Difference between revisions of "Macroscale style machinery at the nanoscale"
(moved over as is from page Common misconceptions about atomically precise manufacturing) |
(linked the "jittery finger problem" to the page Thermal motion for now) |
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* [[rising surface area]] (per volume)<br> >> concerns: rising friction; rising corrosion; clogging | * [[rising surface area]] (per volume)<br> >> concerns: rising friction; rising corrosion; clogging | ||
* rising tendency towards thermodynamic equilibrium -- ([[Thermodynamics]]) | * rising tendency towards thermodynamic equilibrium -- ([[Thermodynamics]]) | ||
| − | * rising influence of thermal motion -- ([[Jittery finger problem]]) | + | * rising influence of thermal motion -- ([[Thermal motion|Jittery finger problem]]) |
* [[rising influence of quantum mechanics]] | * [[rising influence of quantum mechanics]] | ||
* falling available space (obviously) -- ([[Fat finger problem]]) | * falling available space (obviously) -- ([[Fat finger problem]]) | ||
Revision as of 13:17, 15 July 2018
Physics changes when one scales down things. This may pose serious problems.
If you are educated in physics and nanotechnology you will likely be quick to point out that this will not work because of the effects of one or more of the following scaling laws (here listed in informal form):
- rising surface area (per volume)
>> concerns: rising friction; rising corrosion; clogging - rising tendency towards thermodynamic equilibrium -- (Thermodynamics)
- rising influence of thermal motion -- (Jittery finger problem)
- rising influence of quantum mechanics
- falling available space (obviously) -- (Fat finger problem)
- falling material stiffness (less obvious) -- (Sloppy finger problem)
- rising influence of intermolecular forces -- (Sticky finger problem)
- rising effect of viscosity
But: All of these potential concerns have been analyzed.
The result: In total things change for the better rather than for the worse.
That is: For macroscale style machinery the changing of physics is actually an improving rather than a worsening. (Why nature does not do it this way albeit being better is a different topic (wiki-TODO: add link).)
It turns out that all the common assumptions:
- either do not hold at all under closer inspection
- or they are partially true but overcompensated by other less known factors.
Follow the links above for detailed explanations. (wiki-TODO: add those links)
