PIEZORESISTIVE PROPERTIES OF MULTI-WALLED CARBON NANOTUBE{POLY(DIMETHYLSILOXANE) COMPOSITES FOR LOW-PRESSURE-SENSING APPLICATIONS

摘要

Low-pressure-sensitive composites using multi-walled carbon nanotubes as a conductive ¯llernand poly(dimethylsiloxane) as a polymer matrix have been fabricated, and their electrical andnpiezoresistive properties have been studied. A large aspect ratio of the MWCNTs was used tonachieve good electrical properties of the composite, which led to a signi¯cant decrease in thenpercolation threshold and an increase in the electrical conductivity for very low MWCNTnloadings. The piezoresistive properties of the composites at <1.2 MPa were studied, whichnshowed that the resistanceu0001pressure sensitivity of the composites could be modulated bynvarying the MWCNT loading in the PDMS matrix