Physicochemical properties of p-hydroazobenzene: a nonlinear optical crystal

Crystal of p-hydroazobenezene was grown and the crystal system is confirmed by analysis the XRD data. The material delineated in monclinic system with the space group of Pbca. FTIR and Raman spectrum analysis have been performed to comprehend the molecular interactions and to learn the vibrational nature of the functional groups in the title compound. Optical, and thermal stability analysis were also been carried out. Exhaustive explorations were conducted on the optical properties of the crystal using both quantum chemical calculations and experimental data

Physicochemical properties of p-hydroazobenzene: a nonlinear optical crystal

138-142Crystal of p-hydroazobenezene was grown and the crystal system is confirmed by analysis the XRD data. The material delineated in monclinic system with the space group of Pbca. FTIR and Raman spectrum analysis have been performed to comprehend the molecular interactions and to learn the vibrational nature of the functional groups in the title compound. Optical, and thermal stability analysis were also been carried out. Exhaustive explorations were conducted on the optical properties of the crystal using both quantum chemical calculations and experimental data

FLUKA Monte Carlo for Basic Dosimetric Studies of Dual Energy Medical Linear Accelerator

General purpose Monte Carlo code for simulation of particle transport is used to study the basic dosimetric parameters like percentage depth dose and dose profiles and compared with the experimental measurements from commercial dual energy medical linear accelerator. Varian Clinac iX medical linear accelerator with dual energy photon beams (6 and 15 MV) is simulated using FLUKA. FLAIR is used to visualize and edit the geometry. Experimental measurements are taken for 100 cm source-to-surface (SSD) in 50 × 50 × 50 cm3 PTW water phantom using 0.12 cc cylindrical ionization chamber. Percentage depth dose for standard square field sizes and dose profiles for various depths are studied in detail. The analysis was carried out using ROOT (a DATA analysis frame work developed at CERN) system. Simulation result shows good agreement in percentage depth dose and beam profiles with the experimental measurements for Varian Clinac iX dual energy medical linear accelerator

FLUKA Monte Carlo for Basic Dosimetric Studies of Dual Energy Medical Linear Accelerator

General purpose Monte Carlo code for simulation of particle transport is used to study the basic dosimetric parameters like percentage depth dose and dose profiles and compared with the experimental measurements from commercial dual energy medical linear accelerator. Varian Clinac iX medical linear accelerator with dual energy photon beams (6 and 15 MV) is simulated using FLUKA. FLAIR is used to visualize and edit the geometry. Experimental measurements are taken for 100 cm source-to-surface (SSD) in 50 × 50 × 50 cm3PTW water phantom using 0.12 cc cylindrical ionization chamber. Percentage depth dose for standard square field sizes and dose profiles for various depths are studied in detail. The analysis was carried out using ROOT (a DATA analysis frame work developed at CERN) system. Simulation result shows good agreement in percentage depth dose and beam profiles with the experimental measurements for Varian Clinac iX dual energy medical linear accelerator

Структурні, оптичні, морфологічні та теплові властивості наночастинок CuO, підготовлених методом золь-гелю

У статті описана екологічна технологія підготовки наночастинок оксиду міді, їх структурні та морфологічні параметри та аналіз енергії забороненої зони. Нанорозмірні частинки оксиду міді (CuO) були виготовлені методом золь-гелю. Для аналізу наночастинок застосовуються порошкова рентгенівська дифракція (XRD), інфрачервона спектроскопія з використанням перетворення Фур'є (FTIR), скануюча електронна мікроскопія, спектри поглинання в ультрафіолетовій і видимій (UV-vis) областях та теплові спектри. Аналіз порошкової XRD показав, що було виявлено моноклінну структуру з відмінним розміром кристалітів та d-відстанню. Спектральні результати FTIR підтвердили наявність енергетичних смуг Cu-O у підготовлених наночастинках. Морфологія зразків підтверджує випадкову сферичну форму наночастинок. Підготовлені частинки CuO показують, що зміна кольору відбувається при синтезі, що підтверджують його відповідні піки при 253 нм, які були проаналізовані за допомогою UV-vis спектроскопії. Ширина забороненої зони дорівнює 1.3 еВ. Екзотермічні та ендотермічні процеси підготовлених наночастинок були досліджені експериментами TG/DTA.This article aims to report an environmental friendly preparation technique of copper oxide nanoparticles, their structural and morphological properties, and band gap energy analysis. Copper oxide (CuO) nanosize particles are prepared by sol-gel route. Powder X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, UV-visible absorbance spectra and thermal spectra are used to analyze the nanoparticles. Powder XRD analysis showed that monoclinic structure with excellent crystallite size and d-spacing distance was found. FTIR spectral results confirmed the presence of the Cu-O bands in prepared nanoparticles. Morphology of the samples indicates and confirms the random spherical shape of nanoparticles. Prepared CuO particles show that a color change occurs in synthesis and confirm its respective peaks at 253 nm, which were analyzed through UV-Vis spectroscopy. The band gap is determined equal to 1.3 eV. The exothermic and endothermic processes of prepared nanoparticles were investigated by TG/DTA experiments

Influence of Ni and Sn Perovskite NiSn(OH)₆ Nanoparticles on Energy Storage Applications

New NiSn(OH)6 hexahydroxide nanoparticles were synthesised through a co-precipitation method using various concentrations of Ni2+ and Sn4+ ions (e.g., 1:0, 0:1, 1:2, 1:1, and 2:1; namely, N, S, NS-3, NS-2, and NS-1) with an ammonia solution. The perovskite NiSn(OH)6 was confirmed from powder X-ray diffraction and molecule interactions due to different binding environments of Ni, Sn, O, and water molecules observed from an FT-IR analysis. An electronic transition was detected from tin (Sn 3d) and nickel (Ni 2p) to oxygen (O 2p) from UV-Vis/IR spectroscopy. Photo luminescence spectroscopy (PL) identified that the emission observed at 400–800 nm in the visible region was caused by oxygen vacancies due to various oxidation states of Ni and Sn metals. A spherical nanoparticle morphology was observed from FE-SEM; this was due to the combination of Ni2+ and Sn4+ increasing the size and porosity of the nanoparticle. The elemental (Ni and Sn) distribution and binding energy of the nanoparticle were confirmed by EDAX and XPS analyses. Among the prepared various nanoparticles, NS-2 showed a maximum specific capacitance of 607 Fg−1 at 1 Ag−1 and 56% capacitance retention (338 Fg−1 and 5 Ag−1), even when increasing the current density five times, and excellent cycle stability due to combining Ni2+ with Sn4+, which improved the ionic and electrical conductivity. EIS provided evidence for NS-2’s low charge transfer resistance compared with other prepared samples. Moreover, the NS-2//AC (activated carbon) asymmetric supercapacitor exhibited the highest energy density and high-power density along with excellent cycle stability, making it the ideal material for real-time applications