材料科学
石墨烯
标度系数
激光器
弯曲
纳米技术
复合材料
柔性电子器件
数码产品
纤维素乙醇
导电体
纤维素
光电子学
光学
制作
化学工程
工程类
物理
医学
化学
替代医学
物理化学
病理
作者
Bohdan Kulyk,Beatriz F. R. Silva,Alexandre F. Carvalho,Sara Silvestre,A.J.S. Fernandes,Rodrigo Martins,Elvira Fortunato,F.M. Costa
标识
DOI:10.1021/acsami.0c20270
摘要
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 Ω sq–1. The functionality of both strain (gauge factor of ≈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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