Drexlers Big Bearing

thingiverse

Credit goes to Eric K. Drexler. I created a printable model from raw data provided with the "nanoengineer-1" software available here on Shapeways. Shapeways provides two files: outer shell and inner shell. Net cost price is listed. For an introduction to this kind of object, which I call "crystolecules," or more specifically "diamondoid molecular elements" (DMEs), check out my wiki page about them. The number of atoms on the outside edge of the small axle ring was chosen to be not divisible by the number of atoms on the inside edge of the bushing ring, meaning it cannot snap into place. Angular energy remains but is much smaller than thermal energy at room temperature, resulting in zero static friction and very low drag (2000-100000 times less than movement through water; see Superlubrication). This bearing does not wear out under normal conditions. Damage can only occur when heated to near melting point or bombarded with ionizing radiation (UV-rays / X-rays / gamma-rays), as the 3D mesh of internal bonds is more resistant to breaking down than proteins, essentially 1D chain molecules, and "crystolecules" thus have a longer lifespan. Since I did not compare DNA due to its primary use for data storage in nature, Exploratory engineering confirms that this bearing will function although production methods have yet to be developed. Parts like these are still in the experimental stage. For near-term projects, check out recent advancements in "structural DNA nanotechnology," such as Foresight news: Micrometer-scale structures built from DNA bricks; organic nanorobotics is on its way. Anorganic nanorobotics will follow.