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Title: Laser-induced graphene on additive manufacturing parts
Authors: Chua, Zhong Yang
Moon, Seung Ki
Jiao, Lishi
Song, Jie
Bi, Guijun
Zheng, Hongyu
Lee, Byunghoon
Koo, Jamyeong
Keywords: 3D Printing
Additive Manufacturing
DRNTU::Engineering::Mechanical engineering
Issue Date: 2019
Source: Jiao, L., Chua, Z. Y., Moon, S. K., Song, J., Bi, G., Zheng, H., . . . Koo, J. (2019). Laser-induced graphene on additive manufacturing parts. Nanomaterials, 9(1), 90-. doi:10.3390/nano9010090
Series/Report no.: Nanomaterials
Abstract: Additive manufacturing (AM) has become more prominent in leading industries. Recently, there have been intense efforts to achieve a fully functional 3D structural electronic device by integrating conductive structures into AM parts. Here, we introduce a simple approach to creating a conductive layer on a polymer AM part by CO2 laser processing. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Raman spectroscopy were employed to analyze laser-induced modifications in surface morphology and surface chemistry. The results suggest that conductive porous graphene was obtained from the AM-produced carbon precursor after the CO2 laser scanning. At a laser power of 4.5 W, the lowest sheet resistance of 15.9 Ω/sq was obtained, indicating the excellent electrical conductivity of the laser-induced graphene (LIG). The conductive graphene on the AM parts could serve as an electrical interconnection and shows a potential for the manufacturing of electronics components. An interdigital electrode capacitor was written on the AM parts to demonstrate the capability of LIG. Cyclic voltammetry, galvanostatic charge-discharge, and cyclability testing demonstrated good electrochemical performance of the LIG capacitor. These findings may create opportunities for the integration of laser direct writing electronic and additive manufacturing.
ISSN: 2079-4991
DOI: 10.3390/nano9010090
Rights: © 2019 The Authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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