@inproceedings{ce93bdcc6eba4930a111ba3a6e104485,
title = "Formation of copper micropatterns by laser direct writing using copper nanoparticle ink",
abstract = "The 2D and 3D laser direct writing using Cu nanoparticle ink were studied using a compact blue-violet semiconductor laser. The laser direct writing based on a motion controller and G-code language program on PC enabled to prepare various kinds of shaped Cu grids which can be easily designed on-demand. A Cu grid pattern was prepared on a flexible and transparent polymer substrate and applied to a stress sensor. A star-shaped grid was fabricated a polymer substrate and the performance as a stress sensor for detecting the motion of human hand devises was demonstrated toward wearable electronics. In the preliminary 3D study, we have employed the layer-by-layer formation of a 3D structure, where cycle of the spin-coating of a metal nanoparticle ink and the laser direct writing were repeated. The 3D microstructures prepared by the 3D laser direct writing using Ag and Cu nanoparticle inks suggested the possibility of a 3D interconnection.",
keywords = "3D laser direct writing, 3D micro structure, copper grid, copper micropattern, copper nanoparticle ink, flexible and printed electronics, flexible polymer substrate, laser direct writing, stress sensor",
author = "Akira Watanabe and Jinguang Cai and Gang Qin and Lidan Fan",
year = "2016",
doi = "10.1117/12.2211215",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Arnold, {Craig B.} and Kunihiko Washio and Udo Klotzbach",
booktitle = "Laser-Based Micro-and Nanoprocessing X",
note = "Laser-Based Micro-and Nanoprocessing X ; Conference date: 16-02-2016 Through 18-02-2016",
}