Abstract
The dynamics of polymer decompression from a compact state to swollen conformation can be formally described as nonlinear diffusion. We discuss two basic examples: (i) the expansion, or unfolding from a compact state, and (ii) the ejection of a compressed polymer through a pore. The problem can be solved exactly for case (i), but not for case (ii). Even in such situations, a scheme called uniform approximation is shown to be useful to get a physical insight involved. Its application to case (ii) is able to account for conflicting numerical data in a consistent way.
| Original language | English |
|---|---|
| Article number | 148302 |
| Journal | Physical Review Letters |
| Volume | 102 |
| Issue number | 14 |
| DOIs | |
| Publication status | Published - Apr 6 2009 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
Cite this
Dynamics of polymer decompression : Expansion, unfolding, and ejection. / Sakaue, Takahiro; Yoshinaga, Natsuhiko.
In: Physical Review Letters, Vol. 102, No. 14, 148302, 06.04.2009.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Dynamics of polymer decompression
T2 - Expansion, unfolding, and ejection
AU - Sakaue, Takahiro
AU - Yoshinaga, Natsuhiko
PY - 2009/4/6
Y1 - 2009/4/6
N2 - The dynamics of polymer decompression from a compact state to swollen conformation can be formally described as nonlinear diffusion. We discuss two basic examples: (i) the expansion, or unfolding from a compact state, and (ii) the ejection of a compressed polymer through a pore. The problem can be solved exactly for case (i), but not for case (ii). Even in such situations, a scheme called uniform approximation is shown to be useful to get a physical insight involved. Its application to case (ii) is able to account for conflicting numerical data in a consistent way.
AB - The dynamics of polymer decompression from a compact state to swollen conformation can be formally described as nonlinear diffusion. We discuss two basic examples: (i) the expansion, or unfolding from a compact state, and (ii) the ejection of a compressed polymer through a pore. The problem can be solved exactly for case (i), but not for case (ii). Even in such situations, a scheme called uniform approximation is shown to be useful to get a physical insight involved. Its application to case (ii) is able to account for conflicting numerical data in a consistent way.
UR - http://www.scopus.com/inward/record.url?scp=64649085711&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=64649085711&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.102.148302
DO - 10.1103/PhysRevLett.102.148302
M3 - Article
C2 - 19392490
AN - SCOPUS:64649085711
VL - 102
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 14
M1 - 148302
ER -