The so-called coffee stain effect has been intensively studied over the past decades, but most of studies are focused on sessile droplets. In this paper, we analyse origin difference between deposition suspended particles in a drop and an axisymmetric deposited fibre. First, model shape fibre its evaporative flux with some approximations to derive analytical calculations. Then, for pinned conta...

The adhesion of three fschericbia co/i strains on to six poly(methacrylates) differing in hydrophohicity and surface charge was measured as a function of time under laminar flow conditions. Polymers used were poly(methyl methacrylate) (PMMA), poly( hydroxyethyl methacrylate) (PHEMA) and copolymers of MMA or HEMA with either 15% methacrylic acid (MAA) or 15% trimethylaminoethyl methacrylate-HCI ...

Using literature data on iron melts, an expression of the surface tension cast melts as a function temperature and composition was obtained. Its predictions were satisfactorily compared with reported experimental results. Then, analysis information sessile drop experiments onto graphite substrates showed strong adhesion between these two phases when sulfur is present its dramatic decrease activ...

Although the evaporation mode of sessile droplets is almost universally characterized as either constant contact radius (CCR) or constant contact angle (CCA), here we investigate two alternatives where the contact line speed is either constant or inversely proportional to the droplet radius. We present supporting evidence from our experiments on poly(ethylene oxide) (PEO) polymer solutions and ...

An experimental study about the anisotropic wetting behavior of a surface patterned with parallel grooves is presented as an application example of a novel technique for investigation of complete and partial anisotropic wetting on structured surface by X-ray microtomography. Shape of glycerin droplets on such surface is investigated by X-ray micro computed tomography (microCT) acting as a non-i...