bct-Carbon

Body-centered tetragonal carbon (bct-carbon) is a very hard material produced from graphite under high pressure at room temperature. Looking perpendicular to the slices [100] and [001], its structure looks hexagonal; from the slice [010] it appears to be built from small squares. In this Demonstration you can vary several parameters of the 3D atomic structure.

SNAPSHOTS

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DETAILS

Bonds
The chemical bonds of the squares of carbon atoms are colored red; the chemical bonds between squares of different layers are colored green.
Viewpoints
Try the various viewpoints from the drop-down menu or drag to rotate the crystal.
Slice
The "slice" setter bar lets you restrict the atoms displayed to one of three slices of the crystal.
Show
The "show" setter bar lets you make the atoms or links invisible.
Atom size
Use this slider to change the size of the black carbon atoms.
Atom opacity
Use this slider to make the atoms transparent.
Line thickness
Use this slider to change the thickness of the chemical bonds.
Line opacity
Use this slider to make the bonds transparent.
Square size
Use this slider to change the size of the carbon squares.
Square distance
Use this slider to set the distance between the centers of two neighboring carbon squares.
Distance between square layers
Use this slider to change the distance between adjacent layers of carbon squares.
Reset
Click this checkbox to reset the crystal parameters to their default value.
Floor
Click this checkbox to switch the "floor" display on and off.
Axes
Click this checkbox to display coordinate axes.
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