Abstract
We report on hydrostatic pressure sensors prepared using 10 % w/w multiwalled carbon nanotube (MWCNT)/poly(vinyl alcohol) composites. Three types of carbon nanotubes were used in the composites: undoped MWCNTs, nitrogen-doped MWCNTs and boron-doped MWCNTs (B-MWCNTs). The sensor response was tested using an alternating current input, measuring the capacitance and conductance outputs. The sensors based on the three composites show a linear capacitance and conductance sensitivity pressure dependence in the range 50-120 kPa, but a higher sensitivity to pressure dependence above this interval. The highest angular coefficient of the sensitivity, which reached 0.092 kPa-1, was observed for the capacitance sensitivity of the B-MWCNT based composite.
| Original language | English |
|---|---|
| Pages (from-to) | 3995-4000 |
| Number of pages | 6 |
| Journal | Journal of Materials Science: Materials in Electronics |
| Volume | 24 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - Oct 2013 |
| Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering