Atomically precise surface passivation - Revision history

Apm: /* Exotic for bearing surfaces */

2026-06-25T17:41:40Z

Exotic for bearing surfaces

← Older revision		Revision as of 19:41, 25 June 2026
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	One might want to go for these if the aim is to go for bio compatible decomposability. <br>		One might want to go for these if the aim is to go for bio compatible decomposability. <br>
	Which is what diamondoid structures hardly provide. <br>		Which is what diamondoid structures hardly provide. <br>

			Related: [[Pure metals and metal alloys]]

	= Related =		= Related =

Apm: /* Surface passivation contact forces (exotic vdW forces) */ fixed a LOT of types in this section

2026-06-25T17:25:27Z

Surface passivation contact forces (exotic vdW forces): fixed a LOT of types in this section

Apm: added section = Exotic for bearing surfaces =

2026-06-25T17:23:35Z

added section = Exotic for bearing surfaces =

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 [https://en.wikipedia.org/wiki/Stone%E2%80%93Wales_defect Stone–Wales defect] and
 various variants of one or more combined [https://en.wikipedia.org/wiki/Azulene azulene] like patterns dislocations in graphene. <br>
 = Related =

Apm: Apm moved page Nanoscale surface passivation to Atomically precise surface passivation: old tite was too imprecise

2026-05-31T13:44:11Z

Apm moved page Nanoscale surface passivation to Atomically precise surface passivation: old tite was too imprecise

← Older revision	Revision as of 15:44, 31 May 2026
(No difference)

Apm at 19:58, 1 May 2026

2026-05-01T19:58:39Z

← Older revision		Revision as of 21:58, 1 May 2026
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	Old page: '''[[Surface passivation]]'''		Old page: '''[[Surface passivation]]'''

	[[File:Pizza-5964476_640--Pixaby_MV-Fotos.jpg\|320px\|thumb\|right\|Hydrogen on diamond is like wheat on dough, preventing parts from fusing together.]]		[[File:Pizza-5964476_640--Pixaby_MV-Fotos.jpg\|320px\|thumb\|right\|Hydrogen on diamond is like wheat on dough, preventing parts from fusing together on contact.]]
	[[File:Universal-joint sideview hyrogen-passivated.gif\|400px\|thumb\|right\| Hydrogen atoms (with a typical [[bond order]] of one) on the surface of diamond acts like plugs in the [[construction kit analogy for the periodic table of elements]] – (like shown here on an flexing universal joint mechanism – designed by K. E. Drexler and R. C. Merkle)]]		[[File:Universal-joint sideview hyrogen-passivated.gif\|400px\|thumb\|right\| Hydrogen atoms (with a typical [[bond order]] of one) on the surface of diamond acts like plugs in the [[construction kit analogy for the periodic table of elements]] – (like shown here on an flexing universal joint mechanism – designed by K. E. Drexler and R. C. Merkle)]]
	[[File:Universal-joint sideview nitroxy-passivated.jpg\|400px\|thumb\|right\|'''Nitroxy passivations''' as depicted here are an other form of passivation that does not add a ([[snap-back]] prone?) hydrogen layer atop increasing part thickness. Due to a lot of electronegative nitrogen at the surface and strains form slight bond length mismatch '''[[chemical stability]]''' may be more questionable here. Should be fine in a vacuum and under low bearing loads though. {{todo\|Investigate chemical stability of non hydrogen passivations}}.]]		[[File:Universal-joint sideview nitroxy-passivated.jpg\|400px\|thumb\|right\|'''Nitroxy passivations''' as depicted here are an other form of passivation that does not add a ([[snap-back]] prone?) hydrogen layer atop increasing part thickness. Due to a lot of electronegative nitrogen at the surface and strains form slight bond length mismatch '''[[chemical stability]]''' may be more questionable here. Should be fine in a vacuum and under low bearing loads though. {{todo\|Investigate chemical stability of non hydrogen passivations}}.]]

Apm: Category:Surprising facts

2026-03-29T20:02:19Z

Category:Surprising facts

← Older revision		Revision as of 22:02, 29 March 2026
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	* [[Passivation layer mineral]] – This is about macroscale passivation. At the nanoscale [[passivation layer mineral]]s still need passivation to not fuse together.		* [[Passivation layer mineral]] – This is about macroscale passivation. At the nanoscale [[passivation layer mineral]]s still need passivation to not fuse together.
	* [[Seamless covalent welding]]		* [[Seamless covalent welding]]

			[[Category:Surprising facts]]

Apm: /* Passivation by "graphene sheet lining" */

2025-11-13T09:27:24Z

Passivation by "graphene sheet lining"

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 * How well can the graphene smooth out steps below in the underlying material?
 * ... and so on and so forth ...
 = Related =

Apm: /* cubic (111) equivalent to hexagonal (0001) faces */

2025-11-13T08:58:56Z

cubic (111) equivalent to hexagonal (0001) faces

← Older revision		Revision as of 10:58, 13 November 2025
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	* everyting in-between.		* everyting in-between.

