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Sputtered Amorphous Silicon Thin Films for Diode Laser Crystallization
Multicrystalline silicon thin films with large grains (100 µm) on glass are useful for thin film solar cells and for thin film transistors. These films can be prepared by diode laser irradiation of amorphous...
PublicationsCharacterization of Grain Boundary Geometry in the TEM, exemplified in Si thin films
It has been long observed that phenomena associated with grain boundaries (GB) in metals (e.g. corrosion, energy, segregation, etc) are influenced by the grain boundary geometry. For many years the coincidence...
PublicationsSelf-catalyzed, vertically aligned GaN rod-structures by metal-organic vapor phase epitaxy
This paper will discuss the influence of parameters such as temperature, V/III ratio, atmosphere and pressure on the vertical growth of GaN rod-structures on sapphire by metalorganic vapor phase epitaxy....
PublicationsTowards local growth of individual nanowires on 3D microstructures by using a minimally-invasive catalyst templating method
We present a novel minimally invasive post-processing method for catalyst templating based on focused charged particle beam structuring, which enables a localized Vapor-Liquid-Solid (VLS) growth of individual...
PublicationsA precise optical determination of nanoscale diameters of semiconductor nanowires
Electrical and optical properties of semiconducting nanowires (NWs) strongly depend on their diameters. Therefore, a precise knowledge of their diameters is essential for any kind of device integration....
PublicationsStatistical model on the optical properties of silicon nanowire mats
Randomly grown silicon nanowire (SiNW) mats show a high light absorption even for long wavelengths despite the small volume of silicon. We present a statistical model that gives a physical understanding...
PublicationsTwo-color Raman spectroscopy for the simultanous detection of chemotherapeutics and antioxidative status of human skin
Aiming at the development of strategies to prevent the hand-foot-syndrome, we propose evaluation of the amount of chemotherapeutics in the human skin together with carotenoids the latter serving as marker...
PublicationsSynthesis and Resonance Energy Transfer Study on a Random 2 Terpolymer Containing a 2-(Pyridine-2-yl)thiazole Donor-Type Ligand 3 and a Luminescent [Ru(bpy)2(2-(triazol-4-yl)pyridine)]2+ Chromophore
A statistical terpolymer, containing a 2-(pyridine-2-yl)-1,3-thiazole donor-type system and an acceptor-type [Ru(bpy)2-(2-(triazol-4-yl)pyridine)]2+ chromophore as well as methyl methacrylate as comonomer,...
PublicationsCharacterizing cytochrome c states – TERS studies of whole mitochondria
Protein structures (cytochrome c) were visualized by TERS measurements on whole mitochondria referring to specific spectral features describing the electronic state of the heme moiety
PublicationsLight-narrowed optically pumped Mx-magnetometer with miniaturized Cs cell
We demonstrate a new way of operating an optically pumped magnetometer with miniaturized cesium cell using the light-narrowing effect. The magnetometer setup shows improvement of shot-noise limited sensitivity...
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