Development and application of UV-visible and mid-IR differential absorption spectroscopy techniques for pollutant trace gas monitoring
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Slurries are often used in chemical and pharmaceutical manufacturing processes but present challenging on-line measurement and monitoring problems. In this paper, a novel multivariate kinetic modeling application is described that provides calibration-free ...
A realization of a high numeric aperture, aspheric, silicon based collimating element for the mid-infrared (4 – 14 microns) Quantum Cascade Lasers, suited for mass production using computer driven reactive ion etching is presented. ...
A computer-aided design of novel D-pi-A-pi-D styrylamines containing five isomeric benzobisthiazole moieties as the electron-accepting core has revealed the linear centrosymmetric benzo[1,2-d:4,5-d']bisthiazole as the most promising building block for engi ...
This work presents the development of two MEMS programmable diffraction gratings designed for spectroscopic applications in the visible, near- and mid-infrared. These devices have been developed to limit distortion of their optical surfaces at rest and thr ...
We report a new colloidal synthesis of niobium-doped TiO2 anatase nanocrystals (NCs) that allows for the prepn. of ∼10 nm NCs with control over the amt. of Nb doping up to ∼14%. The incorporation of niobium ions leads to the appearance of a tunable, broad ...
Atmospheric aerosols are one of the least understood components of the climate system and incur adverse health effects on susceptible populations. Organic aerosols can make up as much as 80% of atmospheric aerosols (Lim and Turpin
Recently developed synthesis methods allow for the production of atomically monodisperse clusters of silver atoms stabilized in solution by aromatic thiol ligands, which exhibit intense absorption peaks throughout the visible and near-IR spectral regions. ...
We present evidence that following near-UV excitation, protonated tyrosine- or phenylalanine–containing peptides undergo intersystem crossing to produce a triplet species. This pathway competes with direct dissociation from the excited electronic state and ...
Tandem mass spectrometry (MS/MS) combined with collision-induced dissociation (CID) is a key method for primary structure determination of peptides and proteins. Collisionally activated peptides undergo statistical dissociation, forming a series of backbon ...
We present a review of Microsystems-based technologies for the miniaturization of gas detection systems with a focus on air quality monitoring. On one hand, compared to sensors technologies, an approach based on microanalytical instruments can fulfill some ...