Fabrication of Laser-induced graphene inside the polymer by direct laser irradiation

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In 2022, we concluded our investigation of the graphitization mechanism and changes in the composition of transparent polymers during laser irradiation using a promising computer simulation called ReaxFF. This simulation provided valuable insights into how transparent polymers are converted into laser-induced graphene (LIG) and enabled the analysis of chemical structure changes within the polymer, contrasting with experimental data. Additionally, the generation of gases during laser irradiation was taken into account.We also examined the applicability of LIG fabricated within transparent polymer composites as pressure sensors and energy harvesting devices. The LIG produced directly inside the transparent polymer exhibited superior performance as pressure sensors and energy harvesting devices compared to conventional LIG. This enhanced performance can be attributed to the increased air gaps and larger surface area of the internal LIG compared to traditional LIG production methods.In summary, our research in 2022 successfully utilized ReaxFF simulations to gain insights into the graphitization mechanism of transparent polymers during laser irradiation, as well as the potential applications of LIG produced within transparent polymer composites as pressure sensors and energy harvesting devices. The findings of this study showcase the advantages of internal LIG in terms of performance and demonstrate the potential of this method to revolutionize the field of LIG production and applications.