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Next generation of a sub-millimetre wave security camera utilising superconducting detectors
Based on the previously demonstrated concept of passive security screening utilising superconducting detectors, a next generation camera was developed to meet application demands. The new system was designed...
PublicationsLifetime improvement of micro-fabricated alkali vapor cells by atomic layer deposited wall coatings
Alumina (Al2O3), silicon dioxide (SiO2) and titanium dioxide (TiO2) films were examined for their suitability as a protection coating for micro-fabricated cesium vapor cells. The layers were deposited...
PublicationsHighly p-doped regions in silicon solar cells quantitatively analyzed by small angle bevelling and micro-Raman spectroscopy
Highly p-doped regions in multicrystalline silicon solar cells, such as the back surface field region, are analyzed by means of small angle beveling and micro-Raman spectroscopy. Small angle beveling and...
PublicationsSuperconducting niobium nitride thin films deposited by metal organic plasma-enhanced atomic layer deposition
Superconducting NbN¬x thin films were deposited by plasma enhanced-atomic layer deposition (PE-ALD) using the metal organic precursor (tert-butylimido)-tris (diethylamino)-niobium (TBTDEN) and hydrogen...
PublicationsNon-invasive imaging of intracellular lipid metabolism in macrophages by Raman microscopy in combination with stable isotopic labeling
Monocyte-derived macrophages play a key role in atherogenesis because their transformation into foam cells is responsible for deposition of lipids in plaques within arterial walls. The appearance of cytosolic...
PublicationsHeterojunction Based Hybrid Silicon Nanowire Solar Cell: Surface Termination, Photoelectron and Photoemission Spectroscopy Study
Silicon nanowires (SiNWs) combined with a conducting polymer are studied to constitute a hybrid organic / inorganic solar cell. This type of cell shows a particularly high interfacial area between SiNWs...
PublicationsSuperconductivity in multi-phase Mg-B-O compounds
Structures of MgB2-based materials manufactured under pressure (up to 2 GPa) by different methods having high superconducting performance and connectivity are multiphase and contain different Mg-B-O compounds....
PublicationsAlignment-free, all-spliced fiber laser source for CARS microscopy based on four-wave-mixing
An environmentally-stable low-repetition rate fiber oscillator is developed to produce narrow-bandwidth pulses with several tens of picoseconds duration. Based on this oscillator an alignment-free all-fiber...
PublicationsAn Approach to continuous on-site Monitoring of Contact Forces in Current Collectors by a Fiber Optic Sensing System
In the EU railway network, a multitude of railway companies runs their rolling stock on tracks which are not in their own responsibility. Consequently, permanent monitoring of security-relevant parameters...
PublicationsFabry-Pérot Cavity Based on Hollow-Core Ring Photonic Crystal Fiber for Pressure Sensing
An interferometric Fabry-Pérot cavity based on hollow-core ring photonic crystal fiber (HCR-PCF) for pressure sensing is proposed. The sensing head is formed by splicing a small section of HCR-PCF to...
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