Metamaterial - Revision history

Apm at 16:33, 7 August 2025

2025-08-07T16:33:24Z

← Older revision		Revision as of 18:33, 7 August 2025
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	* bistable auxetics: [https://www.youtube.com/watch?v=fGc1uUHiKNk Video 2015-10-22]		* bistable auxetics: [https://www.youtube.com/watch?v=fGc1uUHiKNk Video 2015-10-22]
	* Metamaterial Mechanisms: (Hasso-Plattner-Institut) [https://hpi.de/baudisch/projects/metamaterial-mechanisms.html] [http://alexandraion.com/wp-content/uploads/2016UIST-Metamaterial-Mechanisms-authors-copy.pdf Metamaterial Mechanisms (pdf)] Their Youtube ~~cannel~~: [https://www.youtube.com/channel/UC74ZNPu98FIn8Wn3JNyTIVQ]		* Metamaterial Mechanisms: (Hasso-Plattner-Institut) [https://hpi.de/baudisch/projects/metamaterial-mechanisms.html] [http://alexandraion.com/wp-content/uploads/2016UIST-Metamaterial-Mechanisms-authors-copy.pdf Metamaterial Mechanisms (pdf)] Their Youtube channel: [https://www.youtube.com/channel/UC74ZNPu98FIn8Wn3JNyTIVQ]
	* A thermo-mechanical metamaterial: [http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.117.175901 "Lightweight Mechanical Metamaterials with Tunable Negative Thermal Expansion"]		* A thermo-mechanical metamaterial: [http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.117.175901 "Lightweight Mechanical Metamaterials with Tunable Negative Thermal Expansion"]

	[[Category:General]]		[[Category:General]]

Apm at 11:16, 7 August 2025

2025-08-07T11:16:49Z

← Older revision		Revision as of 13:16, 7 August 2025
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	There's a minimum size (volume) which is necessary to emulate a property.		There's a minimum size (volume) which is necessary to emulate a property.
	'''Metamaterial voxels''' must be bigger than that.		'''Metamaterial voxels''' must be bigger than that.
	Making meta voxels bigger ~~then~~ the absolute minimum size may sometimes help to improve the emulation quality (statistical average).		Making meta voxels bigger than the absolute minimum size may sometimes help to improve the emulation quality (statistical average).
	Meta voxels of various compatible types can be mixed and meshed but if the material properties are supposed to vary with location the meta-voxels must be small enough such that they won't be experienced as graininess by human senses.		Meta voxels of various compatible types can be mixed and meshed but if the material properties are supposed to vary with location the meta-voxels must be small enough such that they won't be experienced as graininess by human senses.
	So in summary there's a usable size range for meta-voxels.		So in summary there's a usable size range for meta-voxels.

Apm: typos, spelling, & co

2025-08-07T11:14:49Z

typos, spelling, & co

Apm: added link to Mechanical metamaterials to intro

2023-12-05T07:33:59Z

added link to Mechanical metamaterials to intro

← Older revision		Revision as of 09:33, 5 December 2023
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	This page is about metamaterials in general.<br>		This page is about metamaterials in general.<br>
	For more specific information about the metamaterials of focus in the [[technology level III\|target technology]] of [[Main Page\|atomically precise manufacturing]]		For more specific information about the metamaterials of focus in the [[technology level III\|target technology]] of [[Main Page\|atomically precise manufacturing]] <br>
	~~visit the~~ <br>'''~~main~~ page ~~about~~: [[~~gemstone based~~ metamaterial]]s'''		'''see page: [[Gemstone based metamaterial]]s''' <br>
			For more specific information about mechanical metamaterials <br>
			'''see page: [[Mechanical metamaterial]]s'''

	= Definition =		= Definition =

Apm: line-breaks & few changes

2023-12-05T07:29:29Z

line-breaks & few changes

← Older revision		Revision as of 09:29, 5 December 2023
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	* In other cases its necessary for the structures to be not perceivable by human senses.		* In other cases its necessary for the structures to be not perceivable by human senses.

	The smaller the structures the wider the range of properties that can be emulated.		The smaller the structures the wider the range of properties that can be emulated. <br>
	On the smallest scales in particular one can decouple the material properties from the chemical elements that make up the materials.		On the smallest scales in particular one can decouple the material properties from the chemical elements that make up the materials.
	----		----
	[[File:Space_of_possible_materials.svg\|250px\|thumb\|right\|Red space of metamaterials is quite systematically exhaustible. The grey space may be bigger even, yes, but it is very hard to reach in a one-off non-systematic lucky discovery fashion only. To give a weird analogy: Like we know much fewer real numbers beyond the rationals than we know rationals numbers despite there being much more of the former.]]		[[File:Space_of_possible_materials.svg\|250px\|thumb\|right\|Red space of metamaterials is quite systematically exhaustible. The grey space may be bigger even, yes, but it is very hard to reach in a one-off non-systematic lucky discovery fashion only. To give a weird analogy: Like we know much fewer real numbers beyond the rationals than we know rationals numbers despite there being much more of the former.]]

