Concept

Electromagnetic absorption by water

Related publications (303)

Absorption spectroscopy of three-dimensional bacteriorhodopsin crystals at cryogenic temperatures: effects of altered hydration

Majed Chergui, Erwin Portuondo Campa, Selma Schenkl

A comparative study of absorption spectroscopy at 100 K has been performed on three-dimensional crystals of bacteriorhodopsin extd. from a lipidic cubic phase and on native purple membrane. A modified microspectrophotometer has been designed which yields a ...

2006

Frequency-stabilised laser reference system for trace-gas sensing applications from space

Luc Thévenaz, Sang Hoon Chin, Laura Abrardi, Daniela Werner

A four-wavelength low-power continuous-wave frequency laser reference system has been realised in the 935.4-nm range for water vapour differential absorption lidar (DIAL) applications. The system is built around laboratory extended-cavity and DFB diode las ...

ESA2006

Solvation dynamics at liquid/metal-IV oxide interfaces

Erwin Portuondo Campa

This thesis presents a comparative study of the ultrafast solvation dynamics of liquids in bulk conditions, and at the interfaces of metal-IV oxides (specifically TiO2 and ZrO2), using ultrafast spectroscopy techniques. In the first part of the thesis we r ...

EPFL2006

Microsolvation effects on the excited state dynamics of protonated tryptophan

Ursula Röthlisberger, Thomas Rizzo, Ivano Tavernelli, Michele Cascella, Sébastien Mercier, Matteo Guglielmi

To better understand the complex photophysics of the amino acid tryptophan, which is widely used as a probe of protein structure and dynamics, we have measured electronic spectra of protonated, gas-phase tryptophan solvated with a controlled number of wate ...

2006

Novel Helmholtz-based photoacoustic sensor for trace gas detection at ppm level using GaInAsSb/GaAlAsSb DFB lasers

Luc Thévenaz, Mario Mattiello

A new and compact photoacoustic sensor for trace gas detection in the 2-2.5 μm atmospheric window is reported. Both the development of antimonide-based DFB lasers with singlemode emission in this spectral range and a novel design of photoacoustic cell adap ...

Elsevier2006

Multi-hydrogenated compounds monitoring in optical fibre manufacturing process by photoacoustic spectroscopy

Luc Thévenaz, Jean-Philippe Besson

Sub-ppm hydrogen chloride (HCl) and water vapour (H2O) monitoring using photoacoustic spectroscopy in optical fibre manufacturing is reported. The development and performance of a sensor based on an acoustic resonant configuration is described, and on-site ...

Springer Verlag2006

Third harmonic X-mode absorption in a top-launch configuration on the TCV tokamak

Stefano Alberti, Jean-Philippe Hogge, Laurie Porte, Gilles Arnoux

In addition to the second harmonic X-mode (X2) electron cyclotron heating (ECH), the TCV ECH system has been completed with three 450 kW gyrotrons operating at the frequency of 118 GHz for third harmonic X-mode (X3) in a top-launch configuration. In the re ...

2005

Spectroscopie optique de petits agrégats d'argent et d'or déposés dans une matrice d'argon

Fabien Conus

The absorption spectra of small silver and gold clusters are presented. The experimental technique consists in depositing clusters in an argon matrix which is illuminated with white light. By collecting the outcoming light from the matrix and by analysing ...

EPFL2005

Infrared properties of the Si-SiO2 interface from first principles

Feliciano Giustino

We study the infrared properties of the Si-SiO2 interface within a first-principles approach. In order to provide an atomic-scale description of the dielectric permittivity (both high-frequency and static) and of the infrared absorption at the interface, w ...

EPFL2005

Chauffage de plasma par ondes électromagnétiques à la troisième harmonique de la fréquence cyclotron des électrons dans le tokamak TCV

Gilles Arnoux

The Tokamak à Configuration Variable (TCV) programme is based on flexible plasma shaping capabilities together with a powerful electron cyclotron wave (ECW) additional heating for studies of stability, confinement, transport, control and power exhaust. In ...

EPFL2005

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