Phase contrast soft x-ray microscopy using Zernike zone plates
| Autor: | Anne E. Sakdinawat, Yanwei Liu |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Physics
Fresnel zone business.industry Zernike polynomials media_common.quotation_subject Phase-contrast imaging X-ray optics Spectrometry X-Ray Emission Equipment Design Zone plate Image Enhancement Atomic and Molecular Physics and Optics law.invention Equipment Failure Analysis symbols.namesake Wavelength Refractometry Optics Cardinal point law symbols Contrast (vision) Microscopy Phase-Contrast business media_common |
| Zdroj: | Optics express. 16(3) |
| ISSN: | 1094-4087 |
| Popis: | Soft x-ray Zernike phase contrast microscopy was implemented using a "Zernike zone plate" (ZZP) without the use of a separate phase filter in the back focal plane. The ZZP is a single optic that integrates the appropriate +/-pi/2 radians phase shift through selective zone placement shifts in a Fresnel zone plate. Imaging using a regular zone plate, positive ZZP, and negative ZZP was performed at a wavelength of lambda = 2.163 nm. Contrast enhancement with the positive ZZP and contrast reversal with the negative ZZP were observed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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