Publication detail

Plasmonic Antennas with Electric, Magnetic, and Electromagnetic Hot Spots Based on Babinet's Principle

HRTOŇ, M. KONEČNÁ, A. HORÁK, M. ŠIKOLA, T. KŘÁPEK, V.

Original Title

Plasmonic Antennas with Electric, Magnetic, and Electromagnetic Hot Spots Based on Babinet's Principle

Type

journal article in Web of Science

Language

English

Original Abstract

We theoretically study plasmonic antennas featuring areas of extremely concentrated electric or magnetic field, known as hot spots. We combine two types of electric-magnetic complementarity to increase the degree of freedom for the design of the antennas: bowtie and diabolo duality and Babinet's principle. We evaluate the figures of merit for different plasmon-enhanced optical spectroscopy methods and optical trapping: field enhancement, decay rate enhancement, quality factor of the plasmon resonances, and trapping potential depth. The role of Babinet's principle in interchanging electric and magnetic field hot spots and its consequences for practical antenna design are discussed. In particular, diabolo antennas exhibit slightly better performance than bowties in terms of larger field enhancement and larger Q factor. For specific resonance frequency, diabolo antennas are considerably smaller than bowties, which makes them favorable for the integration into more complex devices but also makes their fabrication more demanding in terms of spatial resolution. Finally, we propose a Babinet-type dimer antenna featuring electromagnetic hot spot with both the electric and magnetic field components treated on an equal footing.

Keywords

FIELD; METAMATERIALS; GENERATION; SCATTERING; APERTURE; HOTSPOTS

Authors

HRTOŇ, M.; KONEČNÁ, A.; HORÁK, M.; ŠIKOLA, T.; KŘÁPEK, V.

Released

19. 5. 2020

Publisher

American Physical Society

Location

COLLEGE PK

ISBN

2331-7019

Periodical

Physical Review Applied

Year of study

13

Number

5

State

United States of America

Pages from

1

Pages to

14

Pages count

14

URL

https://journals.aps.org/prapplied/abstract/10.1103/PhysRevApplied.13.054045

Full text in the Digital Library

http://hdl.handle.net/11012/195661

BibTex

@article{BUT164333,
  author="Martin {Hrtoň} and Andrea {Konečná} and Michal {Horák} and Tomáš {Šikola} and Vlastimil {Křápek}",
  title="Plasmonic Antennas with Electric, Magnetic, and Electromagnetic Hot Spots Based on Babinet's Principle",
  journal="Physical Review Applied",
  year="2020",
  volume="13",
  number="5",
  pages="1--14",
  doi="10.1103/PhysRevApplied.13.054045",
  issn="2331-7019",
  url="https://journals.aps.org/prapplied/abstract/10.1103/PhysRevApplied.13.054045"
}