Large cell gap permanent Bistable Twisted Nematic Liquid Crystal Display (π-BTN) using photo-alignment technology has been demonstrated. This display can be switched between φ and π + φ twisted states by means of a combination of in-plane electric field and vertical electric field for creating both polar anchoring breaking and an electro-hydrodynamic flow. Such device is cell gap independent. P...

Segregation in a dense solid-liquid multiphase flow is complicated by its interactions between phases. In this paper, the segregation of dense solid-liquid flow was simulated using the Finite Volume Method. A Euler-Euler multiphase simulation was conducted for the dense solid-liquid flow. The flow in the viscous regime was evaluated using kinetic theory describing the flow of smooth, slightly i...

water contamination due to the wide variety of pesticides used in agriculture is a global environmental pollution problem. in order to reach at sub-î¼gl-1 levels of detection, an efficient extraction technique is required. a simple, fast and economical method, dispersive liquid-liquid micro extraction (dllme), followed by gas chromatography-mass spectrometry was assessed for determining endosul...

a very simple, rapid and sensitive dispersive liquid-liquid microextraction (dllme) followed by gas chromatography and flame ionization detection (gc-fid) was developed for the determination of phenol and carvacrol in honey samples. a mixture of 100 µl dichloromethane (extraction solvent) and 0.5 ml acetonitrile (disperser solvent) was rapidly injected into sample solution. thereby a cloudy sol...

an efficient dispersive liquid-liquid microextraction using tetraalkylammonium bromide coated silver nanoparticles (dllme-agnps) prepared in chloroform has been successfully applied as electrostatic affinity probes to the microextraction and preconcentration of terazosin prior to spectrofluorimetry analysis. this technique is based on a ternary system of solvents, where appropriate amount of mi...

Experiments to determine positions of spherical and long particles and the orientation of long particles can be carried out in a stationary frame by fluidizing particle in a balance of the buoyant weight of the heavier than liquid particle with (1) drag, which will be realized in a vertical tube apparatus (2) hydrodynamic lift (perpendicular to flow, as in a lifting aircraft) which will be real...

Abstract Analysis of rivulet movement across flow direction in vertical flowing heated liquid film at different Reynolds numbers and initial temperatures was carried out. It is shown, that amplitude deflection increases substantially heat fluxes corresponding to the appearance thermocapillary structures type A.

Horizontal and vertical liquid bridges are simple and powerful tools for exploring the interaction of high intensity electric fields (8-20 kV/cm) and polar dielectric liquids. These bridges are unique from capillary bridges in that they exhibit extensibility beyond a few millimeters, have complex bi-directional mass transfer patterns, and emit non-Planck infrared radiation. A number of common s...

The effects of dissolved air in the dielectric liquid FC-77 on flow boiling in a microchan-nel heat sink containing ten parallel channels, each 500 ␮m wide and 2.5 mm deep, were experimentally investigated. Experiments were conducted before and after degas-sing, at three flow rates in the range of 30– 50 ml/ min. The dissolved air resulted in a significant reduction in wall temperature at which...