TY - JOUR
T1 - Compressive response and helix formation of a semiflexible polymer confined in a nanochannel
AU - Hayase, Yumino
AU - Sakaue, Takahiro
AU - Nakanishi, Hiizu
N1 - Funding Information:
This work is supported by KAKENHI (No. 16H00804, “Fluctuation and Structure”) from MEXT, Japan, and JST, PRESTO (JPMJPR16N5).
Publisher Copyright:
©2017 American Physical Society
PY - 2017/5
Y1 - 2017/5
N2 - Configurations of a single semiflexible polymer is studied when it is pushed into a nanochannel in the case where the polymer persistence length lp is much longer than the channel diameter D: lp/D 1. Using numerical simulations, we show that the polymer undergoes a sequence of recurring structural transitions upon longitudinal compression: random deflection along the channel, a helix going around the channel wall, double-fold random deflection, double-fold helix, etc. We find that the helix transition can be understood as buckling of deflection segments, and the initial helix formation takes place at very small compression with no appreciable weak compression regime of the random deflection polymer.
AB - Configurations of a single semiflexible polymer is studied when it is pushed into a nanochannel in the case where the polymer persistence length lp is much longer than the channel diameter D: lp/D 1. Using numerical simulations, we show that the polymer undergoes a sequence of recurring structural transitions upon longitudinal compression: random deflection along the channel, a helix going around the channel wall, double-fold random deflection, double-fold helix, etc. We find that the helix transition can be understood as buckling of deflection segments, and the initial helix formation takes place at very small compression with no appreciable weak compression regime of the random deflection polymer.
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U2 - 10.1103/PhysRevE.95.052502
DO - 10.1103/PhysRevE.95.052502
M3 - Article
C2 - 28618466
AN - SCOPUS:85048465410
SN - 2470-0045
VL - 95
JO - Physical Review E
JF - Physical Review E
IS - 5
M1 - 052502
ER -