@article{Xu2024, 
author = {Kaichen Xu and Zimo Cai and Huayu Luo and Xingyu Lin and Geng Yang and Haibo Xie and Seung Hwan Ko and Huayong Yang},
title = {An in-situ hybrid laser-induced integrated sensor system with antioxidative copper},
year = {2024},
journal = {International Journal of Extreme Manufacturing},
volume = {6},
number = {6},
pages = {065501},
keywords = {hybrid laser direct writing, in-situ integrated sensor systems, engineering thermoplastics, functional copper inks, laser-induced passivation},
url = {https://www.sciopen.com/article/10.1088/2631-7990/ad6aae},
doi = {10.1088/2631-7990/ad6aae},
abstract = {Integration of sensors with engineering thermoplastics allows to track their health and surrounding stimuli. As one of vital backbones to construct sensor systems, copper (Cu) is highly conductive and cost-effective, yet tends to easily oxidize during and after processing. Herein, an in-situ integrated sensor system on engineering thermoplastics via hybrid laser direct writing is proposed, which primarily consists of laser-passivated functional Cu interconnects and laser-induced carbon-based sensors. Through a one-step photothermal treatment, the resulting functional Cu interconnects after reductive sintering and passivation are capable of resisting long-term oxidation failure at high temperatures (up to 170 ℃) without additional encapsulations. Interfacing with signal processing units, such an all-in-one system is applied for long-term and real-time temperature monitoring. This integrated sensor system with facile laser manufacturing strategies holds potentials for health monitoring and fault diagnosis of advanced equipment such as aircrafts, automobiles, high-speed trains, and medical devices.}
}