Controlling surface morphologies by time-delayed feedback

被引：2

作者：

Block, M. ^{[1
]}

Schmittmann, B.

Schoell, E.

机构：

[1] Tech Univ Berlin, Inst Theoret Phys, D-10623 Berlin, Germany

[2] Virginia Tech, Dept Phys, Blacksburg, VA 24061 USA

来源：

PHYSICAL REVIEW B | 2007年 / 75卷 / 23期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.75.233414

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We propose a method to control the roughness of a growing surface via a time-delayed feedback scheme. The method is very general and can be applied to a wide range of nonequilibrium growth phenomena, from solid-state epitaxy to tumor growth. Possible experimental realizations are suggested. As an illustration, we consider the Kardar-Parisi-Zhang equation [Phys. Rev. Lett. 56, 889 (1986)] in 1+1 dimensions and show that the effective growth exponent of the surface width can be stabilized at any desired value in the interval [0.25, 0.33], for a significant length of time.

引用

页数：4

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