SPEC PerkinElmer 11.10

Molecular Spectroscopy

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A forensic case study using FT-IR, portable Raman spectroscopy, and SEM-EDS to differentiate three-layer automotive coatings from a hit-and-run accident, demonstrating that combining complementary spectroscopic and elemental techniques improves the accuracy of paint evidence identification.

Cellular autofluorescence often masks target signals in time-resolved fluorescence imaging, and metal-based phosphors that could solve this raise toxicity and cost concerns. Thermally activated delayed fluorescence (TADF) materials offer a metal-free alternative with long emission lifetimes, and early studies show promise despite remaining challenges with quenching, solubility, and spectral purity.

Black background of the chemical elements of the periodic table, atomic number, atomic weight, name and symbol of the element | Image Credit: © Ipajoel - stock.adobe.com.

A recent study showcased an auto-focusing laser-induced breakdown spectroscopy (LIBS) imaging system that uses a motor-driven focusing mirror to track surface height changes in real time, cutting signal variability on irregular surfaces and improving spectral stability more than eightfold compared to conventional static systems.