Directed nucleation and growth by balancing local supersaturation and substrate/nucleus lattice mismatch.

ABSTRACT: Controlling nucleation and growth is crucial in biological and artificial mineralization and self-assembly processes. The nucleation barrier is determined by the chemistry of the interfaces at which crystallization occurs and local supersaturation. Although chemically tailored substrates and lattice mismatches are routinely used to modify energy landscape at the substrate/nucleus interface and thereby steer heterogeneous nucleation, strategies to combine this with control over local supersaturations have remained virtually unexplored. Here we demonstrate simultaneous control over both parameters to direct the positioning and growth direction of mineralizing compounds on preselected polymorphic substrates. We exploit the polymorphic nature of calcium carbonate (CaCO₃) to locally

SUBMITTER: Li L 

PROVIDER: S-EPMC5889625 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature