TY  - JOUR
AU  - Ramachandran, S.
AU  - Komura, S.
AU  - Seki, K.
AU  - Gompper, G.
TI  - Dynamics of a polymer chain confined in a membrane
JO  - The European physical journal / E
VL  - 34
SN  - 1292-8941
CY  - Berlin
PB  - Springer
M1  - PreJuSER-15475
SP  - 46
PY  - 2011
N1  - We thank H. Diamant, Y. Fujitani, M. Imai, T. Kato and N. Oppenheimer for useful discussions. This work was supported by KAKENHI (Grant-in-Aid for Scientific Research) on Priority Area "Soft Matter Physics" and Grant No. 21540420 from the Ministry of Education, Culture, Sports, Science and Technology of Japan.
AB  - We present a Brownian dynamics theory with full hydrodynamics (Stokesian dynamics) for a Gaussian polymer chain embedded in a liquid membrane which is surrounded by bulk solvent and walls. The mobility tensors are derived in Fourier space for the two geometries, namely, a free membrane embedded in a bulk fluid, and a membrane sandwiched by the two walls. Within the preaveraging approximation, a new expression for the diffusion coefficient of the polymer is obtained for the free-membrane geometry. We also carry out a Rouse normal mode analysis to obtain the relaxation time and the dynamical structure factor. For large polymer size, both quantities show Zimm-like behavior in the free-membrane case, whereas they are Rouse-like for the sandwiched membrane geometry. We use the scaling argument to discuss the effect of excluded-volume interactions on the polymer relaxation time.
KW  - Diffusion
KW  - Hydrodynamics
KW  - Membrane Proteins: chemistry
KW  - Membrane Proteins: metabolism
KW  - Molecular Dynamics Simulation
KW  - Particle Size
KW  - Polymers: chemistry
KW  - Polymers: metabolism
KW  - Solvents: chemistry
KW  - Membrane Proteins (NLM Chemicals)
KW  - Polymers (NLM Chemicals)
KW  - Solvents (NLM Chemicals)
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:21562968
UR  - <Go to ISI:>//WOS:000291296600001
DO  - DOI:10.1140/epje/i2011-11046-3
UR  - https://juser.fz-juelich.de/record/15475
ER  -