	Future [[atomic precision\|atomically precise]] metamaterials have control over the structure at the lowest physically possible level.		Future [[atomic precision\|atomically precise]] metamaterials have control over the structure at the lowest physically possible level. <br>
	They open up a new world of materials far beyond what we have today.		They open up a new world of materials far beyond what we have today.

	Some proposals for new materials can be found on the [[diamondoid metamaterial]] page. Those are the basis for the [[further improvement at technology level III\|prospective products]] of advanced ~~advanced atomically precise manufacturing (~~[[technology level III\|APM]]) systems.		Some proposals for new materials can be found on the [[diamondoid metamaterial]] page. <br>
			Those are the basis for the [[further improvement at technology level III\|prospective products]] of advanced gemstone based [[technology level III\|APM]] systems.

	__TOC__		__TOC__

Apm at 10:46, 8 June 2023

2023-06-08T10:46:20Z

← Older revision		Revision as of 12:46, 8 June 2023
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	On the smallest scales in particular one can decouple the material properties from the chemical elements that make up the materials.		On the smallest scales in particular one can decouple the material properties from the chemical elements that make up the materials.
	----		----
	[[File:Space_of_possible_materials.svg\|250px\|thumb\|right\|Red space of metamaterials is quite systematically exhaustible. The grey space may be bigger even, yes, but it is very hard to reach in a one-off non-systematic lucky discovery fashion only. To give a weird analogy: Like we know much fewer real numbers beyond the rationals than we know rationals numbers despite there being of the former.]]		[[File:Space_of_possible_materials.svg\|250px\|thumb\|right\|Red space of metamaterials is quite systematically exhaustible. The grey space may be bigger even, yes, but it is very hard to reach in a one-off non-systematic lucky discovery fashion only. To give a weird analogy: Like we know much fewer real numbers beyond the rationals than we know rationals numbers despite there being much more of the former.]]

	Future [[atomic precision\|atomically precise]] metamaterials have control over the structure at the lowest physically possible level.		Future [[atomic precision\|atomically precise]] metamaterials have control over the structure at the lowest physically possible level.

Apm at 10:45, 8 June 2023

2023-06-08T10:45:49Z

← Older revision		Revision as of 12:45, 8 June 2023
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	On the smallest scales in particular one can decouple the material properties from the chemical elements that make up the materials.		On the smallest scales in particular one can decouple the material properties from the chemical elements that make up the materials.
	----		----
	[[File:Space_of_possible_materials.svg\|250px\|thumb\|right\|Red space of metamaterials is quite systematically exhaustible. The grey space may be bigger even, yes, but it is very hard to reach in a one-off non-systematic lucky discovery fashion only. To give a weird analogy: Like we know much fewer real numbers than rationals despite there being ~~more reals than rationals~~.]]		[[File:Space_of_possible_materials.svg\|250px\|thumb\|right\|Red space of metamaterials is quite systematically exhaustible. The grey space may be bigger even, yes, but it is very hard to reach in a one-off non-systematic lucky discovery fashion only. To give a weird analogy: Like we know much fewer real numbers beyond the rationals than we know rationals numbers despite there being of the former.]]

	Future [[atomic precision\|atomically precise]] metamaterials have control over the structure at the lowest physically possible level.		Future [[atomic precision\|atomically precise]] metamaterials have control over the structure at the lowest physically possible level.

Apm: added image description

2023-06-08T10:43:48Z

added image description

← Older revision		Revision as of 12:43, 8 June 2023
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	On the smallest scales in particular one can decouple the material properties from the chemical elements that make up the materials.		On the smallest scales in particular one can decouple the material properties from the chemical elements that make up the materials.
	----		----
	[[File:Space_of_possible_materials.svg\|250px\|thumb\|right]]		[[File:Space_of_possible_materials.svg\|250px\|thumb\|right\|Red space of metamaterials is quite systematically exhaustible. The grey space may be bigger even, yes, but it is very hard to reach in a one-off non-systematic lucky discovery fashion only. To give a weird analogy: Like we know much fewer real numbers than rationals despite there being more reals than rationals.]]

	Future [[atomic precision\|atomically precise]] metamaterials have control over the structure at the lowest physically possible level.		Future [[atomic precision\|atomically precise]] metamaterials have control over the structure at the lowest physically possible level.

