Knoop microhardness anisotropy and Young’s modulus of l-arginine hydrochloride monohydrate and l-arginine hydrobromide monohydrate

Synthesis, growth, thermal, optical and mechanical properties of new organic NLO crystal: l-alanine dl-malic acid

“…From the graph it is obvious that H K decreases up to 50 g and then the crystal breaks. Young's modulus E of the crystal has been calculated using the relation E= 0.45H K / (0.1406 À(b/a)) [25]. Where 'a' and 'b' are the longer and shorter indentation diagonal lengths.…”

Growth and characterization of L-arginine acetate single crystals: a new NLO material

“…The refractive index and SHG measurement looked promising for L-arginine with acids like fluoride, chloride and acetate. A lot of work has been done on the earlier ones [4][5][6][7][8][9] but to the best knowledge of the author there is no report on the bulk crystal growth of this promising material, LAAC. In the present investigation a systematic study has been carried out on the growth of LAAC and the grown crystals have been subjected to various characterization studies.…”

Effect of magnetic field in the microhardness studies on calcium hydrogen phosphate crystals

“…From the plot, it was found that as the load increases the Knoop microhardness number also increases. From the Knoop microhardness measurements Young's modulus (E) of the crystal was calculated using the relation [7,18] …”