Publications associées à Cercle de confusion

The perils of taxonomic inconsistency in quantitative palaeoecology: experiments with testate amoeba data

A fundamental requirement of quantitative palaeoecology is consistent taxonomy between a modern training set and palaeoecological data. In this study we assess the possible consequences of violation of this requirement by simulating taxonomic errors in tes ...

2011

Phase extraction in speckle interferometry by a circle fitting procedure in the complex plane

Pierre Jacquot, Sébastien Equis

In speckle interferometry (SI), temporal signals are amplitude- and frequency-modulated signals and exhibit a fluctuating background. Prior to phase computation, this background intensity must be eliminated. Here our approach is to build a complex signal f ...

Optical Society of America2011

Subwavelength-size solid immersion lens

Hans Peter Herzig, Toralf Scharf, Myun Sik Kim

We report on the fabrication and characterization of nanoscale solid immersion lenses (nano-SILs) with sizes down to a subwavelength range. Submicrometer-scale cylinders fabricated by electron-beam lithography are thermally reflowed to form a spherical sha ...

2011

On the Age of Pseudonyms in Mobile Ad Hoc Networks

Jean-Yves Le Boudec, Jean-Pierre Hubaux, Julien Freudiger

In many envisioned mobile ad hoc networks, nodes are expected to periodically beacon to advertise their presence. In this way, they can receive messages addressed to them or participate in routing operations. Yet, these beacons leak information about the n ...

2010

Extended depth-of-focus by digital holographic microscopy

Christian Depeursinge, Tristan Colomb, Etienne Cuche, Nicolas Pavillon, Jonas Kühn

A recurrent problem in microscopy is the finite depth-of-focus linked to the NA of microscope objectives. Digital holographic microscopy (DHM) has the unique feature of being able to numerically change the focus from a single hologram without the need of m ...

Optical Society of America2010

In Vivo extended focus Optical Coherence Microscopy of endocrine islets of Langerhans in mice

Theo Lasser, Michael Friedrich, Rainer Leitgeb, Anne Grapin-Botton, Martin Villiger, Joan Goulley

Rapid acquisition of volumetric data is a mandatory prerequisite for small animal in vivo imaging. Due to its high sensitivity and capacity to extract the sample depth profile in parallel Fourier Domain Optical Coherence Tomography (FDOCT) complies with th ...

2009

Low-dose aberration corrected cryo-electron microscopy of organic specimens

Henning Paul-Julius Stahlberg

Spherical aberration (C-s) correction in the transmission electron microscope has enabled sub-angstrom resolution imaging of inorganic materials. To achieve similar resolution for radiation-sensitive organic materials requires the microscope to be operated ...

Elsevier BV2008

Efficient current injection scheme for nitride vertical cavity surface emitting lasers

Nicolas Grandjean, Jean-François Carlin, Raphaël Butté, Eric Feltin, Julien Dorsaz, Antonino Francesco Castiglia, Dobri Simeonov

The authors report the realization of InGaN/GaN light emitting diodes (LEDs) with an electrical injection design suitable for vertical cavity surface emitting lasers. Controlled oxidation of an AlInN interlayer lattice matched to GaN allows confining the i ...

2007

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Cercle de confusion

The perils of taxonomic inconsistency in quantitative palaeoecology: experiments with testate amoeba data

Phase extraction in speckle interferometry by a circle fitting procedure in the complex plane

Subwavelength-size solid immersion lens

On the Age of Pseudonyms in Mobile Ad Hoc Networks

Extended depth-of-focus by digital holographic microscopy

In Vivo extended focus Optical Coherence Microscopy of endocrine islets of Langerhans in mice

Soft-tissue phase-contrast tomography with an x-ray tube source

Low-dose aberration corrected cryo-electron microscopy of organic specimens

Perceived speed differences explain apparent compression in slit viewing

Efficient current injection scheme for nitride vertical cavity surface emitting lasers

Graph Chatbot

Chattez avec Graph Search

Phase extraction in speckle interferometry by a circle fitting procedure in the complex plane

Extended depth-of-focus by digital holographic microscopy

Low-dose aberration corrected cryo-electron microscopy of organic specimens

Subwavelength-size solid immersion lens

The perils of taxonomic inconsistency in quantitative palaeoecology: experiments with testate amoeba data

On the Age of Pseudonyms in Mobile Ad Hoc Networks

In Vivo extended focus Optical Coherence Microscopy of endocrine islets of Langerhans in mice

Soft-tissue phase-contrast tomography with an x-ray tube source

Perceived speed differences explain apparent compression in slit viewing

Efficient current injection scheme for nitride vertical cavity surface emitting lasers