Radial plot of x-ray diffraction patterns for a 2D block copolymer single crystal. The logarithm of intensity of the diffracted x-rays is indicated by the color bar, increasing from left to right.

From the article:

Single-Crystal Diffraction from Two-Dimensional Block Copolymer Arrays
G. E. Stein, E. J. Kramer, X. Li, and J. Wang
Phys. Rev. Lett. 98, 086101 (2007)

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