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General description of III-Arsenide semiconductors is presented and significance of the present work is stressed. The electrical and optical properties of III-Arsenide from binary semiconductors are evaluated using the principle of additivity involving quadratic expressions. The electrical and optical properties studied in this group include refractive index, optical polarizability, absorption coefficient and energy gap. A comparison of these data is made with reported data wherever available. The significance of the present method developed from refractive indices with out need for sophisticated experimental methods is stressed. The advantage of this group alloys is also outlined.

Phosphides of group III have generated important applications in optoelectronic devices. Principally InxGa1-xP is a novel alloy for the development of solid-state lighting and photovoltaic systems, since it is possible to control its band gap from 2.26 eV to 1.27 eV by simply varying the indium concentration. However during the growth of InxGa1-xP inherent defects are obtained in the material, degrading its optical properties. In this work, the effect of the indium concentration is studied. The results of the optical and structural characterization of a series of InxGa1-xP films (0 < x < 0.3) deposited by chemical vapor deposition (CVD) are reported.

Hydrogels, films, micro/nanofibers, and particles, which have recently emerged as advanced biomaterials, have great potential for use as cell/drug carriers for localised drug delivery and as biomimetic scaffolds for future regenerative therapies. Biological properties such as biocompatibility, biodegradability, immunogenicity of biomaterials, and current application strategies are discussed. Finally, the final remarks and prospects for such advanced biomaterials are discussed. This article discusses stem cell biology, biomaterials, and technological approaches, as well as the design of biomaterials and devices used in vivo and in vitro. Generating new functional liver substitutes, improving bone repair processes, neurogenesis, groundbreaking models of cardiac fibrosis, and developing novel venous valve prostheses are some of the specific topics covered. This interdisciplinary approach emphasises how various properties of biomaterials and devices play a role in promoting Nano materials to Modern Technology.