In-depth study on resonant tunneling for subwavelength imaging

We report new frequency bands for subwavelength imaging by using the resonant tunneling method which have not been explored previously. As per the existing theory of resonant tunneling, imaging frequency is limited for a certain number of crystals. However, after conducting an analytical analysis ov...

Full description

Saved in:
Bibliographic Details
Published inScientific reports Vol. 8; no. 1; pp. 15535 - 9
Main Authors Anzan-Uz-Zaman, Md, Song, Kyungjun, Lee, EunJoong, Hur, Shin
Format Journal Article
LanguageEnglish
Published England Nature Publishing Group 19.10.2018
Nature Publishing Group UK
Subjects
Acoustics
Crystals
Image processing
Periodicity
Online AccessGet full text

Cover

More Information
Summary:We report new frequency bands for subwavelength imaging by using the resonant tunneling method which have not been explored previously. As per the existing theory of resonant tunneling, imaging frequency is limited for a certain number of crystals. However, after conducting an analytical analysis over a wide range of frequencies, we observed that higher frequencies do exist for subwavelength imaging. We verified this observation both numerically and experimentally. We extended our study to observe the effect of lattice periodicity on image resolution. By reducing periodicity during experiment, we achieved a resolution of λ/9.5 at the conventional region and λ/2.45 at the higher band region.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-018-33653-y