Please use this identifier to cite or link to this item:
|Title:||Electromagnetic field attractor made of gradient index metamaterials||Authors:||Yang, Y.
|Issue Date:||Apr-2012||Citation:||Yang, Y., Leng, L.Y., Wang, N., Ma, Y., Ong, C.K. (2012-04). Electromagnetic field attractor made of gradient index metamaterials. Journal of the Optical Society of America A: Optics and Image Science, and Vision 29 (4) : 473-475. ScholarBank@NUS Repository. https://doi.org/10.1364/JOSAA.29.000473||Abstract:||We present a device that is designed with varying permittivity ε such that an electromagnetic wave in the Kband of the microwave regime entering it will bend inward towards the core. The core is made of silicon composites. We follow the distribution formula of the permittivity for the device derived by Narimanov and Kildishev using the optical-mechanical analogy. The diameter of the device is 14 cm, and it is constructed out of 21 rings of two different types of etched printed circuit boards, as well as dielectric powders as adding filling materials. The experimental wave intensity profile, based on parallel plate measurements for the cases where the incident plane wave is slightly displaced to the top of the center of the device and the case of on center incidence, are presented and discussed. In spite of some mismatch of the core and metamaterial structures of the device found, approximately 80% of the wave still manages to reach the core of the device and gets trapped and absorbed. Broadband properties of the device are also investigated. © 2012 Optical Society of America.||Source Title:||Journal of the Optical Society of America A: Optics and Image Science, and Vision||URI:||http://scholarbank.nus.edu.sg/handle/10635/96405||ISSN:||10847529||DOI:||10.1364/JOSAA.29.000473|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Feb 14, 2020
WEB OF SCIENCETM
checked on Feb 6, 2020
checked on Feb 16, 2020
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.