Phase imaging dislocations using diffracted beam interferometry

Microscopy ◽  
2020 ◽  
Author(s):  
Rodney Herring
Keyword(s):  
Phase Shift ◽  
Dislocation Core ◽  
Optic Axis ◽  
Imaging Method ◽  
Phase Imaging

Abstract A phase imaging method that measures the phase shift existing at a dislocation’s core is described. The method uses the interference of two symmetrically diffracted beams on the optic axis by means of an electron biprism. Each diffracted beam carries half the phase of the dislocation core. When combined, the entire phase shift of the dislocation core is obtained.

scholarly journals Computational Method for Wavefront Sensing Based on Transport-Of-Intensity Equation

Photonics ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 177
Author(s):  
Iliya Gritsenko ◽  
Michael Kovalev ◽  
George Krasin ◽  
Matvey Konoplyov ◽  
Nikita Stsepuro
Keyword(s):  
A Priori ◽  
Spherical Wave ◽  
Computational Method ◽  
Optical Systems ◽  
Radius Of Curvature ◽  
Imaging Method ◽  
Wavefront Sensing ◽  
Phase Imaging ◽  
Transport Of Intensity Equation ◽  
Priori Information

Recently the transport-of-intensity equation as a phase imaging method turned out as an effective microscopy method that does not require the use of high-resolution optical systems and a priori information about the object. In this paper we propose a mathematical model that adapts the transport-of-intensity equation for the purpose of wavefront sensing of the given light wave. The analysis of the influence of the longitudinal displacement z and the step between intensity distributions measurements on the error in determining the wavefront radius of curvature of a spherical wave is carried out. The proposed method is compared with the traditional Shack–Hartmann method and the method based on computer-generated Fourier holograms. Numerical simulation showed that the proposed method allows measurement of the wavefront radius of curvature with radius of 40 mm and with accuracy of ~200 μm.

Analysis of edge effects in attenuating phase-shift masks using quantitative phase imaging

2013 ◽  
Author(s):  
Aamod Shanker ◽  
Martin Sczyrba ◽  
Brid Connolly ◽  
Andy Neureuther ◽  
Laura Waller
Keyword(s):  
Phase Shift ◽  
Edge Effects ◽  
Phase Imaging ◽  
Quantitative Phase Imaging ◽  
Quantitative Phase

NEW POSSIBILITIES OF STRUCTURAL MORPHOLOGICAL PECULIARITIES INVESTIGATION BY QUANTITATIVE PHASE IMAGING METHOD

2020 ◽  
pp. 133-135
Author(s):  
M. Zolotova ◽  
M. Ivashchenko ◽  
P. Ignatiev ◽  
V. Metelin ◽  
M. Talamanova
Keyword(s):  
Red Blood Cells ◽  
Blood Cells ◽  
Stress Conditions ◽  
Imaging Method ◽  
Phase Imaging ◽  
Quantitative Phase Imaging ◽  
Quantitative Phase ◽  
Stress Influence

The possibility of quantitative phase imaging method for the assessment of structural morphological erythrocytes peculiarities under normal and stress conditions were studied. It is stated that quantitative phase imaging is an important instrument which allows to visualize red blood cells. New aspects of stress influence on functional cells morphology are defined.

scholarly journals Dislocation Core Phase Imaging by DBI

2019 ◽  
Vol 25 (S2) ◽  
pp. 104-105 ◽  
Author(s):  
Silvia Penkova ◽  
Rodney A. Herring
Keyword(s):  
Dislocation Core ◽  
Phase Imaging ◽  
Core Phase

scholarly journals Recent Progress in X-ray and Neutron Phase Imaging with Gratings

2020 ◽  
Vol 4 (1) ◽  
pp. 9 ◽  
Author(s):  
Atsushi Momose ◽  
Hidekazu Takano ◽  
Yanlin Wu ◽  
Koh Hashimoto ◽  
Tetsuo Samoto ◽  
...  
Keyword(s):  
Recent Progress ◽  
Time Of Flight ◽  
Imaging Method ◽  
Phase Imaging ◽  
Imaging Methods ◽  
X Ray ◽  
Phase Microscopy ◽  
Grating Fabrication ◽  
Recent Developments ◽  
Time Of Flight Method

Under the JST-ERATO project in progress to develop X-ray and neutron phase-imaging methods together, recent achievements have been selected and reviewed after describing the merit and the principle of the phase imaging method. For X-ray phase imaging, recent developments of four-dimensional phase tomography and phase microscopy at SPring-8, Japan are mainly presented. For neutron phase imaging, an approach in combination with the time-of-flight method developed at J-PARC, Japan is described with the description of new Gd grating fabrication.

Measurements of 2-Dimensional Plasma Density Distributions by the Phase-Imaging Method in GAMMA 10

2007 ◽  
Vol 51 (2T) ◽  
pp. 277-279 ◽  
Author(s):  
A. Nakahara ◽  
M. Yoshikawa ◽  
Y. Shima ◽  
T. Matsumoto ◽  
A. Nakahara ◽  
...  
Keyword(s):  
Plasma Density ◽  
Imaging Method ◽  
Phase Imaging ◽  
Density Distributions

Two dimensional density and its fluctuation measurements by using phase imaging method in GAMMA 10

2010 ◽  
Vol 81 (10) ◽  
pp. 10D514 ◽  
Author(s):  
M. Yoshikawa ◽  
S. Negishi ◽  
Y. Shima ◽  
H. Hojo ◽  
A. Mase ◽  
...  
Keyword(s):  
Imaging Method ◽  
Phase Imaging ◽  
Two Dimensional

Quantitative Phase-shifting Zernike Phase Imaging Method for Accurate Object Reconstruction

2019 ◽  
Author(s):  
Jianhui Huang ◽  
Huiliang Jin ◽  
Qian Ye ◽  
Guoxiang Meng
Keyword(s):  
Phase Shifting ◽  
Imaging Method ◽  
Phase Imaging ◽  
Object Reconstruction ◽  
Quantitative Phase

scholarly journals A lateral super-resolution imaging method using structured illumination without phase shift

2019 ◽  
Vol 2 (3) ◽  
pp. 130-137
Author(s):  
Yuan Jia ◽  
Junsheng Lu ◽  
Xinyu Chang ◽  
Xiaodong Hu
Keyword(s):  
Phase Shift ◽  
Super Resolution ◽  
Imaging Method ◽  
Structured Illumination ◽  
Resolution Imaging
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