Bacterial cellulose in headphones


#1

I just saw this pass by on Twitter. Sony apparently filed a patent for using bacterial cellulose in headphones back in the early nineties.

Link: https://patents.google.com/patent/US5274199A/en
Related paper: https://pubs.acs.org/doi/10.1021/acssynbio.8b00423

(via Christina Agapakis)


#2

And there is an ongoing research to make an electronic paper our of bacterial cellulose. This is one is highly interesting. I saw the photo of the acoustic membrane in hi-fidelity loudspeakers, some where. I might have saved it. I did not manage to learn more from Sony’s site. I remember having read that they stopped using it because it was not cost effective for something of the sort.


#3

Nice! Do you know the source of that photo @amiridina? It looks like a proof-of-concept and I’m interested to know who made it :slight_smile:


#4

I could not find it. I will share it as soon as I have sometime to search more deeply. Meanwhile, I found this article and the photo of the same headphones set when I googled bacterial cellulose + sony + high-fidelity headphones.
https://hometheaterreview.com/sony-mdr-r10-headphones-reviewed/


#5

Check out yokoshimizu.com. She artist / biochemistry researcher in Tokyo. You will find a similar “bio-speaker” as the one in the photo above.