Chuang, Hsiang‐WeiHsiang‐WeiChuangHsu, Chun‐RuChun‐RuHsuHONG-REN JIANG2025-06-172025-06-172025https://www.scopus.com/record/display.uri?eid=2-s2.0-105004583280&origin=resultslisthttps://scholars.lib.ntu.edu.tw/handle/123456789/730069A novel approach is presented for creating multifunctional polydimethylsiloxane (PDMS) surfaces through the integration of PDMS/graphite composites with blue laser-induced transformations. By systematically varying graphite concentration (0–10 wt.%) and laser power (740 mW – 2 W), precise control over surface properties is achieved, enabling tunable electrical conductivity (1–1000 kΩ sq−1) and wettability (contact angles 5°–145°). Compared to traditional infrared or UV laser systems, the blue laser method offers unique advantages through graphite-enhanced selective heating, enabling precise surface modification with improved cost-effectiveness. The resulting laser-induced graphene (LIG) structures demonstrate exceptional stability due to graphite particles serving as anchoring points, successfully withstanding multiple cycles of adhesive tape peeling tests. The practical utility of this single-step fabrication technique is demonstrated through a functional microfluidic chip capable of precise droplet manipulation through electrowetting. This facile, direct-write approach provides a promising platform for applications in flexible electronics, microfluidics, and smart materials.direct-write patterninglaser-induced graphene (LIG)polydimethylsiloxane (PDMS) compositessurface wettability controljournal article10.1002/admi.202500243