Name
Tech. Session XV - 253
Date & Time
Friday, June 27, 2025, 9:00 AM - 9:25 AM
Description
This paper introduces a cost-effective laser direct writing method for fabricating flexible electrodes. Micron-sized copper powder is combined with polypropylene (pp-Cu) and Loctite® Extreme Glue (glue-Cu) to create a metal-polymer composite feedstock. A low-power carbon dioxide laser is used to process the feedstock to evaporate and burn out the polymer phase between the metal particles, building conductive pathways along the laser ablation toolpath. The laser-processed electrode made from the pp-Cu composite exhibits a resistance of approximately 20MΩ, while the glue-Cu electrode demonstrates a resistance of around 2kΩ. Further, the bent electrode retains its conductivity at a bending radius of 30 mm, demonstrating its potential for use in flexible sensor applications. This approach enables the fabrication of flexible and conformal electronics without requiring protective gases, using a cost-efficient laser system.
Location Name
Redbud C
Full Address
Hyatt Regency
220 N Main St
Greenville, SC 29601
United States
Session Type
Technical Session
Paper #
NAMRC 253
Author List
Fengfeng Zhou, Xingyu Fu, Nobin Myeong, Siying Chen and Martin Jun
Paper Title
Cost-Efficient Laser Direct Writing of Flexible Electrodes Using Metal Matrix Composites
Presenter Name
Nobin Myeong
Session Chair
Martin Jun, Shihao Li
Presenter Email
nmyeong@purdue.edu