Construct · 1 fields · 1 citations

bead: a standalone construct

One name. One construct. A landmark on the map.

● anchor · a standalone construct Nearest construct by meaning·not indexed
bead1 CONSTRUCTLiquid beadDE GENNES · WETTING

A single standalone construct; nearby constructs are located against it in the Collider. Tap a field for its definition, unit, and measures.

Surface physics

Liquid pulls itself into a rounded drop

In surface physics a bead is a drop of liquid that has balled up on a surface it does not wet, its shape set by the competition between surface tension, which minimises interfacial area, and gravity, which flattens it. Whether a liquid beads up or spreads out is governed by the contact angle and the relative surface energies of liquid, solid, and vapour. De Gennes, Brochard-Wyart, and Quere's Capillarity and Wetting Phenomena develops the physics of why water beads on a waxy leaf but films across clean glass. The referent is a capillary shape of a fluid, measured by contact angle and drop radius, distinct from a devotional counter or a strip of deposited weld metal.[1]

Unit
The contact angle and drop radius of a liquid resting on a non-wetting surface
Recovery means
Not applicable
Measured by
Characterised by contact-angle measurement and drop-shape analysis against surface energy

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Nearby constructs

artifact2 fields · 2 citationsjingle · one word, two constructsassay1 fields · 1 citationsanchor · a standalone constructbase3 fields · 4 citationsjingle · one word, three constructs

References

  1. de Gennes, P.-G., Brochard-Wyart, F., & Quere, D. (2004). Capillarity and wetting phenomena: Drops, bubbles, pearls, waves. Springer. ISBN 9780387005928

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