	== ~~cubic~~ (111) equivalent to hexagonal (0001) faces ==		== Cubic (111) equivalent to hexagonal (0001) faces ==

	Hydrogen (could be seen as the 0th halogen) works well for passivating cubic diamond (111) faces and equivalents but <br>		Hydrogen (could be seen as the 0th halogen) works well for passivating cubic diamond (111) faces and equivalents but <br>

Apm: /* Passivation of diamondoid compounds */

2025-11-13T08:58:32Z

Passivation of diamondoid compounds

← Older revision		Revision as of 10:58, 13 November 2025
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	= Passivation of diamondoid compounds =		= Passivation of diamondoid compounds =

			{{wikitodo\|Add some illustrative images.}}

	Diamondoid compounds as		Diamondoid compounds as

Apm: /* cubic (111) equivalent to hexagonal (0001) faces */

2025-11-13T08:57:52Z

cubic (111) equivalent to hexagonal (0001) faces

← Older revision		Revision as of 10:57, 13 November 2025
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	Going up the periods chemical reactivity becomes increasingly of concern. <br>		Going up the periods chemical reactivity becomes increasingly of concern. <br>
	Matching the same periods seem self suggesting to mimimize stress and strain(i.e. bending). <br>		Matching the same periods seem self suggesting to mimimize stress and strain(i.e. bending). <br>
	Environment exposure is a much more constraining condition than mutual exposure under vacuum ~~fro~~ a sliding interface. <br>		Environment exposure is a much more constraining condition than mutual exposure under vacuum for a sliding interface. <br>

	Nitrogen N passivation of Si(111) seems quite plausible and even chemically stable. <br>		Nitrogen N passivation of Si(111) seems quite plausible and even chemically stable. <br>
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	Phosporus P passivation off silicon may be quite reactive to even water liking to become phoshoric acid (H<sub>3</sub>PO<sub>4</sub>) <br>		Phosporus P passivation off silicon may be quite reactive to even water liking to become phoshoric acid (H<sub>3</sub>PO<sub>4</sub>) <br>
	But in a vaccuum mutually contactin it might work just fine judging ~~fro~~ tings like phosphorene: <br>		But in a vaccuum mutually contactin it might work just fine judging from tings like phosphorene: <br>
	https://en.wikipedia.org/wiki/Phosphorene		https://en.wikipedia.org/wiki/Phosphorene

← Older revision		Revision as of 19:25, 25 June 2026
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	== Surface passivation contact forces (exotic vdW forces) ==		== Surface passivation contact forces (exotic vdW forces) ==

	'''Side-notes on exotic parts of vdW ~~forcesforces~~:'''		'''Side-notes on exotic parts of vdW forces:'''

	To get repulsive Keesome forces from surface dipoles parts need to be guided so <br>		To get repulsive Keesome forces from surface dipoles parts need to be guided so <br>
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	To get stronger attractive force than "normal" vdW forces <br>		To get stronger attractive force than "normal" vdW forces <br>
	(just the ~~virual~~ dipole to virtual dipole ~~london~~ dispersion forces of e.g. two hydrogen passivated diamonds facing each other) <br>		(just the virtual dipole to virtual dipole London dispersion forces of e.g. two hydrogen passivated diamonds facing each other) <br>
	one can pair a nitrogen passivated surface with a hydrogen passivated surface. <br>		one can pair a nitrogen passivated surface with a hydrogen passivated surface. <br>
	I.e. ~~dipol~~ to induced dipole forces aka Debye forces. <br>		I.e. dipole to induced dipole forces aka Debye forces. <br>
	These may be weak {{todo\|Investigate the ~~strencgt~~ of such ~~interactuons~~.}} <br>		These may be weak {{todo\|Investigate the strenght of such interactions.}} <br>

	Even stronger (~~attraqctive~~ dipole to dipole ~~keesome~~ forces) <br>		Even stronger (attractive dipole to dipole Keesome forces) <br>
	would require one surface with an opposite dipole moment. <br>		would require one surface with an opposite dipole moment. <br>
	But positive polarity i.e. boron (or even aluminum) passivation <br>		But positive polarity i.e. boron (or even aluminum) passivation <br>
	is more questionable to achieve than the negative polarity. <br>		is more questionable to achieve than the negative polarity. <br>
	Subsurface boron in ~~slilicon~~ is known and nonmechanosynthetically accessible. <br>		Subsurface boron in silicon is known and nonmechanosynthetically accessible. <br>
	A full boron layer on the top layer will remain to be seen if it can be mechanosynthesized. <br>		A full boron layer on the top layer will remain to be seen if it can be mechanosynthesized. <br>

	~~Noter~~ that a direct nitrogen to boron contact would make for extremely strong <br>		Note that a direct nitrogen to boron contact would make for extremely strong <br>
	datively bonding connection that is no longer a mobile interface. <br>		datively bonding connection that is no longer a mobile interface. <br>
	like bulk sp3 boron nitrides being in the ballpark of bonding ~~strenght~~ of diamond. <br>		like bulk sp3 boron nitrides being in the ballpark of bonding strength of diamond. <br>

	= Passivation of silicon containing gemstone like compounds =		= Passivation of silicon containing gemstone like compounds =