Concept

Low-voltage electron microscope

Publications associées (307)

Toxicity study of nanostructures

The great achievement of nanotechnology is the controlled synthesis of a large variety of nanometer-size materials like needle-formed nanotubes, nanowires and two-dimensional graphene flakes. Due to their unique physico-chemical properties, these nanostruc ...

EPFL2012

Hidden defects in silicon nanowires

Cyril Cayron

Recent publications have reported the presence of hexagonal phases in Si nanowires. Most of these reports were based on 'odd' diffraction patterns and HRTEM images - 'odd' means that these images and diffraction patterns could not be obtained on perfect si ...

2012

Gold Nanoparticles Grown on Ionic Liquid-Functionalized Single-Walled Carbon Nanotubes: New Materials for Photothermal Therapy

Paul Joseph Dyson, Zhaofu Fei

Gold nanoparticles were grown on single-walled carbon nanotubes (SWNTs) coated with a thiol-functionalized ionic liquid resulting in the formation of core-shell structures referred to as SWNT-IL-Au nanohybrid materials. The nanohybrid materials were charac ...

Wiley-V C H Verlag Gmbh2012

Combined Cr and S poisoning in solid oxide fuel cell cathodes

Jan Van Herle, Aïcha Hessler-Wyser, Quentin Thomas Jeangros, Zacharie Wuillemin, Josef Andreas Schuler, Caroline Calderone

This work aims to compare the effect of combined chromium and sulfur contaminating conditions to the Cr contamination alone on the Cr poisoning mechanisms in (La,Sr)MnO3-(Zr,Y)O-2 solid oxide fuel cell (SOFC) cathodes. Whereas Cr2O3 and (Cr,Mn)(3)O-4 are f ...

Elsevier2012

Statistical analysis of oxides particles in ODS ferritic steel using advanced electron microscopy

Cécile Hébert, Nadine Baluc, Guillaume Lucas

In this work a combination of advanced transmission electron microscopy and spectroscopy techniques enabled a statistically significant analysis of various types of few nanometer size oxides particles in Fe-14Cr-2W-O.3Ti-0.3Y(2)O(3) ferritic steel. These m ...

Elsevier2012

Thermal annealing of molecular beam epitaxy-grown InGaN/GaN single quantum well

Nicolas Grandjean, Denis Martin, Nils Asmus Kristian Kaufmann

The effect of thermal annealing on In0.25Ga0.75N/GaN quantum wells grown by molecular beam epitaxy at 550 degrees C is investigated. A strong increase in the 300 K photoluminescence (PL) intensity is observed for samples annealed at 880 degrees C, while de ...

Iop Publishing Ltd2012

Defect Insensitive Light Emission in Blue Diode Materials Investigated by Electron Microscopy and Transmission Cathodoluminescence

Anas Mouti

We study in this thesis the structural origin of defect insensitive light emission in indium containing group-III nitride ternary alloys grown on sapphire, which are the active materials for the commercially available high brightness blue diodes. These str ...

EPFL2011

Oxidative Doping Renders Graphene Hydrophilic, Facilitating Its Use As a Support in Biological TEM

Henning Paul-Julius Stahlberg, Radosav Svetozara Pantelic

Graphene represents the first practical realization of crystalline supports in biological transmission electron microscopy (TEM) since their introduction over 30 years ago. The high transparency, minimal inelastic cross-section, and electrical conductivity ...

American Chemical Society (ACS)2011

Automated Detection and Segmentation of Synaptic Contacts in Nearly Isotropic Serial Electron Microscopy Images

Marco Cantoni, Graham Knott

We describe a protocol for fully automated detection and segmentation of asymmetric, presumed excitatory, synapses in serial electron microscopy images of the adult mammalian cerebral cortex, taken with the focused ion beam, scanning electron microscope (F ...

2011

Low-Voltage p- and n-Type Organic Self-Assembled Monolayer Field Effect Transistors

Francesco Stellacci, Kislon Voitchovsky

We report on p- and n-type organic self-assembled monolayer held effect transistors. On the base of quaterthiophene and fullerene units, multifunctional molecules were synthesized, which have the ability to self-assemble and provide multifunctional monolay ...

2011

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