Casimir repulsive-attractive transition between liquid-separated dielectric metamaterial and metal

Casimir repulsive-attractive transition between liquid-separated dielectric metamaterial and metal
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液体分离介电超材料和金属之间的卡西米尔排斥-吸引转变

DOI:
10.1103/physrevb.98.035410
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发表时间:
2018-04
期刊:
影响因子:
3.7
通讯作者:
Meng Yonggang
Meng Yonggang
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Ye Yingqi;Hu Qian;Zhao Qian;Meng Yonggang

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我们研究了排斥-吸引的过渡,被视为稳定的平衡,金和电介质超材料之间的Mie共振沉浸在各种流体中,由于重力,浮力和Casimir力之间的相互作用不同的几何形状组成的平行板和球悬浮在基板上。与天然材料相比,Mie超材料获得了更宽的稳定平衡间距范围。研究了Mie超材料结构参数和系统几何参数与稳定平衡点间距的关系,给出了通过改变Mie超材料结构参数来调整系统平衡点位置的简单规律.特别地,还考虑了Mie超材料的磁导率对平衡分离的影响。我们的工作是有希望的潜在应用在微/纳米纤维技术的无摩擦悬浮。
We study the repulsive-attractive transition, regarded as stable equilibrium, between gold and dielectric metamaterial based on Mie resonance immersed in various fluids due to the interplay of gravity, buoyancy and Casimir force among different geometries consisting of parallel plates and spheres levitated over substrates. A wider range of separation distance of stable equilibrium is obtained with Mie metamaterial than natural materials. We investigate the relationship between separation distance of stable equilibrium and constructive parameters of Mie metamaterial and geometric parameters of the system, and provide simple rules to tune the equilibrium position by modifying constructive parameters of Mie metamaterial. Particularly, the effect of permeability of Mie metamaterial on equilibrium separation is also considered. Our work is promising for potential applications in frictionless suspension in micro/nanofabrication technologies.
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