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Related: added link to Quasiparticles

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	* [[Mechanical metamaterial]]		* [[Mechanical metamaterial]]
	* [[Non mechanical technology path]]		* [[Non mechanical technology path]]
			* Slightly off-topic: [[Quasiparticle]]s

	== External links ==		== External links ==

Apm: /* Related / added Non mechanical technology path

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	* [[Thermal metamaterial]]		* [[Thermal metamaterial]]
	* [[Mechanical metamaterial]]		* [[Mechanical metamaterial]]
			* [[Non mechanical technology path]]

	== External links ==		== External links ==

Apm: Apm moved page Electrical metamaterials to Electric metamaterial: plural -> singular & removing spurious "*al"

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Apm moved page Electrical metamaterials to Electric metamaterial: plural -> singular & removing spurious "*al"

← Older revision	Revision as of 19:28, 21 March 2021
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Apm: basic version of page

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basic version of page

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== Playing pinball with electron waves ==

One could maybe design special electron conduction properties by nano-pattering
a suitable conductive base material.
* cutting voids
* insetting isolators or semiconductors, ...

In such a case when ballistic electron transport is desired rather than undesired, 
a problem is that Electrons not only scatter on crystal faults but 
also on phonons that are present even in perfect crystals. 
The bigger the slabs of metamaterial the more this will become a problem.

Material choice may have some influence on electron-phonon scattering but 
the obvious approach is cooling down to cryogenic temperatures.

Designing specific desired electron wave scatter behaviours by tailoring the metamaterials internal geometries is an inverse and therefore quite difficult and computation intense problem.
This is not one of the problems that can be back on the napkin estimated and eyeballed.
It often needs needs quantum mechanical simulations.
Much unlike many simple estimations that are possible for [[mechanical metamaterials]].

All this is not to confuse with [[electromagnetic metamaterials]].

== Not much metamaterial for electrons that behave as we are used to ==

Getting electrons to move more classically, 
e.g. by shaping wire corners such that electrons are not obstructed by ballistic reflection 
reduces conductive structures to simple electrical circuits (2D or 3D). 
Electric circuits are usually not counted as metamaterials. 

Well one may or may not count electric circuits with repeating cells as metamaterial like:
* data memory cells
* electrostatic motors cells [[electromechanical metamaterial]]
(These do not react on external global influences). 
{{wikitodo|more to think here …}}

=== Getting electric currents behaving as we are used to ===

Behaving ballistically in atomically precise (sub)nano-wires 
electrons might have trouble going around corners. 
The might prefer to just reflect back to where they came from.

In atomically precise (sub)nanostructures there is ballistic electron transport. 
This may complicate wiring due to unwanted reflections for very thin atomically precise wires that go around tight corners.

{{wikitodo| how do cutting edge chips deal with the problem of ballistic electron transport? are 2nm still big enough for that to not matter too much ? and or the manufacturing inaccuracies chaotic enough?!}}

{{wikitodo|move this to an other page - nanoelectronics?}}

== Related ==

* [[Electromagnetic metamaterial]]
* [[Thermal metamaterial]]
* [[Mechanical metamaterial]]

== External links ==

Wikipedia:
* [https://en.wikipedia.org/wiki/Electromigration Electromigration]
* phonon-electron scattering? [https://en.wikipedia.org/wiki/Electron-longitudinal_acoustic_phonon_interaction]

Electric metamaterial - Revision history

Apm: /* Related */ added link to Quasiparticles

Apm: /* Related */ added * Non mechanical technology path

Apm: Apm moved page Electrical metamaterials to Electric metamaterial: plural -> singular & removing spurious "*al"

Apm: basic version of page

Apm: /* Related / added Non mechanical technology path