Nanorex, Inc. - NanoEngineer-1 Gallery: SRG-III Speed Reducer Gear

NanoEngineer-1 Gallery: SRG-III Speed Reducer Gear

Designer: Mark Sims
Date: August 31, 2005
Number of components: 4
Number of atoms: 15,342
Width: 11.3 nm
Height: 7.5 nm
Depth: 5.6 nm
Gear Ratio: 13:6
Speed Ratio: 2.167:1

The SRG-III is the third parallel-shaft speed reducer gear created by Mark Sims. A hybrid of the SRG-I and SRG-II, it is the first molecular gear train ever designed. With 15,342 atoms, the SRG-III is the second largest nanomechanical device ever modeled in atomic detail.

This animation loop shows a segment of a molecular dynamics simulation that took almost 31 hours to complete on my Dell laptop. I've removed the front-top half of the silicon carbide casing to explose the gear train.

The rotary motor (not shown) is connected to the largest gear and has the following parameters:

Torque: 10 nN-nm
Initial Speed: 0 GHz
Final Speed: 100 GHz

I used the following parameters for this simulation:

Frames: 1100
Steps per frame: 100
Temperature: 300

This animation loop shows the casing displayed in tubes mode.

- Mark

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