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Nature 461, 356 (17 September 2009) | doi:10.1038/461356a; Published online 16 September 2009
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Fluid dynamics: To merge or not to merge ...
Frieder Mugele1
Abstract
... that is the dilemma addressed in a study of oppositely charged liquid drops controlled by an electric field. Contrary to conventional wisdom, beyond a critical charge, the drops fail to merge.
Just as we may be guided by a sense of 'more is more' in our daily lives, so physicists often use this principle as a good first guess to explain physical phenomena. For example, in a situation as simple as two objects with electrically opposite charges, the expectation is that the more strongly charged the objects are, the more they should attract each other.
- Frieder Mugele is at the MESA+ Institute for Nanotechnology and the Faculty of Science and Technology, University of Twente, 7500 AE Enschede, the Netherlands.
Email: f.mugele@utwente.nl
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