Ultra-high voltage electron microscopy

The Critical Voltage Effect in High-Voltage Electron' Microscopy

Ultra-high voltage electron microscopy of primitive algae illuminates 3D ultrastructures of the first photosynthetic eukaryote

A heterotrophic organism 1-2 billion years ago enslaved a cyanobacterium to become the first photosynthetic eukaryote, and has diverged globally. The primary phototrophs, glaucophytes, are thought to retain ancestral features of the first photosynthetic eukaryote, but examining the protoplast ultrastructure has previously been problematic in the coccoid glaucophyte Glaucocystis due to its thick...

Ultra-high resolution scanning electron microscopy of biological materials.

In recent years, several ultrahigh resolution scanning electron microscopes (SEM) were successively developed. They were all equipped with a field emission electron gun and an objective lens with a short focal length, and showed a resolution better than 1 nm. With such instrument, not only intracellular structures but also virus, bacteriophages, and biological macromolecules were clearly observ...

High-voltage electron microscopy of normal human cornea.

Conventional transmission electron microscopy (CTEM) was compared with high-voltage electron microscopy (HVEM) on 11 normal human corneas (age range, 30 weeks of gestation to 92 yr). Epithelial anchoring fibrils were noted between the basal epithelial cells and Bowman's layer (BL) as previously reported. Parallel pairs of fibers, 27.5 nm in diameter, were observed crossing into the anterior str...

Ultra-high-voltage switchgear to power China