Bickel T, Marques C, Jeppesen C
LDFC-UMR 7506, 3 rue de l'Université, 67084 Strasbourg Cedex, France.
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics. 2000 Jul;62(1 Pt B):1124-7. doi: 10.1103/physreve.62.1124.
Achieving control of membrane shape and topology is of crucial importance to regulate function and performance of many systems in the realms of biology, physics, and chemical sciences. The design of a kit of versatile microscopic tools for tuning the shapes of fluid membranes relies ultimately on the possibility of tailoring molecules for applying a given, well-chosen force, to the self-assembled interfaces. Here we discuss theoretically the ability of grafted polymers to perform as mesoscopic pressure patches. We compute the pressure that a grafted polymer applies to the supporting surface. We also show that this entropic pressure leads to a well-defined pinched form of the membranes. Moreover, new membrane-mediated forces result from the action of these pressure tools, enabling action upon their spatial distribution along the membrane surface.
实现对膜形状和拓扑结构的控制对于调节生物学、物理学和化学科学领域中许多系统的功能和性能至关重要。设计一套用于调节流体膜形状的通用微观工具，最终依赖于定制分子的可能性，以便将给定的、精心选择的力施加到自组装界面上。在这里，我们从理论上讨论接枝聚合物作为介观压力补丁的能力。我们计算接枝聚合物施加在支撑表面上的压力。我们还表明，这种熵压力会导致膜呈现出明确的收缩形式。此外，这些压力工具的作用产生了新的膜介导力，使其能够作用于它们沿膜表面的空间分布。
