Publications
Chosen filters:
Chosen filters:
4U+03C0 raman microscopy Ghent University
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 ...
Label-Free Live-Cell Imaging of Nucleic Acids Using Stimulated Raman Scattering Microscopy KU Leuven
Imaging of nucleic acids is important for studying cellular processes such as cell division and apoptosis. A noninvasive label-free technique is attractive. Raman spectroscopy provides rich chemical information based on specific vibrational peaks. However, the signal from spontaneous Raman scattering is weak and long integration times are required, which drastically limits the imaging speed when used for microscopy. Coherent Raman scattering ...
Multi-wavelength Raman microscopy of nickel-based electron transport in cable bacteria University of Antwerp
Cable bacteria embed a network of conductive protein fibers in their cell envelope that efficiently guides electron transport over distances spanning up to several centimeters. This form of long-distance electron transport is unique in biology and is mediated by a metalloprotein with a sulfur-coordinated nickel (Ni) cofactor. However, the molecular structure of this cofactor remains presently unknown. Here, we applied multi-wavelength Raman ...
Strain measurement for semiconductor applications with Raman spectroscopy and Transmission electron microscopy University of Antwerp
Scaling down the size of transistors has been a trend for several decades which has led to improved transistor performance, increased transistor density and hence the overall computation power of IC chips. The trend slowed in recent years due to reliability and power consumption issues at the nanoscale. Hence strain is introduced into transistor channels that has beneficial effects on improving the mobility of charge carriers, providing an ...
Monitoring Variations in Thermal Curing of Nanoparticle Coatings through Confocal Raman Microscopy and Principal Component Analysis Hasselt University
For paper coatings with organic nanoparticles of poly(styrene-co-maleimide), dispersive Raman spectroscopy and confocal Raman microscopy are applied for qualitative and quantitative analyses of the lateral distribution of chemical moieties as a function of different coating grades (degree of imidization) and thermal curing temperatures (120-250 degrees C). Raman mapping with band intensity ratios, single band intensities, and average spectral ...
Single-pulse coherent anti-Stokes Raman scattering microscopy employing an octave spanning pulse KU Leuven
We demonstrate two complementary types of microscopy using an identical setup for single-pulse coherent anti-Stokes Raman scattering (CARS) imaging, which employs an ultrabroadband laser pulse with a spectral bandwidth of 4800 cm(-1) and enables the suppression of nonresonant CARS signals. One is a novel type of microscopy that uses spectral phase modulation for the selective excitation of a single Raman mode. The selective excitation is ...
Comparing transmission electron microscopy and Raman spectral imaging for the characterization of single-walled carbon nanotube diameter distributions University of Antwerp
Resonant Raman spectroscopy is a widely used technique for single-walled carbon nanotube (SWCNT) characterization, in particular in the radial breathing mode (RBM) range which provides direct information on the structure of the nanotube in resonance. The RBM peak counting method, i.e. acquiring Raman spectrum grids on a substrate with a select set of discrete laser lines and counting RBM peaks as single nanotubes, is frequently used to ...
Environmental Scanning Electron Microscopy Connected with Energy Dispersive X-ray Analysis and Raman Techniques to Study ProRoot Mineral Trioxide Aggregate and Calcium Silicate Cements in Wet Conditions and in Real Time KU Leuven
Introduction: Pro Root mineral trioxide aggregate (MTA) and calcium silicate cements are able to set in a moist environment. The aim of the study was to examine the surface structure and composition of a cement paste under wet conditions and in real time during setting by environmental scanning electron microscopy connected with energy dispersive x-ray analysis (ESEM-EDX) and micro-Raman techniques. Methods: White Pro Root MTA and experimental ...