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Visit the CambridgeSoft Web site for current information about Chem 3D.
|Figure 1. End view of a van der Waals contact bearing; note the six-fold symmetry of the inner structure (shaft) and the eleven-fold symmetry of the supporting ring. This combination results in low static friction (energy barriers less than 0.001 kT at room temperature, in the MM2/Chem 3D Plus model). ©1991 K. Eric Drexler. All rights reserved.|
|Figure 2. Exploded view of the bearing in Figure 1. The grey ridge within the ring fits into the groove on the shaft, providing substantial stiffness against all displacements and rotations save that about the axis of the shaft. Further details will appear in a book now in preparation. ©1991 K. Eric Drexler. All rights reserved.|
Visit the CambridgeSoft Web site for current information about Chem 3D.K. Eric Drexler does exploratory molecular engineering. He is a Visiting Scholar at Stanford University's Dept. of Computer Science and serves as president of the Foresight Institute.
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