Dissertations / Theses on the topic 'PC TO NC CHARGE'
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YADAV, MONIKA. "SOME ASPECTS OF LASER-PLASMA INTERACTION FOR ELECTRON ACCELERATION." Thesis, DELHI TECHNOLOGICAL UNIVERSITY, 2021. http://dspace.dtu.ac.in:8080/jspui/handle/repository/18736.
Full textBessaih, Fawzi Cheik. "Optimisation et validation de la charge utile d'un satellite de télécommunication." Thesis, Avignon, 2013. http://www.theses.fr/2013AVIG0196/document.
Full textNc
Ardhuin, Thibault. "Étude par STM et NC-AFM des mécanismes de charge de molécules individuelles sur substrats isolants." Thesis, Toulouse 3, 2018. http://www.theses.fr/2018TOU30315.
Full textIn recent years, new techniques have emerged to control the charge of individual nano-objects (atom, molecule, metal aggregate or semiconductor, etc.) deposited on insulating substrates. This achievement has been made possible by the refinement of Tunneling Microscopy (STM) and Atomic Force (AFM) methods. By combining these tools, the precursors succeeded in controlling the state of charge of a gold atom deposited on a NaCl (001) bilayer on a Cu (111) substrate. Subsequently, this type of manipulation has been extended to molecular systems, in particular at the CEMES with Cu(dbm)2. This subject is part of the continuity of these studies. The objective was to analyze the impact of the increase of the thickness of the insulating film on the charge mechanisms. This problem requires a quantification of the state of the system charge as well as a measurement of the insulation thickness. In this work, we have been able to study KBr and NaCl films deposited on Cu(111) and Ag(111) surfaces. For these studies, whether in tunnel current (STM) or force gradient (NC-AFM), the control of the tip state is essential. When working on an insulating substrate, the tip tends to collect contaminants that change their electronic properties. However, to charge a system in a reproducible way, we must imperatively control the metallicity of the apex. This control requires a frequent re-preparation of the tip on a metal surface, difficult to find in the case of a thick film. To overcome this scarcity, we have implemented a deposition mask allowing a control of the gradient of the thickness of the insulating film while preserving clean metal zones. This allowed us to carry out our measurements with a better controlled state of the tip. The instability of the tip state has also led us to perform Z (V) regulated current spectroscopies. By controlling this current, it is then possible to minimize the interaction between the tip and the insulating film, thus making the tip last longer. These Z (V) spectroscopies also make it possible to increase the measurement voltage until reaching the field emission regime. We have observed a variation of the modulation of the field emission resonances (FER) amplitude as a function of the thickness of the insulating film. [...]
Bussière, William. "Mesure des grandeurs (T,Nc,P) au sein du plasma d'arc des fusibles en moyenne tension." Clermont-Ferrand 2, 2000. http://www.theses.fr/2000CLF22258.
Full textVincent, Emmanuel. "Étude des propriétés de dégradation du système SI/SIO#2 : application a la fiabilité des filières CMOS submicroniques." Grenoble INPG, 1996. http://www.theses.fr/1996INPG0126.
Full textHirech, Abdelhamid. "Diagnostics et modélisation d'une cellule de panneau à plasma couleur." Toulouse 3, 1997. http://www.theses.fr/1997TOU30291.
Full textGarchery, Laurent. "Fabrication et étude des propriétés physiques des nanostructures Si/SiGe : application aux nouveaux dispositifs." Université Joseph Fourier (Grenoble), 1996. http://www.theses.fr/1996GRE10232.
Full textRötger, Antonia. "Etude par magnétotransport de l'état d'onde de densité de charge dans les bronzes oxygénés quasi-bidimensionnels KMo6O17 et (PO2)4(WO3)2m." Grenoble 1, 1993. http://www.theses.fr/1993GRE10036.
Full textHostachy, Jean-Christophe. "Réduction de la charge polluante des effluents du blanchiment de la pate à papier par un traitement à l'ozone." Grenoble INPG, 1994. http://www.theses.fr/1994INPG0167.
Full textBarral, Muriel. "Contribution à l'étude des systèmes métaux alcalins/C60 solide : Synthèse électrochimique et étude physique des composés du C60 avec le lithium et le sodium." Grenoble 1, 1995. http://www.theses.fr/1995GRE10053.
