Concept

Lame (microscopie)

Publications associées (76)

Fluorescence correlation spectroscopy

Fluorescence Correlation Spectroscopy (FCS) has become an important tool for measuring diffusion, concentration and molecular interactions in biomolecular systems. Two major requirements for FCS are good collection efficiency and a small and well defined e ...

EPFL2006

Tomography using multiple wavelengths in digital holographic microscopy

Frédéric Montfort

This thesis presents a new tomographic imaging method using multiple wavelengths in digital holographic microscopy. It is based on the addition of several reconstructed wavefronts measured at different wavelengths. The resulting diffraction tomographic vis ...

EPFL2006

PhotoMEA: development of optical tools for the study of the functional properties of neuronal networks

Diego Ghezzi

A large number of studies on neuronal physiology and plasticity have provided a detailed picture of the molecular machinery underlying the modulation of neuronal activity. On the contrary, the mechanisms controlling properties of complex neuronal networks ...

2006

Portable optical microscope-on-a-chip

Demetri Psaltis

In this paper, we present a novel high resolution optical imaging device on chip. It is based on a line of nano holes defined in an optically opaque aluminum film on a CMOS imaging sensor chip. Because it's free of bulky optical elements and compatible to ...

2006

Fabrication of arrays of sub-wavelength nano-apertures in an optically thick gold layer on glass slides for optical studies

Theo Lasser, Patrik Willi Hoffmann, Benjamin Dwir, Ivo Utke, Marcel Leutenegger

We report on the fabrication of two-dimensional arrays of nano-optical apertures in gold layers by electron beam lithography (EBL) on a transparent glass substrate. 30 x 30 μ m(2) large arrays of high aspect ratio sub-wavelength cylinders (400 nm diameter ...

2005

Flexible micro manipulation platform based on tethered cm3-sized mobile micro robots

Jean-Marc Breguet, Walter Driesen

This paper presents a micro manipulation platform based on several cm3-sized mobile micro robots. The proposed platform consists of a high resolution XY stage with the mobile micro robots on top of it, a camera with a microscopic objective for the local vi ...

2005

Deconsolidation in glass mat thermoplastic composites : Analysis of the mechanisms

Véronique Michaud

During reheating and post-processing of thermoplastic-based composites, deconsolidation is often observed: the volume fraction fibre decreases and the void content increases. In this article, the phenomena leading to deconsolidation are investigated, with ...

2005

High light field confinement for Fluorescence Correlation Spectroscopy using a Solid Immersion Lens

Theo Lasser, Denis Martin, Ramachandra Rao

In this paper we present recent single molecule detection experiment using a solid immersion lens (SIL) for fluorescent correlation spectroscopy measurements. We compared the performance of the SIL in combination with an air objective (40×, numerical apert ...

2004

Intercellular communication: role of gap junctions in establishing the pattern of ATP-elicited Ca2+ oscillations and Ca2+-dependent currents in freshly isolated aortic smooth muscle cells

Jean-Jacques Meister, Jean-Louis Bény

Cytosolic-free [Ca2+] was evaluated in freshly dissociated smooth muscle cells from mouse thoracic aorta by the ratio of Fura Red and Fluo 4 emitted fluorescence using confocal microscopy. The role of intercellular communication in forming and shaping ATP- ...

Elsevier2004

Reinforcement of single-walled carbon nanotube bundles by intertube bridging

Jürgen Brugger, László Forró, Andras Kis, Andrzej Kulik, Willy Benoit

During their production, single-walled carbon nanotubes form bundles. Owing to the weak van der Waals interaction that holds them together in the bundle, the tubes can easily slide on each other, resulting in a shear modulus comparable to that of graphite. ...

2004

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