Tunneling effect in a polymer/carbon nanotube nanocompositestrain sensor
By Ning Hu, Y. Karube, Cheng Yan, Z. Masuda, Hisao Fukunaga. 2008
990 citations recorded by the source corpus.
A strain sensor has been fabricated from a polymer nanocomposite with multiwalled carbon nanotube (MWNT) fillers. The piezoresistivity of this nanocomposite strain sensor has been investigated based on an improved three-dimensional (3D) statistical resistor network model incorporating the tunneling effect between the neighboring carbon nanotubes (CNTs), and a fiber reorientation model. The numerical results agree very well with the experimental measurements. As compared with traditional strain gauges, much higher sensitivity can be obtained in the nanocomposite sensors when the volume fraction of CNT is close to the percolation threshold. For a small CNT volume fraction, weak nonlinear piezoresistivity is observed both experimentally and from numerical simulation. The tunneling effect is considered to be the principal mechanism of the sensor under small strains.
Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/10f98ede0482e9dbcf374c7c2eacddd0311fcf56
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In Atomic and Molecular Physics, and Optics
In Materials Chemistry
Citations in the corpus
- A Soft Strain Sensor Based on Ionic and Metal Liquids (2013, background): “tance of such materials is dominated by much more complex effects such as quantum tunneling [13], [14] rather than simple changes in geometry, making their responses nonlinear and”
- A Review: Carbon Nanotube-Based Piezoresistive Strain Sensors (2012, positive): “These properties were different from multiwalled carbon nanotubes, MWNT-7 [52, 53].”
- Synergistic effects of hybrid conductive nanofillers on the performance of 3D printed highly elastic strain sensors (2020, methodology): “To better understand the sensing mechanism in printed sensors, modeling studies were carried out [54,55].”