Concept

Potentiel Volta

Publications associées (141)

Ephaptic coupling of cortical neurons

Henry Markram, Rodrigo de Campos Perin, Constantinos Anastassiou

The electrochemical processes that underlie neural function manifest themselves in ceaseless spatiotemporal field fluctuations. However, extracellular fields feed back onto the electric potential across the neuronal membrane via ephaptic coupling, independ ...

2011

Sulfide oxidation and acid mine drainage formation within two active tailings impoundments in the Golden Quadrangle of the Apuseni Mountains, Romania

Linda Frei

Sulfidic mine tailings have to be classified as one of the major source of hazardous materials leading to water contamination. This study highlights the processes leading to sulfide oxidation and acid mine drainage (AMD) formation in the active stage of tw ...

2011

Interfacial Complexes between a Protein and Lipophilic Ions at an Oil-Water Interface

Hubert Girault, Manuel Alejandro Méndez Agudelo, Rune Hartvig

The interaction between an intact protein and two lipophilic ions at an oil-water interface has been investigated using cyclic voltammetry, impedance based techniques and a newly developed method in which the biphasic oil-water system is analyzed by biphas ...

American Chemical Society2010

Oxygen reduction catalyzed by a fluorinated tetraphenylporphyrin free base at liquid/liquid interfaces

Hubert Girault, Manuel Alejandro Méndez Agudelo, Bin Su, Imren Hatay, Zdenek Samec

The diprotonated form of a fluorinated free base porphyrin, namely 5-(p-aminophenyl)-10,15,20-tris(pentafluorophenyl)porphyrin (H(2)FAP), can catalyze the reduction of oxygen by a weak electron donor, namely ferrocene (Fc). At a water/1,2-dichloroethane in ...

American Chemical Society2010

An experimental investigation of the surface potential in ferroelectric P(VDF-TrFE) FETs

Mihai Adrian Ionescu, Giovanni Antonio Salvatore, Alexandru Rusu

In this paper we report the fabrication and detailed electrical characterization of a ferroelectric transistor (Fe-FET) aiming at the extraction of its physical threshold voltage. The investigated transistors are fabricated on doped bulk silicon with a gat ...

2010

Topography and work function measurements of thin MgO(001) films on Ag(001) by nc-AFM and KPFM

Marina Pivetta

The surface topography and local surface work function of ultrathin MgO(001) films on Ag(001) have been studied by noncontact atomic force microscopy (nc-AFM) and Kelvin probe force microscopy (KPFM). First principles calculations have been used to explain ...

2010

Nonadiabatic Spin Torque Investigated Using Thermally Activated Magnetic Domain Wall Dynamics

Matthias Alexander Eltschka

Using transmission electron microscopy, we investigate the thermally activated motion of domain walls (DWs) between two positions in Permalloy (Ni80Fe20) nanowires at room temperature. We show that this purely thermal motion is well described by an Arrheni ...

2010

Fountain pen for scanning electrochemical microscopy

Hubert Girault, Andreas Stephan Lesch, Fernando Cortes Salazar, Dmitry Momotenko, Gunther Wittstock

A fountain pen probe has been developed to extend the scope of scanning electrochemical microscopy (SECM) experiments to dry surfaces. The fountain pen is fabricated by UV-photoablation of a polyethylene terephthalate (PET) film and consists on one side of ...

Royal Society of Chemistry2010

Studies of blob formation, propagation and transport mechanisms in basic experimental plasmas (TORPEX and CSDX)

Ambrogio Fasoli, Ivo Furno, Benoît Labit, Christian Gabriel Theiler, Stefan Müller

The findings of previous blob studies in the interchange-dominated regime of TORPEX helium (Müller et al 2007 Phys. Plasmas 14 110704) and hydrogen plasmas (Furno et al 2008 Phys. Rev. Lett. 100 055004) are summarized and compared. The onset of blobs is s ...

Institute of Physics2009

Studies of blob formation, propagation and transport mechanisms in basic experimental plasmas (TORPEX and CSDX)

Ambrogio Fasoli, Ivo Furno, Benoît Labit, Christian Gabriel Theiler, Stefan Müller

The findings of previous blob studies in the interchange-dominated regime of TORPEX helium (Muller et al 2007 Phys. Plasmas 14 110704) and hydrogen plasmas (Furno et al 2008 Phys. Rev. Lett. 100 055004) are summarized and compared. The onset of blobs is st ...

Institute of Physics2009

Graph Chatbot

Chattez avec Graph Search

Posez n’importe quelle question sur les cours, conférences, exercices, recherches, actualités, etc. de l’EPFL ou essayez les exemples de questions ci-dessous.

AVERTISSEMENT : Le chatbot Graph n'est pas programmé pour fournir des réponses explicites ou catégoriques à vos questions. Il transforme plutôt vos questions en demandes API qui sont distribuées aux différents services informatiques officiellement administrés par l'EPFL. Son but est uniquement de collecter et de recommander des références pertinentes à des contenus que vous pouvez explorer pour vous aider à répondre à vos questions.

Connectez-vous pour utiliser Chat avec Graph Search