Building a robotic eel that swims through your body

Physicist Seth Fraden is developing a new generation of machines modeled on living creatures. His latest invention might one day treat disease by swimming its way through our blood.

As a kid, physicist Seth Fraden loved the movie “Fantastic Voyage,” about a microscopic submarine traveling through a human bloodstream. Almost 10 years ago, Fraden began a quest to create a robotic eel he could send on a similar journey, though it wouldn’t be for entertainment. The eel would be designed to deliver a drug to cells or genes. And, to capture the flexibility of the real sea creature, it would take the form of a gel that could glide through water.

Fraden recently announced he’d achieved the first couple of steps toward realizing his vision. In the journal Lab on a Chip, he reported that he and his team had created a model of a network of neurons using chemicals and microscopic containers. It’s this network that is primarily responsible for the eel’s trademark zigzag swimming motion.

Fraden next plans to embed his neural network in a gel. If everything goes as planned, the gel will actually move the same way an eel does while swimming.
The robotic eel is part of a larger effort by Fraden to build machines made from chemicals and other synthetic materials that behave like living organisms. “Animating inanimate matter” is how he describes it.

He’s not bringing inorganic matter to life. He’s building devices that act a lot like aspects and features of living creatures — clothing that mends itself using the same process our cells use to close a wound, for example, or nanobots that swim like fish through water pipes, carrying materials to repair pipe damage. Fraden’s artificial neural network is just the beginning.

Read more at brandeis.edu

Image Credit:  BraneisNow

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2018-07-14T14:41:55+00:00

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