Добірка наукової літератури з теми "Canaux à haute mobilité"
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Статті в журналах з теми "Canaux à haute mobilité":
Esposito, Emilio, and Mario Raffa. "Qualité et sous-traitance dans l'industrie italienne : quelques résultats d'une étude empirique." Revue internationale P.M.E. 5, no. 2 (February 16, 2012): 57–82. http://dx.doi.org/10.7202/1008139ar.
Merllié, Dominique. "Les Classements Professionnels dans les Enquêtes de Mobilité." Annales. Histoire, Sciences Sociales 45, no. 6 (December 1990): 1317–33. http://dx.doi.org/10.3406/ahess.1990.278910.
Chartrand, P. J., and K. L. Pond. "Cheminement des carrières de direction dans la fonction publique au Canada." Relations industrielles 24, no. 2 (April 12, 2005): 318–32. http://dx.doi.org/10.7202/028021ar.
Piché, Victor, Joel Gregory, and Denise Desrosiers. "Migration et sous-développement en Haute-Volta : essai de typologie." Articles 10, no. 1 (January 6, 2009): 87–120. http://dx.doi.org/10.7202/600843ar.
Belhadj, Abdenabi, Pierre Audren, Christian Vuchener, Joseph Paugam, and Jean-Michel Dumas. "Caractérisation et résultats de fiabilité de transistors à haute mobilité électronique (HEMT)." Annales Des Télécommunications 45, no. 11-12 (November 1990): 585–90. http://dx.doi.org/10.1007/bf02995708.
Thibert, V., J. Di Bussolo, C. Lafontaine, M. Castillo, T. Thomas, and H. Othman. "Analyse haute cadence de buprénorphine et d’éthanol par un système CL–SM/SM multi-canaux." Toxicologie Analytique et Clinique 28, no. 2 (June 2016): S45—S46. http://dx.doi.org/10.1016/j.toxac.2016.03.078.
BERNARD, Paul, and Jean RENAUD. "Contre-mobilité et effets différents : une réflexion sur la transmission des biens inclusifs et des biens exclusifs." Sociologie et sociétés 8, no. 2 (September 30, 2002): 81–98. http://dx.doi.org/10.7202/001050ar.
Sallé, Damien, and Philippe Bidaud. "Optimisation multi-objectif d'un instrument robotisé à haute mobilité pour la chirurgie mini-invasive." Techniques et sciences informatiques 25, no. 8-9 (October 1, 2006): 1179–208. http://dx.doi.org/10.3166/tsi.25.1179-1208.
Nassiet, Michel. "Une étude de mobilité géographique à l'époque moderne : la petite noblesse de Haute-Bretagne." Annales de démographie historique 1986, no. 1 (1987): 235–50. http://dx.doi.org/10.3406/adh.1987.1662.
Francfort, Henri-Paul, and Olivier Lecomte. "Irrigation et société en Asie centrale des origines à l’époque achéménide." Annales. Histoire, Sciences Sociales 57, no. 3 (June 2002): 625–63. http://dx.doi.org/10.3406/ahess.2002.280068.
Дисертації з теми "Canaux à haute mobilité":
Shchepetov, Andrey. "Étude et fabrication de dispositifs nanométriques pour applications THz." Thesis, Lille 1, 2008. http://www.theses.fr/2008LIL10069/document.
The emergent applications in the Terahertz (THz) frequencies range stimulate the development of active and passive rapid devices as much as of emitters and detectors working in this domain. Actually existent devices do not respond to all industry needs because of too high consumption, size and cost, and other inconvenient. A solution for realisation of emitters and detectors could come from plasma-wave transistor that we studied. These devices are based on 1I1-V HEMT and utilised a particular behaviour of electronic transport. Measurements have shown the possibility of emission and detection of radiation at about 1 THz. From the other hand it is necessary to realize electronic active devices (transistors) able to operate near the THz range. This is necessary for realisation of rapid integrated circuits such as amplifiers, mixers and so on. To do this we have chosen to study two kinds of double-gate transistors. Measurements have shown the increasing of static and dynamic performances (maximum drain current and drain current saturation, efficiency of charge control, transconductance, output conductance, operation frequencies). Besides, the same performances can be obtained at lower consumption. Simulations show that performances could be improved even more
Hutin, Louis. "Etude des transistors MOSFET à barrière Schottky, à canal Silicium et Germanium sur couches minces." Grenoble INPG, 2010. http://www.theses.fr/2010INPG0159.
