Direct path - Revision history

Apm: /* Related */ added link to page Why force applying mechanosynthesis should work in brief

2026-06-22T08:07:36Z

Related: added link to page Why force applying mechanosynthesis should work in brief

← Older revision		Revision as of 10:07, 22 June 2026
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	== Related ==		== Related ==

			* '''[[Why force applying mechanosynthesis should work in brief]]'''
	* '''[[Pathways to advanced APM systems]]'''		* '''[[Pathways to advanced APM systems]]'''
	* [[Scanning probe microscopy]]		* [[Scanning probe microscopy]]

Apm: /* Likely intended meanings when "working on the direct path" is mentioned */

2026-05-31T19:07:43Z

Likely intended meanings when "working on the direct path" is mentioned

← Older revision		Revision as of 21:07, 31 May 2026
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	* [[Direct path scaling to macroscale productive nanosystems]]		* [[Direct path scaling to macroscale productive nanosystems]]

	== Likely intended meanings when "working on the direct path" is mentioned ==		== Likely intended meanings when "working on the direct path" is mentioned publicly ==

	* The speaker just means getting early primitive macro-to-nano [[mechanosynthesis]] to work with SPM systems <br>and is agnostic about what coms next. Possibly some form of [[mixed path]].		* The speaker just means getting early primitive macro-to-nano [[mechanosynthesis]] to work with SPM systems <br>and is agnostic about what coms next. Possibly some form of [[mixed path]].

Apm: /* Phases of the direct path */

2026-05-31T19:07:21Z

Phases of the direct path

← Older revision		Revision as of 21:07, 31 May 2026
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	* scaling [[atomically precise]] systems up to macroscale size (via [[bootstrapping]] methods) <br>using [[diamondoid]] [[crystolecule]] parts only (no [[foldamers]])		* scaling [[atomically precise]] systems up to macroscale size (via [[bootstrapping]] methods) <br>using [[diamondoid]] [[crystolecule]] parts only (no [[foldamers]])

	Here in this wiki the "direct path" will refer to both phases combinedly.<br>		Here on this page and in this wiki the "direct path" will usually refer to both phases combinedly.<br>
	Merely the first phase alone may be part of a [[mixed path]].		Merely the first phase alone may be part of a [[mixed path]].

Apm: /* Phases of the direct path */ added section == Likely intended meanings when "working on the direct path" is mentioned ==

2026-05-31T19:06:17Z

Phases of the direct path: added section == Likely intended meanings when "working on the direct path" is mentioned ==

← Older revision		Revision as of 21:06, 31 May 2026
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	* [[Early prototyping of piezochemical mechanosynthesis]]		* [[Early prototyping of piezochemical mechanosynthesis]]
	* [[Direct path scaling to macroscale productive nanosystems]]		* [[Direct path scaling to macroscale productive nanosystems]]

			== Likely intended meanings when "working on the direct path" is mentioned ==

			* The speaker just means getting early primitive macro-to-nano [[mechanosynthesis]] to work with SPM systems <br>and is agnostic about what coms next. Possibly some form of [[mixed path]].
			* The speaker means exploring aspects of scaleing using only [[crystolecule]]s (no [[foldamer]]s) so far that is already possile/sensible.
			* The speaker refers to the outdated idea of a maximally compact self containedly self-replicating [[Proto-assembler (outdated)\|"proto assembler"]]

	== Scaling approaches ==		== Scaling approaches ==

Apm: Category:Direct path

2026-03-29T19:04:43Z

Category:Direct path

← Older revision		Revision as of 21:04, 29 March 2026
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	[[Category:General]]		[[Category:General]]
	[[Category:Disquisition]]		[[Category:Disquisition]]
			[[Category:Direct path]]

Apm at 13:56, 6 October 2024

2024-10-06T13:56:57Z

← Older revision		Revision as of 15:56, 6 October 2024
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	[[File:INfAPM-concept-video screen-capture.png\|400px\|thumb\|right\|This is a '''screen capture from a concept animation video''' that was created in the context of the '''"Integrated Nanosystems for Atomically Precise Manufacturing Workshop – August 5-6, 2015"'''. The proposal contains several already experimentally created and shown materials and techniques that on their own were already cutting edge combined into one systems. This is pushing the limits hard and very much falls under the direct approach.]]		[[File:INfAPM-concept-video screen-capture.png\|400px\|thumb\|right\|This is a '''screen capture from a concept animation video''' that was created in the context of the '''"Integrated Nanosystems for Atomically Precise Manufacturing Workshop – August 5-6, 2015"'''. The proposal contains several already experimentally created and shown materials and techniques that on their own were already cutting edge combined into one systems. This is pushing the limits hard and very much falls under the direct approach.]]
	[[File:self-replicating-assembler-unit.png\|thumb\|Artistic depiction of a mobile assembler unit capable of self replication (linked to a "crystal" of assemblers and thus not ''free floating''). '''An outdated idea sometimes associated with the direct path.''' Factory style [[productive nanosystem]]s have also been discussed in the context of the direct path.]]		[[File:self-replicating-assembler-unit.png\|thumb\| '''OUTDATED''' – Artistic depiction of a mobile assembler unit capable of self replication (linked to a "crystal" of assemblers and thus not ''free floating''). '''An outdated idea sometimes associated with the direct path.''' Factory style [[productive nanosystem]]s have also been discussed in the context of the direct path.]]

