6814 Suchergebnisse für: „“
Highly efficient Yb-doped silica fibers prepared by powder sinter technology
We report on the characteristics of an active fiber with core material made by sintering of Yb-doped silica powders as an alternative to conventional modified chemical vapor deposition (MCVD) technique....
PublikationenAnisotropy of the paramagnetic susceptibility of NdGaO3 single crystals
The tensor of the paramagnetic susceptibility χ of NdGaO3 single crystals was determined with high accuracy in the temperature range of T = (5-300) K. A vibrating sample magnetometer was used to determine...
PublikationenDirect observation of antiferromagnetically oriented spin vortex states in magnetic multilayer elements
We report on the coupling of spin vortices in magnetic multilayer elements. The magnetization distribution in thin film disks consisting of two ferromagnetic layers separated by a nonmagnetic spacer is...
PublikationenCharacterization of a digital squid for magnetic field measurements with high dynamic range
Measurements of extremely weak magnetic fields in unshielded environments require sensors providing a high dynamic range and slew rate while maintaining a high resolution. At present, analog Superconducting...
PublikationenInvestigation of the relationship between the gray zone and the clock frequency of a Josephson comparator
The Josephson comparator is one of the fundamental building blocks of Rapid Single Flux Quantum (RSFQ) electronics. Within this electronic family it is the exclusive device which provides logical data...
PublikationenField-stable SQUID magnetometer with sub-fT/Hz1/2 resolution based on sub-micrometer cross-type Josephson tunnel junctions
We report on the development of a new family of magnetic field sensors with exceptionally low magnetic field noise as low as 0.3 fT/Hz1/2. Beside this, they exhibit high usable voltage swings of more than...
PublikationenDesign of all-normal dispersion microstructured optical fibers for pulse-preserving supercontinuum generation
Recently, the generation of coherent, octave-spanning, and recompressible upercontinuum (SC) light has been demonstrated in optical fibers with all-normal group velocity dispersion (GVD) behavior by femtosecond...
PublikationenResponsivity and detectivity modelling of thermal radiation sensors based on a biased thermocouple
Thermal radiation sensors are based on two signal transduction stages: radiation to thermal and thermal to electrical. The most common of these sensors are the radiation thermocouple using the Seebeck...
PublikationenPermanent bending and alignment of ZnO nanowires
Ion beams can be used to permanently bend and re-align nanowires after growth. We have irradiated ZnO nanowires with energetic ions, achieving bending and alignment in different directions. Not only the...
PublikationenTowards high-sensitivity and high-resolution submillimeter-wave video imaging
Against a background of newly emerged security threats the well-established idea of utilizing submillimeter-wave radiation for personal security screening applications has recently evolved into a promising...
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