Numeric corrections to the proximity-force approximation for lateral Casimir forces

被引：0
|
作者：
Bao, Fanglin [1 ]
Shi, Kezhang [1 ,2 ]
机构：
[1] South China Normal Univ, South China Acad Adv Optoelect, Guangdong Prov Key Lab Opt Informat Mat & Technol, Ctr Opt & Electromagnet Res, Guangzhou 510006, Guangdong, Peoples R China
[2] Zhejiang Univ, JORCEP, Ctr Opt & Electromagnet Res, Hangzhou 310058, Zhejiang, Peoples R China
来源：
PHYSICA SCRIPTA | 2019年 / 94卷 / 02期
基金：
中国博士后科学基金;
关键词：
Casimir effect; proximity-force approximation; electromagnetic scattering; lateral Casimir force;
D O I：
10.1088/1402-4896/aaf279
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report a numeric investigation on the proximity-force approximation (PFA) for lateral Casimir forces between a sphere and a grating. Near-unity force correlations are found between the approximated force and the exact values, due to geometric effects. A minimal model yields a best-fit expression of the numeric correction to the PFA, for gratings in the dilute limit. Our results are not restricted to specific material of the sphere, and allows simple estimation of Casimir interactions for micro-scale spheres, and thus shall be useful in relevant experimental and engineering Casimir applications.
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页数：6
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