Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2008-01-22
Europhys. Lett. 82, 46001 (2008)
Physics
Condensed Matter
Soft Condensed Matter
6 pages, 3 figures
Scientific paper
10.1209/0295-5075/82/46001
We consider a polymer brush grafted to a surface (acting as an electrode) and bearing a charged group at its free end. Using a second distant electrode, the brush is subject to a constant electric field. Based on a coarse-grained continuum model, we calculate the average brush height and find that the brush can stretch or compress depending on the applied field and charge end-group. We further look at an undulation mode of the flat polymer brush and find that the electrostatic energy scales linearly with the undulation wavenumber, $q$. Competition with surface tension, scaling as $q^2$, tends to stabilize a lateral $q$-mode of the polymer brush with a well-defined wavelength. This wavelength depends on the brush height, surface separation, and several system parameters.
Andelman David
Joanny Jean-Francois
Tsori Yoav
No associations
LandOfFree
Interfacial Instability of Charged End-Group Polymer Brushes does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Interfacial Instability of Charged End-Group Polymer Brushes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interfacial Instability of Charged End-Group Polymer Brushes will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-95080