期刊
ACS APPLIED MATERIALS & INTERFACES
卷 13, 期 8, 页码 10210-10221出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c20270
关键词
laser-induced graphene; paper; cellulose; strain sensors; bending sensors
资金
- national funds through the FCT I.P. [UIDB/50025/2020, UIDP/50025/2020]
- DAEPHYS-FCT [PD/BD/114063/2015]
- ERC AdG grant from the project DIGISMART [787410]
- [SFRH/BD/141525/2018]
- [SFRH/BD/149751/2019]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/149751/2019] Funding Source: FCT
This study presents strain and bending sensors fabricated by irradiating regular filter paper with a CO2 laser, and systematically investigates the influence of different process parameters on the conversion of cellulose fibers into LIG. The material obtained exhibits porous electrically conductive weblike structures with sheet resistances as low as 32 Omega sq(-1). The functionality of both strain and bending sensors is demonstrated for different sensing configurations, highlighting the versatility and potential of this material for low-cost mechanical sensing applications.
The ability to synthesize laser-induced graphene (LIG) on cellulosic materials such as paper opens the door to a wide range of potential applications, from consumer electronics to biomonitoring. In this work, strain and bending sensors fabricated by irradiation of regular filter paper with a CO2 laser are presented. A systematic study of the influence of the different process parameters on the conversion of cellulose fibers into LIG is undertaken, by analyzing the resulting morphology, structure, conductivity, and surface chemistry. The obtained material is characterized by porous electrically conductive weblike structures with sheet resistances reaching as low as 32 Omega sq(-1). The functionality of both strain (gauge factor of approximate to 42) and bending sensors is demonstrated for different sensing configurations, emphasizing the versatility and potential of this material for low-cost, sustainable, and environmentally friendly mechanical sensing.
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