Table-Top Water-Window Microscope Using a Capillary Discharge Plasma Source with Spatial Resolution 75 nm
| Autor: | Alexandr Jancarek, Tomáš Parkman, Michal Nevrkla, Dalibor Pánek, Miroslava Vrbová, Jana Turňová |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
SXR microscopy
Materials science Microscope Condenser (optics) 02 engineering and technology Zone plate water window lcsh:Technology 01 natural sciences law.invention lcsh:Chemistry 010309 optics Fresnel zone plate Optics law 0103 physical sciences discharge source General Materials Science lcsh:QH301-705.5 Instrumentation Image resolution Fluid Flow and Transfer Processes Water window lcsh:T business.industry Process Chemistry and Technology Resolution (electron density) General Engineering imaging 021001 nanoscience & nanotechnology Laser lcsh:QC1-999 Computer Science Applications Wavelength lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 Z-pinch lcsh:Engineering (General). Civil engineering (General) 0210 nano-technology business lcsh:Physics |
| Zdroj: | Applied Sciences Volume 10 Issue 18 Applied Sciences, Vol 10, Iss 6373, p 6373 (2020) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app10186373 |
| Popis: | We present a design of a compact transmission water-window microscope based on the Z-pinching capillary discharge nitrogen plasma source. The microscope operates at wavelength of 2.88 nm (430 eV), and with its table-top dimensions provides an alternative to large-scale soft X-ray (SXR) microscope systems based on synchrotrons and free-electron lasers. The emitted soft X-ray radiation is filtered by a titanium foil and focused by an ellipsoidal condenser mirror into the sample plane. A Fresnel zone plate was used to create a transmission image of the sample onto a charge-coupled device (CCD) camera. To assess the resolution of the microscope, we imaged a standard sample-copper mesh. The spatial resolution of the microscope is 75 nm at half-pitch, calculated via a 10&ndash 90% intensity knife-edge test. The applicability of the microscope is demonstrated by the imaging of green algae-Desmodesmus communis. This paper describes the principle of capillary discharge source, design of the microscope, and experimental imaging results of Cu mesh and biological sample. |
| Databáze: | OpenAIRE |
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