Nontouching nanoparticle diclusters bound by repulsive and attractive Casimir forces.
Nontouching nanoparticle diclusters bound by repulsive and attractive Casimir forces.
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DOI：
10.1103/physrevlett.104.160402
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发表时间：
2009-12
影响因子：
8.6
通讯作者：
Alejandro W. Rodriguez;A. McCauley;D. Woolf;F. Capasso;J. Joannopoulos;Steven G. Johnson
中科院分区：
文献类型：
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作者：
Alejandro W. Rodriguez;A. McCauley;D. Woolf;F. Capasso;J. Joannopoulos;Steven G. Johnson
我们提出了一个方案，用于获得稳定的Casimir悬浮液的介电nontouching物体浸没在流体中，验证在这里的各种几何形状组成的乙醇分离的介电球体和半无限平板。稳定性由真实的电介质（单片）材料的色散特性引起。这种效应的一个后果是稳定的配置（集群）的紧凑型物体的可能性，我们说明通过一个分子的两球双集群的几何形状组成的两个绑定球悬浮在一个黄金板。我们的计算还揭示了材料和几何色散之间的强烈相互作用，这是由在平面与球形几何形状中观察到的定性不同的稳定性行为所例示的。
We present a scheme for obtaining stable Casimir suspension of dielectric nontouching objects immersed in a fluid, validated here in various geometries consisting of ethanol-separated dielectric spheres and semi-infinite slabs. Stability is induced by the dispersion properties of real dielectric (monolithic) materials. A consequence of this effect is the possibility of stable configurations (clusters) of compact objects, which we illustrate via a molecular two-sphere dicluster geometry consisting of two bound spheres levitated above a gold slab. Our calculations also reveal a strong interplay between material and geometric dispersion, and this is exemplified by the qualitatively different stability behavior observed in planar versus spherical geometries.