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a "Full" Fresnel zone plate showing central rings in the middle of each... | Download Scientific Diagram
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AFM images of Fresnel rings etched at 150 W RF power and the process... | Download Scientific Diagram
a) A Fresnel lens assembled from concentric rings of microwires with... | Download Scientific Diagram
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![Micromachines | Free Full-Text | An Annular Fresnel Zone Plate without Central Spots Fabricated by Femtosecond Laser Direct Writing Micromachines | Free Full-Text | An Annular Fresnel Zone Plate without Central Spots Fabricated by Femtosecond Laser Direct Writing](https://www.mdpi.com/micromachines/micromachines-13-01285/article_deploy/html/images/micromachines-13-01285-g009.png)