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Some micro‐disk patterns on calcite
Author(s) -
Desai C. C.
Publication year - 1980
Publication title -
kristall und technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0023-4753
DOI - 10.1002/crat.19800150217
Subject(s) - calcite , cleavage (geology) , materials science , etching (microfabrication) , crystal (programming language) , mineralogy , chemical engineering , chemistry , nanotechnology , composite material , computer science , layer (electronics) , fracture (geology) , engineering , programming language
Microdisk patterns have been produced on {100} cleavage faces of calcite crystals by etching them in a 5 p.c. citric acid solution at 80°C. It is observed that the disks are of different sizes and are distributed all over the face. The microtopography of the disks studied by interferometry has revealed that they are slight elevations on the surface. Various experiments have been performed on matched cleavage faces of calcite and it has been established that the formation of the microdisks is due to protective action of microbubbles formed on the crystal surface during the process of etching. The implications are discussed.