منابع مشابه
Investigation of individual micrometer-size Kosa particle with on-site combination of electron microscope and synchrotron X-ray microscope.
The Kosa (yellow sand) aerosol affects the global environment as well as human health because it migrates from the interior of China to other areas, absorbing various atmospheric elements. Investigation into individual Kosa aerosol particles, which are submicroscopic to several tens of micrometers in diameter, is required to resolving the issue. We installed a scanning electron microscope (SEM)...
متن کامل3-D Imaging Tomography with Sub-micrometer Resolution Using Fresnel Zone Plate Optics
X-ray microtomography has been developed for use in various fields such as biology, materials science, petrology, and medical diagnosis. This method’s setup commonly consists of a simple projection geometry with a high-resolution imaging detector and a highly collimated beam, e .g . , a microfocussing X-ray tube or synchrotron radiation source, which can result in a spatial resolution of about ...
متن کاملEffect of a physical phase plate on contrast transfer in an aberration-corrected transmission electron microscope.
In this theoretical study we analyze contrast transfer of weak-phase objects in a transmission electron microscope, which is equipped with an aberration corrector (C(s)-corrector) in the imaging lens system and a physical phase plate in the back focal plane of the objective lens. For a phase shift of pi/2 between scattered and unscattered electrons induced by a physical phase plate, the sine-ty...
متن کاملDesign of an electron microscope phase plate using a focused continuous-wave laser.
We propose a Zernike phase contrast electron microscope that uses an intense laser focus to convert a phase image into a visible image. We present the relativistic quantum theory of the phase shift caused by the laser-electron interaction, study resonant cavities for enhancing the laser intensity and discuss applications in biology, soft-materials science and atomic and molecular physics.
متن کاملFluorescence microscopy imaging with a Fresnel zone plate array based optofluidic microscope.
We report the implementation of an on-chip microscope system, termed fluorescence optofluidic microscope (FOFM), which is capable of fluorescence microscopy imaging of samples in fluid media. The FOFM employs an array of Fresnel zone plates (FZP) to generate an array of focused light spots within a microfluidic channel. As a sample flows through the channel and across the array of focused light...
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ژورنال
عنوان ژورنال: Physical Review (Series I)
سال: 1911
ISSN: 1536-6065
DOI: 10.1103/physrevseriesi.32.530