Sylvia Jeney

Cette personne n’est plus à l’EPFL

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Publications associées (27)

Three-dimensional force measurements in optical tweezers formed with high-NA micromirrors

László Forró, René Salathé, Fabrice Merenda, Mathieu Grossenbacher, Sylvia Jeney

The three-dimensional trap stiffness of optical tweezers formed with high-NA micromirrors is investigated by back-focal-plane interferometry and power spectrum analysis. Normalized stiffness values of kappa(xy)/P-trap =1.2(mu N/m)/mW and kappa(z)/P-trap = ...

Optical Society of America2009

Anisotropic memory effects in confined colloidal diffusion

László Forró, Branimir Lukic, Sylvia Jeney

The motion of an optically trapped sphere constrained by the vicinity of a wall is investigated at times where hydrodynamic memory is significant. First, we quantify, in bulk, the influence of confinement arising from the trapping potential on the sphere's ...

2008

Uniformly Dispersed Deposition of Colloidal Nanoparticles and Nanowires by Boiling

László Forró, Andrzej Kulik, Gerit Kulik, Jürgen Brugger, Jin Won Seo, Sylvia Jeney, Arnaud Magrez, Kyumin Lee, Martial Duchamp, Ravi Shankar Sundaram

Uniformly dispersed deposition of various nanoparticles (gold and silver of 20?50 nm) and nanowires (ZnO and VOx) on different surfaces (Si, GaAs, mica, and steel) was obtained by boiling colloid drops on preheated substrates. Our results suggest a deposit ...

AIP American Institute of Physics2007

Motion of a colloidal particle in an optical trap

László Forró, Andrzej Kulik, Branimir Lukic, Sylvia Jeney

Thermal position fluctuations of a colloidal particle in an optical trap are measured with microsecond resolution using back-focal-plane interferometry. The mean-square displacement MSD(t) and power spectral density are in excellent agreement with the theo ...

2007

Friction force microscopy as an alternative method to probe molecular interactions

László Forró, Andrzej Kulik, Sylvia Jeney

2005

Catalytically grown carbon nanotubes of small diameter have a high Young's modulus

László Forró, Andrzej Kulik, Andras Kis, Jin Won Seo, Branimir Lukic, Sylvia Jeney

American Chemical Society2005

Direct observation of nondiffusive motion of a Brownian particle

László Forró, Andrzej Kulik, Branimir Lukic, Sylvia Jeney

The thermal position fluctuations of a single micron-sized sphere immersed in a fluid were recorded by optical trapping interferometry with nanometer spatial and microsecond temporal resolution. We find, in accord with the theory of Brownian motion includi ...

2005

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