|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'506'133
Articles rated: 2609
26 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Length matters: Atomistic study of macroscopic analogs to short chain molecules | | Kyle J. Welch
; Clayton S. G. Kilmer
; Eric I. Corwin
; | | Date: |
Wed, 5 Nov 2014 23:31:54 GMT (1888kb,D) | | Abstract: | We use a bath of chaotic surface waves in water to mechanically and
macroscopically mimic the thermal behavior of a short articulated chain with
only nearest-neighbor interactions. The chaotic waves provide isotropic and
random agitation to which a temperature can be ascribed, allowing the chain to
passively explore its degrees of freedom in analogy to thermal motion. We track
the chain in real time and infer end-to-end potentials using Boltzmann
statistics. We extrapolate our results, by using Monte Carlo simulations of
self-avoiding polymers, to lengths not accessible in our system. In the long
chain limit we demonstrate universal scaling of the statistical parameters of
all chains in agreement with well-known predictions for self-avoiding walks.
However, we find that the behavior of chains below a characteristic length
scale is fundamentally different. We find that short chains have much greater
compressional stiffness then would be expected. However, chains rapidly soften
as length increases to meet with expected scalings. | | Source: | arXiv, 1411.1449 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER