Journal
NANOSCALE RESEARCH LETTERS
Volume 11, Issue -, Pages -Publisher
SPRINGER
DOI: 10.1186/s11671-016-1626-z
Keywords
Piezoresistive; Strain sensors; Carbon nanotubes; Silver nanoparticles; Composites; Crack
Funding
- National Science Foundation [ECCS-1549888]
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [1549888] Funding Source: National Science Foundation
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We report highly sensitive and reliable strain sensors based on silver nanoparticle (AgNP) and carbon nanotube (CNT) composite thin films. The CNT/AgNP was prepared by a screen printing process using a mixture of a CNT paste and an AgNP ink. It is discovered that the sensitivity of such sensors are highly dependent on the crack formation in the composites. By altering the substrate use and the relative ratios of AgNPs and CNTs, the formation and propagation of cracks can be properly engineered, leading to piezoresistive strain sensors with enhanced sensitivity and robustness.
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