capillary action

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capillary action

the process involving molecular adhesion by which the surface of a liquid in a tube is either elevated or depressed, depending on the cohesiveness of the liquid molecules. The more cohesive the molecules, the more depressed will be the surface of the liquid. Less cohesive liquid molecules will adhere to the surfaces of the tube in which they are contained and elevate the surface of the liquid. Also called capillary attraction, capillarity.

capillary action

The spontaneous movement of a liquid up thin tubes, due to adhesive and cohesive forces and surface tension.

capillary action

A surface tension effect shown by the elevation or depression of a liquid at the region of contact with a solid, as in capillary tubes.
Synonym: capillarity
See also: action
References in periodicals archive ?
Part of these aimed at investigating their behavior in capillary flows at high shear rates, but the attention was rarely focused on the region close to the onset of flow instabilities (2-8).
Capillary flow apparatus for inoculation of a test substrate.
Conventional underfill materials are implemented by capillary flow process.
This equation was further developed to describe the nonadiabatic case for the compressible fluid through the slit die (16), and more recently was extended to investigate the capillary flow (6), (17).
hydrophilic: water wicking, extra absorbency, easy capillary flow, anti-fog, easy take-up and good coverage for printing, coating, dyeing, etc.
In particular, Michrom's new high duty-cycle nanoflow UHPLC platform, along with their revolutionary CaptiveSpray[TM] LC-MS interface, together will provide our customers with significant gains in throughput, sensitivity and robustness for proteomics and other nano and capillary flow LC-MS applications.
In scientific work, Williams operated the Capillary Flow Experiment, which uses liquid silicone to study how fluids move in a microgravity environment.
Control of board temperature during underfill processing, to promote faster capillary flow while preventing premature gelation, is significant.
Capillary flow through the sprue is defined as - [Q.
Advanced technologies are used to increase sample analysis productivity and enhance detection limit, including QuEChERS with dispersive SPE for cleanup; GC with capillary flow technology backflush and LTM-GC; GC/MS, GC/MS/MS, LC/FLD; and LC-QQQ, Q-TOF LC/MS.
Figure 3a and b depicts the capillary flow curves for the resins m-HDPE-1 and ZN-HDPE-0, respectively, at different temperatures, namely from 140CC to 230[degrees]C.

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