Title :
Piezoresistive behaviour of single wall carbon nanotubes
Author :
Regoliosi, Pietro ; Reale, Andrea ; Di Carlo, Aldo ; Orlanducci, Silvia ; Terranova, Maria Letizia ; Lugli, Paolo
Author_Institution :
Dept of Electron. Eng., Univ. of Rome Tor Vergata, Italy
Abstract :
Correlation between mechanical deformation and conductivity behaviour of free-standing membranes of single walled carbon nanotubes (SWCNTs) has been successfully investigated. The aim of this study is proposing this kind of material as strain and pressure sensors. The nanotubes gauge factor of piezoresistivity has been evaluated by comparing the electrical responses induced by deformation in SWCNT membrane and in Si substrate: it proved to be factor 2.3-2.5 larger than that of the Si substrate.
Keywords :
carbon nanotubes; deformation; electrical conductivity; membranes; piezoresistance; pressure sensors; strain sensors; C; Si; Si substrate; electrical conductivity; mechanical deformation; membranes; nanotubes gauge factor; piezoresistivity; pressure sensors; single wall carbon nanotubes; strain sensors; Biomembranes; Capacitive sensors; Carbon nanotubes; Chemical technology; Mechanical sensors; Mechanical variables measurement; Piezoelectric actuators; Piezoresistance; Strain measurement; Voltage;
Conference_Titel :
Nanotechnology, 2004. 4th IEEE Conference on
Print_ISBN :
0-7803-8536-5
DOI :
10.1109/NANO.2004.1392279
