Contact nucleation: in situ and ex situ observations of surface damaging

Heijden van der, A.E.D.M. and Elwenspoek, M.C. (1990) Contact nucleation: in situ and ex situ observations of surface damaging. Journal of Crystal Growth, 100 (3). pp. 1087-1091. ISSN 0022-0248

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Abstract:	To investigate the damaging done to a crystal surface potassium dihydrogen phosphate, KDP and potassium hydrogen phthalate, KAP) due to a crystal-rod contact, both ex situ and in situ experiments were performed and the impact sites studied either using an interference contrast microscope or a scanning electron microscope. An ex situ contact (performed in air) causes subsurface cracks and the breakage of small fragments (KDP) or the removal of thin plates (KAP) from the surface. In the former case the fragments have thicknesses roughly corresponding to the height of macrosteps present on the surface. Contacts during growth on KAP produced secondary nuclei; the crystal size distribution of these nuclei displays a log-normal behaviour.
Item Type:	Article
Copyright:	© 1990 Elsevier
Faculty:	Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:	Transducers Science and Technology (TST)
Link to this item:	http://purl.utwente.nl/publications/65134
Official URL:	http://dx.doi.org/10.1016/S0022-0248(08)80086-3
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