dc.contributor.author | Gholamimayani, Mahdieh | |
dc.contributor.author | Hussain, Nazabat | |
dc.contributor.author | Breiby, Dag Werner | |
dc.contributor.author | Akram, Muhammad Nadeem | |
dc.date.accessioned | 2023-02-13T08:22:12Z | |
dc.date.available | 2023-02-13T08:22:12Z | |
dc.date.created | 2022-09-21T12:35:19Z | |
dc.date.issued | 2022 | |
dc.identifier.citation | Electronics Letters. 2022, 58 (20), 762-764. | en_US |
dc.identifier.issn | 0013-5194 | |
dc.identifier.uri | https://hdl.handle.net/11250/3050240 | |
dc.description.abstract | Utilising angular-varied illumination in Fourier Ptychography, the resolution of optical microscopes can be increased and the phase of the sample can also be recovered while maintaining a wide field-of-view. In this work, an Fourier Ptychography microscopy imaging setup is demonstrated using a 10X 0.28 NA objective lens and a dome-shaped light-emitting diode array illuminator. By increasing the refractive index of the medium between the sample and light sources using oil filled dome, a synthetic system numerical aperture of 0.68 is achieved using only 37 light-emitting diodes. The measured resolution of 345 nm at a wavelength of 530 nm closely matches the theoretical prediction. Furthermore, the results of the oil-medium illumination are compared to free-space illumination. The oil immersion on the illumination side effectively enhances the illumination numerical aperture as compared to air and reduces the need for far off-axis light-emitting diodes. The result is high-resolution Fourier Ptychography imaging with relatively fewer light-emitting diodes providing both short capture and reconstruction times. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology. | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Improved resolution Fourier ptychography scheme using oil-filled dome-shaped LED array | en_US |
dc.title.alternative | Improved resolution Fourier ptychography scheme using oil-filled dome-shaped LED array | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.source.pagenumber | 762-764 | en_US |
dc.source.volume | 58 | en_US |
dc.source.journal | Electronics Letters | en_US |
dc.source.issue | 20 | en_US |
dc.identifier.doi | 10.1049/ell2.12596 | |
dc.identifier.cristin | 2053890 | |
dc.relation.project | Norges forskningsråd: 272248 | en_US |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |