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Waveguide modes spatially resolved by low-loss STEM-EELS

Publications associées (40)

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Tobacco Mosaic Virus (TMV) is composed of 2130 identical coat protein subunits following the right-handed helix of an accompanying RNA strand to produce a 300 nm hollow cylinder with an outer diameter of 18 nm and a 4 nm wide central channel. In this work, ...

EPFL2006

TEM study of a silicate-carbonate-microbe interface prepared by focused ion beam milling

Philippe Gillet

The biogeochemical alteration of an Mg-Fe orthopyroxene, reacted for 70 yr under and conditions in a desert environment, was Studied by transmission electron microscopy. For this purpose, an electron transparent cross-section of the interface between a sin ...

2005

Investigation of hexagonal and cubic GaN by high-resolution electron energy-loss spectroscopy and density functional theory

Cécile Hébert

High-resolution electron energy-loss spectroscopy in a transmission electron microscope is a very powerful method for the study of electronic structure of materials. The fine structure of Ga L2,3 and N ionization edges in c-GaN and h-GaN was studied using ...

2004

Thickness dependent loss function of Si with 0.14 eV energy resolution

Cécile Hébert

The use of electron energy loss spectroscopy (EELS) in determining the electronic properties of Si and thickness dependent loss function of Si with 0.14 eV energy resolution were investigated. The dielectric response function was used to describe the inter ...

2004

Information for phase identification may be gathered in the electron transmission microscope with spatial resolution down to the nanometre scale. Energy dispersive X-ray and electron energy loss spectrometries are based on inelastic electron/sample interac ...

2004

A proposal for dichroic experiments in the electron microscope

Cécile Hébert

Building upon the similarities between inelastic electron scattering and X-ray absorption we show that dichroism can be observed in electron energy loss spectrometry (EELS) in the transmission electron microscope (TEM). Natural or magnetic linear dichroism ...

2003

Electron beam induced deposition of rhodium nanostructures

Fabio Cicoira

Electron Beam Induced Deposition (EBID) allows deposition of three-dimensional micro- and nano-structures of conductive and insulating materials on a wide range of substrates. The process is based on the decomposition of molecules of a pre-selected precurs ...

EPFL2002

Reflection of waveguided X-rays in two-dimensional nanostructures

Christian David

The internal reflection of an excited X-ray waveguide mode in a synthetic nanostructure, defined by electron-beam lithography, has been measured. In this device, the X-ray beam is first coupled into a conventional vertical thin-film waveguide structure and ...

2002

Evaluation of InP/InGaAsP distributed Bragg reflectors grown by chemical-beam epitaxy

Elyahou Kapon, Jean-François Carlin, Alok Rudra, Klaus Leifer

We have evaluated the structure of high-reflectivity InP/InGaAsP distributed Bragg reflectors grown by chemical-beam epitaxy at a growth rate of 3 mu m/h. Transmission electron microscopy combined with electron energy loss spectroscopy indicate lateral flu ...

1998

Microstructure and Hydroabrasive Wear Behavior of High-Velocity Oxy-Fuel Thermally Sprayed Wc-Co(Cr) Coatings

Alireza Karimi

Sand erosion tests were performed on WC-Co and WC-CoCr coatings deposited by the high velocity oxy-fuel spraying method. Several analytical techniques, including X-ray diffraction, Auger electron spectroscopy and energy-dispersive spectroscopy in a transmi ...

1993