cuals2  chalcopyrite  nanocrystalline  are  synthesized  with  facile method.  the  heat  arrested  solvothermal  method  for  synthesize nanocrystalline  were  investigated.  the  time  duration  of  synthesis, temperature of solution and metal salts to solvent molar ratio can be parameters  that we are  studied. the nanoparticles were  synthesized with cucl, alcl3 and  thiourea (sc(nh2)2) as ...

in order to improve uv and visible lights photocatalytic activities of the pure anatase tio2, a novel and efficient n-doped tio2 photocatalyst was prepared by sol-gel method. n-doped titania is prepared using triethylamine (with difference molar ratios) as the nitrogen source. the crystalline structure, morphology, particle size, absorbance and band-gap and chemical structure of n-doped tio2 wa...

− We demonstrate an ultra-stable visible laser source that can be generated from injection locked infrared DFB based on optical comb. The optical comb was used as injection source and locked to an acetylene stabilization laser as a reference source of optical communication region. The DFB laser was selectively injection locked from only one among the comb mode with 25 GHz spacing. The ultra-sta...

In this study, the electronic design of a low-cost and portable spectrophotometer device capable analyzing in visible-near infrared region was established. The C#.NET-based user-friendly control software development machine learning algorithms for data classification as well comparison results were presented. When implementation studies are reviewed literature, two groups subjects become promin...

In this paper, tungsten oxide thin films were successfully synthesized by the laser pulse deposition (PLD) method using a pulsed (ND-YAG) and wavelength (1064 nm) on glass substrate at different fluencies. The effect of increasing fluency, optical structural properties WO3 nanoparticle films, was investigated UV-Visible spectrophotometer, X-Ray diffraction (XRD), atomic force microscope (AFM) S...

BACKGROUND Sunglasses users may only be assured on their ultraviolet protection by purchasing certified products, however they are not able to check if sunglasses are still ultraviolet (UV) protected as they age, unless they resort themselves to a professional who is qualified for using a spectrophotometer and is acknowledged on the standards for providing a report for the user. Current literat...

Particle-size distribution and the concentration of polystyrene particles suspended in water were accurately recovered from the inversion of spectral extinction data measured with a commercial spectrophotometer. The instrument was modified by placing a spatial filter in the collection optics to prevent low-angle scattered light from affecting the measurement of transmitted power. The data were ...

We present a polarization-entangled photon pair source operating in the visible light range around 532 nm. Employing collinear crossed-crystal scheme with type-I degenerate phase matching barium borate (BBO), our achieves brightness of 9.5 k pairs/s/mW and quantum state fidelity 98.3%, making it candidate for integration microscopes make use advantages mid-visible optimized single-photon detect...