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Rapid super-resolution imaging of sub-surface nanostructures beyond diffraction limit by high refractive index microsphere optical nanoscopy

Lookup NU author(s): Dr Seoungjun Lee

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Abstract

Sub surface nanostructures cannot be observed by scanning electronic microscopy or standard scanning probe microscopy. They are also outside the resolution limit of standard optical microscopes. In this paper, we demonstrate super-resolution imaging of sub-surface nanostructures beyond the optical diffraction limit. Sub-surface Blu-ray recorded data structures (100-200 nm) have been observed directly with submerged microsphere optical nanoscopy (SMON) using Ti02-Ba0-ZnO glass microspheres (refractive index=2.2) of 60 pm diameter immersed in water coupled with a standard optical microscope. Theoretical analysis of the imaging phenomena was carried out by the characteristics of electrical field Poynting vectors and photonic nanojets. (C) 2014 Elsevier B.V All rights reserved,

Publication metadata

Author(s): Lee SJ; Li L

Publication type: Article

Publication status: Published

Journal: Optics Communications

Year: 2015

Volume: 334

Pages: 253-257

Print publication date: 01/01/2015

Online publication date: 04/09/2014

Acceptance date: 19/08/2014

ISSN (print): 0030-4018

ISSN (electronic): 1873-0310

Publisher: Elsevier BV / North-Holland

URL: http://dx.doi.org/10.1016/j.optcom.2014.08.048

DOI: 10.1016/j.optcom.2014.08.048

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