Difference between revisions of "Persistence length"

Latest revision as of 13:08, 19 November 2024

(wiki-TODO: Maybe add an illustation of the concept.)

Especially softer, more elastic structures that are common with early foldamer technologies such as
3D structural DNA nanotechnology tend to bend a lot.
If improperly designed then so much so that effectively zero stiffness remains (where this is not so desired).

For homogeneous straight solid rods there is math for quantifying this.
The "persistence length" as is topic of this page.
Well not the point of loss of all stiffness but the point of a certain huge amount of bending.
Still this is about how far one can go before (way) too much of stiffness is lost.

Note that even with a significant amount of bending (easily visible by human eye in microscopy images)
things like tether assisted assembly could still be viable.
Side note: For the tethers of this method zero stiffness IS desired,
but the structure around must not loose all of its structural integrity and
feature some minimum amount of stiffness.

Also even very low stiffness technologies can be made to barely flex at all by resorting to sticking to very bulky structures only.
And adding in finer details finer details then using stiffer technologies exclusively:
See: Foldamer technology stiffness nesting ( & Stiffness focusing)

Related

• Self-assemby & System complexity scaling with self-assembly
• 3D structural DNA nanotechnology
• Tether assisted assembly
• Foldamer printer & Robo approach
• Foldamer technology stiffness nesting & Stiffness focusing

• Circumsembly - Multiple parallel paths can make for stiffer structures => longer persistence length (depending on structural fill density)

External links

• https://en.wikipedia.org/wiki/Persistence_length