6814 Suchergebnisse für: „“

Design and implementation of cryogenic semiconductor amplifiers as interface between RSFQ circuits

Rapid single flux quantum (RSFQ) circuits create high interest in cryogenic amplifiers as interface to commercial room temperature electronics. The requirements for the amplifiers are an extremely high...

Nanobiophotonics: photons that shine their light on the life at the nanoscale

Tunable light source for narrowband laser excitation: application to Raman spectroscopy

In many laser spectroscopic techniques, such as fluorescence Raman and resonance Raman spectroscopy the choice of laser excitation wavelength is of central importance. Thus, it is desirable to have a single...

Gold and gold-silver core-shell nanoparticle constructs with defined size based on DNA hybridization

Nanoparticles represent versatile building blocks in material science and nanotechnology. Thereby, the defined assembly of nanostructures (13 and 56 nm in diameter, respectively) is of significant importance....

Toward in Vivo Chemical Imaging of Epicuticular Waxes

Epicuticular waxes, which are found on the outer surface of plant cuticles, are difficult to study in vivo. To monitor the growth, development, and structural alterations of epicuticular wax layers, coherent...

Raman and FTIR imaging of lung tissue: bronchopulmonary sequestration

Bronchopulmonary sequestration (BPS) involves abnormal pulmonary tissue lacking trancheobronchial connection and having a separate vascular supply that arises from the thoracic or abdominal aorta. For...

Synthesis Mechanisms of Organized Gold Nanoparticles: Influence of Annealing Temperature and Atmosphere

We report on the synthesis of organized arrays of gold (Au) nanoparticles on thermally oxidized Si wafers using sputtering as a metal deposition method in combination with sphere lithography. This simple...

Identification and differentiation of single cells from peripheral blood by Raman spectroscopic imaging

Medical diagnosis can be improved significantly by fast, highly sensitive and quantitative cell identification from easily accessible body fluids. Prominent examples are disseminated tumor cells circulating...

Employing polyethylene as contacting agent between ATR-crystals and solid samples with hard surfaces

Using a single crystal of fresnoite (Ba2TiSiO8), we demonstrate that polyethylene (PE) can be used as a contacting agent to enable the recording of ATR-spectra of materials with hard surfaces. The performance...

Pulse preserving flat-top supercontinuum generation in all-normal dispersion photonic crystal fibers

Supercontinuum (SC) generation in all-normal dispersion photonic crystal fiber under high energy femtosecond pumping is numerically investigated. It is shown that coherent octave spanning SC spectra with...