TY - JOUR
T1 - Adsorption transition of a polyelectrolyte on a high-dielectric charged substrate
AU - Cheng, Chi Ho
AU - Lai, Pik Yin
PY - 2004
Y1 - 2004
N2 - The behavior of a polyelectrolyte adsorbed on a charged surface of high-dielectric constant is studied by both Monte Carlo simulation and analytical methods. It is found that in a low ionic strength medium, the transition is first-order with the repulsive charged surface. The surface monomer density, which is the order parameter of the adsorption transition, follows a linear relation with surface charge density. It indicates that the polyelectrolyte is compressed on the substrate without any conformational change before the desorption. Finally, a different scaling law for the layer thickness is derived and verified by simulation.
AB - The behavior of a polyelectrolyte adsorbed on a charged surface of high-dielectric constant is studied by both Monte Carlo simulation and analytical methods. It is found that in a low ionic strength medium, the transition is first-order with the repulsive charged surface. The surface monomer density, which is the order parameter of the adsorption transition, follows a linear relation with surface charge density. It indicates that the polyelectrolyte is compressed on the substrate without any conformational change before the desorption. Finally, a different scaling law for the layer thickness is derived and verified by simulation.
UR - http://www.scopus.com/inward/record.url?scp=85036341406&partnerID=8YFLogxK
U2 - 10.1103/PhysRevE.70.061805
DO - 10.1103/PhysRevE.70.061805
M3 - 期刊論文
C2 - 15697395
AN - SCOPUS:41349116517
VL - 70
SP - 4
JO - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
JF - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
SN - 1539-3755
IS - 6
ER -