Overstretch push-out

Simulation by Philip Turner. Beware of misleading aspects in animations of diamondoid molecular machine elements. Pauli repulsion pushes the piston out of the slightly too tight cylinder. The effect gets weaker with progressive push-out but still suffices for a final ejection. A bend snap makes for a sudden re-acceleration and for strong excitation of mechanical modes. As a side-note: There is also some significant conversion to kinetic energy. This is around tens to ~100m/s. More like a crystolecule cannon/gun than a gentle push-out.

VdW suck-in and suck-on can accelerate a crystolecule enough
such that it overshoots the end of its unobstructed superlubric rail and it escapes into free space.

High ebergy intercrystolecular snapping modes can cause
high energy mechanical exctiations which in turn can shoot off a crystolecule into free space.

A piston in a slightly too tight cylinder can cause push-out by Pauli-repulsion.
See the simulation clip. The push-out effect gets weaker the further it is pushed out,
Attained speed gets dissipated making it slow down a bit,
but in the case of this specific simulation it still sufficed for an eventual ejection.
There is also a bend-snap happening at the very end making for a sudden re-acceleration.
And for a lot of very strong mechanical mode excitations.

Also related here is the topic of accidental heatpumps.

These are high speed high energy events compared to proposed operation speeds and energies. Usually happening at least at several dozen m/s speeds.

Related

• Free floating crystolecule