Alternating-current relaxation of a rotating metallic particle

doi:10.1088/1674-1056/25/6/067202

中国物理B ›› 2016, Vol. 25 ›› Issue (6): 67202-067202.doi: 10.1088/1674-1056/25/6/067202

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Alternating-current relaxation of a rotating metallic particle

Guo-Xi Nie(聂国熹), Wen-Jia Tian(田文佳), Ji-Ping Huang(黄吉平), Guo-Qing Gu(顾国庆)

1 Department of Physics, State Key Laboratory of Surface Physics, and Collaborative Innovation Center of Advanced Microstructures, Fudan University, Shanghai 200433, China;
2 Polar Research Institute of China, Shanghai 200136, China;
3 School of Information Science and Technology, East China Normal University, Shanghai 200062, China

收稿日期:2016-02-19 修回日期:2016-03-16 出版日期:2016-06-05 发布日期:2016-06-05
通讯作者: Ji-Ping Huang E-mail:jphuang@fudan.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 11222544), the Fok Ying Tung Education Foundation (Grant No. 131008), the Program for New Century Excellent Talents in University, China (Grant No. NCET-12-0121), and the National Key Basic Research Program of China (Grant No. 2011CB922004).

Alternating-current relaxation of a rotating metallic particle

Guo-Xi Nie(聂国熹)¹, Wen-Jia Tian(田文佳)^1,2, Ji-Ping Huang(黄吉平)¹, Guo-Qing Gu(顾国庆)³

1 Department of Physics, State Key Laboratory of Surface Physics, and Collaborative Innovation Center of Advanced Microstructures, Fudan University, Shanghai 200433, China;
2 Polar Research Institute of China, Shanghai 200136, China;
3 School of Information Science and Technology, East China Normal University, Shanghai 200062, China

Received:2016-02-19 Revised:2016-03-16 Online:2016-06-05 Published:2016-06-05
Contact: Ji-Ping Huang E-mail:jphuang@fudan.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 11222544), the Fok Ying Tung Education Foundation (Grant No. 131008), the Program for New Century Excellent Talents in University, China (Grant No. NCET-12-0121), and the National Key Basic Research Program of China (Grant No. 2011CB922004).

摘要/Abstract

摘要：

Based on a first-principles approach, we establish an alternating-current (AC) relaxation theory for a rotating metallic particle with complex dielectric constant ε_α = ε_α-σ_α/ω₀. Here ε_α is the real part, σ_α the conductivity, ω₀ the angular frequency of an AC electric field, and i=√-1. Our theory yields an accurate interparticle force, which is in good agreement with the existing experiment. The agreement helps to show that the relaxations of two kinds of charges, namely, surface polarized charges (described by ε_α) and free charges (corresponding to σ_α), contribute to the unusually large reduction in the attracting interparticle force. This theory can be adopted to determine the relaxation time of dynamic particles in various fields.

关键词: AC relaxation theory, rotating metallic particle, interparticle force

Abstract:

Key words: AC relaxation theory, rotating metallic particle, interparticle force

中图分类号: (Relaxation times and mean free paths)

72.15.Lh

45.20.dc (Rotational dynamics)

聂国熹, 田文佳, 黄吉平, 顾国庆. Alternating-current relaxation of a rotating metallic particle[J]. 中国物理B, 2016, 25(6): 67202-067202.

Guo-Xi Nie(聂国熹), Wen-Jia Tian(田文佳), Ji-Ping Huang(黄吉平), Guo-Qing Gu(顾国庆). Alternating-current relaxation of a rotating metallic particle[J]. Chin. Phys. B, 2016, 25(6): 67202-067202.

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Alternating-current relaxation of a rotating metallic particle

Alternating-current relaxation of a rotating metallic particle

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