Until the early 2000’s Dennard’s scaling rules at the transistor level have enabled to achieve a performance gain while still preserving the basic structure of the MOSFET building block from one generation to the next. However, this conservative approach has already reached its limits as shown by the introduction of channel stressors for the sub-130 nm technological nodes, and later high-k/metal gate stacks for the sub-65 nm nodes. Despite the introduction of high-k gate dielectrics, constraints in terms of gate leakage and reliability have been delaying the diminution of the equivalent oxide thickness (EOT). Concurrently, lowering the supply voltage (VDD) has become a critical necessity to reduce both the active and passive power density in integrated circuits. Hence the challenge: how to keep decreasing both gate length and supply voltage faster than the EOT without losing in terms of ON-state/OFF-state performance trade-off? Several solutions can be proposed aiming at solving this conundrum for nanoscale transistors, with architectures in rupture with the plain old Silicon-based MOSFET with doped Source and Drain invented in 1960. One approach consists in achieving an ION increase while keeping IOFF (and Vth) mostly unchanged. Specifically, two options are considered in detail in this manuscript through a review of their respective historical motivations, state-of-the-art results as well as remaining fundamental (and technological) challenges: i/ the reduction of the extrinsic parasitic resistance through the implementation of metallic Source and Drain (Schottky Barrier FET architecture); ii/ the reduction of the intrinsic channel resistance through the implementation of Germanium-based mobility boosters (Ge CMOS, compressively-strained SiGe channels, n-sSi/p-sSiGe Dual Channel co-integration). In particular, we study the case of thin films on insulator (SOI, SiGeOI, GeOI substrates), a choice justified by: the preservation of the electrostatic integrity for the targeted sub-22nm nodes; the limitation of ambipolar leakage in SBFETs; the limitation of junction leakage in (low-bandgap) Ge-based FETs. Finally, we show why, and under which conditions the association of the SBFET architecture with a Ge-based channel could be potentially advantageous with respect to conventional Si CMOS
Zimmermann, Katrin. "Contacts ponctuels quantiques dans le graphène de haute mobilité." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAY008/document.
In the quantum Hall regime, the charge carriers are conducted within one-dimensional channels propagating at the edge of a two-dimensional electron gas (2DEG). A quantum point contact (QPC) – a narrow constriction confining spatially electron transport – can control the transmission of these quantum Hall edge channels. In conventional 2DEG systems, a negative voltage applied on the electrostatic split gates depletes locally the electrons underneath them forcing the electrons to pass through the constriction. In contrast, due to the absence of a band gap in graphene, a negative gate voltage induces a continuous shift of the doping from electrons to holes. In the quantum Hall regime, electron and hole edge channels propagate along the pn-interface in the same direction while inelastic scattering induces charge transfer and mixing between them.In this PhD thesis, we have fabricated ballistic graphene devices made by van der Waals stacking of hBN/Gr/hBN heterostructures, and equipped with split gates forming a quantum point contact (QPC) constriction. We have studied the effect of the QPC on the propagation of integer and fractional quantum Hall edge channels and the mixing among them. In the quantum Hall regime, we demonstrate that the integer and fractional quantum Hall edge channels can be controlled and selectively transmitted by the QPC. Due to the high mobility of our devices and the resultant full lifting of the degeneracies of the Landau levels in strong magnetic field, equilibration at the pn-interface is restricted to sublevels of identical spins of the N=0 Landau level.A QPC in the quantum Hall regime offers also an ideal system to study the tunnelling of charge carriers between counter-propagating fractional edge channels of highly correlated, one-dimensional fermions described by the theory of Tomonaga-Luttinger. We study the tunnelling between fractional quantum Hall edge channels in our QPC device in graphene and focus on the 7/3-fractional state to explore the temperature dependence of tunnelling characteristics
Lesic-Arsic, Biljana. "Mobilité de l'îlot de haute pathogénicité de Yersinia pseudotuberculosis." Paris 6, 2004. http://www.theses.fr/2004PA066204.
Sallé, Damien. "Conception optimale d'instruments robotisés à haute mobilité pour la chirurgie mini-invasive." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2004. http://tel.archives-ouvertes.fr/tel-00762265.
Weber, Olivier. "Etude, fabrication et propriétés de transport de transistors CMOS associant un diélectrique haute permittivité et un canal de conduction haute mobilité." Lyon, INSA, 2005. http://theses.insa-lyon.fr/publication/2005ISAL0127/these.pdf.
CMOS scaling allows an improvement of the performance, the integration density and the price of electronic circuits. Several breakthroughs, concerning the MOSFET architecture and materials must be added to push the transistor at his atomic scale limit. The replacement of the gate silicon oxide by a high-k dielectric is promising to improve the oxide thickness/gate leakage current trade-off. A high mobility channel provides a carrier velocity improvement and thus, an increase of the speed/active power ratio in the circuits. This work concerns the study, the fabrication and the transport properties of CMOS transistors with both of these new technological options. It includes several different transistors with a TiN/HfO2 gate stack: strained Si channel nMOSFETs, strained SiGe(:C) or Ge pMOSFETs and a new pMOS architecture with a (111) surface oriented channel. High mobility enhancements compared to the HfO2/Si reference, up to +800% for the hole mobility in strained Ge, are reported in addition to the high-k dielectric characteristic: a 4 decades gate leakage reduction compared to the silicon oxide. Our in-depth electrical characterization demonstrates that the dielectric/channel interface optimization is crucial to obtain high mobility gains. Transistors characteristics are presented and discussed down to 50nm gate length. Finally, the mobility degradation with a TiN/HfO2 gate stack, which constitutes a serious issue for the high-k/metal gate stack emergence, is analysed and the mobility scattering mechanisms are determined experimentally
Mouis, Mireille. "Étude théorique du fonctionnement des dispositifs à effet de champ haute mobilité à hétérojonction." Paris 11, 1988. http://www.theses.fr/1988PA112053.