Apm: /* Elasticity emulating gemstone based metamaterials */ moved to page Gemstone based metamaterials renamed and differently filled

2023-06-08T10:34:29Z

Elasticity emulating gemstone based metamaterials: moved to page Gemstone based metamaterials renamed and differently filled

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	This can alleviating the environmental problem of [[spill]] of [[splinters]] a bit.		This can alleviating the environmental problem of [[spill]] of [[splinters]] a bit.

	== ~~Elasticity emulating gemstone based metamaterials~~ ==		== Examples ==

	~~When one connects~~ [[~~microcomponents]] in advanced nontrivial ways to create a~~ metamaterial		* Some on page: [[Mechanical metamaterial]]s
	~~that is capable of [[elasticity emulation\|emulation of elasticity~~]],		* Elasticity emulating gemstone based metamaterials on page [[Gemstone based metamaterial]]s
	~~then one has reached the point where mechanical~~ metamaterials ~~really begin.~~

	~~Note: This '''must not be confused''' with~~ [[~~utility fog]] (which targets ultra general purpose capabilities at the expense of performance).~~

	~~With [[elasticity emulation]] the [[nanoscale unbreakability properties]] of [[crystolecule~~]]s ~~(and microcomponents)~~
	~~are to a degree lifted up all the way to the macroscale.~~

	~~This gives cheap materials with ...~~
	* enormous toughness lying way beyond all metallic alloys in existence and ...
	* unlike most metals corrosion resistance is at the level of the base material: the chosen gemstone.
	~~Getting well designed gem-gum materials to chip of small splinters (e.g. attack by hardened saw-blade) will probably be almost impossible.~~

	~~Note that this combination of material properties has not only positive sides though. Two obvious concerns are:~~
	* Degradability is often a desired property. There are lots of gemstones that do degrade though (e.g. periclase MgO is slightly water soluble) so it's a matter of choosing the right material for the right application.
	* Military misuse.

	= From pixel to meta-voxel =		= From pixel to meta-voxel =

Apm: /* Examples */ moved over to mechanical metmaterials page

2023-06-08T10:29:50Z

Examples: moved over to mechanical metmaterials page

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	A metamaterial does not have its properties inherently but rather describes them ("meta.." ... describing)		A metamaterial does not have its properties inherently but rather describes them ("meta.." ... describing)

	~~= Examples =~~

	* (Passive) '''auxetic metamaterials:''' Metamaterials which use their non actuated internal structure to create a '''negative Poisson ratio'''. That is they expand transversally (sidewards) when stretched longitudinally (lengthwise) and they contract transversally when compressed longitudinally.
	* Metamaterials with (clearly independent) internal degrees of freedom deliberately left under-constrained. If the structural pieces are sheet shaped and the hinges allow compression to complete collapse without destruction one ends up with [[origami]] structures. Note that metamaterials are by far not limited to [[origami]] structures. Such structures can sbe made active just by adding actuators independently cation on the seperate degrees of freedom.
	* Metamaterials using internal flexing or hinging to act as complex mechanisms / machines. Giving up on long range periodicity (translation symmetry) symmetry blurs the line to (nano)machinery and ([[Nanomechanical computation\|nano]])[[mechanical computation]]. What makes a metamaterial is the presence of at least a little bit of repetition.

	= Related =		= Related =

← Older revision		Revision as of 13:14, 7 August 2025
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	= Towards advanced AP metamaterials =		= Towards advanced AP metamaterials =
	[[File:~~Metamaterial_hirarchy_venn_diagram~~.svg\|200px\|thumb\|right\|A possible classification hierarchy for metamaterials in the context of [[Main Page\|APM]]. (AP...atomically precise; GEM...gemstone based)]]		[[File:Metamaterial_hierarchy_venn_diagram.svg\|200px\|thumb\|right\|A possible classification hierarchy for metamaterials in the context of [[Main Page\|APM]]. (AP...atomically precise; GEM...gemstone based)]]

	This wiki will (for now) ~~organizes~~ advanced AP metamaterials in a hierarchy.<br>		This wiki will (for now) organize advanced AP metamaterials in a hierarchy.<br>
	* With advance in the hierarchy expanding the range of ~~emulateable~~ capabilities becomes easier (design).		* With advance in the hierarchy expanding the range of emulatable capabilities becomes easier (design).
	* The other way around currently (2017) at the beginning of the hierarchy metamaterials are limited and hard to scale. (See related page: [[Ban to incrementality of non-AP nanotechnology]]).		* The other way around currently (2017) at the beginning of the hierarchy metamaterials are limited and hard to scale. (See related page: [[Ban to incrementality of non-AP nanotechnology]]).

