Feb 11, 2016
Bumpy liquid films could simplify fabrication of microlenses
Posted by Karen Hurst in category: futurism
Keeping the microfabrication process smooth.
Have you ever noticed that when heated a film of oil in a pan doesn’t remain completely flat? Instead, it forms a wavy pattern that resembles the exterior of an orange. These sorts of deformations inspired a group of researchers at the Technical University of Darmstadt, in Germany, to explore whether they could be used to improve and streamline microfabrication processes.
The film of oil is a classic example of a hydrodynamic systems with a liquid-gas or liquid-liquid interface while, for instance,. Other examples include bubbles and the tiny droplets of fat in milk have a liquid-liquid interface. Planar liquid films, like the oil film, are particularly mechanically unstable and may undergo changes in morphology if not kept at a uniform temperature.
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