Fluctuation-Induced Interactions between Rods on a Membrane

Дата и время публикации : 1996-04-11T14:52:28Z

Авторы публикации и институты :
Ramin Golestanian
Mark Goulian
Mehran Kardar

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: REVTEX, 14 pages, with 2 Postscript figures
Первичная категория: cond-mat

Все категории : cond-mat

Краткий обзор статьи: We consider the interaction between two rods embedded in a fluctuating surface. The modification of fluctuations by the rods leads to an attractive long-range interaction between them. We consider fluctuations governed by either surface tension (films) or bending rigidity (membranes). In both cases the interaction falls off with the separation of the rods as $1/R^4$. The orientational part of the interaction is proportional to $cos^2left[ theta_1+theta_2 right]$ in the former case, and to $cos^2left[ 2left(theta_1+theta_2right) right]$ in the latter, where $theta_1$ and $theta_2$ are angles between the rods and the line joining them. These interactions are somewhat reminiscent of dipolar forces and will tend to align collections of such rods into chains.

Category: Physics