Applications of electron holography to materials science
Abstract
Experimental results on interference electron microscopy employing electron holography are presented. Electron holography is a two-step imaging method consisting of (1) the formation of an interference image in a field emission electron microscope by superimposing a reference electron wave on an object electron wave which is transmitted through a specimen and (2) the reconstruction of the optical image in an optical interferometer. It is noted that interference microscopy is particularly promising for practical measurements. The principles of the interference electron microscope, phase difference amplification, thickness measurement, magnetic-field measurement, and measurement of surface morphology are discussed.
- Publication:
-
Materials Transactions JIM
- Pub Date:
- July 1990
- Bibcode:
- 1990MatTr..31..551E
- Keywords:
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- Electron Microscopes;
- Holography;
- Image Processing;
- Materials Science;
- Image Reconstruction;
- Interference;
- Magnetic Fields;
- Instrumentation and Photography