Isotropic magnetic response of silicon carbide microspheres at mid-infrared wavelength

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• 作者：Xiaoping Li ; Chengliang Yang ; Dan Jia ; Zhaoliang Cao ; Quanquan Mu ; Lifa Hu ; Zenghui Peng ; Yonggang Liu ; Lishuang Yao ; Li Xuan
• 关键词：Magnetic response ; Silicon carbide ; Negative permeability
• 刊名：Optics and Laser Technology
• 出版年：2013
• 出版时间：30 December, 2013
• 年：2013
• 卷：54
• 期：Complete
• 页码：284-287
• 全文大小：822 K

文摘

Base on the Lorentz-Lorenz formula, magnetic response in metamaterial composed of randomly dispersive SiC microspheres is demonstrated theoretically around 13 ¦Ìm mid-infrared wavelength. By adjusting the microspheres volume filling fraction the permeabilities both less than one and more than one can be obtained. Through parameters optimization, isotropic negative permeability is represented. Electromagnetic simulation shows the mechanism for magnetic effects and negative permeability in SiC microspheres.