Publicaties
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Raman and quantitative-phase microscope with counter-propagating beams demonstrated on HeLa cells Universiteit Gent
Raman spectroscopy probes the chemical composition of biological samples with sub-micron resolution, rendering it a powerful tool in the diagnosis of several diseases and the study unstained biological samples. However, the weak Raman signal leads to long acquisition times, unsuited to study dynamical processes or large samples. Quantitative phase microscopy can speed up the diagnosis, provide complementary data, and potentially link the Raman ...
Lab-on-a-chip Raman sensors outperforming Raman microscopes Universiteit Gent
We demonstrate that the signal-to-noise ratio and signal collection efficiency in evanescent waveguide-based Raman spectroscopy exceeds that in Raman microscopes. We investigate the effect of silicon-nitride waveguide geometry to further improve the performance.
Remote excitation-tip-enhanced Raman scattering microscopy using silver nanowire KU Leuven
Tip-enhanced Raman scattering (TERS) microscopy is a promising technique for use in surface analysis, allowing both topographic and spectroscopic information to be obtained simultaneously at a scale below 10 nm. One proposed method to further improve spatial resolution is the use of propagating surface plasmons as an excitation light source (i.e., remote excitation). However, this requires a specialized tip that can only be fabricated via ...
Biological applications of multimodal imaging involving Raman and 4Pi Raman microscopy Universiteit Gent
Rationalizing Inter- and Intracrystal Heterogeneities in Dealuminated Acid Mordenite Zeolites by Stimulated Raman Scattering Microscopy Correlated with Super-resolution Fluorescence Microscopy KU Leuven
Dealuminated zeolites are widely used acid catalysts in research and the chemical industry. Bulk-level studies have revealed that the improved catalytic performance results from an enhanced molecular transport as well as from changes in the active sites. However, fully exploiting this information in rational catalyst design still requires insight in the intricate interplay between both. Here we introduce fluorescence and stimulated Raman ...
Raman Microscopy for Classification and Chemical Surface Mapping of Barrier Coatings on Paper with Oil-Filled Organic Nanoparticles Universiteit Hasselt
The creation of functional papers requires a specific deposition of chemical moieties at the surface. In particular, water-repellent barrier coatings can be formed by the deposition of (poly(styrene-co-maleimide) nanoparticles filled with different vegetable oils. The analysis of coated paper surfaces by dispersive Raman spectroscopy allows for statistical classification of different coating types and chemical mapping of the lateral surface ...
4U+03C0 raman microscopy Universiteit Gent
Tot 1992 konden microscopen alleen licht focussen in het transversale vlak, maar niet in de richting van voortplanting. Dat jaar was het experimenteel bewezen dat de spotgrootte verder langs de optische as kon worden gereduceerd door niet een, maar twee objectieve objectieven tegelijkertijd te gebruiken. Dit resulteert is een resolutie die tot zeven maal beter is dan de conventionele resolutie. Er kan een bijna sferische spot met een typische ...