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Preparation and characterisation of optical fiber tips for nanoscopic applications
Silica-based fiber tips are used in a variety of spectroscopic, micro- or nanoscopic optical sensor applications. The efficiency of such measurement systems is dependent on the tip geometry and the diameter...
PublicationsFluorescence Study of Energy Transfer in PMMA Polymers with pendant Oligo-Phenylene-Ethynylenes
A spectroscopic characterization of polymers containing rigid π-conjugated oligo (phenyleneethynylene) chromophores as well as oligo(phenyleneethynylene) and methyl methacrylate is presented. The polymers...
PublicationsMicrostructured fibers for sensitive strain transducers
Bragg gratings fabricated in a photonic crystal fiber can function as extremely sensitive, temperature-independent strain sensors.
PublicationsAnalytische Chemie 2010/2011
Mit Nanoporen detektieren elektrochemische Biosensoren einzelne Moleküle, Nanopartikel aus molekular geprägten Polymeren erkennen Proteine und Nukleinsäuren, und Nano strukturen verstärken die Signale...
PublicationsStrain Sensitivity Enhancement in Suspended Core Fiber Tapers
Suspended core fiber tapers with different cross sections (with diameters from 70 μm to 120 μm) are produced by filament heating. Before obtaining the taper, the spectral behavior of the suspended core...
PublicationsEarly stages of oxide growth in H-terminated silicon nanowires: determination of kinetic behavior and activation energy
Silicon nanowires (Si NWs) terminated with hydrogen atoms exhibit higher activation energy under ambient conditions than equivalent planar Si(100). The kinetics of sub-oxide formation in hydrogen-terminated...
PublicationsPhase shifting technique for extended inline holographic microscopy with a pinhole array
Digital inline holographic microscopy using a pinhole for sample illumination allows lensless imaging. To overcome restrictions of the sample size and density in the setup additional reference waves are...
PublicationsStructure and composition of insulin fibril surfaces probed by TERS
Amyloid fibrils associated with many neurodegenerative diseases are the most intriguing targets of modern structural biology. Significant knowledge has been accumulated about the morphology and fibril-core...
PublicationsDesign, realization and characteristics of a transition edge bolometer for sub-millimeter wave astronomy
The large array bolometer camera is scheduled to succeed its semiconducting predecessor at the Atacama pathfinder experiment. It shall be an array of 300 transition edge sensors operated at a temperature...
PublicationsFrom molecular structure to tissue architecture: collagen organization probed by SHG microscopy
Second-harmonic generation (SHG) microscopy is a fantastic tool for imaging collagen and probing its hierarchical organization from molecular scale up to tissue architectural level. In fact, SHG combines...
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