Fake jellyfish made from rat cells have a place in our hearts (video)

Fake jellyfish made from rat cells have a place in our hearts (video)

There’s a whole sea of jellyfish out there ready to sting indiscriminately. So, why do we keep trying to make them? Scientists from Harvard and Caltech have a pretty good reason for creating fake jellies — they hope to mend broken hearts by adapting their ‘pumping’ style of movement. Much like our own vital organ, the creatures are a mass of muscle adept at shifting fluid, meaning the research has several medical applications, such as bioengineered pacemakers for busted tickers. In creating the Medusoids, the team used a silicon scaffold coated in functional rat cardiac tissue, copying the muscle layout of a real jellyfish as best they could. When immersed in salt water and treated to bursts of current, the cells contract and cause the silicon sheet to move in a way eerily similar to the real thing. Next step for the team? An autonomous version that can move and potentially feed without their influence, of course. And, after seeing the little swimmers in action, we’ve certainly got palpitations. See what we mean after the break.

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Fake jellyfish made from rat cells have a place in our hearts (video) originally appeared on Engadget on Mon, 23 Jul 2012 14:59:00 EDT. Please see our terms for use of feeds.

Permalink The Register  |  sourceNature Biotechnology  | Email this | Comments

New fuel cell keeps on going even once the fuel’s dried up

New fuel cell keeps on going even once the fuel''s dried up

Vanadium oxide seems to be the go-to guy in power storage right now. A new solid-oxide fuel cell — developed at Harvard’s School of Engineering and Applied Sciences — that can also store energy like a battery, also uses the stuff. In the new cell, by adding a VOx layer it allows the SOFC to both generate and store power. Example applications would be situations where a lightweight power source is required, with the potential to provide reserve juice should the main fuel source run out. The team who developed the cell usually work with platinum-based SOFCs, but they can’t store a charge for much more than 15 seconds. By adding the VOx, this proof of concept extended that by 14 times, with the potential for more lifespan with further development. Especially handy if you’re always running out of sugar.

New fuel cell keeps on going even once the fuel’s dried up originally appeared on Engadget on Sun, 01 Jul 2012 06:16:00 EDT. Please see our terms for use of feeds.

Permalink PhysOrg  |  sourceACS Pubs  | Email this | Comments