One-Step Fabrication of Low-Resistance Conductors on 3D-Printed Structures by Laser-Induced Graphene

被引：26
作者：
Gilavan, Mehraneh Tavakkoli [1 ]
Rahman, Md Saifur [1 ,2 ]
Minhas-Khan, Aamir [1 ]
Nambi, Suresh [1 ]
Grau, Gerd [1 ]
机构：
[1] York Univ, Lassonde Sch Engn, Dept Elect Engn & Comp Sci, Toronto, ON M3J 1P3, Canada
[2] Dartmouth Coll, Thayer Sch Engn, Hanover, NH 03755 USA
来源：
ACS APPLIED ELECTRONIC MATERIALS | 2021年 / 3卷 / 09期
基金：
加拿大自然科学与工程研究理事会;
关键词：
graphene; laser induction; 3D print; conductors; low sheet resistance; 3D; CARBON; CIRCUITS;
D O I：
10.1021/acsaelm.1c00480
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Three-dimensional (3D) printing is becoming increasingly prevalent in the manufacturing of goods for different applications. Many of these applications will benefit from the integration of electronics into 3D-printed structures. In this study, we report a fabrication method to convert 3D-printed polyetherimide (PEI) into graphene by exposing it to a scanned laser beam. This laser-induced graphene (LIG) is not only conductive but also has a large gauge factor for mechanical strain sensing. We have achieved a sheet resistance of 0.30 Omega/sq which is 50 times lower than that of previous reports on 3D-printed PEI/PC sheets and the lowest LIG sheet resistance value reported to date on any polymer substrate. This is achieved due to three main factors: large thickness of LIG on a 3D-printed object, maximization of the laser energy per unit area, and improved LIG morphology on 3D-printed PEI compared with that on commercial PEI.
引用
收藏
页码：3867 / 3875
页数：9
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