Nanocrystal-powered nanomotor.
We have constructed and operated a nanoscale linear motor powered by a single metal nanocrystal ram sandwiched between mechanical lever arms. Low-level electrical voltages applied to the carbon nanotube lever arms cause the nanocrystal to grow or shrink in a controlled manner. The length of the ram is adjustable from 0 to more than 150 nm, with extension speeds exceeding 1900 nm/s. The thermodynamic principles governing motor operation resemble those driving frost heave, a natural solid-state linear motor.
Regan
B C
BC
Department of Physics, Center of Integrated Nanomechanical Systems, University of California, Berkeley, California 94720, USA.
Aloni
S
S
Jensen
K
K
Ritchie
R O
RO
Zettl
A
A