Leveraging a temperature-tunable, scale-like microstructure to produce multimodal, supersensitive sensors
Type
ArticleKAUST Department
Composite and Heterogeneous Material Analysis and Simulation Laboratory (COHMAS)Mechanical Engineering Program
Physical Science and Engineering (PSE) Division
Date
2017Permanent link to this record
http://hdl.handle.net/10754/624969
Metadata
Show full item recordAbstract
The microstructure of a flexible film plays an important role in its sensing capability. Here, we fabricate a temperature-dependent wrinkled single-walled carbon nanotube (SWCNT)/polydimethyl-siloxane (PDMS) film (WSPF) and a wrinkle-dependent scale-like SWCNT/PDMS film (SSPF) successfully, and address the formation and evolution mechanisms of each film. The low elastic modulus and high coefficient of thermal expansion of the PDMS layer combined with the excellent piezoresistive behavior of the SWCNT film motivated us to investigate how the scale-like microstructure of the SSPF could be used to design multimodal-sensing devices with outstanding capabilities. The results show that SSPFs present supersensitive performance in mechanical loading (an effective sensitivity of up to 740.7 kPa-1) and in temperature (a tunable thermal index of up to 29.9 × 103 K). These exceptional properties were demonstrated in practical applications in a programmable flexile pressure sensor, thermal/light monitor or switch, etc., and were further explained through the macroscopic and microscopic piezoresistive behaviors of scale-like SWCNT coatings.Citation
Tai Y, Kanti Bera T, Yang Z, Lubineau G (2017) Leveraging a temperature-tunable, scale-like microstructure to produce multimodal, supersensitive sensors. Nanoscale. Available: http://dx.doi.org/10.1039/c7nr01662j.Sponsors
We express gratitude to the Baseline Funding from the King Abdullah University of Science and Technology (KAUST) for financial support. This work was also partially supported by the key discipline fund of Shanghai (B117).Publisher
Royal Society of Chemistry (RSC)Journal
NanoscalePubMed ID
28561828ae974a485f413a2113503eed53cd6c53
10.1039/c7nr01662j
Scopus Count
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