Analytic modeling and piezoresistive detection theory of acoustic resonances in carbon nanotubes
This paper presents a direct electrical measurement technique of mechanically vibrating single-walled carbon nanotubes (SWCNTs) actuated up to microwave L-Band frequency regime. Acoustic resonances of suspended SWCNTs are detected by means of inherent average strain dependent piezoresistive property of the nanotubes. A novel combination of capacitive drive and piezoresistive sensing eliminates the high-frequency measurement barrier associated with large contact resistance (RC) and capacitance (CC). We demonstrate via analytic modeling, with input parameters from previously fabricated semiconducting and small-gap semiconducting (SGS) CNTs that this detection mechanism is feasible to characterize resonating CNTs up to beyond Ultra High Frequency (UHF) range.
The 10th IEEE International Conference on Nanotechnology (IEEE Nano 2010)
Hengky Chandrahalim, Cosmin I. Roman, and Christofer Hierold, "Analytic modeling and piezoresistive detection theory of acoustic resonances in carbon nanotubes," IEEE International Conference on Nanotechnology, 2010, pp. 778- 781.