X-ray computed microtomography of sea ice

MINERAL PHASE MICROSTRUCTURE IN TEETH OF THE SHORT SPINED SEA URCHIN (Lytechinus variegatus) STUDIED WITH X-RAY PHASE CONTRAST IMAGING AND WITH ABSORPTION MICROTOMOGRAPHY, S.R. Stock, T. Dahl, J. Barss, A. Veiss, K. Fezzaa, W.K. Lee, pp. 133-138

X-ray absorption microtomography, a high resolution variant of medical “CT”, and synchrotron x-ray phase contrast imaging reveal the distribution of mineral within teeth of the sea urchin Lytechinus variegatus. Data from these imaging modalities on intact teeth are compared with histochemically stained thin sections observed with transmission optical microscopy. Because these teeth grow continu...

X-ray microtomography of materials

shapes. destructively and with spatial resolution which can approach that of optical microscopy (typically, no After presenting the author’s perspective of the better than 1 mm in samples whose cross-sectional development of microtomography, imaging, X-ray diameter is on the order of 1 mm, and 10 mm for attenuation, and the physical concepts underlying 10 mm specimens). First, X-ray computed to...

Formation of brine channels in sea ice.

Liquid salty micro-channels (brine) between growing ice platelets in sea ice are an important habitat for CO2-binding microalgaea with great impact on polar ecosystems. The structure formation of ice platelets is microscopically described and a phase field model is developed. The pattern formation during solidification of the two-dimensional interstitial liquid is considered by two coupled orde...

Experimental Investigation of Trapped Oil Clusters in a Water-Wet Bead Pack Using X-Ray Microtomography

Phase-contrast X-ray microtomography of mouse fetus

A phase-contrast X-ray microtomography system using the Talbot imaging has been built at the SPring-8 synchrotron radiation facility. This system has much higher density resolution than absorption-based X-ray microtomography. The tomographic sections of formalin-fixed mouse fetuses obtained with this method clearly depict various organs without any staining at a pixel resolution of up to 5 µm. ...