Studies on the Growth, Spectral, Optical and Thermal Properties of 4-Nitroaniline Picrate Single Crystals

Abstract

In this paper, an organic 4-nitroaniline picrate (4NP) single crystal was grown by solution growth method. Single crystal X-ray diffraction study revealed that grown crystal belongs to orthorhombic system with Pbcn space group. The solid state constants such as plasma energy, Penn gap, Fermi energy and polarizability of 4NP crystal were determined theoretically. The functional groups of the grown crystals were confirmed qualitatively from FTIR spectral analysis. The thermal decomposition and melting point of the crystal were determined from thermogravimetric analysis. The optical absorption and cut-off wavelength of the crystal were determined from UV-visible study. The second harmonic generation (SHG) efficiency of the grown crystal was measured by Kurtz–Perry SHG test using Nd : YAG laser. The laser damage threshold value of the grown crystal was estimated by multi-shot method using 1064 nm laser.

Tailored growth of in situAl4SiC4 in laser melted aluminum melt

“…[1][2][3][4][5] Selective Laser Melting (SLM), as a typical Additive Manufacturing (AM)/3D Printing (3DP) process, 6-10 has demonstrated a high potential in processing a wide range of high-performance materials including metals, alloys, ceramics and metal matrix composites (MMCs). 11,12 Due to the application of high-power laser beam, the maximum temperature of the present molten pool during SLM can reach 10 5 K speedily, followed by a superfast cooling Tailored growth of in situ Al 4 SiC 4 in laser melted aluminum melt clear.…”