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Effect of dehydration on the mechanical properties of sodium saccharin dihydrate probed with nanoindentation

Kiran, MSRN and Varughese, Sunil and Ramamurty, U and Desiraju, Gautam R (2012) Effect of dehydration on the mechanical properties of sodium saccharin dihydrate probed with nanoindentation. In: CrystEngComm, 14 (7). pp. 2489-2493.

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Abstract

Nanoindentation is used to explore the variation of mechanical properties associated with the dehydration process in sodium saccharin dihydrate. Upon indenting using a Berkovich tip, (011) and (101) faces exhibit explicit mechanical anisotropy that is consistent with the underlying crystal structure and intermolecular interactions. For freshly grown crystals, (011) is stiffer than (101) by 14%, while (101) is harder than (011) by 8%. Being a heavily hydrated system, the measured mechanical responses contain information pertinent to the fluidity associated with lattice water. Indentation on (011) with a sharp cube-corner tip induces a fluid flow; this observation is uncommon in molecular crystals. The crystals effloresce over a period of time with the generation of a more compact crystal structure and consequently increasing H and E.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Royal Society of Chemistry.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 02 Apr 2012 11:53
Last Modified: 02 Apr 2012 11:53
URI: http://eprints.iisc.ernet.in/id/eprint/44186

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