NASA Ames Work on Nanotechnology
Meyya Meyyappan
NASA Ames Research Center
Space Technology Division
meyya@orbit.arc.nasa.gov

Laser Powered Rotations of Nanotube Gears


Non-linear Equations of Rotational Motion:


Intrinsic Frequency:


22nd Feb., 1997, D. Srivastava




Rotations of a Nanotube Gear with 130 GHz cw Laser


Stable unidirectional rotations up to nanosecond durations

Angular momentum of the driven gear stabilizes the rotations against thermal fluctuations

22nd Feb., 1997, D. Srivastava




Rotations of a Gear with 130 GHz Pulsed Laser


Phase matched switching on/off of a square pulse does not affect the rotational performance of the gear.

In fact, it improves the performance!

22nd Feb., 1997, D. Srivastava

Structural Stability: Our Quantum Chemistry Study


Carbon Nanotube Electronic Devices

Jie Han (NAS) and Richard Jaffe (STC)


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Published: January 1998; WTEC Hyper-Librarian