Concept

Speed of light

Related publications (326)

Indocyanine green as a prospective sensitizer for photodynamic therapy of melanomas

Spectroscopic, photochemical and biological properties of indocyanine green (ICG) are presented. Light over 800 nm is effectively absorbed by ICG. This property as well as photochemical behaviour of ICG make it a very suitable dye for photodynamic treatmen ...

Polish Academy of Sciences / Acta Biochimica Polonica2002

Enhanced resonant backscattering of excitons in disordered quantum wells

Vincenzo Savona

A clear signature of enhanced backscattering of excitons is observed in the directional resonant Rayleigh scattering of light from localized two-dimensional excitons in disordered quantum wells. Its spectral dependence and time dynamics are measured and th ...

2002

Measuring amplitude and phase distribution of fields generated by gratings with sub-wavelength resolution

Hans Peter Herzig, René Dändliker

In this paper, we intend to gain an understanding of the interaction of light with microstructures. Measurements of amplitude and phase in the diffracted field close to gratings using a heterodyne scanning probe are presented. Coherent light diffracted by ...

2002

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

Coated, light-transmitting or reflecting substrate, used as optical component or window, e.g. lens, mirror or windscreen, has (per)fluoroalkylsilane coating produced by plasma etching, hydration, drying and gas phase deposition

Patrik Willi Hoffmann, Laura Barbieri

A method for the gas phase deposition of partially fluorinated or perfluorinated alkyl silanes onto a substrate in a reaction chamber includes cleaning the substrate, hydrating the substrate with steam, drying the substrate and silanization of the substrat ...

SWISSOPTIC AG (SWIS-Non-standard) ECOLE POLYTECHNIQUE FEDERALE LAUSANNE (ECOL-Non-standard)2002

The OFMET Watt Balance: Progress Report

René Dändliker

A new type of moving-coil Watt balance with a compact design is under construction at the Swiss Federal Office of Metrology (OFMET). Recently, several key components of the system have been characterized. In this paper, a detailed description of the mechan ...

2001

Tandem cell for water cleavage by visible light

A tandem cell or photoelectrochemical system for the cleavage of water to hydrogen and oxygen by visible light has two superimposed photocells, both cells being connected electrically. The photoactive material in the top cell is a semiconducting oxide plac ...

(Ecole Polytechnique Federale de Lausanne (EPFL), Switz.).2001

Photochimie dans le champ proche

In view of future generations of biosensors, the immobilization of biomolecules onto selected materials with a well controlled topical addressability is of primary importance. Photoimmobilization is a technique allowing the immobilization of a biomolecule ...

EPFL2000

Performance of a Chromatic Adaptation Transform Based on Spectral Sharpening

Sabine Süsstrunk

The Bradford chromatic adaptation transform, empirically derived by Lam, models illumination change. Specifically, it pro-vides a means of mapping XYZs under a reference light source to XYZs for a target light source such that the corresponding XYZs produc ...

2000

Atomic structure and hyperfine spectrum of Pb-type defects at Si-Sio(2) interfaces: An ab-initio investigation

Alfredo Pasquarello, Roberto Car

Using a first-principles approach, we characterize P-b-type defects at Si-SiO2 interfaces by calculating hyperfine parameters for several relaxed structural models. Application to the Pb center at the Si(111)-SiO2 interface, for which the atomic structure ...

2000

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