Volume 605 Issue 7911, 26 May 2022

France Nouvelles Nouvelles

Volume 605 Issue 7911, 26 May 2022
France Dernières Nouvelles,France Actualités
  • 📰 Nature
  • ⏱ Reading Time:
  • 23 sec. here
  • 2 min. at publisher
  • 📊 Quality Score:
  • News: 13%
  • Publisher: 68%

This week in Nature: Fluid dynamics – Artificial cilia offer electronic control over surface liquid flows. Browse the full issue here:

Cilia are characterized by slender, threadlike projections, which are used by biological organisms to control fluid flows at the microscale. Attempts to mimic these structures and engineer cilia-like systems to have broad applications have proved problematic. In this week’s issue,present electronically controlled artificial cilia that can be used to create flow patterns in near-surface liquids.

The researchers use surface-mounted platinum strips, each about 50 micrometres long, 5 micrometres wide and 10 nanometres thick, and capped on one side with titanium. Applying an oscillating potential with an amplitude of around 1 volt to the cilia drives ions on to and off of the exposed platinum surface. These ions create asymmetric forces that generate a beating pattern that can be used to pump surface liquids in various flow geometries.

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France Dernières Nouvelles, France Actualités

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