Infinitesimal bearing

APM in T.Level III may enable us to create a new type of macroscopic bearings in the form of a passive metamaterial.

From classic to infinitesimal bearings. More layers reduce the relative speed differences. The result has lower friction and higher damage tolerance.

To reduce the relative speed of two surfaces one adds a great number of layers with minimal thickness (percieved as infinitesimal). Just enough to accommodate some necessary nanomechanics. Those nanomechanics are gears and further structure that make sure that every layer takes the same part of the total speed difference. Note that a single layer can take well perceivable macroscopic speeds without being destroyed. Since there's no static friction and very low speed dependend dynamic friction in diamondoid nanomechanics [TODO add references] the bearings efficiency can be expected to be exceptional. So much that a fist sized model may (taking a wild guess) turn for years in the absance of aerodynamic drag. As in all products of advanced nanosystems the nanomechanics must (through their structure) provide some redundancy making the design more complicated. [TODO add more detailed Model]

Related AP metamaterials

Adding chemomechanical or electromechaniocal motors like mentioned here [Todo: add link] into the layers changes it into an interfacial drive (an active metamaterial). There the addup of layer movement acts as one of the methods to accumulate nano motion to macroscopic levels macroscopification.