An improved method of sessile drop for determining the surface tension of liquids

Improving Wettability at Positive Electrodes to Enhance the Cycling Stability of Bi‐Based Liquid Metal Batteries

“…The surface tension was obtained on the basis of the Young–Laplace differential equation . [ 47 ] 5 g of either Bi, Bi‐Se 1 , or Bi‐Se 4 was premelted by the arc‐melting, and placed on the SUS304 pellets (30 mm diameter, 5 mm thickness) with identical surface roughness. The sample was then loaded in a vacuum chamber installed into a furnace, which was sealed, evacuated to high vacuum (1.5 × 10 −4 Pa), and heated at 500 °C for 60 min; monitor the contact angle of the liquid metal on the SUS304 substrate by an attached camera.…”

Polytherms of the density and surface tension of a zinc-aluminium-molybdenum-magnesium melt

“…The measurements were made both under heating and under cooling. The drop profile was pho tographed with a digital camera, and the images of equatorial sections of the drop were processed using an automated software suite (based on the technique detailed in [16]) for determining the thermophysical properties of materials. The measurement errors resulting from the error in determining the coordi nates of the meridional drop section were 1% (for den sity) and less than 2% (for ST) under the condition that R 0 /a < 0.05, where R 0 is the maximum drop radius, a = (2σ/(ρg)) 1/2 is the capillary constant, and g is gravity acceleration.…”

Numerical Investigation of the Effect of Viscoelasticity on Drop Retraction and the Evaluation of Interfacial Tension between Polymer Melts

“…In recent years, polymer blends have been increasingly ubiquitous in the plastics industry, i.e., semiconductors [1], nanofiltration [2], fibers [3], and printing [4], and thus have become a very active area of research in materials science. e final properties of the polymer blends depend on not only that of each polymer component but also its internal microstructure, which is the result of the processing conditions as well as the interfacial tension [5,6].…”

“…ese measuring technologies can be divided into two categories: the equilibrium methods and the dynamic methods [14]. e equilibrium methods, including the pendant drop method [16][17][18], the sessile drop method [5,6,19], and the spinning drop method [20][21][22], establish the equation of the drop shape in a mechanically balanced state and the extrapolate the interfacial tension between the polymers. Although they are applicable for both purely viscous and viscoelastic fluids with very good accuracy, it requires the matrix transparency, comparatively low viscosity of the polymer, and long time to reach equilibrium, with increased risk of thermal degeneration of the polymers.…”