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3D printing? Old hat. Now, 4D printing!

3D printing? Old hat. Now, 4D printing!

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http://www.cnn.com/2013/04/10/tech/innovation/orig-ideas-4-d-printing/index.html?iid=article_sidebar

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Originally posted by sonhouse
http://www.cnn.com/2013/04/10/tech/innovation/orig-ideas-4-d-printing/index.html?iid=article_sidebar
I thought they would print out time. Now that would have been
impressive? 😀

But seriously, it's fascinating. I wonder what those materials really are and
how they responds with the given environment?

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Originally posted by C Hess
I thought they would print out time. Now that would have been
impressive? 😀

But seriously, it's fascinating. I wonder what those materials really are and
how they responds with the given environment?
My guess is they are a combination of hydrophylic and hydrophobic materials that introduce strain when submerged in water.