V. K. Unnikrishnan

TL;DR: In this paper, a 355 nm pulsed Nd:YAG laser with a pulse duration of 6 ns focussed onto a copper solid sample in air at atmospheric pressure is studied spectroscopically, and the temperature and electron density characterizing the plasma are measured by time-resolved spectroscopy of neutral atom and ion line emissions in the time window of 300-2000 ns.

TL;DR: In this article, a Laser Induced Breakdown Spectroscopy (LIBS) technique has been applied for the identification of four widely used plastics, polyethylene terephthalate (PET), high-density polyethylenes (PE), polypropylene (PP) and polystyrene (PS), whose recycling is required from commercial and biosafety points of view.

TL;DR: In this article, a method to fabricate flexible SERS substrates by replicating laser-written patterns created on polymethylmethacrylate (PMMA) onto a softelastomer, namely polydimethylsiloxane (PDMS), followed by in situ reduction of silver nanoparticles on the surface.

TL;DR: The efficacy of a combined laser-induced breakdown spectroscopy (LIBS)–Raman system for the rapid identification and classification of post-consumer plastics is demonstrated and the potential limitations of any of these techniques for sample identification can be overcome by the complementarity of these two techniques.

TL;DR: The application of calibration-free laser-induced breakdown spectroscopy for quantitative analysis of materials, illustrated by CF-LIBS applied to a brass sample of known composition, is presented in this article.