Publications associées à Pompe à vide

Reaction-Induced Cluster Ripening and Initial Size-Dependent Reaction Rates for CO Oxidation on Pt-n/TiO2(110)-(1x1)

Harald Brune, Wolfgang Harbich, Simon Bonanni

We determined the CO oxidation rates for size-selected Pt-n (n is an element of {3,7,10}) clusters deposited onto TiO2(110). In addition, we investigated the cluster morphologies and their mean sizes before and after the reaction. While the clusters are fa ...

American Chemical Society2014

ITER ECH&CD Upper Launcher: Design options and Remote Handling issues of the waveguide assembly

Timothy Goodman, René Chavan

The ITER Electron Cyclotron Heating and Current Drive Upper Launcher, developed by the ECHUL-CA Consortium of Euratom Associations (CRPP, CNR, ITER-NL, IPF, IPP, KIT and Politecnico di Milano), is presently in its final design phase. The study presented he ...

Elsevier Science Sa2014

Experimental Investigation of Pressure Fluctuations in a High-Energy Centrifugal Pump Stage at Off-Design Conditions

François Avellan, Mohamed Farhat, Stefan Berten, Philippe Dupont

In centrifugal pumps, the interaction between the rotating impeller blades and the stationary diffuser vanes generates specific pressure fluctuation patterns. At off design operation, high incidence and large local pressure gradients can lead to flow separ ...

Institution of Mechanical Engineers2014

Mixed Dimensionality of Confined Conducting Electrons in the Surface Region of SrTiO3

Thorsten Schmitt, Joël Mesot, Johan Juul Chang, Martin Mansson, Elia Razzoli

Using angle-resolved photoemission spectroscopy, we show that the recently discovered surface state on SrTiO3 consists of nondegenerate t(2g) states with different dimensional characters. While the d(xy) bands have quasi-2D dispersions with weak k(z) depen ...

Amer Physical Soc2014

Evaluation of niobium dimethylamino-ethoxide for chemical vapour deposition of niobium oxide thin films

Patrik Willi Hoffmann, Ali Dabirian, Yury Kuzminykh, Estelle Wagner, Giacomo Benvenuti

Chemical vapour deposition (CVD) processes depend on the availability of suitable precursors. Precursors that deliver a stable vapour pressure are favourable in classical CVD processes, as they ensure process reproducibility. In high vacuum CVD (HV-CVD) pr ...

Elsevier2014

Perovskite Solar Cells with 12.8% Efficiency by Using Conjugated Quinolizino Acridine Based Hole Transporting Material

Michael Graetzel, Mohammad Khaja Nazeeruddin, Mohammad Ibrahim Dar, Sanghyun Paek, Norman Pellet, Peng Qin

A low band gap quinolizino acridine based molecule was designed and synthesized as new hole transporting material for organic-inorganic hybrid lead halide perovskite solar cells. The functionalized quinolizino acridine compound showed an effective hole mob ...

American Chemical Society2014

Chemical Modification of Graphene via Hyperthermal Molecular Reaction

Klaus Kern, Marko Burghard, Stephan Rauschenbach, Sabine Abb, Gordon Rinke

Chemical functionalization of graphene is achieved by hyperthermal reaction with azopyridine molecular ions. The one-step, room temperature process takes place in high vacuum (10(7) mbar) using an electrospray ion beam deposition (ES-IBD) setup. For ion su ...

Amer Chemical Soc2014

A 10 mK scanning tunneling microscope operating in ultra high vacuum and high magnetic fields

Klaus Kern, Markus Etzkorn, Maximilian Assig

We present design and performance of a scanning tunneling microscope (STM) that operates at temperatures down to 10 mK providing ultimate energy resolution on the atomic scale. The STM is attached to a dilution refrigerator with direct access to an ultra h ...

Amer Inst Physics2013

High vacuum chemical vapour deposition of oxides: A review of technique development and precursor selection

Patrik Willi Hoffmann, Ali Dabirian, Yury Kuzminykh, Michael Oliver Reinke

Thin films of oxide materials are widely used for various types of applications. The selection of an appropriate deposition method depends on the aimed material and application. We review here a high vacuum chemical vapour deposition (HV-CVD) method, which ...

Elsevier2013

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Pompe à vide

Reaction-Induced Cluster Ripening and Initial Size-Dependent Reaction Rates for CO Oxidation on Pt-n/TiO2(110)-(1x1)

ITER ECH&CD Upper Launcher: Design options and Remote Handling issues of the waveguide assembly

Experimental Investigation of Pressure Fluctuations in a High-Energy Centrifugal Pump Stage at Off-Design Conditions

Mixed Dimensionality of Confined Conducting Electrons in the Surface Region of SrTiO3

Evaluation of niobium dimethylamino-ethoxide for chemical vapour deposition of niobium oxide thin films

Perovskite Solar Cells with 12.8% Efficiency by Using Conjugated Quinolizino Acridine Based Hole Transporting Material

Chemical Modification of Graphene via Hyperthermal Molecular Reaction

A 10 mK scanning tunneling microscope operating in ultra high vacuum and high magnetic fields

Quantum-State Resolved Gas/Surface Dynamics Experiments

High vacuum chemical vapour deposition of oxides: A review of technique development and precursor selection

Graph Chatbot

Chattez avec Graph Search

Quantum-State Resolved Gas/Surface Dynamics Experiments

A 10 mK scanning tunneling microscope operating in ultra high vacuum and high magnetic fields

High vacuum chemical vapour deposition of oxides: A review of technique development and precursor selection

Reaction-Induced Cluster Ripening and Initial Size-Dependent Reaction Rates for CO Oxidation on Pt-n/TiO2(110)-(1x1)

Experimental Investigation of Pressure Fluctuations in a High-Energy Centrifugal Pump Stage at Off-Design Conditions

Mixed Dimensionality of Confined Conducting Electrons in the Surface Region of SrTiO3

ITER ECH&CD Upper Launcher: Design options and Remote Handling issues of the waveguide assembly

Perovskite Solar Cells with 12.8% Efficiency by Using Conjugated Quinolizino Acridine Based Hole Transporting Material

Chemical Modification of Graphene via Hyperthermal Molecular Reaction

Evaluation of niobium dimethylamino-ethoxide for chemical vapour deposition of niobium oxide thin films