Near-Infrared Super Resolution Imaging with Metallic Nanoshell Particle Chain Array

TL;DR

This paper introduces a lensless near-infrared super-resolution imaging system using an array of metallic nanoshell particle chains, capable of reconstructing high-resolution images by plasmonic transfer of near-field components.

Contribution

It presents a novel lensless imaging approach employing metallic nanoshell chains that achieve super-resolution in the near-infrared region.

Findings

Array demonstrates super-resolution imaging at near-infrared wavelengths

Image quality depends on source coherence and array distance

Finite element method confirms plasmonic transfer capability

Abstract

We propose a near-infrared super resolution imaging system without a lens or a mirror but with an array of metallic nanoshell particle chain. The imaging array can plasmonically transfer the near-field components of dipole sources in the incoherent and coherent manners and the super resolution images can be reconstructed in the output plane. By tunning the parameters of the metallic nanoshell particle, the plasmon resonance band of the isolate nanoshell particle red-shifts to the near-infrared region. The near-infrared super resolution images are obtained subsequently. We calculate the field intensity distribution at the different planes of imaging process using the finite element method and find that the array has super resolution imaging capability at near-infrared wavelengths. We also show that the image formation highly depends on the coherence of the dipole sources and the image-array distance.