Critical Casimir forces in colloidal suspensions on chemically patterned surfaces.
Critical Casimir forces in colloidal suspensions on chemically patterned surfaces.
复制标题
化学图案表面上的胶体悬浮液中的临界卡西米尔力。
DOI：
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发表时间：
2008
影响因子：
8.6
通讯作者：
C. Bechinger
中科院分区：
文献类型：
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作者：
F. Soyka;O. Zvyagolskaya;C. Hertlein;L. Helden;C. Bechinger
我们研究了胶体颗粒在化学图案化基底存在下浸入水和2，6-二甲基吡啶的二元液体混合物中的行为。接近混合物的临界点，颗粒受到临界Casimir相互作用，力分量垂直和平行于表面。由于这些相互作用的强度和符号可以通过表面性质和混合物温度的变化来调整，临界卡西米尔力允许形成高度有序的单层，但也扩展了胶体作为模型系统的使用。
We investigate the behavior of colloidal particles immersed in a binary liquid mixture of water and 2,6-lutidine in the presence of a chemically patterned substrate. Close to the critical point of the mixture, the particles are subjected to critical Casimir interactions with force components normal and parallel to the surface. Because the strength and sign of these interactions can be tuned by variations in the surface properties and the mixtures temperature, critical Casimir forces allow the formation of highly ordered monolayers but also extend the use of colloids as model systems.