Highly flexible self-powered sensors based on printed circuit board technology for human motion detection and gesture recognition

Nanotechnology
Yiin-Kuen Fuh, Hsi-Chun Ho

Abstract

In this paper, we demonstrate a new integration of printed circuit board (PCB) technology-based self-powered sensors (PSSs) and direct-write, near-field electrospinning (NFES) with polyvinylidene fluoride (PVDF) micro/nano fibers (MNFs) as source materials. Integration with PCB technology is highly desirable for affordable mass production. In addition, we systematically investigate the effects of electrodes with intervals in the range of 0.15 mm to 0.40 mm on the resultant PSS output voltage and current. The results show that at a strain of 0.5% and 5 Hz, a PSS with a gap interval 0.15 mm produces a maximum output voltage of 3 V and a maximum output current of 220 nA. Under the same dimensional constraints, the MNFs are massively connected in series (via accumulation of continuous MNFs across the gaps ) and in parallel (via accumulation of parallel MNFs on the same gap) simultaneously. Finally, encapsulation in a flexible polymer with different interval electrodes demonstrated that electrical superposition can be realized by connecting MNFs collectively and effectively in serial/parallel patterns to achieve a high current and high voltage output, respectively. Further improvement in PSSs based on the effect of cooperativity was...Continue Reading

References

Apr 15, 2006·Science·Zhong Lin Wang, Jinhui Song
Feb 10, 2007·Science·Nathan S Lewis
Feb 15, 2008·Nature·Yong QinZhong Lin Wang
Jan 3, 2009·Nature Nanotechnology·Rusen YangZhong Lin Wang
Mar 30, 2010·Nature Nanotechnology·Sheng XuZhong Lin Wang
Aug 12, 2010·Nano Letters·Guang ZhuZhong Lin Wang
Mar 29, 2011·Nature Nanotechnology·Takeo YamadaKenji Hata
May 25, 2011·Nano Letters·Youfan HuZhong Lin Wang
Jul 4, 2012·Advanced Materials·Sangmin LeeZhong Lin Wang
Oct 31, 2014·Advanced Materials·Luana PersanoDario Pisignano

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