In this study a sensitive electrochemical sensor for the detection of E.coli has been developed using silver nanoparticle (Ag) embedded poly(9,9-dioctylfluorene-ran-phenylene) (CFP) nanocomposite as a conductive platform and DNA hybridization technique. The new polymer was synthesized from 9,9-dioctylfluorene and 1,3-dichlorobenzene and biphenyl through Friedel Crafts alkylation reacti...

We study the spreading and fingering of drops of silicone oil on a rotating substrate for a range of rotation speeds and drop volumes. The spreading of the drop prior to the onset of fingering is found to follow the theoretically predicted time dependence, but with a large shift in time scale. For the full range of experimental parameters studied, the contact line becomes unstable and fingers d...

This paper investigates the upconversion luminescence modification of codoped nanoparticles with lanthanides ions based thin films through adding a coating. First, these composed Er3+-Yb3+ co-doped anatase-TiO2 are prepared using spin coating technique supported by design experiment (DOE) approach Hadamard matrix order 4 to improve deposition conditions. For step, different thicknesses Al2O3 la...

Spin-coating, one of Philips’ widespread wet-chemical coating technologies, is sensitive to substrate inhomogeneities. That leads sometimes to coating imperfections that are much larger than their causes. In order to understand how some of these imperfections affect the coating procedure, some experiments are going to be studied. In this case, a gravity-driven set-up will be used. The phenomeno...

We consider spin-coating over a small sinusoidal topography modelling the physical problem of the coating of a television screen. This involves depositing a phosphor layer on a substrate with a precoating consisting of small parallel striations. Despite the fact that the basic flow is radial, we show that the final liquid coating does not have radial variation; rather, it varies according to th...