	The ''direct path'' is a second [[Pathways to advanced APM systems\|pathway to advanced APM systems]] beside the [[incremental path]].		The ''direct path'' is a second [[Pathways to advanced APM systems\|pathway to advanced APM systems]] beside the [[incremental path]].

Apm: /* Current state */

2024-08-01T22:44:30Z

Current state

← Older revision		Revision as of 00:44, 2 August 2024
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	== Current state ==		== Current state ==

	The most advanced part of the direct path currently (2017-06) seems to be the ~~technolpgy~~ of <br>		The most advanced part of the direct path currently (2017-06) seems to be the technology of <br>
	"patterned layer epitaxy" aka "patterned atomic layer epitaxy" (patterned ALE) or more specific: hydrogen depassivation lithography (HDL)<br>		"patterned layer epitaxy" aka "patterned atomic layer epitaxy" (patterned ALE) or more specific: hydrogen depassivation lithography (HDL)<br>
	(HDL was first demonstrated by Prof. Joe Lyding of University of Illinois at Urbana-Champaign in 1994)		(HDL was first demonstrated by Prof. Joe Lyding of University of Illinois at Urbana-Champaign in 1994)

Apm: /* Difficulties / hurdles */ moved quite a bit over to new page Early prototyping of piezochemical mechanosynthesis

2024-08-01T22:44:00Z

Difficulties / hurdles: moved quite a bit over to new page Early prototyping of piezochemical mechanosynthesis

← Older revision		Revision as of 00:44, 2 August 2024
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	* [[Direct path scaling to macroscale productive nanosystems]]		* [[Direct path scaling to macroscale productive nanosystems]]

	== ~~Difficulties / hurdles~~ ==		== Scaling approaches ==

	~~There are several hard hurdles where progress seems slow. Like:~~

	* relatively slow progression of miniaturization of [[scanning probe microscopy\|SPM]] and consequently ...
	* ... little increase of speed at which [[scanning probe microscopy\|scanning probe microscopes (SPMs)]] with [[positional atomic precision]] can operate.
	* except very view hard to find instances there there are barely any attempts of miniaturizing UHV vacuum systems {{wikitodo\| add links to UHV miniaturization attempts}}
	* Due to very little control of the tip apex structure and even less of the rest of the tips conical widening behind multi-tip-interactions (anything going beyond surface-to-tip-interaction like tip-tip or tip-surface-tip or tip-tip-tip) is still far out of reach.
	* very poor handling of steps bigger than a single atom (slow response z control + z drift) => crashes in up-steps - "shadows" in down-steps

	Low speed, relatively bad vacuum and high error rate leads to the necessity of keeping the produced atomically precise ([[positional atomic precision\|precise in position not only topology]]) diamondoid designs rather small.

	* Restriction to minimal hydrocarbon designs that exclude further chemical elements. See the [[Discussion of proposed nanofactory designs]].
	* Possibly a hydrosilicon design instead of a hydrocarbon design if silicon becomes mechanosynthesizable before carbon. <br> Current experimental "high temperature" (70K...300K) mechanosynthesis demonstrations all use silicon. Carbon is still stuck in theory (See papers linked on the page about [[mechanosynthesis]]).

	One (maybe rather hard) approach towards [[Technology level III\|advanced gem-gum technology]] is to [[skipping technology levels\|skip the outlined technology levels]] of the [[incremental path]] and try to create at least one necessarily very small and simple hydrocarbon [[robotic mechanosyntesis core]]** from which via exponential assembly a nanofactory can be spawned.		One (maybe rather hard) approach towards [[Technology level III\|advanced gem-gum technology]] is to [[skipping technology levels\|skip the outlined technology levels]] of the [[incremental path]] and try to create at least one necessarily very small and simple hydrocarbon [[robotic mechanosyntesis core]]** from which via exponential assembly a nanofactory can be spawned.
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	A little less ambitious but still very challenging approach would be to improve MEMS SPM technology so far that it is fast and accurate enough that arrays of it are able to produce early atomically precise productive nanosystems in sufficiently massive parallelism for early very low throughput products.		A little less ambitious but still very challenging approach would be to improve MEMS SPM technology so far that it is fast and accurate enough that arrays of it are able to produce early atomically precise productive nanosystems in sufficiently massive parallelism for early very low throughput products.

