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Rose Transistor and Capacitor

05.03.2017

Scientists at Linköping University have figured out how to infiltrate a living rose with conductive polymers, non-invasively, and make a capacitor out of it.

This became a practical application of the same group's discovery made two years earlier. In November 2015, they published an article in the journal Science Advances in which they described how to force a rose to absorb a conductive polymer solution. The hydrogel was formed in the stem of the flower and formed "wires", so if you add electrodes at its two ends and a gate in the middle, you get a transistor.

Now this development has taken a material form - the material developed by Roger Gabrielson is formed inside the flower, and then the current of internal fluids helps to create wires, not only in the trunk, but throughout the plant, down to the leaves and petals.

“We charged the rose hundreds of times without losing capacity,” said Eleni Stavrinidou, a member of the development team. “And the capacity is comparable to the capacity of supercapacitors. The plant could, without any optimization, power our magnetic discharge pump and various sensors ". In addition to supplying energy to sensors and switches, it is theoretically possible to even create a fuel cell inside plants.

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