Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
58 (1985), S. 3947-3953
ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
We have developed a device that is capable of moving with steps as small as 70 A(ring) in any direction over a flat surface. The device that we call the Maggot consists of two permanent magnets attached to the corners of a triangular plate that stands on a flat base with three fixed ball-bearing feet. The Maggot is propelled across the base by the magnetic fields from two coils that are powered by computer-controlled current pulses. Steering of the Maggot is made by vector addition of the pulses by the computer. A complete electromagnetic force theory is given in order to find the best magnet and solenoid geometries for maximum performance. The Maggot is UHV compatible, operates from 500 to 4.2 °K, and is most suitable for operation on a vibration-isolated base. Movement data is measured with both optical and scanning tunneling microscopy.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.335568
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