Well merging - Revision history

Apm: /* Related / added link to yet unwritten page Reversible mechanosynthesis

2024-08-19T08:11:06Z

Related: added link to yet unwritten page * Reversible mechanosynthesis

← Older revision		Revision as of 10:11, 19 August 2024
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	* [[Arrow of time]]		* [[Arrow of time]]
	* [[Dissipation sharing]]		* [[Dissipation sharing]]
			----
			* [[Reversible mechanosynthesis]]

Apm: Coverage in the Nanosystems book

2023-11-27T17:55:42Z

Coverage in the Nanosystems book

← Older revision		Revision as of 19:55, 27 November 2023
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	cryptography based on asymmetric problem difficulty would be kind of broken. <br>		cryptography based on asymmetric problem difficulty would be kind of broken. <br>
	See: [[Reversible logic]]		See: [[Reversible logic]]

			== Coverage in the [[Nanosystems]] book ==

			Page 186 Chapter 7.6. Transitions among time-dependent wells. <br>
			Figure 7.9. Merging of … wells <br>

			{{wikitodo\|Summarize Nanosystems findings here too.}}

	== Limits to losslessness ==		== Limits to losslessness ==

Apm: /* The basic process to avoid well merging */ process for reversible mechanosynthesis follows the same principle

2023-11-27T17:39:24Z

The basic process to avoid well merging: process for reversible mechanosynthesis follows the same principle

← Older revision		Revision as of 19:39, 27 November 2023
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	By doing step (2) in reverse. <br>		By doing step (2) in reverse. <br>
	Now the occupied state switched the well. <br>		Now the occupied state switched the well. <br>

			----

	The barrier needs to be >>kT to prevent thermally caused flips. <br>		The barrier needs to be >>kT to prevent thermally caused flips. <br>
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	This would have happened if the barrier would have been removed <br>		This would have happened if the barrier would have been removed <br>
	during a phase where the occupied state is in an well that is energetically unfavorable (or even equally favorable). <br>		during a phase where the occupied state is in an well that is energetically unfavorable (or even equally favorable). <br>

			----

			''''Note that the process for reversible mechanosynthesis follows the very same principle.''' Just that … <br>
			– The green arrows are mapped to "reversible time". <br>
			– The barrier is removed by moving one well closer keeping the other one stationary. Matter of perspective. <br>
			– The favorability/unfavorability of wells could be influenced by angle of approach or offset of approach. <br>

	== Well merging ==		== Well merging ==

Apm: == The basic process to avoid well merging == == Well merging == & more

2023-11-27T17:31:18Z

== The basic process to avoid well merging == == Well merging == & more

@@ Line 11: / Line 11: @@
 == Contexts ==
-=== Logic ===
+=== Logic / computation ===
 Changing bits from 0 to 1 or vice versa losslessly in [[reversible logic]] <br>
-possibly [[nanomechanical logic]] like e.g. [[rod logic]]. <br>
+possibly [[nanomechanical computation]] like e.g. [[rod logic]]. <br>
 === Building & Energy ===
@@ Line 20: / Line 20: @@
 Depositong an atom from a tooltip to a workpiece losslessly.<br>
 Breaking and forming chemical bonds losslessly in a [[chemomechanical converter]] system. <br>
 == Limits to losslessness ==

Apm: Related

2023-11-27T16:54:45Z

← Older revision		Revision as of 18:54, 27 November 2023
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	a way to get down to the absolute minimum mandatory amount of energy dissipation may be <br>		a way to get down to the absolute minimum mandatory amount of energy dissipation may be <br>
	there process defined on the page '''[[dissipation sharing]]'''.		there process defined on the page '''[[dissipation sharing]]'''.

			== Related ==

			* [[Reversible logic]]
			* [[Piezomechanosynthesis]] & [[Chemomechanical converter]]
			----
			* [[Arrow of time]]
			* [[Dissipation sharing]]

Apm: basic page

2023-11-27T16:51:53Z

basic page

New page

{{stub}}

[[File:Principles of Adiabatic Processes powerpoint ppt presentation Slide29 Possible Adiabatic Transitions.png|400px|thumb|right|Red arrows are lossy/dissipative/irreversible well merging processes. Follow the spiral of green arrows to go from a 0 to a 1 (or vice versa) in a lossless/nondissipative/reversible/adiabatic manner.]]

[[File:Reversible_mechanosynthesis_annotated.svg|400px|thumb|right|By smartly crafting the temporal trajectory of the potential wells for tool-tip and work-piece-surface mechanosynthesis can be made vastly more efficient than "normal chemistry".]]

This page is about …
* … energetic losses being incurred when potential energy wells of a bi-stable system are merged. 
* … changing the state of a system without needing to expend energy (in the limit of slow speeds). 

== Contexts ==

=== Logic ===

Changing bits from 0 to 1 or vice versa losslessly in [[reversible logic]] 
possibly [[nanomechanical logic]] like e.g. [[rod logic]]. 

=== Building & Energy ===

Depositong an atom from a tooltip to a workpiece losslessly. 
Breaking and forming chemical bonds losslessly in a [[chemomechanical converter]] system. 

== Limits to losslessness ==

Of course this is all merely near losslessly. 
As there are are other dissipation mechanisms like dynamic friction 
and dissipation pertaining to reciprocative motions. 
Plus there is an absolute minimum amount to dissipate to define a local arrow of time for the nanomachinery. 
Preventing it from running backwards occasionally.

== Remaining dissipation in the adiabatic case ==

Regarding the absolute minimum energy needed for a system to operate forward at finite nonzero speeds: 
This is a matter of dissipating enough energy per time to gain a sufficiently defined [[arrow of time]]. 
In the context of [[chemomechanical converter]]s, [[mechanochemistry]] and [[mechanosynthesis]] 
a way to get down to the absolute minimum mandatory amount of energy dissipation may be 
there process defined on the page '''[[dissipation sharing]]'''.