Mushroom and bacteria turn light into clean energy

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A team from the Stevens Institute of Technology have developed a 'power mushroom' able to create renewable energy.

According to their study, published in the paper Nano Journal, the team used button mushrooms due to their optimal levels of humidity and temperature which make them exceptional hosts to bacteria.

They then employed 3D printing technology to create a pattern of graphene nanoribbons on the cap of a living mushroom. They then printed cyanobacteria on top of the pattern using special 'bio-ink'.This bacteria was selected due to its efficiency in converting sunlight to energy. According to researchers who participated in the study it has 'an internal quantum efficiency of nearly 100%.'

The team is calling this 'engineered bionic symbiosis'. The mushroom provides the cyanobacteria with shelter and nutrients which allows the bacteria to thrive and in turn create more energy.

Exposing mushroom to light triggers cyanobacterial photosynthesis during which the bacteria releases electrons that are in turn captured by the strips of graphene. According to a news release by the American Chemical Society, the team managed to generate 65 nanoamps of electric energy.

RUNDOWN SHOWS:
1. Button mushrooms bacteria-friendly cap
2. 3D printing of graphene nanoribbons on mushroom
3. Cyanobacteria 3D printed on mushroom: Explanation of its qualities
4. "Power mushroom" creates 65 nanoamps of electric energy

VOICEOVER (in English):


SOURCES:
Nano Letters, American Chemical Society
https://pubs.acs.org/doi/ipdf/10.1021/acs.nanolett.8b02642
https://www.eurekalert.org/pub_releases/2018-11/acs-abm110218.php