文章基本信息

标题：Molecular sorting by stochastic resonance
本地全文：下载
作者：Damien Alcor ; Vincent Croquette ; Ludovic Jullien 等
期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：2004
卷号：101
期号：22
页码：8276-8280
DOI：10.1073/pnas.0400663101
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：To sort a targeted species from a mixture, we introduce a procedure that relies on the enhancement of its effective diffusion coefficient. We use the formation of a host-guest complex between {alpha}-cyclodextrin and a dye to evidence the dye dispersion when the medium is submitted to an oscillating field. In particular, we demonstrate that the effective diffusion coefficient of the dye may be increased far beyond its intrinsic value by tuning the driving field frequency in the stochastic resonance regime. We use this effect to selectively sort from a mixture a dye that is addressed by its rate constants for association with {alpha}-cyclodextrin.