TY - JOUR
T1 - Evidence for the extended de Gennes regime of a semiflexible polymer in slit confinement
AU - Cheong, Guo Kang
AU - Li, Xiaolan
AU - Dorfman, Kevin D.
N1 - Funding Information:
This work was supported by the National Institutes of Health (R01-HG006851). Computational resources were provided in part by the University of Minnesota Supercomputing Institute. We thank Liang Dai for useful discussions concerning Ref.
PY - 2018/2/8
Y1 - 2018/2/8
N2 - We use off-lattice, pruned-enriched Rosenbluth method simulations to compute the confinement free energy of a real wormlike chain of effective width w and persistence length lp in a slit of height H. For slit heights much larger than the persistence length of the polymer and much smaller than the thermal blob size, the excess free energy of the confined chain is consistent with a modified version of the scaling theory for the extended de Gennes regime in a channel that reflects the blob statistics in slit confinement. Explicitly, for channel sizes 2lp H 0.2lp2/w, the difference between the confinement free energy of the real chain and that of an ideal chain scales like w/H.
AB - We use off-lattice, pruned-enriched Rosenbluth method simulations to compute the confinement free energy of a real wormlike chain of effective width w and persistence length lp in a slit of height H. For slit heights much larger than the persistence length of the polymer and much smaller than the thermal blob size, the excess free energy of the confined chain is consistent with a modified version of the scaling theory for the extended de Gennes regime in a channel that reflects the blob statistics in slit confinement. Explicitly, for channel sizes 2lp H 0.2lp2/w, the difference between the confinement free energy of the real chain and that of an ideal chain scales like w/H.
UR - http://www.scopus.com/inward/record.url?scp=85042106391&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85042106391&partnerID=8YFLogxK
U2 - 10.1103/PhysRevE.97.022502
DO - 10.1103/PhysRevE.97.022502
M3 - Article
C2 - 29479576
AN - SCOPUS:85042106391
VL - 97
JO - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
JF - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
SN - 1539-3755
IS - 2
M1 - 022502
ER -