Method for error analysis of aerosol parameter estimation with assumed noises which are included in the measured solar direct and diffuse irradiance is proposed. The noises included in the measured solar direct and diffuse irradiance are assumed to be Chi-Square probability density function due to the fact that the measured irradiance is represented as output power which is square of output vol...

density, viscosity and refractive index of pure, binary and ternary mixtures of diethanolamine (dea) and methyl diethanolamine (mdea) with water have been measured at different temperatures from 288.15 k to 323.15 k at atmospheric pressure. also, this study presents the effects of mixture composition and temperature upon these thermo- physical properties. to measure the density and refractive i...

polythiophenes are of considerable interest as synthetic metals. the optical properties of polythiophenes can be easily affected by alkyl chain or other side groups to the thiophene ring. the effect of polymerization degree on the energy gap was studied in the case of polythiophene as a conjugated polymer at b3lyp/6-31+g(3d,3p) level of theory. up to n = 16 could be confident that this degree o...

The article proposes a method for measuring the refractive index using goniometric system that does not require prism angle, which simplifies measurement process compared to widely used methods of minimum deviation and autocollimation. This can be measure samples in form triangular prisms visible, ultraviolet infrared ranges. To implement method, was used. obtain reflection refracted beam, fixe...

In this paper we investigate focusing properties of graded index (GRIN) photonic crystal (PC) structures which are composed of different materials with different refractive indices. GRIN PC structure is constructed from air holes in dielectric background. The holes radii are varied in the normal direction to the propagation in such a way that a parabolic effective refractive index is produced. ...

In this paper, we have proposed an optical sensor design for urine analysis for diabetic applications. The sensor design consists of two dimensional photonic crystal ring resonator structure. Finite Difference Time Domain (FDTD) method has been used for the analysis. MEEP (MIT Electromagnetic Equation Propagation) simulation tool has been used for modeling and designing of photonic crystal ring...