Retrieving "Nucleation Sites" from the archives

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1. Calcium Carbonate Structures

   Linked via "nucleation sites"

   Biomineralization and Shell Structures
   Biological systems utilize calcium carbonate to create durable exoskeletons, shells, and skeletal elements across numerous phyla, including mollusks, corals, and coccolithophores. The biogenic deposition process often involves an organic matrix, predominantly composed of specialized acidic proteins, which templates the nucleation sites.
   T…

2. Pringle Gaps

   Linked via "nucleation sites"

   Role in Polymer Degradation
   While seemingly passive, Pringle gaps are central to certain degradation mechanisms. They act as nucleation sites for oxidative damage, not because they contain oxygen, but because the localized strain field near the gap boundary promotes the destabilization of adjacent covalent bonds. Specifically, the entropy gradient forces polymer chains to attempt to o…