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Interpretable and efficient contrast in scanning transmission electron microscopy with a diffraction grating beamsplitter
- Source :
- Phys. Rev. Applied 10, 061001 (2018)
- Publication Year :
- 2018
-
Abstract
- Efficient imaging of biomolecules, 2D materials and electromagnetic fields depends on retrieval of the phase of transmitted electrons. We demonstrate a method to measure phase in a scanning transmission electron microscope using a nanofabricated diffraction grating to produce multiple probe beams. The measured phase is more interpretable than phase-contrast scanning transmission electron microscopy techniques without an off-axis reference wave, and the resolution could surpass that of off-axis electron holography. We apply the technique to image nanoparticles, carbon sub- strates and electric fields. The contrast observed in experiments agrees well with contrast predicted in simulations.
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. Applied 10, 061001 (2018)
- Publication Type :
- Report
- Accession number :
- edsarx.1808.00370
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevApplied.10.061001