Firstly, the crystallographic structure and the conduction properties of various oxides were studied before testing their pH sensitivity. Secondly, the optimized conditions to obtain a ceramic sensitive membrane starting from powders synthesized by various methods were determined. Moreover, the characteristics of the pH sensor were determined: response time, selectivity, influence of the redox species… Finally, among the studied compounds, the Li0. 30La0. 57TiO3 (LLTO) compound which exhibits the highest sensitivity to the pH was selected as model for studying the mechanism of pH detection. In particular, there mechanisms were suggested: the oxydo-reduction, the ionic exchange and the reaction of the -OH groups at the oxide surface. Experimental results show that the -OH groups at the oxide surface are responsible of the pH sensitivity of the ceramic membranes. The pH detection property by a potentiometric sensor of this type is unique and innovative. This work will allow the development of these pH sensors for practical uses
Gaborit, Gwenaël. "Caractérisation de champs électriques hyperfréquences par capteurs électro-optiques vectoriels fibrés". Chambéry, 2005. http://www.theses.fr/2005CHAMS039.
Texto completoMicrowave guided or radiated electric (E) fields are usually characterized using metallic probes or dipole antennas. This kind of measurement presents important limitations: a relatively narrow frequency bandwidth, a quite low spatial resolution and a significant disturbance of the signal to be measured. In this PhD Thesis, the developed pigtailed electro-optic (EO) sensors are fully dielectric, thug minimizing the perturbation induced on the signal to be measured. They are based on the Pockels' effect which consists in a modification of the refractive indices of an EO crystal induced by an applied E field. Finally, we have used two types of modulation in order to exploit the Pockels' effect : our pigtailed EO sensors are either based on polarization state modulation or on amplitude modulation. Their transversal spatial resolution depends on the shape of the laser beam inside the EO crystal and can be of the order of 10 j1,m. The selectivity to E field components is directly linked to the modification of the eigen dielectric axis of the EO crystal induced by the applied E field. While anisotropic crystals (e. G. LiTaO3 or DAST) allow us to measure one component of the E field (a selectivity of 46 dB has been reached), isotropic crystals (ZnTe) provide a simultaneous two-components E-field measurement using a single crystal and a single laser probe. We have demonstrated the advantages of E-field measurements using EO sensors compared to other techniques like antennas, bolometers, infrared thermography,. .
Drean, Emilie. "Contribution au développement de capteurs piézoélectriques pour la caractérisation mécanique des étoffes". Mulhouse, 2006. http://www.theses.fr/2006MULH0853.
Texto completoCapítulos de libros sobre el tema "Caractérisation de capteurs"
Masilamany, Gayathri, Pierre-Yves Joubert, Stéphane Serfaty, Yohan Le Diraison y Magdalena Couty. "Capteurs inductifs radiofréquences pour la caractérisation diélectrique de tissus biologiques". En Instrumentation et Interdisciplinarité, 157–62. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-1206-6-019.
Texto completoMasilamany, Gayathri, Pierre-Yves Joubert, Stéphane Serfaty, Yohan Le Diraison y Magdalena Couty. "Capteurs inductifs radiofréquences pour la caractérisation diélectrique de tissus biologiques". En Instrumentation et Interdisciplinarité, 157–62. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-1206-6.c019.
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