Now two research groups from the University of Cambridge, led by Professor Ray Goldstein of the Department of Applied Mathematics and Theoretical Physics, and Professor Lynn Gladden of the Department of Chemical Engineering and Biotechnology, have done just that. Their findings are published in volume 642 of Journal of Fluid Mechanics, published by Cambridge University Press.
They have studied the giant cells of the Characean algae – cells that can measure up to 10cm in length and 1mm in diameter. This exceptional size makes the standard methods of distributing material within cells impossible, so Characean algae have long been known to employ ‘conveyor belts’ along their cellular walls to move food and waste around. It is the spatial distribution of the velocity of this movement that has been measured for the first time using state-of-the art magnetic resonance imaging techniques.
The impact of their discoveries and research techniques will be far-reaching. Professor Squires comments: “[The methods used] are incredibly powerful and have the potential to revolutionise our understanding of a wide range of environmentally and industrially relevant fluid flows. The technique is completely non-invasive, requires no flow tracers and can be performed in non-transparent materials."
Looking to the future, Professor Squires stated that this study ‘should serve as a potent reminder that the immense variety of organisms on Earth contains a wealth of expertise that may be mined for biomimetic [i.e. nature-imitating] solutions.’
Hannah Gregory | alfa
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