Nano-printed miniature compound refractive lens for desktop hard x-ray microscopy
| Autor: | Alireza R. Panna, Eric E. Bennett, Alejandro Morales Martinez, Mona Mirzaeimoghri, Han Wen, Bertrand M. Lucotte, Don L. DeVoe |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
030103 biophysics Fluorescence-lifetime imaging microscopy Photon Materials science Scanning electron microscope lcsh:Medicine 02 engineering and technology Tungsten law.invention 03 medical and health sciences Optics law Microscopy Focal length lcsh:Science Lenses Multidisciplinary business.industry X-Rays Resolution (electron density) lcsh:R Equipment Design 021001 nanoscience & nanotechnology Laser Nanostructures Equipment Failure Analysis Radiography Lens (optics) Printing Three-Dimensional lcsh:Q 0210 nano-technology business |
| Zdroj: | PLoS ONE, Vol 13, Iss 8, p e0203319 (2018) |
| ISSN: | 1932-6203 |
| Popis: | Hard x-ray lenses are useful elements in x-ray microscopy and in creating focused illumination for analytical applications such as x-ray fluorescence imaging. Recently, polymer compound refractive lenses for focused illumination in the soft x-ray regime (< 10 keV) have been created with nano-printing. However, there are no such lenses yet for hard x-rays, particularly of short focal lengths for benchtop microscopy. We report the first instance of a nano-printed lens for hard x-ray microscopy, and evaluate its imaging performance. The lens consists of a spherically focusing compound refractive lens designed for 22 keV photon energy, with a tightly packed structure to provide a short total length of 1.8 mm and a focal length of 21.5 mm. The resulting lens technology was found to enable benchtop microscopy at 74x magnification and 1.1 μm de-magnified image pixel size at the object plane. It was used to image and evaluate the focal spots of tungsten-anode micro-focus x-ray sources. The overall system resolution with broadband illumination from a tungsten-anode x-ray tube at 30 kV and 10 mm focal distance was measured to be 2.30±0.22 μm. |
| Databáze: | OpenAIRE |
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