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Transport of intensity equation method and its applications
1Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki Tsukuba Ibaraki, 305-0044, Japan.
Microscopy (Oxford, England)
|February 1, 2021
Summary
Transport of Intensity Equation (TIE) phase retrieval offers a simple microscopy method using only three images. Careful attention to experimental conditions and algorithms is crucial to minimize artifacts in phase map reconstruction.
Area of Science:
- Microscopy
- Materials Science
- Optics
Background:
- Phase retrieval techniques are essential for reconstructing microscopic images.
- Transport of Intensity Equation (TIE) is a defocus series reconstruction method.
- TIE offers advantages like requiring no specialized devices and using only three images.
Purpose of the Study:
- To review the principle of the TIE method for phase retrieval.
- To discuss algorithms and boundary conditions for solving the TIE.
- To present application results of TIE in materials science.
Main Methods:
- Utilizing a defocus series of three images.
- Applying the Transport of Intensity Equation (TIE).
- Solving the TIE using various algorithms and boundary conditions.
Main Results:
- TIE enables observation of magnetic fields, domains, electrostatic potentials, and strains.
- Spherical aberration correction improves image resolution.
- Artifacts can appear in retrieved phase maps if experimental conditions or algorithms are not optimized.
Conclusions:
- TIE is a versatile and accessible phase retrieval technique in microscopy.
- Optimizing experimental parameters and TIE solving methods is key to accurate phase reconstruction.
- TIE has significant applications in materials science research.
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