Mid Sweden University

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.