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The narrower the V-groove is, the better the capillary flow of liquids is even for highly viscous liquids such as blood; this effect has been used to produce an autonomous assay. [5] [34] The fabrication of a V-groove is more difficult than a U-groove as it poses a higher risk for faulty construction, since the corner has to be tightly sealed. [29]
NB. Picture shows the anti-drip groove and pinhole underneath the spout of Melitta coffee pots (protected by D.R.P. patents) model No. 301 for 1½ cups and model No. 304 for 4 cups, presumably manufactured in the 1920s or 1930s.) Walker, Jearl Dalton (1984-10-01). "The troublesome teapot effect, or why a poured liquid clings to the container".
The designed device has two sides: forward (F) side, made of chromatography paper with three channels spotted with 1.5 mL Anti-A, Anti-B, and Anti-D antibody solutions each, and reverse (R) side, made with blood separation membrane and connected to A-type and B-type antibodies channels. The PAD is fabricated using a combination of wax dipping ...
Capillary action of water (polar) compared to mercury (non-polar), in each case with respect to a polar surface such as glass (≡Si–OH). Capillary action (sometimes called capillarity, capillary motion, capillary rise, capillary effect, or wicking) is the process of a liquid flowing in a narrow space without the assistance of external forces like gravity.
The decrease in surface tension increases the wettability of the capillary walls, making it easier for the fluid to flow through the capillary. Heat also effects the viscosity of a fluid inside a capillary. An increase in heat decreases the viscosity of the lumenal fluid. A good example of this action can be observed in the human body during ...
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When a tube of a narrow bore, often called a capillary tube, is dipped into a liquid and the liquid wets the tube (with zero contact angle), the liquid surface inside the tube forms a concave meniscus, which is a virtually spherical surface having the same radius, r, as the inside of the tube. The tube experiences a downward force of magnitude ...
Self-cleaning surfaces are a class of materials with the inherent ability to remove any debris or bacteria from their surfaces in a variety of ways. The self-cleaning functionality of these surfaces are commonly inspired by natural phenomena observed in lotus leaves, gecko feet, and water striders to name a few.