Sabatini, Giulio. "Étude Monte Carlo de matériaux et composants électroniques à haute mobilité pour les applications TeraHertz." Montpellier 2, 2009. http://www.theses.fr/2009MON20170.
TeraHertz radiation belongs to a part of the electromagnetic spectrum which is not mastered at present. Nevertheless, it is characterized by physical properties which are of interest for different domains: spectroscopy, wireless telecommunications, imaging, security, etc. To understand the behavior of the devices working in this frequency range, a thorough knowledge of the transport properties of the materials which constitute them is necessary. The Monte Carlo method was employed in this thesis to study the physical phenomena present in InGaAs and InAs, which can be exploited for the development of new THz sources or detectors. We thus undertook a detailed study of the static and dynamic transport of electrons and holes in bulk InGaAs, possible component of the HEMT channel (High Electron Mobility Transistor), and in bulk InAs, considering its even better transport properties. We have also directed our research on their high frequency behavior and on various parameters associated with fluctuations. Then, we have analyzed the properties of electronic transport of InAs nanometric diodes, which can be related to the collector zone of a QHET (Quantum Hot Electron Transistor). The objective of part work is to characterize the various modes of transport, their dependences as functions of doping and the type of injection, before studying the ballistic effects present in this type of structures
Besseron, Guillaume. "Contrôle de la stabilité des systèmes locomoteurs à haute mobilité évoluant sur des terrains accidentés." Paris 6, 2008. http://www.theses.fr/2008PA066545.
The research presented in this report deals with the improvement of the autonomous mobile robots locomotion capacities on natural terrains. In this work, an adaptive locomotion system with a redundant wheel-legged hybrid kinematic structure was designed and realized. Indeed, this kind of mechanism has the capacities to adapt itself to uneven grounds. The autonomy of the robot is linked to both its kinematics capacities of adaptation and to its energetic dependence. When the vehicle reconfigurates itself, while moving on an uneven field, a big amount of energy is needed by its internal mobilities. That is why, a posture control aiming at minimizing the number of reconfigurations of the robot has been developed. The goal is to modify the posture of th erobot only when its integrity, i. E. Its stability is jeopardized. The use of a posture control command law based on the potential fields allow to obtain the wanted behaviour of the robot. The command of the movements of the robot relies on the inverse of the differential kinematic model. In this model, the different terms are split, ensuring so both the trajectory and the change of the posture of th erobot. The robot reconfigurates itself when its stability reached a pre-determined value. The principle of this control is validated through numeric simulations representing the dynamic behavoiur of the robot moving on a natural terrain
Najjar, Atallah Leïla. "Estimation haute résolution des directions d'arrivée et des retards temporels de propagation dans un contexte de radio communications." Paris 11, 2002. http://www.theses.fr/2002PA112095.
In this PhD, array processing is used for the estimation of propagation parameters in radio communication channels. A high resolution approach based on a subspace formulation is adopted for the estimation of Directions Of Arrival (DOA) and time delays corresponding to the co-channel users. The estimated parameterized channel is expected to enhance the performances at the reception. These parameters also serve to localize the users which can be exploited in a spatial diversity multiple access scheme. An adaptive approach is firstly used for the source subspace tracking and the algorithm PASTd is adapted through two new versions to handle coherent arrivals that frequently occur in multipath scenario. After this, a supervised approach using known signals is considered for the DOA or delays and DOA estimation. A new method called PADEC is proposed to estimate and to associate DOA to users. It consists of a parallel processing per tap delay in the impulse response of each user channel. In the spatio-temporal frame, two supervised algorithms are proposed. They sequentially process delays then DOA of each user paths. In the supervised approach, unstructured estimates of the impulse response of SIMO channels are firstly recovered by matched filtering or via the optimization of an MMSE criterion. The use of known signals is shown to relax the constraint on the antenna size, through processing only a subset of paths at a time. Also, an important reduction in the computational load is obtained. The estimation performance is enhanced in comparison to blind approach and the parameters and users are naturally gathered
Частини книг з теми "Canaux à haute mobilité":
Aimon, Dominique. "Chapitre 7 : Le pneumatique : innovation et haute technologie pour faire progresser la mobilité." In Chimie et transports, 135–48. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-1149-6-013.
Aimon, Dominique. "Chapitre 7 : Le pneumatique : innovation et haute technologie pour faire progresser la mobilité." In Chimie et transports, 135–48. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-1149-6.c013.
Isoardi, Delphine, and Laurie Tremblay Cormier. "Mobilité des individus et des biens dans la vallée de l’Ubaye (Alpes-de-Haute-Provence) et le Guillestrois (Hautes-Alpes) à l’âge du Fer." In La conquête de la montagne : des premières occupations humaines à l’anthropisation du milieu. Éditions du Comité des travaux historiques et scientifiques, 2019. http://dx.doi.org/10.4000/books.cths.7902.