Form closure - Revision history

Apm: /* Related */

2025-04-20T03:47:24Z

← Older revision		Revision as of 05:47, 20 April 2025
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	= Related =		= Related =

	* [[Form closing interlocking]]		* [[Form closing interlocking]] (circular, to clean up)
	* [[Connection method]]		* [[Connection method]]
	* [[Nanoscale connection method]]		* [[Nanoscale connection method]]

Apm: /* Hierarchical locking */

2021-06-09T08:56:21Z

Hierarchical locking

← Older revision		Revision as of 10:56, 9 June 2021
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	The only removable element, the last in assembly and first in disassembly (LIFO last in first out)		The only removable element, the last in assembly and first in disassembly (LIFO last in first out)
	needs to be an energetic energy barrier (generalized clip – '''energetic locking'''). Nanoscale this can be Van der Waals force.		needs to be an energetic energy barrier (generalized clip – '''energetic locking'''). Nanoscale this can be Van der Waals force.
	The energy barrier must be strong enough to reliably withstand thermal fluctuations of the operation temperature. Likely the case.		The energy barrier must be strong enough to reliably withstand thermal fluctuations of the operation temperature. Likely the case.

	Used can be:		Used can be:

Apm: /* Hierarchical locking */ update to account for new insight of VdW force likely being sufficient for lock against disassembly

2021-06-09T08:53:10Z

Hierarchical locking: update to account for new insight of VdW force likely being sufficient for lock against disassembly

← Older revision		Revision as of 10:53, 9 June 2021
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	== Hierarchical locking ==		== Hierarchical locking ==

	To prevent [[diamondoid molecular element\|building blocks]] from falling apart by accident one can chain shape locking together.		To prevent [[diamondoid molecular element\|building blocks]] from falling apart by accident (maybe only relevant for larger scales) one can chain shape locking together. <br>
	Part A can't be removed because part B is in the way. Part B can't be removed because part C is in the way. And so on and so forth.		Part A can't be removed because part B is in the way. Part B can't be removed because part C is in the way. And so on and so forth.

	The last clip ~~that does not use shape locking but~~ '''energetic locking''' must be strong enough to reliably withstand thermal fluctuations of the operation temperature.		The only removable element, the last in assembly and first in disassembly (LIFO last in first out)
			needs to be an energetic energy barrier (generalized clip – '''energetic locking'''). Nanoscale this can be Van der Waals force.
			The energy barrier must be strong enough to reliably withstand thermal fluctuations of the operation temperature. Likely the case.

	Used can be:		Used can be:
	* Van der Waals sticking with sufficient surface (and back-volume density)		* Van der Waals sticking with sufficient surface (and back-volume density)

Apm: /* More for strength than for holding things together */

2021-06-09T08:40:56Z

More for strength than for holding things together

← Older revision		Revision as of 10:40, 9 June 2021
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	* Plot the chance of first-bond-rip over over contact-area for given time-number-product?		* Plot the chance of first-bond-rip over over contact-area for given time-number-product?

	== ~~More~~ for strength than for holding things together ==		== At small scales more for strength than for holding things together ==

	Given the [[Van der Waals force]] is holding things together quite well for assembly purposes in small scales form closure is:		Given the [[Van der Waals force]] is holding things together quite well for assembly purposes in small scales form closure is:

Apm: /* More for strength than for holding things together */ macroo => moacro

2021-06-09T08:40:13Z

More for strength than for holding things together: macroo => moacro

← Older revision		Revision as of 10:40, 9 June 2021
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	Form closure becomes increasingly important as a [[connection mechanism]] with bigger scales.		Form closure becomes increasingly important as a [[connection mechanism]] with bigger scales.
	* Like dust and dirt can get in the way of [[Van der Waals force]] at the ~~macrooscale~~.		* Like dust and dirt can get in the way of [[Van der Waals force]] at the macroscale.
	* Like mass to surface area rises (and gravitation becoming relevant)		* Like mass to surface area rises (and gravitation becoming relevant)

Apm: added section: == More for strength than for holding things together ==

2021-06-09T08:39:49Z

added section: == More for strength than for holding things together ==

@@ Line 24: / Line 24: @@
 * Plot the contact-area over the time-number-product for different chancces of first-bond-rip?
 * Plot the chance of first-bond-rip over over contact-area for given time-number-product?
 == Hierarchical locking ==

Apm: /* Usage against thermal Van der Waals bond breakage in the low nanoscale - hirachical locking */ elaborated on possible irrelevancy and investigation by plotting

2021-06-09T08:01:15Z

Usage against thermal Van der Waals bond breakage in the low nanoscale - hirachical locking: elaborated on possible irrelevancy and investigation by plotting

@@ Line 10: / Line 10: @@
 A nice thing is that with linear rising contact area breakage probability for the VdW-bond falls exponentially thus areas that will never break are quickly reached.
-Shape locking might be especially important for high temperature applications where small contact areas become insufficient to hold things together.
+Shape locking might be especially important for high temperature applications where small contact areas become insufficient to hold things together. <br>
 == Hierarchical locking ==

Apm: Apm moved page Shape locking to Form closure over redirect: this seems the generally used term in mechanical engineering (in German too – Formschluss)

2021-06-09T07:35:57Z

Apm moved page Shape locking to Form closure over redirect: this seems the generally used term in mechanical engineering (in German too – Formschluss)

← Older revision	Revision as of 09:35, 9 June 2021
(No difference)

Apm: /* Related */ added link to yet unwritten page Form closing interlocking

2021-06-09T07:32:12Z

Related: added link to yet unwritten page Form closing interlocking

← Older revision		Revision as of 09:32, 9 June 2021
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	= Related =		= Related =

			* [[Form closing interlocking]]
	* [[Connection method]]		* [[Connection method]]
	* [[Nanoscale connection method]]		* [[Nanoscale connection method]]

Apm: /* Related / added Nanoscale connection method

2021-04-25T10:20:49Z

Related: added * Nanoscale connection method

← Older revision		Revision as of 12:20, 25 April 2021
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	* [[Connection method]]		* [[Connection method]]
			* [[Nanoscale connection method]]

	= External links =		= External links =

	* Remotely related: Wikipedia: [https://en.wikipedia.org/wiki/Mechanically_interlocked_molecular_architectures Mechanically interlocked molecular architectures (MIMAs)]		* Remotely related: Wikipedia: [https://en.wikipedia.org/wiki/Mechanically_interlocked_molecular_architectures Mechanically interlocked molecular architectures (MIMAs)]