Title :
Small Size Molecule Sensor Based on Single Walled Carbon Nanotubes
Author :
Li, Lijie ; Wang, Chengyuan
Author_Institution :
Sch. of Eng., Swansea Univ., Swansea, UK
Abstract :
A new type of sensor constructed by single walled carbon nanotubes (SWCNTs) is proposed in this paper, which has the capability to detect existence of small size molecules. The operating principle of the sensor is based on pressure dependence of radial vibration modes of SWCNTs. The performance of the sensor is simulated using elastic shell model. The results show that 5% variation in vibration frequency can be achieved as the inner pressure of the SWCNTs increases from 0 to 0.1 × Pcr (critical buckling pressure).
Keywords :
carbon nanotubes; chemical sensors; SWCNT; critical buckling pressure; elastic shell model; radial vibration modes; single walled carbon nanotubes; small size molecule sensor; vibration frequency; Carbon nanotubes; Equations; Finite element methods; Mathematical model; Resonant frequency; Vibrations; Carbon nanotube; small size molecule sensor;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2011.2106772
