Spreading of evaporative liquid drops in a thin porous layer has been studied. The entire spreading process can be divided into three distinct phases according to the change of the wetted porous region size. The first phase is characterized by the expansion of the wetted porous region and shrinking of the liquid drop. Contact line pinning is observed in the wetted porous region in the second ph...

We demonstrated enhanced surface plasmon resonance (SPR) detection by incorporating an indium tin oxide (ITO) layer on a thin gold film. Porous ITO layers were fabricated by e-beam evaporation and slanted deposition at room temperature and the ITO structure was optimized in terms of the surface roughness and the SPR curve characteristics. In sensing experiments, the results obtained by ethanol–...

Organic photovoltaic (OPV) devices based on the copper (II) phthalocyanine(CuPc)/ fullerene(C60) system are an innovative photovoltaic technology optimal for situations requiring low-cost, transparent, and flexible devices. Furthermore, the high degree of reproducibility of this system allows for the ready study of new OPV technologies. Here, we have used this system to elucidate systematic str...

The most significant process for optical coating is variant of vacuum deposition. Zinc sulphide having direct and large band gap which is use in opto electronics. By using ZnS material in thermal evaporation technique and characterizing the minimum reflectance and maximum transmittance in visible wavelength and energy gap increases with increasing thickness having direct and large band gap. Whe...

Abstract The presence of a metallic layer can influence the properties high-temperature superconductors underneath. We investigate structures deposited in form nanoparticles or continuous layers by electron beam evaporation ion sputtering on Y1Ba2Cu3O7-x (YBCO) thin films. To generally avoid diffusion metal atoms an additional barrier is introduced. Detailed measurements magnetic moment superco...

We examine a fluid dynamic model for the evolution of a precorneal tear film that includes evaporation of the aqueous layer and a wetting corneal surface. Our model extends previous work on the break-up time for a post-blink tear film to include a more realistic model for evaporation. The evaporation model includes the effects of conjoining pressure and predicts the existence of an equilibrium ...

A facile method for fabrication of silver gratings using nanoparticle ink and nanoimprint lithography is investigated. The properties grating planar samples, with without a PMMA layer, are compared thermally evaporated on nanoimprinted PMMA. pattern successfully fabricated the directly glass substrate layer. We find that use adversely affects structural, optical electrical surfaces gratings. Gr...

The band gap and optical properties dielectric functions and optical constants of Ge thin films with various thicknesses below 50 nm, which were synthesized with electron beam evaporation technique, have been determined using spectroscopic ellipsometry and UV-visible spectrophotometry. The optical properties are well described with the Forouhi–Bloomer model. Both the band gap and optical proper...

In the past years, use of low silver content SAC0307 (99Sn0.3Ag0.7Cu wt%) solder alloy grew considerably due to its good soldering quality. latest version this alloy, manganese, and bismuth are used improve further parameters. study, a reliability issue, whisker growth from SAC0307-Mn07 SAC0307-Bi1-Mn07 alloys was investigated. Ultra-thin films (in 100–150 nm thickness) were vacuum evaporated i...