Non-contact optical super-resolution imaging study based on height-variable microsphere

Meng, Kai; Gao, Shilin; Yang, Zhan; Liu, Huicong; Chen, Tao; Sun, Lining

doi:10.1088/1742-6596/1074/1/012097

Cited by 2 publications

(1 citation statement)

References 12 publications

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“…More systematic studies as well as the applications of microsphere-based (or the derivatives of microspheres such as liquid droplets and microbers) imaging can be found extensively in the mainstream optics and photonics journals. 48,[180][181][182][183][184][185][186][187][188] Different than other super-resolution imaging techniques like hyperlens and superlens, [189][190][191] super-oscillation lens, 17,[192][193][194] and uorescence-based modalities, 195,196 the underlying physics of imaging beyond the Rayleigh limit via dielectric microspheres has not been completely revealed yet, although there was a study that claimed that it is due to the FWHM of PNJs. 31 Maslov et al investigated the theoretical limits of resolution available in microsphere-based nanoscopy using incoherent point emitters in the air.…”

Section: Deep-subwavelength Fwhm and Neareld Effect Of Pnjsmentioning

confidence: 99%

All-dielectric concentration of electromagnetic fields at the nanoscale: the role of photonic nanojets

Zhu

Goddard

2019

Nanoscale Adv.

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Section: Deep-subwavelength Fwhm and Neareld Effect Of Pnjsmentioning

confidence: 99%

All-dielectric concentration of electromagnetic fields at the nanoscale: the role of photonic nanojets

Zhu

Goddard

2019

Nanoscale Adv.

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Optical nano-imaging via microsphere compound lenses working in non-contact mode

Hong

2021

Opt. Express

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Microsphere lens for nano-imaging has been widely studied because of its superior resolving power, real-time imaging characteristic, and wide applicability on diverse samples. However, the further development of the microsphere microscope has been restricted by its limited magnification and small field-of-view. In this paper, the microsphere compound lenses (MCL) which allow enlarged magnification and field-of-view simultaneously in non-contact imaging mode have been demonstrated. A theoretical model involving wave-optics effects is established to guide the design of MCL for different magnifications and imaging configurations, which is more precise compared with common geometric optics theory. Experimentally, using MCL to image the specimen with a tunable magnification from 2.8× to 10.3× is realized. Due to the enlarged magnification, a high-resolution target with 137 nm line width can be resolved by a 10× objective. Besides, the field-of-view of MCL is larger than that of a single microsphere and can be further increased through scanning working manner, which has been demonstrated by imaging a sample with ∼76 nm minimum feature size in a large area. Prospectively, the well-designed MCL will become irreplaceable components to improve the imaging performances of microsphere microscope just like the compound lens in the conventional macroscopic imaging system.

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Non-contact optical super-resolution imaging study based on height-variable microsphere

Cited by 2 publications

References 12 publications

All-dielectric concentration of electromagnetic fields at the nanoscale: the role of photonic nanojets

All-dielectric concentration of electromagnetic fields at the nanoscale: the role of photonic nanojets

Optical nano-imaging via microsphere compound lenses working in non-contact mode

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