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Results: 4

1.
FIG. 3

FIG. 3. From: Quantitative Phase Imaging with a Scanning Transmission X-Ray Microscope.

Reconstructed thickness of the polystyrene spheres with contours shown at 1 μm intervals. The unevenness of the contours is due to the residual solution. The thickness of the spheres can be determined despite the presence of this solution, and without detailed knowledge of its refractive index.

M. D. de Jonge, et al. Phys Rev Lett. ;100(16):163902-163902.
2.
FIG. 2

FIG. 2. From: Quantitative Phase Imaging with a Scanning Transmission X-Ray Microscope.

Horizontal component of the DPC signal Sx obtained from a cluster of 5-μm-diameter polystyrene spheres. The step within the spheres is due to the presence of residual solution. Inset: absorption contrast image obtained from the sum of all detector segments. The peak specimen absorption is about 7%. The scan was recorded in 401 by 301 steps of 75 nm using a 5-ms dwell.

M. D. de Jonge, et al. Phys Rev Lett. ;100(16):163902-163902.
3.
FIG. 1

FIG. 1. From: Quantitative Phase Imaging with a Scanning Transmission X-Ray Microscope.

Schematic of the optical elements used in a STXM equipped with an annular quadrant detector (AQD). The central stop (CS) and order-sorting aperture (OSA) block essentially all x-rays except those focused in the first diffraction order of the objective, a zone plate (ZP) lens. The specimen is scanned in the focal plane. The measured intensities can be used to determine the absorption and deflection of the beam imparted by the specimen.

M. D. de Jonge, et al. Phys Rev Lett. ;100(16):163902-163902.
4.
FIG. 4

FIG. 4. From: Quantitative Phase Imaging with a Scanning Transmission X-Ray Microscope.

Profile along the line through the rightmost sphere of Fig. 3. Points indicate the reconstructed thickness; the line indicates the thickness profile calculated for a 5-μm sphere. A sinusoidal background was added to the calculated values to model the observed background variations. The measurements are in excellent agreement with the expected values. The residual fluid is clearly seen as a deviation from the spherical profile (arrows). At the center of the sphere the thickness of the fluid is zero, and so we can determine the thickness of the sphere without assuming the properties of the fluid.

M. D. de Jonge, et al. Phys Rev Lett. ;100(16):163902-163902.

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