期刊
SOFT MATTER
卷 6, 期 24, 页码 6130-6135出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0sm00484g
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资金
- NSF [DMR-0427239, CNS-0959856]
We examine the crystallization dynamics of nanoparticles reversibly tethered by DNA hybridization. We show that the crystallization happens readily only in a narrow temperature slot, and always proceeds via a two-step process, mediated by a highly-connected amorphous intermediate. For lower temperature quenches, the dynamics of unzipping strands in the amorphous state is sufficiently slow that crystallization is kinetically hindered. This accounts for the well-documented difficulty of forming crystals in these systems. The strong parallel to the crystallization behavior of proteins and colloids suggests that these disparate systems crystallize in an apparently universal manner.
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