Enhanced local fields in aperiodic rotationally symmetric nanosphere arrays

F. Namin, X. Wang, Douglas Henry Werner

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Local field enhancements in aperiodic arrays of gold nanospheres are studied. The arrays are based on three aperiodic tilings of the plane which display 5, 7, and 8 fold rotational symmetries that are not possible in conventional periodic arrays. Electromagnetic (EM) field calculations are based on the analytical generalized Mie theory (GMT). It will be shown that despite the fact that aperiodic arrays are much sparser than periodic arrays, they display larger local field enhancements. Also due to their higher degree of rotational symmetry, the field enhancements are less dependent on the polarization of the incident radiation. Finally, it will be shown that local fields can be further enhanced by optimally placing perturbing spheres within the prototiles that comprise the aperiodic arrays.

Original languageEnglish (US)
Title of host publication2012 IEEE International Symposiumon Antennas and Propagation, APSURSI 2012 - Proceedings
DOIs
StatePublished - Dec 10 2012
EventJoint 2012 IEEE International Symposium on Antennas and Propagation and USNC-URSI National Radio Science Meeting, APSURSI 2012 - Chicago, IL, United States
Duration: Jul 8 2012Jul 14 2012

Publication series

NameIEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
ISSN (Print)1522-3965

Other

OtherJoint 2012 IEEE International Symposium on Antennas and Propagation and USNC-URSI National Radio Science Meeting, APSURSI 2012
CountryUnited States
CityChicago, IL
Period7/8/127/14/12

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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