	~~Most~~ realistically though it seems that the direct path will be massively accelerated by opening up and using results of the incremental path.		Perhaps most realistically though it seems that the direct path will be massively accelerated by opening up and using results of the incremental path.
	That is instead of using MEMS to pick and place atoms in the future it might be used to pick and place bigger assemblies form [[structural DNA nanotechnology]] de-novo protein technology or similar.		That is instead of using MEMS to pick and place atoms in the future it might be used to pick and place bigger assemblies form [[structural DNA nanotechnology]] de-novo protein technology or similar.

Apm: /* Phases of the direct path */

2024-08-01T21:53:09Z

Phases of the direct path

← Older revision		Revision as of 23:53, 1 August 2024
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	* [[Early prototyping of piezochemical mechanosynthesis]]		* [[Early prototyping of piezochemical mechanosynthesis]]
	* [[Direct path scaling to ~~macrosystems~~]]		* [[Direct path scaling to macroscale productive nanosystems]]

	== Difficulties / hurdles ==		== Difficulties / hurdles ==

Apm: /* Phases of the direct path / added links to two yet unwritten pages Early prototyping of piezochemical mechanosynthesis * Direct path scaling to macrosystems

2024-08-01T21:52:28Z

Phases of the direct path: added links to two yet unwritten pages * Early prototyping of piezochemical mechanosynthesis * Direct path scaling to macrosystems

← Older revision		Revision as of 23:52, 1 August 2024
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	{{wikitodo\|Factor the page apart according to these two phases.}}		{{wikitodo\|Factor the page apart according to these two phases.}}

			* [[Early prototyping of piezochemical mechanosynthesis]]
			* [[Direct path scaling to macrosystems]]

	== Difficulties / hurdles ==		== Difficulties / hurdles ==

← Older revision		Revision as of 15:56, 6 October 2024
Line 4:		Line 4:

	[[File:INfAPM-concept-video screen-capture.png\|400px\|thumb\|right\|This is a '''screen capture from a concept animation video''' that was created in the context of the '''"Integrated Nanosystems for Atomically Precise Manufacturing Workshop – August 5-6, 2015"'''. The proposal contains several already experimentally created and shown materials and techniques that on their own were already cutting edge combined into one systems. This is pushing the limits hard and very much falls under the direct approach.]]		[[File:INfAPM-concept-video screen-capture.png\|400px\|thumb\|right\|This is a '''screen capture from a concept animation video''' that was created in the context of the '''"Integrated Nanosystems for Atomically Precise Manufacturing Workshop – August 5-6, 2015"'''. The proposal contains several already experimentally created and shown materials and techniques that on their own were already cutting edge combined into one systems. This is pushing the limits hard and very much falls under the direct approach.]]
	[[File:self-replicating-assembler-unit.png\|thumb\|Artistic depiction of a mobile assembler unit capable of self replication (linked to a "crystal" of assemblers and thus not ''free floating''). '''An outdated idea sometimes associated with the direct path.''' Factory style [[productive nanosystem]]s have also been discussed in the context of the direct path.]]		[[File:self-replicating-assembler-unit.png\|thumb\| '''OUTDATED''' – Artistic depiction of a mobile assembler unit capable of self replication (linked to a "crystal" of assemblers and thus not ''free floating''). '''An outdated idea sometimes associated with the direct path.''' Factory style [[productive nanosystem]]s have also been discussed in the context of the direct path.]]

	The ''direct path'' is a second [[Pathways to advanced APM systems\|pathway to advanced APM systems]] beside the [[incremental path]].		The ''direct path'' is a second [[Pathways to advanced APM systems\|pathway to advanced APM systems]] beside the [[incremental path]].

Direct path - Revision history

Apm: /* Related */ added link to page Why force applying mechanosynthesis should work in brief

Apm: /* Likely intended meanings when "working on the direct path" is mentioned */

Apm: /* Phases of the direct path */

Apm: /* Phases of the direct path */ added section == Likely intended meanings when "working on the direct path" is mentioned ==

Apm: Category:Direct path

Apm at 13:56, 6 October 2024

Apm: /* Current state */

Apm: /* Difficulties / hurdles */ moved quite a bit over to new page Early prototyping of piezochemical mechanosynthesis

Apm: /* Phases of the direct path */

Apm: /* Phases of the direct path */ added links to two yet unwritten pages * Early prototyping of piezochemical mechanosynthesis * Direct path scaling to macrosystems

Apm: /* Phases of the direct path / added links to two yet unwritten pages Early prototyping of piezochemical mechanosynthesis * Direct path scaling to macrosystems