Here we show that dense laser-induced graphene (LIG) structures can be synthesized using polymer infiltration and pyrolysis (PIP) cycles, providing a new avenue to polymer-derived carbon structures. LIG is a 3D porous graphene generated through the rapid process of laser writing on a precursor material, in contrast to conventional graphite-to-graphene processes; LIG properties are influenced by the choice of precursor material and the laser parameters such as speed and laser power. PIP has been used to densify composites by back-filling a porous matrix with a liquid Resorcinol Formaldehyde (Res-For) and then pyrolyzing the Res-For to a solid carbon structure. In this study, resorcinol formaldehyde is used as the LIG precursor material; by backfilling the LIG matrix with additional Res-For and lasing again, we demonstrate that the density, conductivity, and mechanical hardness are all increased via a PIP cycling process.

在这里，我们展示了密集的激光诱导石墨烯 (LIG) 结构可以使用聚合物渗透和热解 (PIP) 循环合成，为聚合物衍生的碳结构提供了新途径。LIG 是一种 3D 多孔石墨烯，通过激光在前体材料上的快速书写过程产生，与传统的石墨到石墨烯工艺不同；LIG 特性受前体材料选择和激光参数（如速度和激光功率）的影响。PIP 已用于通过用液体间苯二酚甲醛 (Res-For) 回填多孔基质，然后将 Res-For 热解成固体碳结构来致密化复合材料。在这项研究中，间苯二酚甲醛用作 LIG 前体材料；通过用额外的 Res-For 回填 LIG 矩阵并再次发射激光，我们证明了密度，