light sensing cells

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A very interesting video about cephalopod skin, with great images!

It also explains an experience designed to determine how much of the color changes is controlled by the brain or by the skin itself.

From the video:

While it’s still early to say, one possibility is that the skin itself is able to see and stimulate the chromatophores locally, bypassing the brain. A recent study at the Marine Biological Laboratory in Woods Hole, Mass., indicates that cuttlefish skin has light-sensing cells.

Txch This Week: Control A Living Avatar And 3-D-Printed Face Transplants

by Jared Kershner

This week on Txchnologist, engineers have reported that they created a surface that can repel all liquids, like a Teflon pan on steroids. Made of a structured silicon dioxide, the coating is covered with microscopic nailheads that hold up any liquid while distributing its weight through many contact points. Liquids sit on a cushion that is 95 percent air, and the fluid’s surface tension holds it together to roll over the surface without wetting it.

Drexel University materials scientists say they have developed a conductive, moldable clay-like substance that can store significant amounts of energy. The material, called MXene, consists of titanium carbide particles that keep it plastic to moderate pressure and allow it to be molded into virtually any shape. The substance could be a component in the next generation of batteries and supercapacitors.

MIT engineers have developed a new computer model that allows them to design the most complex 3-D shapes ever created out of DNA, including intricate rings, bowls, and geometric cages. The program works by stapling together snips of DNA in predictable ways to create a host of geometries. The information in the DNA, instead of being used for replication or other biological functions, is used as building materials to piece together these nanoscopic assemblies.

Now we’re bringing you the news and trends we’ve been following this week in the world of science, technology and innovation.

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