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An ac quantum voltmeter based on a 10V programmable Josephson array
An ac quantum voltmeter based on a 10V programmable Josephson array that is simple to use, provides dc and ac calibration up to kHz range for equipment widely used in metrology, and ensures direct traceability...
PublicationsErzeugung von Faser-Bragg-Gittern in Saphirfasern für die Hochtemperatursensorik
Die Verwendung von Faser-Bragg-Gittern (FBG) in Quarzglasfasern hat sich in der Sensorik in den letzten zwei Jahrzehnten etabliert. Sie finden in vielen technischen Bereichen Anwendung, insbesondere zur...
PublicationsMultidirectional Illuminating Optical Fiber Tip on Beam Expanding Coreless Silica Fiber
We report a compact all-optical side-firing probe directly ablated on a mode-expanded hybrid fiber end using a high-precision femtosecond laser processing technique. A segment of coreless silica fiber...
PublicationsNumerical characterization of piezoelectric resonant transducer modes for acoustic wave excitation in optical fibers
The control of light in optical fibers by acoustic waves often requires a piezoelectric transducer as acoustic driver. As the fiber acoustic excitation depends on the deformation and frequency of the transducer,...
PublicationsFluorine incorporation into porous silica by gas phase doping with C2F6 in N2
The incorporation of fluorine into porous silica by gas phase doping with hexafluoroethane C2F6 in N2 was studied using thermodynamic calculations and complementary fluorination experiments up to 1300...
PublicationsInsights into the Mechanism of Polymer Coating Self-Healing Using Raman Spectroscopy
Self-healing polymer coatings are an emerging class of smart materials. Upon mechanical damage the material properties may be restored by self-healing, which can be triggered externally, e.g. by an increased...
PublicationsDispersion analysis of triclinic K2Cr2O7
Polarized IR-reflection spectra of a single crystal of K2Cr2O7 were recorded at near normal incidence. Dispersion analysis was applied, taking fully into account the triclinic symmetry of the crystal and...
PublicationsOptical properties of cerium-codoped high power laser fibers
The photodarkening resistivity of ytterbium doped alumosilicate fibers can be remarkably improved by cerium codoping. Here we report on systematical investigations of the influence of cerium on an optimized...
PublicationsDominant Vinculin Binding Angle in Podosomes Revealed by High Resolution Optical Microscopy
Podosomes are dynamic actin-rich cell-matrix adhesion sites of migrating and invasive cells such as macrophages and osteoclasts, and are receiving increasing attention due to their possible involvement...
PublicationsA Heteroleptic Bis(tridentate) Ruthenium(II) Platform Featuring an Anionic 1,2,3-Triazolate-Based Ligand for Application in the Dye- Sensitized Solar Cell
A series of bis(tridentate) ruthenium(II) complexes featuring 2,2′:6′,2′′-terpyridine, functionalized with anchoring groups, and new anionic 1,2,3-triazolate-based tridentate ligands is presented....
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