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Real-time mode analysis of fiber-to-fiber coupling processes using the correlation filter method
A frequent process in fiber optics is the fiber-to-fiber coupling where two fibers are aligned to efficiently transmit light from one to another waveguide. Such automated alignment processes are nowadays...
PublikationenAC losses in high pressure synthesized MgB2 bulk rings measured by a transformer method
Recently developed manufacturing technologies use high pressure and various doping additions to prepare bulk MgB2-based materials with a high critical current density measured by the magnetization method....
PublikationenPinning in MgB2- and YBaCuO-Based Superconductors: Effect of Manufacturing Pressure and Temperature
Bulk MgB2- and YBaCuO-based materials are competitive candidates for applications. The properties of both compounds can be significantly improved by high temperature-high pressure preparation methods....
PublikationenUncooled antenna-coupled terahertz detectors with 22μs response time based on BiSb/Sb thermocouples
We report on fast terahertz detectors based on antenna-coupled BiSb/Sb thermoelements operating at room temperature. A response time of the thermocouples as low as 22 μs and a NEP of 170 pW/sqrt(Hz) at...
PublikationenStructural Characterization of Insulin Fibril Surfaces using Tip Enhanced Raman Spectroscopy (TERS) NUR ABSTRACT
Amyloid fibrils are protein aggregates that are strongly associated with a variety of highly pathogenic diseases, such as Alzheimer’s disease, Creutzfeldt-Jakob disease, Parkinson disease, etc. Direct...
PublikationenUnraveling the Link between Molecular Conformation and Morphology and Mechanics of Amyloid Fibrils- NUR ABSTRACT
Nearly all proteins and peptides have the ability to self-assemble into amyloid fibrils when they are denatured. These highly ordered nanofibrils exhibit superior mechanical properties, and are therefore...
PublikationenPolymorphism of Amyloid Fibrils Formed by a Short Peptide from Yeast Prion Protein Sup35: AFM and Tip Enhanced Raman Scattering Study
Misfolding of prion protein and its subsequent aggregation is the cause of various prion related diseases. Prions are composed of aggregates of a misfolded prion protein. Although primary structure of...
PublikationenNote: Broadband cavity ring-down spectroscopy of an intra-cavity bulk sample
A cavity ring-down (CRD) setup equipped with a pulsed broadband light source (480 nm 99.93 %) allows to register loss changes of 5*E-5 with a spectral resolution of 0.3 nm in less than two minutes.
PublikationenDirekte Absorptionsmessung an dielektrischen Schichten und Festkörpern
Zur Charakterisierung sogenannter „low loss“ Optiken sowie zur Optimierung von Herstellungsprozessen (Bulkmaterial/Beschichtung) werden in zunehmendem Maße direkte Absorptionsmessverfahren eingesetzt....
PublikationenCharakterisierung von mit HMDSO beladenen Propan-Flammen mit-tels OES
Optische Emissionsspektroskopie (OES) wird vorwiegend zur Untersuchung von Plasmen eingesetzt. Sie eignet sich aber auch zur Charakterisierung von Flammen mit einer vorwiegend laminaren Strömung, da hier...
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