Influence (électrostatique)

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Publications associées (25)

Electrostatic-Spray Ionization Mass Spectrometry

Hubert Girault, Natalia Gasilova, Liang Qiao, Yu Lu, Elena Tobolkina, Romain Sartor

An electrostatic-spray ionization (ESTASI) method has been used for mass spectrometry (MS) analysis of samples deposited in or on an insulating substrate. The ionization is induced by a capacitive coupling between an electrode and the sample. In practice, ...

Amer Chemical Soc2012

Can a Metal Surface Repel Electric Charges?

Primoz Rebernik Ribic

We show that the interaction between a surface and a charge packet moving parallel to it can become repulsive above a critical relativistic energy. We find that this is true for a lossless dielectric surface and also for a Drude metallic surface-in apparen ...

American Physical Society2012

Preparation of Translationally Cold Neutral Molecules

Andreas Osterwalder, Giulia Di Domenicantonio, Benjamin Bertsche

Efforts at EPFL to obtain translationally cold neutral molecules are described. Active deceleration of polar molecules is performed by confining the molecules in moving three-dimensional electrostatic traps, and by appropriately choosing the velocity of th ...

2011

Analysis and study of novel terpolymers composed of acrylamide, mono-charged and double-charged cationic monomers

Jutta Christine Wandrey, Peter Käuper, Ricardo Losada Mateo

The composition of novel terpolymers containing acrylamide (A), acryloyloxyethyltrimethylammonium chloride (Q), and bis-1,3(N,N,N-trimethylammonium)-2-propylmethacrylate dichloride (M) was analyzed combining FTIR and potentiometric titration. Calibration w ...

2009

Developing Improved Charge Sets for the Modeling of the KcsA K+ Channel Using QM/MM Electrostatic Potentials

Ursula Röthlisberger, Denis Bucher, Leonardo Guidoni

The performance of popular molecular mechanics (MM) force fields in treating problems that involve ion-channel interactions is explored. We have used quantum mechanical/molecular mechanical (QM/MM) calculations to compute the electrostatic potential inside ...

2009

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