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We report on the design and evaluation of a low-cost versatile optical sensor system to detect explosive traces by fluorescence quenching. In comparison to common detection systems, it allows to rapidly sample sensor arrays in various analyte carriers. Moreover, our work enables system development towards low-cost analysis and sensor testing solutions due to the simplicity of the approach. Therefore,...
Non-linear bio-molecular imaging is a growing field with a strong demand for high power lasers. Especially two-photon excited fluorescence (TPEF) microscopy is a very promising and already widely applied imaging modality. The work horses for two-photon excitation are currently ultra-short pulse Ti:Sa lasers [1]. As these lasers tend to be bulky, expensive, and often not fiber compatible, there is...
The blue copper protein azurin fromPseudomonas aeruginosacontains a single Trp residue that is believed to be involved in the inducible intramolecular electron transfer from a disulphide group to the copper centre. This residue shows in fluorescence spectra the highest energy emission of tryptophan-containing compounds at room temperature, which is explained by its rigid and highly hydrophobic environment...
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