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Rectification of energy transport in nonlinear metamaterials via ratchets

DSpace at IIT Bombay

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Title Rectification of energy transport in nonlinear metamaterials via ratchets
 
Creator BISWAS, P
DAS, S
SARKAR, P
CHOUDHARY, K
BAIDYA, P
GIRI, P
GHOSAL, A
BANDYOPADHYAY, AK
 
Subject NEGATIVE-INDEX METAMATERIAL
SOLITONS
AMPLIFICATION
RESONANCES
GENERATION
REFRACTION
LOSSES
KINKS
WAVES
 
Description The presence of discrete breathers (DBs) has already been described in nonlinear photonic materials, such as ferroelectrics and metamaterials (MMs) by the Klein-Gordon (K-G) approach. Rectification of energy transport in MMs in the presence of an appropriate external field is studied via symmetry breaking leading to directed energy transport or ratchet behaviour. Based on the earlier development of the K-G equation in a MM system with a split-ring resonator for antenna applications, a theoretical model for current density is worked out by symmetry analysis and its violation to characterize the ratchet effect. The time-averaged current shows interesting results against phase shift in the ac driver. These data are further related to various parameters, such as coupling and damping in the system. For MMs, this opens a new application for rectification using ratchets.
 
Publisher IOP PUBLISHING LTD
 
Date 2014-10-17T04:31:29Z
2014-10-17T04:31:29Z
2013
 
Type Article
 
Identifier JOURNAL OF PHYSICS D-APPLIED PHYSICS, 46(20)
0022-3727
1361-6463
http://dx.doi.org/10.1088/0022-3727/46/20/205102
http://dspace.library.iitb.ac.in/jspui/handle/100/15955
 
Language en