Title :
Multiwall carbon nanotube resonator for ultra-sensitive mass detection
Author :
Wu, Wenchuan ; Palaniapan, Moorthi ; Wong, Weng-Keen
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
The experimental realisation of a multiwall carbon nanotube (MWNT) resonator for mass sensing applications is reported. Fabricated MWNT resonators with length, inner radius and outer radius as 34.37 mum, 5.37 nm and 13.27 nm, respectively, had a measured resonant frequency around 110-120 kHz. Measured results indicate that these MWNT resonators exhibit sub-attogram responsivity.
Keywords :
carbon nanotubes; micromechanical resonators; microsensors; C; microelectromechanical sensors; multiwall carbon nanotube resonator; radius 13.27 nm; radius 5.37 nm; resonant frequency; size 34.37 mum; subattogram reponsivity; ultrasensitive mass detection;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20081932
