Volume-12 ~ Issue-1 ~ January-2019

Abstract: Group III-nitride semiconductor materials especially AlGaN are key-emerging candidates for the advancement of ultraviolet (UV) photonic devices. Numerous nanophotonics approaches using nanostructures (e.g., nanowires, nanorods, and quantum dots/disks) and nanofabrication (e.g., substrate patterning, photonic crystals, nanogratings, and surface-plasmons) have been demonstrated to address the material growth challenges and to enhance the device efficiencies of photonic devices operating at UV wavelengths. Here, we review the progress of nanophotonics implementations using nanostructured interfaces and nanofabrication approaches for the group III-nitride semiconductors to realize efficient UV-based photonic devices. The existing challenges of nanophotonics applications are presented. This review aims to provide analysis of state-of-the-art nanophotonic approaches in advancing the UV-photonic devices based on group III-nitride semiconductors.

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Abstract:Hydroxyamide Hydrochloride was prepared by condensation of N (4- Fluoro) benzamidoyl chloride and N- phenyl hydroxylamine at 00-50C in ether medium. White crystals of N-HydroxyN- phenyl benzamidine hydrochloride were separated. They were separated and recrystallized from absolute alcohol. The newly synthesized reagent was characterised on the basis of melting point, elemental analysis and ultra violet spectra. The molecular formula C19H16 N2OFCl is confirmed from elemental analysis data. The ultra violet absorption spectra of hydroxyamidine in ethanol show three distinct absorption band attributed to π-π* transitions. The band observed around 207nm has been assigned as local excitation band of phenyl chromophore and the other two bands around 250-260 nm and 300-322 nm have been assigned as electron transfer band. Electron transfer band are sensitive to substitution in the aromatic system of compound.

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Abstract:Group III-nitride semiconductor materials especially AlGaN are key-emerging candidates for the advancement of ultraviolet (UV) photonic devices. Numerous nanophotonics approaches using nanostructures (e.g., nanowires, nanorods, and quantum dots/disks) and nanofabrication (e.g., substrate patterning, photonic crystals, nanogratings, and surface-plasmons) have been demonstrated to address the material growth challenges and to enhance the device efficiencies of photonic devices operating at UV wavelengths. Here, we review the progress of nanophotonics implementations using nanostructured interfaces and nanofabrication approaches for the group III-nitride semiconductors to realize efficient UV-based photonic devices. The existing challenges of nanophotonics applications are presented. This review aims to provide analysis of state-of-the-art nanophotonic approaches in advancing the UV-photonic devices based on group III-nitride semiconductors........

Keywords: Saudi Arabia, Hail region, groundwater, agricultural soil, trace elements.

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[2]. Ambiga N. (2017): Analysis of Elements and Foods for the Human Body and Avoiding the Unnecessary Diseasesusing Big Data and Artificial Intelligence (Food Advisor). IOSR Journal Of Computer Engineering, 19, 57-67.
[3]. WHO (World Health Organization) (2011) Guidelines for drinkingwater quality, 4th edn. World Health Organization, Geneva
[4]. Bhattacharya P., Misra S., Hussain M. (2016): Nutritional Aspects of Essential Trace Elements in Oral Health and Disease: An Extensive Review. Scientifica, 2016, 1-12.
[5]. Abdel-Satar A., Al-Khabbas M., Alahmad W., Yousef W., Alsomadi R. and Iqbal T. (2017): Quality assessment of groundwater and
agricultural soil in Hail region, Saudi Arabia. The Egyptian Journal of Aquatic Research, 43, 55-64..