Theoretical investigations on microwave Fano resonances in 3D-printablehollow dielectric resonators

Collection with item attached
2017
Item details URL
http://open-repository.kisti.re.kr/cube/handle/open_repository/486171.do
DOI
10.1038/s41598-017-16501-3
Title
Theoretical investigations on microwave Fano resonances in 3D-printablehollow dielectric resonators
Description
We acknowledge financial support from National Research Foundation (NRF)grants (No. 2015001948, NRF-2017R1E1A2A01077226), Research fund(1.170007.01) of UNIST (Ulsan National Institute of Science andTechnology).
abstract
High-index dielectric structures have recently been studied intensively for Mie resonances at optical frequencies. These dielectric structures can enable extreme light manipulation, similar to that which has been achieved with plasmonic nanostructures. In the microwave region, dielectric resonators and metamaterials can be fabricated directly using 3D printing, which is advantageous for fabricating structurally complicated 3D geometries. It is therefore especially suitable for the fabrication of subwavelength structures. Here we report theoretical investigations on microwave Fano resonances in 3D-printable dielectric materials and structures. In particular, we propose and analyse 3D-printable, hollow, dielectric resonators with relatively low refractive indices, which exhibit sharp Fano resonances. We can control the interaction between bright and dark modes in a coupled dielectric particle pair by adjusting the inner-hole size, and thus we can increase the radiative Q factors further. We also find that Fano resonances in these hollow dielectric resonators are very sensitive to an index change in the surrounding medium, which could be useful for long-distance environmental sensing. New possibilities and opportunities are opening up with the rapid development of 3D-printing technologies. Our findings and the detailed investigations reported here can provide useful guidelines for future photonic devices based on 3D-printable materials and structures.
provenance
Made available in Cube on 2018-09-28T16:00:26Z (GMT). No. of bitstreams: 0
language
English
author
Lee, Eunsongyi
Seo, In Cheol
Jeong, Hoon Yeub
An, Soo-Chan
Jun, Young Chul
orcid
Jun, Young Chul/0000-0002-7578-8811
accessioned
2018-09-28T16:00:26Z
available
2018-09-28T16:00:26Z
issued
2017
citation
SCIENTIFIC REPORTS(7)
issn
2045-2322
uri
http://open-repository.kisti.re.kr/cube/handle/open_repository/486171.do
Funder
과학기술정보통신부
Funding Program
울산과학기술원연구운영비지원(0.5)
Project ID
1711063311
Jurisdiction
Rep.of Korea
Project Name
U-K Brand 육성사업
rights
openAccess
type
article


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