High pressure - Revision history

Apm: /* The limits to bending */ added link to 3 yet unwritten pages about structure stability

2021-06-11T18:12:49Z

The limits to bending: added link to 3 yet unwritten pages about structure stability

← Older revision		Revision as of 20:12, 11 June 2021
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	When increasing stress and strain in crystolecules further and further one successively		When increasing stress and strain in crystolecules further and further one successively
	looses:		looses:
	* first chemical stability (ok when isolated in a vacuum as for most machinery the case)		* first [[chemical stability]] (ok when isolated in a vacuum as for most machinery the case)
	* then thermal stability (we are very near the limit! – ok when cooled down enough permanently)		* then [[thermal stability]] (we are very near the limit! – ok when cooled down enough permanently)
	* and finally mechanical stability (fracture)		* and finally [[mechanical stability]] (fracture)
	Actually testing the fracture of simple crystolecules in a controlled fashion should be very interesting.		Actually testing the fracture of simple crystolecules in a controlled fashion should be very interesting.

Apm: /* Related / added Piezochemistry and Piezochemical mechanosynthesis

2021-05-23T14:55:28Z

Related: added * Piezochemistry and Piezochemical mechanosynthesis

← Older revision		Revision as of 16:55, 23 May 2021
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	== Related ==		== Related ==

			* [[Piezochemistry]] and [[Piezochemical mechanosynthesis]]
	* [[Stiffness]]		* [[Stiffness]]
	* [[Non mechanical technology path]]; [[Superconduction]]; [[Magnetism]]		* [[Non mechanical technology path]]; [[Superconduction]]; [[Magnetism]]
	* [[High pressure modifications]]		* [[High pressure modifications]]

Apm: /* The limits to pressure resistance */ removed doubled "then"

2020-11-04T12:58:13Z

The limits to pressure resistance: removed doubled "then"

← Older revision		Revision as of 14:58, 4 November 2020
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	Machines with moving parts and internal material transport of some sort usually need at least some some amount of voids inside. These voids can be very small though. Probably so small that the limiting factor is not the number and size of the voids but instead the pressure that the actual solid crystal structure can take before it gets crushed and undergoes a phase transition.		Machines with moving parts and internal material transport of some sort usually need at least some some amount of voids inside. These voids can be very small though. Probably so small that the limiting factor is not the number and size of the voids but instead the pressure that the actual solid crystal structure can take before it gets crushed and undergoes a phase transition.

	So then hardening against high pressure ~~then~~ involves choosing materials that do not undergo a phase transition under the expectable pressures.		So then hardening against high pressure involves choosing materials that do not undergo a phase transition under the expectable pressures.
	Like e.g. when it comes to silicon dioxide: Instead of quartz one might want go for its metastable high pressure polymorph Stishovite as main structural material.		Like e.g. when it comes to silicon dioxide: Instead of quartz one might want go for its metastable high pressure polymorph Stishovite as main structural material.

Apm: /* The limits to pressure resistance */ added paragraph split

2020-11-04T12:57:47Z

The limits to pressure resistance: added paragraph split

← Older revision		Revision as of 14:57, 4 November 2020
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	Machines with moving parts and internal material transport of some sort usually need at least some some amount of voids inside. These voids can be very small though. Probably so small that the limiting factor is not the number and size of the voids but instead the pressure that the actual solid crystal structure can take before it gets crushed and undergoes a phase transition.		Machines with moving parts and internal material transport of some sort usually need at least some some amount of voids inside. These voids can be very small though. Probably so small that the limiting factor is not the number and size of the voids but instead the pressure that the actual solid crystal structure can take before it gets crushed and undergoes a phase transition.

	So then hardening against high pressure then involves choosing materials that do not undergo a phase transition under the expectable pressures.		So then hardening against high pressure then involves choosing materials that do not undergo a phase transition under the expectable pressures.
	Like e.g. when it comes to silicon dioxide: Instead of quartz one might want go for its metastable high pressure polymorph Stishovite as main structural material.		Like e.g. when it comes to silicon dioxide: Instead of quartz one might want go for its metastable high pressure polymorph Stishovite as main structural material.

Apm: added section == The limits to pressure resistance ==

2020-11-04T12:56:46Z

added section == The limits to pressure resistance ==

@@ Line 60: / Line 60: @@
 * and finally mechanical stability (fracture)
 Actually testing the fracture of simple crystolecules in a controlled fashion should be very interesting.
 == Related ==

Apm: /* Applications of high pressure in the macroscale */ elaborating giving context

2020-11-04T12:39:08Z

Applications of high pressure in the macroscale: elaborating giving context

← Older revision		Revision as of 14:39, 4 November 2020
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	* in deep [[mining]] and [[deep drilling]]		* in deep [[mining]] and [[deep drilling]]
	* exploration of [[subsurface ocean]]s		* exploration of [[subsurface ocean]]s in the solar system

