Design and study the performance of optical nanoantenna

A. Hassan, Gufran; A. Hassan, Jawad

doi:10.30772/qjes.v12i2.593

	Design and study the performance of optical nanoantenna
Al-Qadisiyah Journal for Engineering Sciences
Volume 12, Issue 2, June 2019, Pages 84-89 PDF (1.14 M)
DOI: 10.30772/qjes.v12i2.593
Authors
Gufran A. Hassan; Jawad A. Hassan
Department of electronic and communication engineering,University of Baghdad Institute of Laser for Postgraduate Studies,baghdad -iraq
Abstract
Recently, the light metallic interaction of nanostructures has grown to be an area of intensive care research due to advances in modern fabrication techniques. Unique effects have been observed in a nanostructure, and their applications have been found in various areas like in the manipulation of light on the nanometer scale. In this paper Nanoantenna has been introduced and invetigated by studing the effect of changing its parameters such as (shape, length, thickness, and the gap distance between two nanostructures) on the response of the nanoantenna (far field directivity, optical resonance frequency, and S-parameter). Here, a bow tie antenna has been chosen and additional parameters have been considered in the simulation, such as antenna thickness and material, and substrate material . The simulations have been generated using computer simulation technology (CST) studio. Optical antenna is performed from a pair of nanoparticles brought in close nearness, these pairs are separated by small gap to make a high electric field in its gap region. This feature can be employed for biosensing or SERS to improve the detection limit and measure the presence of single molecules.
Keywords
Optical; Nanoantenna; S-parameter; Resonance Freq

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