Diffusion properties of silk-derived laser-induced graphene

Abstract

Direct laser writing is an efficient method for producing graphene on a substrate. This study investigated the formation of laser-induced graphene on silk fibers using molecular dynamics simulation and ReaxFF. The use of natural substrates such as silk fibers in laser-induced graphene has significant advantages in the industry due to their biodegradability and recyclability, making silk a preferred component in biomaterials and wearable biosensors. The study also looked into the diffusion coefficient of silk-derived laser-induced graphene using the MSD method and ReaxFF approach at varying temperatures and lengths. The simulation results showed that there is a non-linear relationship between the diffusion coefficient and temperature, while a linear relationship exists between the diffusion coefficient and graphene size. Interestingly, larger graphene structures exhibited a lower diffusion coefficient.