Sticky finger problem - Revision history

Apm: category:Incremental path category:Direct path

2026-03-29T16:27:06Z

category:Incremental path category:Direct path

← Older revision		Revision as of 18:27, 29 March 2026
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	* [https://en.wikipedia.org/wiki/Nontransitive_dice Nontransitive dice]		* [https://en.wikipedia.org/wiki/Nontransitive_dice Nontransitive dice]

			[[category:Incremental path]] [[category:Direct path]]

Apm at 11:28, 27 June 2023

2023-06-27T11:28:18Z

← Older revision		Revision as of 13:28, 27 June 2023
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			'''Up: [[The finger problems]]'''

	The atoms of the manipulators "fingers" "adhere" to the atoms that are being moved and vice versa. Advanced forms of [[mechanosynthesis]] does not work with tiny tweezers that grip atoms. It's more like playing around with direction dependent (technical term anisotropic) attraction forces.		The atoms of the manipulators "fingers" "adhere" to the atoms that are being moved and vice versa. Advanced forms of [[mechanosynthesis]] does not work with tiny tweezers that grip atoms. It's more like playing around with direction dependent (technical term anisotropic) attraction forces.

Apm: added new section == Efficiency ==

2021-06-13T11:30:14Z

added new section == Efficiency ==

@@ Line 25: / Line 25: @@
 This way one can can pump some new energy into the system (originating from the diamondoid nanomachinery in the background - force times motion distance) going back up the hill closing the loop. (The system as a whole of course still moves down a thermodynamic potential. Otherwise it would not move forward.)
 == No need for tremendous capabilities ==
@@ Line 34: / Line 53: @@
 A core principle of atomically precise manufacturing is that one can make
 almost anything by synthesizing almost nothing via the "magic" of [[metamaterial]]s.
-That is via emulation of material properties at the scale of [[crystolecule]]s and [[microcomponent]]s. Not via the choice of different materials like we do today.
+That is via emulation of material properties at the scale of [[crystolecule]]s and [[microcomponent]]s.
 == Related ==

Apm: /* The "problem" */

2021-06-13T10:51:04Z

The "problem"

← Older revision		Revision as of 12:51, 13 June 2021
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	Noble gas atoms (especially the light ones) e.g. do not have enough sticking force (VdW force) to stick (bind) to other atoms.		Noble gas atoms (especially the light ones) e.g. do not have enough sticking force (VdW force) to stick (bind) to other atoms.
	So noble gas atoms like helium cannot be picked and placed by simple contact to a reactive tip.		So noble gas atoms like helium cannot be picked and placed by simple contact to a reactive tip.
	Only full steric encapsulation can hold them. Heavy noble gassed are a bit more reactive. So ~~wit~~ highly reactive tips, cooling, or high charges they can be more easily managed.		Only full steric encapsulation can hold them. Heavy noble gassed are a bit more reactive. So with highly reactive tips, cooling, or high charges they can be more easily managed.

	Obviously as long as one can go down to increasingly stronger attraction forces		Obviously as long as one can go down to increasingly stronger attraction forces

Apm: /* External links */

2021-03-12T18:28:55Z

External links

← Older revision		Revision as of 20:28, 12 March 2021
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	== External links ==		== External links ==

	* [[https://en.wikipedia.org/wiki/Nontransitive_dice Nontransitive dice]]		* [https://en.wikipedia.org/wiki/Nontransitive_dice Nontransitive dice]

Apm: /* The "problem" */

2021-03-12T18:26:38Z

The "problem"

← Older revision		Revision as of 20:26, 12 March 2021
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	== The "problem" ==		== The "problem" ==

	One might worry that due to that stickiness one cannot deposit enough kinds of structures to make anything useful. ~~But as~~ it turns out ~~that~~ this is not the case (see papers linked from the [[mechanosynthesis]] page). In contrary without that sticking force (noble gas atoms ~~show that behavior at room temperature) assembling anything would~~ be ~~impossible~~.		One might worry that due to that stickiness of the tool-tips one cannot deposit enough kinds of structures to make anything useful.<br>

			As it turns out this is not the case (see papers linked from the [[mechanosynthesis]] page). <br>
			In contrary without that sticking force assembling anything would be impossible.

			Noble gas atoms (especially the light ones) e.g. do not have enough sticking force (VdW force) to stick (bind) to other atoms.
			So noble gas atoms like helium cannot be picked and placed by simple contact to a reactive tip.
			Only full steric encapsulation can hold them. Heavy noble gassed are a bit more reactive. So wit highly reactive tips, cooling, or high charges they can be more easily managed.

	Obviously as long as one can go down to increasingly stronger attraction forces		Obviously as long as one can go down to increasingly stronger attraction forces

Apm: /* Related */ added link to yet unwritten page The finger problems

2018-07-15T11:25:04Z

Related: added link to yet unwritten page The finger problems

← Older revision		Revision as of 13:25, 15 July 2018
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	* [[Fat finger problem]]		* [[Fat finger problem]]
			* [[The finger problems]]
	* [[Mechanosynthesis]]		* [[Mechanosynthesis]]
	* [[History]]		* [[History]]

Apm: basic version of page

2017-07-04T14:27:48Z

basic version of page

New page

The atoms of the manipulators "fingers" "adhere" to the atoms that are being moved and vice versa. Advanced forms of [[mechanosynthesis]] does not work with tiny tweezers that grip atoms. It's more like playing around with direction dependent (technical term anisotropic) attraction forces.

== The "problem" ==

One might worry that due to that stickiness one cannot deposit enough kinds of structures to make anything useful. But as it turns out that this is not the case (see papers linked from the [[mechanosynthesis]] page). In contrary without that sticking force (noble gas atoms show that behavior at room temperature) assembling anything would be impossible.

Obviously as long as one can go down to increasingly stronger attraction forces
one can let go of the cargo atom(s) (that is deposit it).
(more accurately as long as the appropriate thermodynamic potential goes down)
But what if one ends up at "rock bottom"?

== The three tip "trick" ==

There are several strategies.
The most obvious one is to introduce further tips.
Just as one can get double sided sticky tape off ones fingers by using more area at the target site this same method works for atoms. Another possibility is to use the dependence of bond strength on (relative) bond direction (turning two tips towards each other or apart from each other) or the possibility to turn pi-bonds out of alignment.

This way one can can pump some new energy into the system (originating from the diamondoid nanomachinery in the background - force times motion distance) going back up the hill closing the loop. (The system as a whole of course still moves down a thermodynamic potential. Otherwise it would not move forward.)

== No need for tremendous capabilities ==

Of course not every structure allowed by physical law will be mechanosyntesizable.
Actually by far not.

But that is not a problem.
A core principle of atomically precise manufacturing is that one can make
almost anything by synthesizing almost nothing via the "magic" of [[metamaterial]]s.
That is via emulation of material properties at the scale of [[crystolecule]]s and [[microcomponent]]s. Not via the choice of different materials like we do today.

== Related ==

* [[Fat finger problem]]
* [[Mechanosynthesis]]
* [[History]]

== External links ==

* [[https://en.wikipedia.org/wiki/Nontransitive_dice Nontransitive dice]]