Scientists at Rice University along with other partners used a small, visible beam from a scanning electron microscope (SEM) to form laser-induced graphene (LIG), a multifunctional graphene foam. The researchers performed it by using a 405-nm laser to convert polyimide into LIG. The extremely small focused spot size of the 405-nm laser provided a 60% reduction in LIG feature sizes. This method has enabled the researchers to make structures that are 10 times denser than the earlier structures and also make the process economical, which could lead to wider commercial production of flexible electronics and sensors.
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