Author
Sudeshna Mukerji
Other affiliations: Technion – Israel Institute of Technology
Bio: Sudeshna Mukerji is an academic researcher from Indian Association for the Cultivation of Science. The author has contributed to research in topics: Infrared spectroscopy & Hydrobromide. The author has an hindex of 8, co-authored 8 publications receiving 258 citations. Previous affiliations of Sudeshna Mukerji include Technion – Israel Institute of Technology.
Papers
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TL;DR: In this article, the microhardness of Larginine hydrobromide monohydrate (LAHBr) has been investigated and the work hardening index n for the three planes is greater than 1.6 which indicates that LAHBr is a soft crystal.
Abstract: Vicker's microhardness study of (100), (010) and (001) faces of a non-linear optical crystal, L-arginine hydrobromide monohydrate (LAHBr)have been reported.(100) plane is found to be the weakest plane. It has been observed that the microhardness decreases with increasing load for the three crystal planes. The microhardness behaviour have been explained successfully with the help of the PSR model proposed by Li and Bradt. Work hardening index n for the three planes are found to be greater than 1.6 which indicates that LAHBr is a soft crystal.
74 citations
TL;DR: In this article, it was found that FeCl 3 added to propionic acid reduces the tangential etch rate of (1 − 0 − 0) and (0 − 0 - 1) surfaces.
50 citations
TL;DR: In this paper, single crystals of l -arginine hydrochloride monohydrate (LAHCl) were successfully grown at ambient temperature (28.5°C) from its aqueous solution (pH=5.4) by slow evaporation as well as by slow cooling methods.
38 citations
TL;DR: In this article, a new semiorganic material for nonlinear optical devices, arginine hydrobromide monohydrate (LAHBr), was found to be a new semi-orthogravimetric material for optical devices.
37 citations
TL;DR: In this paper, chemical etchants based on simple alcohols were successfully applied for the first time to reveal dislocation sites on the polished {1, 0, 0}, {0, 1, 0} faces of L-arginine hydrobromide monohydrate.
24 citations
Cited by
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TL;DR: By exploring the interesting formation and phase‐transition phenomena of soft crystals through interdisciplinary collaboration, new materials having both the characteristics of ordered hard crystals and those of flexible soft matter are expected.
Abstract: A new material concept of soft crystals is proposed. Soft crystals respond to gentle stimuli such as vapor exposure and rubbing but maintain their structural order and exhibit remarkable visual changes in their shape, color, and luminescence. Various interesting examples of soft crystals are introduced in the article. By exploring the interesting formation and phase-transition phenomena of soft crystals through interdisciplinary collaboration, new materials having both the characteristics of ordered hard crystals and those of flexible soft matter are expected.
186 citations
TL;DR: In this article, the authors reviewed the relationship between applied indentation test load P and indentation diagonal length d to analyze the experimentally observed normal and reverse indentation size effect (ISE) in brittle compounds.
Abstract: Indentation size effect, indentation cracks and microhardness measurement of some brittle crystals are reviewed against the background of the existing concepts of indentation deformation of crystalline solids. Several approaches reported in the literature devoted to relationships between applied indentation test load P and indentation diagonal length d are applied to analyze the experimentally observed normal and reverse indentation size effect (ISE) in brittle compounds. Using typical examples of normal and reverse ISE it is shown that the indentation induced cracking model does not give load-independent hardness and the final expression describing the experimental data for various compounds is essentially another form of the Meyer law. Analysis of experiment data on crack lengths and indentation diagonals for different indentation loads suggests that the origin of ISE is associated with the processes of formation of indentation cracks following the general concepts of fracture mechanics. The load-independent hardness H0 may be determined reliably from plots of P /d against d of the proportional resistance model or of HV against 1/d as predicted by strain gradient plasticity theories. It was found that the load-independent hardness of depends on crystal orientation and state of the indented surface. Finally, some comments on determination of fracture toughness and brittle index of crystals are made. (© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
119 citations
TL;DR: In this article, Larginine hydrochloride (LAHCl) crystals were grown using water and ethanol+water mixture as solvent and the grown crystals were subjected to powder X-ray diffraction studies.
97 citations
TL;DR: In this paper, a single crystal of triphenylphosphine oxide 4-nitrophenol (TP4N) was grown by slow evaporation solution technique (SEST) at room temperature.
75 citations
TL;DR: In this article, the microhardness of Larginine hydrobromide monohydrate (LAHBr) has been investigated and the work hardening index n for the three planes is greater than 1.6 which indicates that LAHBr is a soft crystal.
Abstract: Vicker's microhardness study of (100), (010) and (001) faces of a non-linear optical crystal, L-arginine hydrobromide monohydrate (LAHBr)have been reported.(100) plane is found to be the weakest plane. It has been observed that the microhardness decreases with increasing load for the three crystal planes. The microhardness behaviour have been explained successfully with the help of the PSR model proposed by Li and Bradt. Work hardening index n for the three planes are found to be greater than 1.6 which indicates that LAHBr is a soft crystal.
74 citations