A Rapid and Straightforward Liquid Metal Patterning Technique on Paper Using Laser Printer for Soft Electronics

• DOI: 10.1002/adem.202301638
• Publication Date: 2024-01-23T06:14:11Z
• Authors: Woochan Kim; Jeong Bong(JB) Lee; Joohyung Lee; Sang Kug Chung; Daeyoung Kim
• Keywords: 02 engineering and technology; 0210 nano-technology

A gallium‐based liquid metal patterning for paper‐based soft electronics is reported. method proposed that rapid and straightforward on a printing paper using selective wetting properties obtained by lyophilic lyophobic coating. The coated with waterproof agent followed toner desired pattern in an inverse pattern. Then sponge roller soaked rolled filled into the exposed coating to create It believed this one of most convenient yet quite versatile methods. minimum line width, spacing, patternable angle are 50 μm, 200 3°, respectively. To demonstrate versatility, university symbol map shape metal. bending, folding, cutting, pasting, burning light‐emitting diode circuit also demonstrated. Additionally, deposition 3 μm Parylene top works as passivation layer, no damage noticed when repeatedly folded bent. Finally, pressure sensor measuring resistance