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Raman spectroscopic investigation of 13CO2 labeling and leaf dark respiration of Fagus sylvatica L. (European beech)
An important issue, in times of climate change and more extreme weather events, is the investigation of forest ecosystem reactions to these events. Longer drought periods stress the vitality of trees and...
PublikationenRapid monitoring of intermediate states and mass balance of nitrogen during denitrification by means of cavity enhanced Raman multi-gas sensing
The comprehensive investigation of changes in N cycling has been challenging so far due to difficulties with measuring gases such as N2 and N2O simultaneously. In this study we introduce cavity enhanced...
PublikationenFast and Highly Sensitive Fiber-Enhanced Raman Spectroscopic Monitoring of Molecular H2 and CH4 for Point-of-Care Diagnosis of Malabsorption Disorders in Exhaled Human Breath
Breath gas analysis is a novel powerful technique for noninvasive, early-stage diagnosis of metabolic disorders or diseases. Molecular hydrogen and methane are biomarkers for colonic fermentation, because...
PublikationenSapphire fiber Bragg gratings for high temperature and dynamic temperature diagnostics
This paper reports on a new kind of temperature sensor operating over an extremely large temperature range at high monitoring speeds. The sensor utilizes fiber Bragg gratings inscribed into multimode single...
PublikationenAtomic layer deposition of AlN for thin membranes using trimethylaluminum and H2/N2 plasma
Aluminum nitride (AlN) thin films with thicknesses from 25 to 100 nm were deposited on silicon and amorphous silica by plasma enhanced atomic layer deposition (PE-ALD). Trimethylaluminum (TMA) and a H2...
PublikationenPQ/PMMA photopolymer: Modelling post-exposure
Phenanthrenequinone (PQ) doped poly(methyl methacrylate) (PMMA) photopolymer material is currently being actively investigated. A previously developed 1-D Nonlocal Photo-polymerization Driven Diffusion...
PublikationenClassification and identification of pigmented cocci bacteria relevant to the soil environment via Raman spectroscopy
A soil habitat consists of a significant number of bacteria that cannot be cultivated by conventional means, thereby posing obvious difficulties in their classification and identification. This difficulty...
PublikationenSingle virus detection by means of atomic force microscopy in combination with advanced image analysis
In the present contribution virions of five different virus species, namely Varicella-zoster virus, Porcine teschovirus, Tobacco mosaic virus, Coliphage M13 and Enterobacteria phage PsP3, are investigated...
PublikationenComplete dispersion analysis of single crystal neodymium gallate
A single crystal of neodymium gallate was investigated by FTIR-spectroscopy in the reststrahlen region between 100 - 1000 cm-1. The three spectra of the crystal in principal orientations were analyzed...
PublikationenSingle-electron transitions in one-dimensional native nanostructures
Low-temperature measurements proved the existence of a two-dimensional electron gas on defined dislocation arrays in silicon. As a consequence, single-electron transitions (Cou-lomb blockades) are observed....
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