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spontaneously in a supercooled liquid. Keys and Glotzer report that a quasicrystal
 

Summary: spontaneously in a supercooled liquid.
Keys and Glotzer report that a quasicrystal
nucleus grows by incorporating ready-
formed clusters of atoms with icosahedral
shapes, which have five- and twelvefold
symmetries and cannot themselves
grow indefinitely. This creates packing
mismatches. Reorganizing the atoms
in the enlarging nucleus to correct for
the mismatches is a slow process, and
quasicrystal growth outpaces it, preventing
the formation of a regularly ordered crystal.
CHEMICAL BIOLOGY
Platinumresult
Nature Chem. Biol. doi:10.1038/nchembio.2007.58
(2007)
Common chemotherapy drugs based on
platinum, such as cisplatin and oxaliplatin,
target different combinations of DNA
sequences when that DNA is bound to

  

Source: Amaral, Luis A.N. - Department of Chemical and Biological Engineering, Northwestern University

 

Collections: Physics; Biology and Medicine