View source for Quasi amorphous structure

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In [[quasi amorphous structure]]s the internal structure of atomically precise parts is intentionally made seemingly chaotic and glass like <br>
but actually all the positions and orientations of the atoms are very much intentional <br>
they are and a result of computer optimizations. <br>
To put it somewhat humorously: There is method behind the madness. <br>

== Rules and level of difficulty ==

Of course these structures need to adhere to a few rules. <br>
* restrictions by chemical, thermal, and mechanical stability
* restrictions imposed by limits of mechanosynthesis

This stretches the concept of [[crystolecule]]s a bit <br> 
to [[quasicrystolecule]]s or [[glassolecule]]s <br>

Designing and assembling these [[quasicrystolecules]] is likely an advanced sill <br>
skill among advanced [[atomically precise manufacturing]] <br>

= Applications =

== larger scale superior shape approximations ==

This is about approximating the shape of larger structures <br>
removing most of the crystallographic steps that one would get <br> 
when just carving the shape out of a perfect crystal. <br>

Also it could be used for complex two-axially curved surfaces <br>
where simple strained shell structures can't serve as they mostly only bend in one axis. <br>

For an example: <br>
One concrete interesting likely very useful class of machine elements <br>
that critically needs smooth surfaces curved in two axes (for sealing and low friction): <br>
is the class of '''[[progressing cavity pump]]s'''. <br>

= Potential benefits of quasi amorphous structures =

== Avoiding high internal stresses and strains ==

Starting out with a [[strained structure]], <br>
introducing '''quasi amorphous structure''' or '''quasi amorphicity''' <br>
may in many cases allow to reduce internal stresses-n-strains to near zero. <br>
This should allow for the benefits  of: <br>
* retaining [[FAPP]] full mechanical strength (improvement of mechanical stability) <br>
* avoid fire hazard or even explosion hazard (improvement of thermal and chemical stability) <br>

== Precise positioning well below the crystal lattice size ==

For structural connection parts typically on the smaller side <br>
see page: [[Kaehler bracket]] <br>

Beyond that: <br>
The bigger the structure <br> 
the more accurate a desired alignment can be approximated. <br>

= Size and search space =

With larger past size the search-space quickly becomes uber astronomically gigantic though. <br>
AI may apply sophisticated learned heuristics. <br>
And perhaps some day [[quantum computation|Quantum computers]] could eventually be used <br>
to find optimal atomic arrangements for desired geometries. <br>

== Going to the extreme with the approximation accuracy ==

Even if thermal motions are bigger than the achieved accuracy, over large scales (macroscale) that can average out.  <br>
Gravitational wave detectors like LIGO e.g. can detect distances far below the diameter of an atomic core. Which is utterly 🤯. <br>

= Related =

* [[Kaehler bracket]]