On a tweezer for droplets

John W.M. Bush; François Peaudecerf; Manu Prakash; David Quéré

doi:10.1016/j.cis.2010.01.002

On a tweezer for droplets

John W.M. Bush
, François Peaudecerf
, Manu Prakash
, David Quéré

Research output: Contribution to journal › Review article › peer-review

Abstract

We describe the physics behind a peculiar feeding mechanism of a certain class of shorebirds, in which they transport their prey in droplets from their beak tips mouthwards. The subtle interplay between the drop and the beak's tweezering motion allows the birds to defy gravity through driving the drop upwards. This mechanism provides a novel example of dynamic boundary-driven drop motion, and suggests how to design tweezers for drops, able to trap and to move small amounts of liquid.

Original language	English
Pages (from-to)	10-14
Number of pages	5
Journal	Advances in Colloid and Interface Science
Volume	161
Issue number	1-2
DOIs	https://doi.org/10.1016/j.cis.2010.01.002
Publication status	Published - 15 Dec 2010
Externally published	Yes

Keywords

Capillary ratchet
Contact angle hysteresis
Self-propulsion

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10.1016/j.cis.2010.01.002

Cite this

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abstract = "We describe the physics behind a peculiar feeding mechanism of a certain class of shorebirds, in which they transport their prey in droplets from their beak tips mouthwards. The subtle interplay between the drop and the beak's tweezering motion allows the birds to defy gravity through driving the drop upwards. This mechanism provides a novel example of dynamic boundary-driven drop motion, and suggests how to design tweezers for drops, able to trap and to move small amounts of liquid.",

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AU - Bush, John W.M.

AU - Peaudecerf, François

AU - Prakash, Manu

AU - Quéré, David

PY - 2010/12/15

Y1 - 2010/12/15

N2 - We describe the physics behind a peculiar feeding mechanism of a certain class of shorebirds, in which they transport their prey in droplets from their beak tips mouthwards. The subtle interplay between the drop and the beak's tweezering motion allows the birds to defy gravity through driving the drop upwards. This mechanism provides a novel example of dynamic boundary-driven drop motion, and suggests how to design tweezers for drops, able to trap and to move small amounts of liquid.

AB - We describe the physics behind a peculiar feeding mechanism of a certain class of shorebirds, in which they transport their prey in droplets from their beak tips mouthwards. The subtle interplay between the drop and the beak's tweezering motion allows the birds to defy gravity through driving the drop upwards. This mechanism provides a novel example of dynamic boundary-driven drop motion, and suggests how to design tweezers for drops, able to trap and to move small amounts of liquid.

KW - Capillary ratchet

KW - Contact angle hysteresis

KW - Self-propulsion

UR - https://www.scopus.com/pages/publications/78149280862

U2 - 10.1016/j.cis.2010.01.002

DO - 10.1016/j.cis.2010.01.002

M3 - Review article

AN - SCOPUS:78149280862

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SP - 10

EP - 14

JO - Advances in Colloid and Interface Science

JF - Advances in Colloid and Interface Science

IS - 1-2

ER -

On a tweezer for droplets

Abstract

Keywords

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