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Wafer-scale graphene devices could be fabricated by one step laser scribing method. Four kinds of novel laser scribed graphene devices have been developed, including in-plane transistors, photodetectors, loudspeakers and strain sensors. The in-plane graphene transistors have a large on/off ratio up to 5.34. The graphene photodetector arrays were achieved with photo responsivity as high as 0.32 A/W...
In this paper, wafer-scale flexible graphene loudspeakers are fabricated in one-step laser scribing technology. Current fabrication process for graphene devices is mainly based on chemical vapor deposition graphene, which needs several hours' graphene growth, transfer and patterning. By using this new laser scribing technology, wafer-scale graphene patterns can be obtained in 25 minutes with low cost...
In this paper, wafer-scale flexible strain sensors with high-performance are fabricated in one-step laser scribing. The graphene films could be obtained by direct reducing graphene oxide film in a light-scribe DVD burner. Our graphene strain sensor has the gauge factor (GF) of 0.11. In order to enhance the GF further, the graphene micro-ribbon has been used as strain sensor, which has the GF up to...
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