| | |
| | |
Stat |
Members: 3645 Articles: 2'501'711 Articles rated: 2609
20 April 2024 |
|
| | | |
|
Article overview
| |
|
Diffusion of single long polymers in fixed and low density matrix of obstacles confined to two dimensions | Ryuzo Azuma
; Hajime Takayama
; | Date: |
2 Jun 1999 | Subject: | Soft Condensed Matter | cond-mat.soft | Abstract: | Diffusion properties of a self-avoiding polymer embedded in regularly distributed obstacles with spacing a=20 and confined in two dimensions is studied numerically using the extended bond fluctuation method which we have developed recently. We have observed for the first time to our knowledge, that the mean square displacement of a center monomer $phi_{M/2}(t)$ exhibits four dynamical regimes, i.e., $phi_{M/2}(t) sim t^{
u_m}$ with $
u_msim 0.6$, 3/8, 3/4, and 1 from the shortest to longest time regimes. The exponents in the second and third regimes are well described by segmental diffusion in the ``self-avoiding tube’’. In the fourth (free diffusion) regime, we have numerically confirmed the relation between the reptation time $ au_d$ and the number of segments $M, au_dpropto M^3$. | Source: | arXiv, cond-mat/9906021 | 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:
| |