Composite spiral growth kinetics of calcite revealed by AFM

Paul E. Hillner; Andrew J. Gratz; Paul K. Hansma

doi:10.1117/12.58183

1 May 1992 Composite spiral growth kinetics of calcite revealed by AFM

Paul E. Hillner, Andrew J. Gratz, Paul K. Hansma

Proceedings Volume 1639, Scanning Probe Microscopies; (1992) https://doi.org/10.1117/12.58183
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

Abstract

In situ growth of CaCO₃ on a cleaved (1014) calcite surface from aqueous solution is observed with an atomic force microscope. Growth layers form by the nucleation of steps at spiral sources centered on screw dislocations. The kinetics of simple (isolated) and composite (clustered) spiral sources and the development of spiral plateaus, growth-induced domain walls, and interdomain budding sites are described. Single and double-armed spirals, counterclockwise and clockwise spirals, and hollow-cored and uncored spirals are exhibited. Spiral arms rotate faster along the long rhomb diagonal, thereby pairing the steps emitted from double-armed spirals. Clustered spirals interact in ways which can increase their step nucleation rates above those of isolated spirals.

Citation Download Citation

Paul E. Hillner, Andrew J. Gratz, and Paul K. Hansma "Composite spiral growth kinetics of calcite revealed by AFM", Proc. SPIE 1639, Scanning Probe Microscopies, (1 May 1992); https://doi.org/10.1117/12.58183

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