Journal
NANO LETTERS
Volume 11, Issue 4, Pages 1448-1451Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl1039549
Keywords
Single-walled carbon nanotube; NEMS; nanotube resonator; capacitive spring softening; elastic hardening
Categories
Funding
- University of Michigan
- National Science Foundation
Ask authors/readers for more resources
We report the capacitive spring softening effect observed in single-walled carbon nanotube (SWNT) nanoelectromechanical (NEM) resonators. The nanotube resonators adopt a dual-gate configuration with both bottom gate and end gat capable of tuning the resonance frequency through capacitive coupling. Interestingly, downward resonance frequency shifting is observed with increasing end-gate voltage, which can be attributed to the capacitive softening of the spring constant. Furthermore, in vibrational modes exhibit a much stronger spring softening effect than out modes. Our dual-gate design should enable the differentiation between these two types of vibrational modes and open up the new possibility for nonlinear operation resonators.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available