A better intuition for diamondoid nanomachinery than jelly
Diamondoind nanomachinery (Macroscale style machinery at the nanoscale) is associated to behave like jelly.
This may be a rather misleading intuition though, mostly caused by molecular dynamics simulations showing extremely high speed.
See page: Misleading aspects in animations of diamondoid molecular machine elements
This page aims to give an alternate intuition that should be more useful
in the sense of leading one to have more accurate expectations of behaviour of such systems.
A better intuition: hyper-spring-steel, super-magnets, and sometimes giant forces, all at snail speed
It is still very flexible in terms of stretchability / bendability / strainabbility before breaking
but a better intuition would probably be some sort of hyper-spring-steel (way stiffer than actual spring-steel)
in an environment with super-magnets (way stronger than magnets can physically be) (wihch represent the Van der Waals forces).
Attractive forces are only 1/100 of the internal material forces so one needs to look closely for deformations from them.
Attractive forces can accelerate parts to extremely high speeds though. If not counteracted.
So better not let go of anything or else parts snap together at the speed of bullets which is then
really making them behave like jelly. When looking at the action via slow motion footage that is.
Such brutal snapping generates a lot of heat so is usually to avoid in a dense active machinery system.
Occasional snaps sparse in either space or spare in time (or sparse in both) are ok though.
Only thing where high deformations >1% (but not free wobbling jelly wiggles) may be more regularly visible
is in the transmission of very high (giant) forces (giant for the scale).
That is: In cases where both high power is needed and
heterogeneous mechanical nanoscale transmission is needed (no batching to a larger scale bundle).
Nanoscale bearings need low speeds v (in low mm/s range) to have low frictive losses
(See page: Friction in gem-gum technology) and
with power P equaling to speed v times force F (P=v*F) the force F needs to go up correspondingly.
Then again: Very high forces may also lead to notable frictive losses.
Reciptocative friction due to getting pretty far into the nonlinear elastic range.
It's an optimization problem. See page: Reciprocative friction in gem-gum technology
Not accounted for here is deformations from thermal excitations
which can be quite large especially for very thing and large aspect ratio structures.
Related
- Misleading aspects in animations of diamondoid molecular machine elements
- Macroscale style machinery at the nanoscale
- Gem-gum
- Intuitive feel
- Same relative deflections across scales – Which is what is actually relevant
rather than absolute material stiffness (which falls with smaller scales).