Concept

Contact électrique

Publications associées (60)

Contact and edge effects in graphene devices

Klaus Kern, Marko Burghard, Kannan Balasubramanian, Ralf Thomas Weitz, Eduardo Jian Hua Lee

Electrical transport studies on graphene have been focused mainly on the linear dispersion region around the Fermi level(1,2) and, in particular, on the effects associated with the quasiparticles in graphene behaving as relativistic particles known as Dira ...

2008

Magnetic field sensor for measuring direction of a magnetic field in a plane

Radivoje Popovic, Pavel Kejik

A magnetic field sensor for measuring a direction of a magnetic field in a plane comprises a sensing structure (4) comprising a ring-shaped well (10), a plurality of contacts (11) of equal size placed at equal distance from each other along the ring-shaped ...

2008

Trapping Individual Carbon Nanotubes

Mihai Adrian Ionescu, Anupama Arun

A technique to deterministically manipulate individual Carbon Nanotubes (CNT) has been the brick-wall for the boom of CNT based devices. Here we demonstrate dielectrophoresis as an efficient technique to trap individual Single Walled Carbon Nanotubes (SWCN ...

2008

Méthodologie de conception et optimisation d'actionneurs intégrés sans fer

Igor Stefanini

The growing demand for new technologies in several fields : recreation, medicine, transport, telecommunications and the space industry, etc. is increasingly related to the field of the management, transformation and use of electric power. In this domain, t ...

EPFL2006

The gas film in Spark Assisted Chemical Engraving (SACE) - A key element for micro-machining applications

Rolf Wüthrich

Machining of various electrically non-conductive materials is possible with Spark Assisted Chemical Engraving (SACE). Even though this technology presents several interesting properties like simplicity, flexibility and the possibility to obtain very smooth ...

2006

Conduction Mechanisms in Organic MOSFETs with Bottom and Top Source and Drain Contacts

Jürgen Brugger, Marc Antonius Friedrich van den Boogaart

Abstract—This work reports on the fabrication and characterization of the organic thin film transistors OTFTs. Pentacene transistors are fabricated in top and bottom S/D contact configurations on preoxidized Si wavers. Three different metals – Pt, Au and A ...

2006

Alamouti space-time coded relay strategy for wireless networks

Ali H. Sayed

A relay strategy for Alamouti space-time coded transmissions is proposed. The relay structure is optimized to maximize the received SNR and the receiver is able to exploit the orthogonal structure of the code to ensure temporal and spatial diversity ...

IEEE2005

Longueur de diffusion de spin et magnétisme de structures nanotubes de carbone / matériaux ferromagnétiques

Xavier Hoffer

The aim of this thesis work is to study the spin-dependent transport in multiwalled carbon nanotubes (MWNT). To do so, the electrical resistance of MWNT contacted between ferromagnetic electrodes has been measured, as a function of the contacts magnetic co ...

EPFL2004

Fluctuations de l'aimantation induites par des courants de haute densité dans des vannes de spin électrodéposées

Andrea Fabian Montabert

Copper wires each one containing a pseudo-spin valve of Co/Cu/Co were produced by electrodeposition inside nanoporous polycarbonate membranes. These wires have a diameter of 40 nm and a length of 6000 nm of which only 50 nm relates to the spin valve. In or ...

EPFL2004

Self-assembled nanowires connected to micropads using the nanostencil method

Jürgen Brugger, Marc Antonius Friedrich van den Boogaart

Electrodeposition on Highly Oriented Pyrolytic Graphite (HOPG) steps has been proven to be an easy method for the preparation of metal (Pd, Cu, Ag etc) and metal oxide or sulfide (MoO2, MnO2, MoS2) nanowires in recent years. These wires can be transferred ...

2004

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