A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
3D Nanofabrication of High‐Resolution Multilayer Fresnel Zone Plates
Focusing X‐rays to single nanometer dimensions is impeded by the lack of high‐quality, high‐resolution optics. Challenges in fabricating high aspect ratio 3D nanostructures limit the quality and the resolution. Multilayer zone plates target this challenge by offering virtually unlimited and freely selectable aspect ratios. Here, a full‐ceramic zone plate is fabricated via atomic layer deposition of multilayers over optical quality glass fibers and subsequent focused ion beam slicing. The quality of the multilayers is confirmed up to an aspect ratio of 500 with zones as thin as 25 nm. Focusing performance of the fabricated zone plate is tested toward the high‐energy limit of a soft X‐ray scanning transmission microscope, achieving a 15 nm half‐pitch cut‐off resolution. Sources of adverse influences are identified, and effective routes for improving the zone plate performance are elaborated, paving a clear path toward using multilayer zone plates in high‐energy X‐ray microscopy. Finally, a new fabrication concept is introduced for making zone plates with precisely tilted zones, targeting even higher resolutions.
3D Nanofabrication of High‐Resolution Multilayer Fresnel Zone Plates
Focusing X‐rays to single nanometer dimensions is impeded by the lack of high‐quality, high‐resolution optics. Challenges in fabricating high aspect ratio 3D nanostructures limit the quality and the resolution. Multilayer zone plates target this challenge by offering virtually unlimited and freely selectable aspect ratios. Here, a full‐ceramic zone plate is fabricated via atomic layer deposition of multilayers over optical quality glass fibers and subsequent focused ion beam slicing. The quality of the multilayers is confirmed up to an aspect ratio of 500 with zones as thin as 25 nm. Focusing performance of the fabricated zone plate is tested toward the high‐energy limit of a soft X‐ray scanning transmission microscope, achieving a 15 nm half‐pitch cut‐off resolution. Sources of adverse influences are identified, and effective routes for improving the zone plate performance are elaborated, paving a clear path toward using multilayer zone plates in high‐energy X‐ray microscopy. Finally, a new fabrication concept is introduced for making zone plates with precisely tilted zones, targeting even higher resolutions.
3D Nanofabrication of High‐Resolution Multilayer Fresnel Zone Plates
Sanli, Umut Tunca (author) / Jiao, Chengge (author) / Baluktsian, Margarita (author) / Grévent, Corinne (author) / Hahn, Kersten (author) / Wang, Yi (author) / Srot, Vesna (author) / Richter, Gunther (author) / Bykova, Iuliia (author) / Weigand, Markus (author)
Advanced Science ; 5
2018-09-01
12 pages
Article (Journal)
Electronic Resource
English
| Wiley | 2018
Micro-Fresnel Zone Plates for Coded Imaging Applications
| NTIS | 1977
Hybrid High-Resolution Three-Dimensional Nanofabrication for Metamaterials and Nanoplasmonics
| British Library Online Contents | 2013
| British Library Online Contents | 2006
Fabrication of laser deposited high-quality multilayer zone plates for hard X-ray nanofocusing
| British Library Online Contents | 2014