A cross-section of pine stem has several concentric rings with distinct borders between each ring. The center of the stem is called pith. The many holes allow water to be carried throughout the plant.
Scanning transmission electron microscopy, or STEM, is a powerful imaging technique that enables researchers to study a material’s morphology, composition, and bonding behavior at the angstrom scale.
A comparison of experimental annular dark field (ADF)-scanning transmission electron microscopy (STEM) and electron ptychography in uncorrected and aberration-corrected electron microscopes. In the ...
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