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Enhanced signal intensity in matrix-free laser desorption ionization mass spectrometry by chemical modification of bionanostructures from diatom cell walls
RATIONALE: Laser desorption ionization for mass spectrometric measurements (LDI MS) is supported by nanostructured materials. This technique helps to overcome known limitations of matrix-assisted laser...
PublicationsGold nanowires enable plasmonics in optical fibers
PublicationsThe many facets of Raman spectroscopy for biomedical analysis
A critical review is presented to the use of linear and nonlinear Raman microspectroscopies in biomedical diagnostics of bacteria, cells and tissues. Linear Raman spectroscopy offers a wealth of chemical...
PublicationsInvestigation of all niobium Nano-SQUIDs based on sub-micrometer cross-type Josephson junctions
We report on the development of highly sensitive SQUIDs featuring sub-micrometer loop dimensions. The integration of high quality and low capacitance SIS Nb/AlOx/Nb cross-type Josephson tunnel junctions...
PublicationsUniaxial in-plane magnetization of iron nanolayers grown within an amorphous matrix
Conversion electron M€ossbauer spectroscopy is used to determine the magnetic ground state at zero magnetic field of four-monolayer thick amorphous iron layers as part of a CoFeB-Fe multilayer stack....
PublicationsMulticrystalline silicon thin film solar cells on glass with epitaxially grown emitter prepared by a two-step laser crystallization process
In this paper we demonstrate a two-step laser crystallization process for thin film silicon solar cells on glass. In a first step a 5 µm thick amorphous silicon layer is crystallized by a diode laser...
PublicationsMeasurement of effective refractive index differences in multimode optical fibers based on modal decomposition
We demonstrate the nondestructive measurement of the effective refractive index difference of two arbitrary modes within a multimode optical fiber by utilizing a tunable fber grating. We use a mechanical...
PublicationsPlasmonic nanoparticle synthesis and bioconjugation for bioanalytical sensing
Plasmonic nanoparticles, e.g. nanoscale particles consisting of noble metals, show high potential as transducer elements in novel optical sensors. Their optical properties are based on collective and coherent...
PublicationsStructure and functional properties of bulk MgB2 superconductors synthesized and sintered under pressure
The high pressure (50 MPa - 2 GPa) – high temperature synthesized MgB2 bulk materials are characterized by nearly theoretical density (1-2% porosity), 80-98% connectivity, extremely high critical current...
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