Full textMazoyer, Pascale. "Analyse et caractérisation des mécanismes de perte de charge relatifs aux diélectriques multicouches du point mémoire EPROM." Université Joseph Fourier (Grenoble), 1994. http://www.theses.fr/1994GRE10009.
Full textBouyer, Bernard. "Gravure sélective et sans dommage du silicium en mode triode synchronisé assistée d'un champ magnétique : application à la technologie C.C.D." Grenoble 1, 1990. http://www.theses.fr/1990GRE10074.
Full textLorenzo-Diaz, José-Emilio. "Etude par diffusion de neutrons des transitions de phase dans les composés quasi-unidimensionnels (TaSe4)2I et (NbSe4)3I." Grenoble 1, 1992. http://www.theses.fr/1992GRE10184.
Full textBillat, Sophie. "Contribution à l'étude de l'électroluminescence du silicium poreux de type P fortement dopé." Université Joseph Fourier (Grenoble), 1994. http://www.theses.fr/1994GRE10141.
Full textRossi, Giuseppe Germano. "Etude de la réponse au rayonnement X entre 10KeV-100KeV des détecteurs à micro-pistes de germanium avec résolution spatiale et en énergie." Université Joseph Fourier (Grenoble), 1997. http://www.theses.fr/1997GRE10089.
Full textChmaissem, Omar. "Détermination structurale des mécanismes de transfert de charges dans le supraconducteur Pb2Sr2Y(1-x)CaxCu3O(8+[delta])." Grenoble 1, 1992. http://www.theses.fr/1992GRE10039.
Full textWalz, Dieter. "Caractérisation de la contamination métallique dans le silicium par des méthodes de durée de vie : application au cas du fer dans le silicium de type P." Grenoble INPG, 1995. http://www.theses.fr/1995INPG0048.
Full textHénaux, Stéphane. "Contribution à l'amélioration des méthodes de caractérisation électrique des matériaux Silicium Sur Isolant (SOI)." Université Joseph Fourier (Grenoble), 1998. http://www.theses.fr/1998GRE10116.
Full textNiel, Stéphan. "Optimisation du système émetteur-base de transistors bipolaires haute performance en technologie 0,35 [mu]m, simple-polysiliciium, quasi-auto-alignée." Université Joseph Fourier (Grenoble), 1998. http://www.theses.fr/1998GRE10186.
Full textRanz, Emmanuel. "Contribution à l'étude des défauts DX et EL2 et propriétés de transport dans les plans de dopage GalnAs, GaAs et dans les hétérojonctions InGaAs/AlGaAs, GalnP/GaAs." Toulouse, INSA, 1992. http://www.theses.fr/1992ISAT0041.
Full textPatella, Agostino. "Orientifold Planar Equivalence in Lattice Gauge Theories." Doctoral thesis, Scuola Normale Superiore, 2008. http://hdl.handle.net/11384/85864.
Full textCandelier, Philippe. "Contribution à l'amélioration de la fiabilité des mémoires non volatiles de type flash EEPROM." Université Joseph Fourier (Grenoble ; 1971-2015), 1997. http://www.theses.fr/1997GRE10245.
Full textLiu, Oscar, and 劉志昇. "Multi-Axis NC Machining and Mold Design of PC Cooling Fans." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/47052861523017237813.
Full text國立臺灣科技大學
機械工程系
92
Abstract The first objective of this research is to automate the generation of four-axis NC machining codes for the making of PC cooling fans for lab experiment. Following the success of making experimental fans, this research also considers the feasibility of designing mold cavities for producing fans which need 4-axis machining. In regard to the issue of machining of experimental cooling fans, the 3D CAD mold of cooling fans is firstly established by using the sectional data points of fan blades. Geometry of the 3D CAD model is analyzed so that an interference-free cutter paths can be generated. Process plans are prepared manually and NC machining codes are then generated using Surface CAM. Practical four-axis machining is finally undertaken to product the part. As for the automation of mold design, the interference region between fan blades is analyzed so that the spiral path to split the cavity and core can be found automatically. In addition, mold plates which execute the mold opening process is also generated using the EMX module of Pro/ENGINEER so that the entire interference-free mold opening process can be shown on the screen to verify the ideas proposed in this research.