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Title: A toroidal metamaterial switch
Authors: Gupta, Manoj
Srivastava, Yogesh Kumar
Singh, Ranjan
Keywords: Toroidal Dipole
Issue Date: 2018
Source: Gupta, M., Srivastava, Y. K., & Singh, R. (2018). A Toroidal Metamaterial Switch. Advanced Materials, 30(4), 1704845-. doi:10.1002/adma.201704845
Series/Report no.: Advanced Materials
Abstract: Toroidal dipole is a localized electromagnetic excitation that plays an important role in determining the fundamental properties of matter due to its unique potential to excite nearly nonradiating charge–current configuration. Toroidal dipoles are recently discovered in metamaterial systems where it is shown that these dipoles manifest as poloidal currents on the surface of a torus and are distinctly different from the traditional electric and magnetic dipoles. Here, an active toroidal metamaterial switch is demonstrated in which the toroidal dipole can be dynamically switched to the fundamental electric dipole or magnetic dipole, through selective inclusion of active elements in a hybrid metamolecule design. Active switching of nonradiating toroidal configuration into highly radiating electric and magnetic dipoles can have significant impact in controlling the electromagnetic excitations in free space and matter that can have potential applications in designing efficient lasers, sensors, filters, and modulators.
ISSN: 0935-9648
DOI: 10.1002/adma.201704845
Rights: © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.This is the peer reviewed version of the following article: Gupta, M., Srivastava, Y. K., & Singh, R. (2018). A Toroidal Metamaterial Switch. Advanced Materials, 30(4), 1704845-, which has been published in final form at This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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