Low-power laser manufacturing of copper tracks on 3D printed geometry using liquid polyimide coating† † Electronic supplementary information (ESI) available. See DOI: https://doi.org/10.1039/d3na00120b

ABSTRACT: Silver nanoparticle photoreduction synthesis by direct laser writing is a process that enables copper micro-track production on very specific polymers. However, some important 3D printing polymers, such as acrylonitrile butadiene styrene (ABS) and acrylates, do not accept this treatment on their surface. This work presents an approach to produce copper microcircuitry on 3D substrates from these materials by using direct laser writing at low power (32 mW CW diode laser). We show that by coating a thin layer of polyimide (PI) on a 3D-printed geometry, followed by a sequence of chemical treatments and low-power laser-induced photoreduction, copper tracks can be produced using silver as catalyst. The surface chemistry of the layer through the different stages of the process is monitored by FTI

SUBMITTER: Abdulrhman M 

PROVIDER: S-EPMC10089081 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature