Synthesis, growth, morphology and characterization of ferroelectric glycine phosphite single crystals

Abstract

Glycine phosphite (NH 3 CH 2 COO.H 3 PO 3 ), a potential ferroelectric material, was grown as single crystals from aqueous solutions by slow evaporation and slow cooling methods. Laboratory synthesized title compound was purified by recrystallization method and confirmed by Fourier transform infrared and Laser Raman studies. Temperature dependent solubility in double distilled water in the range between 288 and 328 K was determined by gravimetric method. Morphological importance of various growth faces were studied by optical goniometry. Powder x-ray diffraction study performed on the grown crystals confirms the crystal system and lattice parameters of the unit cell. Optical transparency of the grown crystals in the ultraviolet -visible -near infrared region was studied by spectroscopic method. Thermal stability of the grown crystals in the temperature region above ambient until melting was studied using differential scanning calorimetry.

Hyperspectral detection of walnut protein contents based on improved whale optimized algorithm

“…Besides, it should be noted that, the shape information, which is unique to hyperspectral information is also considered in this study to fully mine the NIR spectral characteristics. Most selected wavelengths using this proposed method were correlated with protein contents in walnut kernels mechanistically and supported by the previous studies [32,[34][35][36][37] . This proposed method could be also applied to other areas.…”

“…The optical transmittance spectrum recorded for the grown glycine phosphite single crystal shows an absorption edge at 1377 nm in the upper wavelength region. Hence it is clear that the grown glycine phosphite crystal has a transmittance window at 1377 nm with nearly about 100% transparency [35] . Yadav et al [36] utilize this tapered fiber optic biosensor, operating at 1550 nm, for the detection of protein concentration.…”

Separation and nucleation kinetics of l-menthol polymorph through a swift cooling crystallization process

“…6. The interfacial energy can be calculated using experimentally determined values of induction time based on nucleation theory, 27,[31][32][33][34][35][36][37][38][39]…”