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Proceedings Paper

Composite spiral growth kinetics of calcite revealed by AFM
Author(s): Paul E. Hillner; Andrew J. Gratz; Paul K. Hansma
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Paper 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.

Paper Details

Date Published: 1 May 1992
PDF: 11 pages
Proc. SPIE 1639, Scanning Probe Microscopies, (1 May 1992); doi: 10.1117/12.58183
Show Author Affiliations
Paul E. Hillner, Univ. of California/Santa Barbara (United States)
Andrew J. Gratz, Lawrence Livermore National Lab. (United States)
Paul K. Hansma, Univ. of California/Santa Barbara (United States)

Published in SPIE Proceedings Vol. 1639:
Scanning Probe Microscopies
Srinivas Manne, Editor(s)

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