Unidirectional growth of largest L-LMHCl dihydrate crystal by SR method

Unidirectional growth of l-asparagine monohydrate single crystal: First time observation of NLO nature and other studies of crystalline perfection, optical, mechanical and dielectric properties

“…For device fabrication, size along a desired direction is another important parameter as the devices in general need bigger size crystals or fabricate many numbers in an economical way. The recently invented Sankaranarayanan-Ramasamy (SR) method [13], which has been successfully adopted to grow large size single crystals of several important substances like potassium dihydrogen orthophosphate (KDP), L-lysine monohydrochloride dihydrate (L-LMHCl), tetra glycine barium chloride (TGBC), bis(thiourea) zinc(II) chloride (BTZC), hippuric acid and potassium acid phthalate (KAP) [14][15][16][17][18][19], gives an amicable solution to grow single crystals with the desired size along the desired direction in an economical way.…”

Synthesis, Crystal Structure and Vibrational Spectral Analysis of Guanidinium Hydrogen L-aspartate Single Crystal

“…Crystals of all amino acids except glycine, owing to the presence of chiral carbon atom and non-centrosymmetry, serve as candidate for non-linear optical (NLO) materials, 1 widely used in SHG and ultimately in generating blue green lasers. 2 Our recent research work is mostly centred around NLO materials, which are amino acid derivatives obtained from glycine, L-proline, etc.…”

“…[13][14][15][16] Guanidinium hydrogen L-aspartate (GULAS) is one which consists of guanidinium and aspartate ions, connected by strong N-H…O hydrogen bonds. It crystallises in the orthorohmbic structure having four molecules per unit cell, with a noncentrosymmetric space group P2 1 2 1 2 1 . Though Krumbe and Haussühl have reported the detailed structural and physical properties of GULAS, the spectral analysis has not been reported in open literature.…”

Unidirectional growth of organic nonlinear optical l-arginine maleate dihydrate single crystal by Sankaranarayanan–Ramasamy (SR) method and its characterization

“…For example the conversion efficiency of SHG is always high along the phase matching direction for nonlinear optical crystals. From this point of view, the Sankaranarayanan-Ramasamy (SR) method is a capable method to grow bulk single crystal along a specific orientation [6][7][8][9][10][11]. The unidirectional crystal growth method is most suitable for the crystal growth along particular direction.…”