Journal
SMART MATERIALS AND STRUCTURES
Volume 28, Issue 6, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-665X/ab18cb
Keywords
flexible sensor; flow sensor; inkjet printing; electrical breakdown; nanocomposite
Funding
- National Natural Science Foundation of China [51575027]
- National Key Basic Research Program of China [2015CB059900]
Ask authors/readers for more resources
Herein we describe the fabrication and characterization of a novel flexible airflow sensor, consisting of a hair-like polyimide (PI) cantilever beam, a graphene/polyimide nanocomposite-based piezoresistor on the cantilever, and a double-deck PI film substrate. The airflow caused the deflection of the cantilever beam, and changed the resistance of the graphene/polyimide nanocomposite. The graphene/polyimide nanocomposite was fabricated by a direct inkjet printing process, while an electrical breakdown process was employed to endow the nanocomposite with excellent piezoresistivity, such that a gauge factor of 95 was achieved. The hair-like cantilever beam was created by a self-bending process driven by the embedded in-plane gradient stress of the bimorph materials, which consisted of pDADMAC/PI. The results of experiments indicated that the flow sensor had high resolution (similar to 0.5 m s(-1)), large detection range (0-20 m s(-1)), and good repeatability.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available