Oftentimes, phase condensers include a darkfield stop; make sure your's doesn't. Since you have phase microscopes, that's about as good as darkfield for what you want.

Phase contrast microscopy showing that Hfx. Volcanii rod-shaped cells can swim while disk-shaped cells cannot. Credit (Video: Courtesy of Zach Curtis of Brandeis University) ...

Biologists are very interested in how proteins, lipids and other compounds are organized and interact in systems. Very few ...

Until today, skin, brain, and all tissues of the human body were difficult to observe in detail with an optical microscope, since the contrast in the image was hindered by the high density of their ...

The phase-contrast technique is a way of getting more information out of each X-ray beam. That's because it's possible to measure differences in the waveforms of X-rays that pass through a sample.

A new publication from Opto-Electronic Advances; DOI 10.29026/oea.2024.240060, discusses multi-prior intelligent microscopy assisted high-throughput, pixel super-resolution quantitative phase imaging.

Small-airway obstruction, which cannot be seen with conventional X-rays, was observed in a virtual chest X-ray enhanced by phase-contrast imaging, according to study results published in ...