Licentiate Seminar in Engineering Physics with Luke Bond
Welcome to the licentiate seminar in Engineering Physics with Luke Bond. He will present his thesis: ”Optimizing laser processing for the production of advanced materials”.
Licentiate Thesis: Optimizing laser processing for the production of advanced materials
Date: January 15, 2024 at 10:15
Room: O102 Mid Sweden University, campus Sundsvall and Zoom
Main supervisor: Associate Professor Magnus Engholm, Mid Sweden University
Opponent/External reviewer: Associate Professor Davide Janner from Polytecnic of Turin, Italy
Meeting ID: 685 7881 4781
Passcode: 489829
Abstract
Lasers, with their unparalleled precision and control, have become vital tools across numerous industries, offering transformative potential for the development of advanced materials. In this research, laser-assisted techniques were employed to develop and optimize functional materials for industrial and energy applications. By leveraging the unique properties of laser light, significant advancements were achieved in three key areas. First, selective laser sintering was employed to create electrically conductive polymer-graphene composites, demonstrating promising electrical conductivity, crucial for applications requiring electromagnetic compatibility. Second, rare-earth-doped nanocrystals were synthesized using ultrashort laser pulses, achieving precise control over nanoparticle size and morphology while maintaining consistent stoichiometry with the bulk material. This synthesis offers potential for applications in photonics due to the stability and tailored properties of the nanocrystal. Third, laser-assisted processing was applied to modify nanographite and nanographite-silicon composite anode materials for lithium-ion batteries. The laser-induced nanoporous structure in graphite-based anodes led to significant improvements in fast charging capabilities and specific capacity. Additionally, the optimization of silicon distribution within the nanographite matrix enhanced battery performance and cycling stability. These findings illustrate the versatility and efficacy of laser-assisted processing in tailoring material properties to meet the growing demands of advanced applications, offering a pathway to the development of next-generation materials with enhanced functionalities.