CC BY
11ALT'22
LM-O-8
LASER-MATTER INTERACTION
Laser-assisted design of graphene-glass conductive surfaces for electronics
and sensing
R. D. Rodriguez*1, A. Garcia1, M. Fatkullin1, S. Shchadenko1, I. Petrov1, L. Lu2, A. Averkiev1, A. Lipovka*1, R. Wang3, J. Sun3, Q. Li4, X. Jia2, C. Cheng4, O. Kanoun5, E. Sheremet1
1- Tomsk Polytechnic University, Lenin ave. 30, Tomsk, Russia,634050 2- Shihezi University, Shihezi 832003, People's Republic of China 3 - Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China 4 - College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan
University, Chengdu, 610065, China 5- Chemnitz University of Technology, 09111 Chemnitz, Germany Main author email address: raul@tpu.ru, lipovka.a@gmail.com
Smart and functional electronics designed on the base of daily used objects is an attractive research direction to contribute to the Internet-of-Things. Glass, being a widespread material, which we interact with every day is highly desirable to turn electrically conductive. Especially helpful is to make it within the specific shapes allowing fabrication of electrical circuits and specific sensor geometries, leaving intact and optically transparent the rest and inactive surface (Fig. 1). For this task to be solved the conventional ways to induce the conductivity in glass (such as conductive oxide or metal coatings) are not the most optimal and straightforward [1].
In this work, we propose an elegant way to selectively integrate graphene into glass using the laser-induced backward transfer (LIBT). We use graphene oxide (GO) water suspension as a graphene source, and the LIBT route transfers laser-reduced GO into glass. This way does not only allow making arbitrary shapes, but it also allows the transfer of the lightest and highly reduced rGO sheets contributing to the improved quality of the structures. Finally, our method leads to robust integration with the formation of graphene-glass composites (Fig. 2).
Fig. 1. a) Arbitrary-shaped conductive pattern for lighting LED using our novel graphene-glass composite. b) Concept of LIBT for graphene-glass robust integration.
The structures we get are highly conductive (160 Ohm sq-1), robust enough to survive sonication and mechanical scratching without degradation of performance, and could be functionalized with other materials like silver to improve the performance in electrochemical and plasmonic sensing. Ag-functionalized graphene-glass composites showed the limit of detection of the model analyte down to the nanomolar range.
Our technology does not require comprehensive equipment, is inexpensive, adjustable, and opens multiple opportunities in modern smart electronics and ultrasensitive detection of analytes including drugs and pesticide leftovers.
The reported study was funded by RFBR and DFG, project number 21-51-150001. The research was carried out using the core facilities of TPU's "Physics and Chemical methods of analysis".
[1] W. Xuan, M. He et.al., Fast Response and High Sensitivity ZnO/glass Surface Acoustic Wave Humidity Sensors Using Graphene
Oxide Sensing Layer, Sci. Rep., 4, 7206 (2014).
