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In crystallography, interstitial sites, holes or voids are the empty space that exists between the packing of atoms (spheres) in the crystal structure. [ citation needed ] The holes are easy to see if you try to pack circles together; no matter how close you get them or how you arrange them, you will have empty space in between.
Interstitial atoms (blue) occupy some of the spaces within a lattice of larger atoms (red) In materials science, an interstitial defect is a type of point crystallographic defect where an atom of the same or of a different type, occupies an interstitial site in the crystal structure.
There are two types of interstitial holes left by hcp and fcc conformations; tetrahedral and octahedral void. Four spheres surround the tetrahedral hole with three spheres being in one layer and one sphere from the next layer.
Interstitial fauna, small aquatic invertebrates, larger than microfauna but smaller than macrofauna Interstitial fluid , a solution that bathes and surrounds the cells of multicellular animals Interstitial deletion and duplication in genetics, see Deletion (genetics) § Types and Gene duplication
When the smaller sphere has a radius greater than 0.41421 of the radius of the larger sphere, it is no longer possible to fit into even the octahedral holes of the close-packed structure. Thus, beyond this point, either the host structure must expand to accommodate the interstitials (which compromises the overall density), or rearrange into a ...
These holes have been previously reported from the region, but their origin remains a mystery,” NOAA Ocean Exploration reported. “While they look almost human made, the little piles of ...
But, according to a few theorists, these two holes aren't so much for aesthetic purposes as they are for functionality. Some say the holes allow your feet to breathe easier. Walking and other ...
When it dissolves in iron, carbon atoms occupy interstitial "holes". Being about twice the diameter of the tetrahedral hole, the carbon introduces a strong local strain field. Mild steel (carbon steel with up to about 0.2 wt% C) consists mostly of α-Fe and increasing amounts of cementite (Fe 3 C, an iron carbide).