A Caltech Library Service

Influence of lasing parameters on the morphology and electrical resistance of polyimide-based laser-induced graphene (LIG)

de la Roche, Jhonattan and López-Cifuentes, Isabella and Jaramillo-Botero, Andres (2022) Influence of lasing parameters on the morphology and electrical resistance of polyimide-based laser-induced graphene (LIG). Carbon Letters . ISSN 1976-4251. doi:10.1007/s42823-022-00447-2. (In Press)

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item:


Laser-induced graphene (LIG) uses a CO₂ infrared laser scriber for transforming specific polymer substrates into porous graphene. This technique is simple, scalable, low-cost, free of chemicals, and produces a 3D graphene for applications across many fields. However, the resulting 3D graphene is highly sensitive to the lasing parameters used in their production. Here, we report the effects of power, raster speed, number of lasing passes (with and without spot overlapping) on the resulting LIG structure, morphology, and sheet resistance, using a polyimide (PI) substrate. We find that the number of lasing passes, laser spot overlapping and brand of PI used had a strong influence on the quality of the LIG, measured in terms of the I_(G)/I_(D) and I_(2D) Raman bands and sheet resistance. Increasing number of passes and overlapping of laser spots led to increased LIG pore sizes, larger graphene scales, and reduced sheet resistance. Furthermore, the over-the-counter desktop CO₂ aser engraving unit used introduced additional restrictions that limited the quality of the LIG produced, particularly due to inconsistent control of the laser scribing speed and a poor thermal management of the laser unit.

Item Type:Article
Related URLs:
URLURL TypeDescription
de la Roche, Jhonattan0000-0003-3131-3096
López-Cifuentes, Isabella0000-0002-0547-6556
Jaramillo-Botero, Andres0000-0003-2844-0756
Additional Information:J. De la Roche was funded through the OMICAS alliance (“Optimización Multiescala In-silico de Cultivos Agrícolas Sostenibles—Infraestructura y validación en Arroz y Caña de Azúcar”), part of the Scientific Colombia ecosystem, sponsored by the World Bank, the Ministry of Science, Technology and Innovation (MINCIENCIAS), ICETEX, the Colombian Ministry of Education and the Colombian Ministry of Commerce, Industry and Tourism (under Grant id: FP44842-217-2018, award ID: 792-61187). I.L-C was funded through the Newton Fund grant # TSP2021\100159. The authors would also like to thank Tecnoparque SENA, nodo Cali for the technical support under the ID P2021-031070-8860 project. Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS), FP44842-217-2018
Funding AgencyGrant Number
Ministerio de Comercio, Industria y Turismo (Ministerio de Comercio, Industria y Turismo)FP44842-217-2018
Newton FundTSP2021\100159
Ministerio de Ciencia, Tecnología e Innovación (MINCIENCIAS)UNSPECIFIED
Instituto Colombiano de Crédito Educativo y Estudios Técnicos en el Exterior Mariano Ospina Pérez (ICETEX)UNSPECIFIED
Ministry of Education (Colombia)UNSPECIFIED
Record Number:CaltechAUTHORS:20230117-372591200.39
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:118845
Deposited By: Research Services Depository
Deposited On:14 Feb 2023 17:53
Last Modified:14 Feb 2023 17:53

Repository Staff Only: item control page