TY - JOUR
T1 - Entropic force of polymers on a cone tip
JF - EPL (Europhysics Letters)
Y1 - 2011
A1 - Mohammad F. Maghrebi
A1 - Yacov Kantor
A1 - Mehran Kardar
AB - We consider polymers attached to the tip of a cone, and the resulting force due to entropy loss on approaching a plate (or another cone). At separations shorter than the polymer radius of gyration R_g, the only relevant length scale is the tip-plate (or tip-tip) separation h, and the entropic force is given by F=A kT/h. The universal amplitude A can be related to (geometry dependent) correlation exponents of long polymers. We compute A for phantom polymers, and for self-avoiding (including star) polymers by epsilon-expansion, as well as by numerical simulations in 3 dimensions.
VL - 96
U4 - 66002
UR - http://arxiv.org/abs/1109.5658v2
CP - 6
J1 - EPL
U5 - 10.1209/0295-5075/96/66002
ER -