	== The limits to bending ==		== The limits to bending ==

Apm: /* Applications */ added links to mining deep drilling subsurface oceans

2020-11-04T12:38:26Z

Applications: added links to mining deep drilling subsurface oceans

← Older revision		Revision as of 14:38, 4 November 2020
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	* barely macroscopic (µm to mm scale): [[capsule transport]] of liquid density hydrogen at room temperature		* barely macroscopic (µm to mm scale): [[capsule transport]] of liquid density hydrogen at room temperature
	* very big tanks but usually at rather low pressures: [[gem-gum balloon products]]		* very big tanks but usually at rather low pressures: [[gem-gum balloon products]]

			* in deep [[mining]] and [[deep drilling]]
			* exploration of [[subsurface ocean]]s

	== The limits to bending ==		== The limits to bending ==

Apm: /* Related */ added link to stiffness

2017-08-09T18:14:43Z

Related: added link to stiffness

← Older revision		Revision as of 20:14, 9 August 2017
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	== Related ==		== Related ==

			* [[Stiffness]]
	* [[Non mechanical technology path]]; [[Superconduction]]; [[Magnetism]]		* [[Non mechanical technology path]]; [[Superconduction]]; [[Magnetism]]
	* [[High pressure modifications]]		* [[High pressure modifications]]

Apm: repaired 2 links

2017-08-09T17:08:17Z

repaired 2 links

← Older revision		Revision as of 19:08, 9 August 2017
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	In advanced [[gem-gum technology]] extremely high pressures can be easily induced		In advanced [[technology level III\|gem-gum technology]] extremely high pressures can be easily induced
	by simple means of mechanical advantage.		by simple means of mechanical advantage.

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	By keeping extremely high pressures in localized patches products containing these can be completely safe at the macroscale.		By keeping extremely high pressures in localized patches products containing these can be completely safe at the macroscale.

	Inclusion of slight strains can help simplifying design of [[~~crystolecules~~]] - example: strained shell sleeve bearing		Inclusion of slight strains can help simplifying design of [[crystolecule]]s - example: strained shell sleeve bearing

	Pressure can have very strong effects on various physical properties. It can have a similar effect to low temperature.		Pressure can have very strong effects on various physical properties. It can have a similar effect to low temperature.

Apm: ok initial version

2017-08-09T17:07:22Z

ok initial version

New page

In advanced [[gem-gum technology]] extremely high pressures can be easily induced
by simple means of mechanical advantage.

== Why high pressures don't cause cracking on the nanoscale ==

Since most [[crystolecule]]s are fully atomically precise and faultless there are no points where cracks can start early.
Thus albeit being gemstones (which in our usual macroscale experience are rather brittle) they can be bent in the two digit percentual range. At the nanoscale the whole theoretical strength of the material can be exploited.

== Mechanosynthesis is all about high pressure ==

By means of mechanical transmissions and cones pressures (and tensions) can be increased all the way to breaking point of the chemical bonds of the strongest existing materials (e.g. flawless diamond). After all this is what the process of [[mechanosynthesis]] is all about.

By conceptually widening the tips of the tool holder cones for mechanosynthesis one could break more bonds at once.
A stiff diamond rod between to tips can be bent all the way to the theoretical limit (a little more if cold).

== What about high pressures at the macroscale ==

Large conglomerates of crystolecules will of course have some crystolecules inside which have mild to severe faults.
But due to the [[connection method|nature of their connection]] featuring [[shape locking]] cracks in crystolecules are stopped immediately at their interlocking interfaces.
Thus even at the macroscale still a good fraction of the theoretical strength of the material can be exploited.

== Applications ==

=== Applications of high pressure in the nanoscale ===

By keeping extremely high pressures in localized patches products containing these can be completely safe at the macroscale.

Inclusion of slight strains can help simplifying design of [[crystolecules]] - example: strained shell sleeve bearing

Pressure can have very strong effects on various physical properties. It can have a similar effect to low temperature.
This gives several opportunities to reducing civilizations dependency on scarce elements.

* Magnetism in elements that don't normally show it. (carbon)
* Superconductivity at higher temperatures than normal (maybe even room temperature?) <br>(highly compressed noble gasses in channels as wires?)
* On the single bond level highly controlled application of extreme pressures makes noble metals for catalysis (which much more limited capabilities) obsolete. (See: [[Mechanosynthesis]])

=== Applications of high pressure in the macroscale ===

Obviously monolithic macroscopic tanks filled with extreme pressures naturally pose a considerable risk.
While pretty safe when undisturbed exposure to external force can easily lead to a violent explosion.
So unless absolutely necessary one will likely want to avoid such tanks.

In cases where surface area needs to be minimized.
* barely macroscopic (µm to mm scale): [[capsule transport]] of liquid density hydrogen at room temperature
* very big tanks but usually at rather low pressures: [[gem-gum balloon products]]

== The limits to bending ==

One should keep an eye on the average stress strain energy of all the nanomachinery in a product taken together
such that one does not accidentally produce combustion supporting or even explosive products.

When increasing stress and strain in crystolecules further and further one successively
looses:
* first chemical stability (ok when isolated in a vacuum as for most machinery the case)
* then thermal stability (we are very near the limit! – ok when cooled down enough permanently)
* and finally mechanical stability (fracture)
Actually testing the fracture of simple crystolecules in a controlled fashion should be very interesting.

== Related ==

* [[Non mechanical technology path]]; [[Superconduction]]; [[Magnetism]]
* [[High pressure modifications]]