Super-Resolution Imaging with Patchy Microspheres
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In: Photonics, Vol. 8, 513, 15.11.2021.
Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Super-Resolution Imaging with Patchy Microspheres
AU - Shang, Qingqing
AU - Tang, Fen
AU - Yu, Lingya
AU - Oubaha, Hamid
AU - Caina, Darwin
AU - Yang, Songlin
AU - Melinte, Sorin
AU - Zuo, Chao
AU - Wang, James
AU - Ye, Ran
PY - 2021/11/15
Y1 - 2021/11/15
N2 - The diffraction limit is a fundamental barrier in optical microscopy, which restricts the smallest resolvable feature size of a microscopic system. Microsphere-based microscopy has proven to be a promising tool for challenging the diffraction limit. Nevertheless, the microspheres have a lowimaging contrast in air, which hinders the application of this technique. In this work, we demonstratethat this challenge can be effectively overcome by using partially Ag-plated microspheres. The deposited Ag film acts as an aperture stop that blocks a portion of the incident beam, forming a photonic hook and an oblique near-field illumination. Such a photonic hook significantly enhanced the imaging contrast of the system, as experimentally verified by imaging the Blu-ray disc surface and colloidal particle arrays
AB - The diffraction limit is a fundamental barrier in optical microscopy, which restricts the smallest resolvable feature size of a microscopic system. Microsphere-based microscopy has proven to be a promising tool for challenging the diffraction limit. Nevertheless, the microspheres have a lowimaging contrast in air, which hinders the application of this technique. In this work, we demonstratethat this challenge can be effectively overcome by using partially Ag-plated microspheres. The deposited Ag film acts as an aperture stop that blocks a portion of the incident beam, forming a photonic hook and an oblique near-field illumination. Such a photonic hook significantly enhanced the imaging contrast of the system, as experimentally verified by imaging the Blu-ray disc surface and colloidal particle arrays
U2 - 10.3390/photonics8110513
DO - 10.3390/photonics8110513
M3 - Article
VL - 8
JO - Photonics
JF - Photonics
SN - 2304-6732
M1 - 513
ER -