Concept

Angular resolution

Related publications (490)

Near Field Optical Microscopy Imaging with a Free Electron Laser in the 1-10 Micron Spectral Range: Overview and Perspectives

The need to image objects on increasingly finer scales and spatially localized specific molecules can be met by the combination of infrared, visible and Raman spectroscopy with scanning near-field microscopy, giving rise to a powerful nanospectroscopic too ...

2011

High-resolution hard-x-ray microscopy using second-order zone-plate diffraction

Giorgio Margaritondo

Odd-order diffraction of zone plates (ZPs) is already used for x-ray microscopy but the potential offered by even-order diffraction must still be fully exploited. Width differences between lines and interline spaces transfer intensity from odd-order to eve ...

2011

Long-range simplex-coded BOTDA sensor over 120km distance employing optical preamplification

Marcelo Alfonso Soto Hernandez

In this Letter, we combine the use of optical preamplification at the receiver and optical pulse coding techniques with an optimized modulation format to effectively extend the sensing range of Brillouin optical time-domain anal ysis (BOTDA) sensors. Combi ...

2011

Network community-detection enhancement by proper weighting

Martin Hasler, Ali Ajdari Rad, Alireza Khadivi

In this article, we show how proper assignment of weights to the edges of a complex network can enhance the detection of communities and how it can circumvent the resolution limit and the extreme degeneracy problems associated with modularity. Our general ...

American Physical Society2011

Statistical analysis of rainfall intermittency at small spatial and temporal scales

Alexis Berne, Marc Schleiss, Joël Jaffrain

Rainfall intermittency is analyzed and quantified at small spatial and temporal scales using 2 years of radar and disdrometer data collected in Switzerland. Analytical models are fitted and used to describe the intermittency for spatial scales between 0 an ...

American Geophysical Union2011

Long-range BOTDA sensing using optical pulse coding and single source bi-directional distributed Raman amplification

Marcelo Alfonso Soto Hernandez

In this paper we present a Brillouin optical-time domain analysis (BOTDA) sensor combining optimized optical pulse coding with return-to-zero (RZ) modulation format and first-order bi-directional Raman amplification, using a single, shared, high relative-i ...

IEEE2011

Optimization of long-range BOTDA sensors with high resolution using first-order bi-directional Raman amplification

Marcelo Alfonso Soto Hernandez

In this paper we perform an optimization of Brillouin optical time-domain analysis (BOTDA) sensors for achieving high resolution over long sensing ranges using distributed Raman amplification. By employing an optimized first-order bi-directional Raman ampl ...

Optical Society of America2011

Fast Imaging of Blob Motion in TORPEX Plasmas

Ambrogio Fasoli, Ivo Furno, Davoud Iraji

To complement electrostatic probe measurements of plasma turbulence and study plasma structures with high spatial resolution, a nonperturbative direct imaging system has been developed on TORPEX. This system includes a fast framing Photron-APX-RS camera an ...

2011

Comparison of X-ray Nanotomography and FIB-SEM in Quantifying the Composite LSM/YSZ SOFC Cathode Microstructure

Christos Comninellis, Jan Van Herle, Marco Cantoni, Pietro Tanasini

X-ray nanotomography and focused ion beam scanning electron microscopy (FIB-SEM) provide unique opportunities to interrogate the 3D microstructure of solid oxide fuel cell (SOFC) electrodes with unprecedented spatial resolution with elemental specificity. ...

2011

Scanning Near-Field Optical Microscopy of Living Cells in Liquid, Elaboration of New SNOM Probes and Detection Methods

Kanat Dukenbayev

The aim of the present PhD thesis is the elaboration of new, home-made Scanning Near-field Optical Microscope (SNOM or NSOM), and the demonstration of its great potential for high-resolution topography and fluorescence investigations of soft and solid samp ...

EPFL2011

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