Journal Textile Coloration and Finishing Year / Vol., Issue, Month 2023 / V.35,no.2,Jun Title Tailoring Surface Properties of Polyimides by Laser Direct Patterning Authors Yun Chan Hwang, Jeong Min Sohn, Jae Hui Park, and Ki-Ho Nam Institution/Affiliations Kyungpook National University Pages/Total page pp.121 ~ 127 / 7 Language Korean Abstract In this study, a comprehensive investigation was conducted on the morphological and property changes of laser-induced nanocarbon (LINC) as a function of laser process parameters. LINC was formed on the surfaces of polyimide films with different backbone structures under various process conditions, including laser power, scan speed, and resolution. Three different forms of LINC electrodes (i.e., continuous 3D porous graphene, wooly nanocarbon fibers, line cut) were formed depending on the laser power and scan speed. Furthermore, heteroatom doping induced from the chemical structure of the polyimide during laser patterning was found to be effective in modifying the electrical properties of LINC electrodes. The LINC surfaces exhibited different microstructures depending on the laser beam resolution under constant laser power and scan speed, allowing for controllable surface wettability. The correlation between the chemical structure of the polymer substrate, laser process parameters, and carbonized surface properties in this study is expected to be utilized as fundamental understanding for the manufacturing of next-generation carbon-based electronic devices. Keywords polyimide, laser-induced nanocarbon, laser parameters, surface wettability, electrical resistivity Download   Reference http://koreascience.or.kr/journal/OSGGBT.page