Title :
Design and fabrication of single chirality carbon nanotube-based sensors
Author :
Cullinan, Michael A. ; Culpepper, Martin L.
Author_Institution :
Dept. of Mech. Eng., Massachusetts Inst. of Technol., Cambridge, MA, USA
Abstract :
This paper presents a method to fabricate high purity, single chirality CNT-based sensor systems. Ultracentrifugation is initially used to create an 85% pure (6,5) CNT sample. Electrical breakdown is then used to remove the low resistance and low gauge factor CNTs from the sensor. Overall, this increases the gauge factor of the CNT-based piezoresistive sensor from -22.7 to 34.1. This result indicates that the majority of the impurities in the sensor are removed during the fabrication process.
Keywords :
carbon nanotubes; centrifuges; chirality; electric breakdown; nanosensors; piezoresistive devices; electrical breakdown; piezoresistive sensor; single chirality carbon nanotube-based sensors; ultracentrifugation; Carbon nanotubes; Electric breakdown; Piezoresistance; Sensor systems; Strain; CNTs; Chirality; Piezoresistive Sensor;
Conference_Titel :
Nanotechnology (IEEE-NANO), 2011 11th IEEE Conference on
Conference_Location :
Portland, OR
Print_ISBN :
978-1-4577-1514-3
Electronic_ISBN :
1944-9399
DOI :
10.1109/NANO.2011.6144397