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	nacre is not of interest for "unconventional biomineralisation research".		nacre is not of interest for "unconventional biomineralisation research".
	Research for attainment of [[technology level II]] (where there is a focus on the synthesis of monolithic biominerals in a maximally AP way as base materials that will only later be shaped into metamaterials that do fully emulate elasticity instead of relying on the inherent elasticity of proteins when viewed as base material).		Research for attainment of [[technology level II]] (where there is a focus on the synthesis of monolithic biominerals in a maximally AP way as base materials that will only later be shaped into metamaterials that do fully emulate elasticity instead of relying on the inherent elasticity of proteins when viewed as base material).
	(Related: "[[~~Acellerating~~ and sidetracking attractors]]")		(Related: "[[Accelerating and sidetracking attractors]]")

	=== In artificial systems (far term) ===		=== In artificial systems (far term) ===

	One aspect in the artificial [[synthesis of food]] is (not too complicated) microscale paste extrusion 3D printing.		One aspect in the artificial [[synthesis of food]] is (not too complicated) microscale paste extrusion 3D printing.
	~~arranging~~ pastes in voxels (3D pixels) makes it a non-AP metamaterial.		Arranging pastes in voxels (3D pixels) makes it a non-AP metamaterial.
	(Baking may make some ~~pars~~ crisp others not ~~pattering~~ allows for a wide range of food textures).		(Baking may make some parts crisp others not patterning allows for a wide range of food textures).

	What is and absolutely needs to be atomically precise in the [[synthesis of food]] is a very wide range of base material molecules.		What is and absolutely needs to be atomically precise in the [[synthesis of food]] is a very wide range of base material molecules.
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	(instead of direct-to-product atom-by-atom assembly – [[molecular assembler\|molecular assembler pitfall]]).		(instead of direct-to-product atom-by-atom assembly – [[molecular assembler\|molecular assembler pitfall]]).
	Covalent welding needs to be done under [[practically perfect vacuum]].		Covalent welding needs to be done under [[practically perfect vacuum]].
	Since the product is one giant monolithic block there needs to be one giant vacuum chamber (much more difficult to get clean and keep clean).		Since the product is one giant monolithic block, there needs to be one giant vacuum chamber (much more difficult to get clean and keep clean).

	With the capability of making large monolithic gemstone systems (not a goal!) one could make big homogeneous chunks of base material (e.g. thumb sized flawless synthetic diamonds). This is the exact opposite of the (much more useful) metamaterials.<br>		With the capability of making large monolithic gemstone systems (not a goal!) one could make big homogeneous chunks of base material (e.g. thumb sized flawless synthetic diamonds). This is the exact opposite of the (much more useful) metamaterials.<br>
	Note that monolithic AP products could still form non-mechanical metamaterials.		Note that monolithic AP products could still form non-mechanical metamaterials.

	== Non-~~monolitic~~ AP metamaterials (gemstone based) ==		== Non-monolithic AP metamaterials (gemstone based) ==

	[[File:nanocell crystal 1.jpg\|thumb\|right\|200px]]		[[File:nanocell crystal 1.jpg\|thumb\|right\|200px]]
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	In contrast to the case of monolithic products (above) though fractures are not necessarily irreversible.		In contrast to the case of monolithic products (above) though fractures are not necessarily irreversible.
	And with a bit more of design effort [[controlled fracture\|the fracturing behavior can be controlled]].		And with a bit more of design effort [[controlled fracture\|the fracturing behavior can be controlled]].
	This can ~~alleviating~~ the environmental problem of [[spill]] of [[splinters]] a bit.		This can alleviate the environmental problem of [[spill]] of [[splinters]] a bit.

	== Examples ==		== Examples ==
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	A good example for the possible usage of meta voxels fooling human senses can be found in prospective advanced food synthesis.		A good example for the possible usage of meta voxels fooling human senses can be found in prospective advanced food synthesis.
	~~Wile~~ with inside knowledge it seems pretty impossible to create a perfect 1:1 copy of a natural apple. (That is every atom and molecule is present and at the identical place - when deep frozen). With sufficient effort it may be possible to create something that humans can't distinguish from a natural apple. Something that is actually completely different at the nanoscale - a meta apple.		While with inside knowledge it seems pretty impossible to create a perfect 1:1 copy of a natural apple. (That is every atom and molecule is present and at the identical place - when deep frozen). With sufficient effort it may be possible to create something that humans can't distinguish from a natural apple. Something that is actually completely different at the nanoscale - a meta apple.
	More practically, easy and maybe less morally questionable though will be to make some dough with more or less structure.		More practically, easy and maybe less morally questionable though will be to make some dough with more or less structure.
	Super advanced meta cake designer food so to say.		Super advanced meta cake designer food so to say.