Paper 14093-2
Paper 14093-2
High-resolution diode laser-based patterning of composite PMMA thin films doped with silver nanoparticles
12 April 2026 • 16:00 - 16:15 CEST | Curie A (Niveau/Level 1)
Abstract
High quality poly(methyl methacrylate) (PMMA) thin nanocomposite films doped with different concentration of silver nanoparticles are demonstrated by using new optimized synthesis protocols. SEM and TEM confirmed the presence of Ag-PMMA nanocomposite nanoparticles of average size 10 nm with excellent dispersion of Ag nanoparticles into the PMMA matrix. By using a direct Laser writing system with a continuous wave 405 nm diode laser source the films were exposed and the non-linear nature of the plasmonic-based light absorption-energy transfer mechanism allowed formation of hole-like or linear patterns below 200nm, in the sub diffraction limit regime of the 280 nm FWHM laser beam, for the first time, suggesting the potential for nanocomposites sub-diffraction diode laser processing.
Presenter
National Hellenic Research Foundation (Greece)
Dr. Christos RIZIOTIS is Director of Research / Full Professor at the Theoretical and Physical Chemistry Institute of the National Hellenic Research Foundation -NHRF, Greece, where he is leading the division “Photonics & Quantum Technology”. He holds a Ph.D. in Photonics from Optoelectronics Research Centre, University of Southampton, UK, an M.Sc. in Electronics and Telecommunications and a Degree in Physics both from National University of Athens. His research interests cover the areas of photonic materials, integrated optics, direct laser writing, fibre sensors, optical communications, nanophotonics, plasmonics, and quantum photonics. His work has led to a number of successfully demonstrated applications in defence industry, Structural Health Monitoring, industrial process monitoring, chemical sensors and biomedical / healthcare devices. He has authored a wide thematic range of more than 100 publications in Journals and international conference proceedings, holding also 4 patents.