Design and Analysis of Nanoantenna Arrays for Imaging and Sensing Applications at Optical Frequencies

Isiklar G., Cetin I. C., Algun M., ERGÜL Ö. S.

ADVANCED ELECTROMAGNETICS, vol.8, no.2, pp.18-27, 2019 (ESCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 8 Issue: 2
  • Publication Date: 2019
  • Doi Number: 10.7716/aem.v8i2.1010
  • Journal Name: ADVANCED ELECTROMAGNETICS
  • Journal Indexes: Emerging Sources Citation Index (ESCI), Scopus
  • Page Numbers: pp.18-27
  • Middle East Technical University Affiliated: Yes

Abstract

We present computational analysis of nanoantenna arrays for imaging and sensing applications at optical frequencies. Arrays of metallic nanoantennas are considered in an accurate simulation environment based on surface integral equations and the multilevel fast multipole algorithm developed for plasmonic structures. Near-zone responses of the designed arrays to nearby nanoparticles are investigated in detail to demonstrate the feasibility of detection. We show that both metallic and dielectric nanoparticles, even with subwavelength dimensions, can be detected.