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Comments on Soft Robot Powered By Shape Memory Alloy Spokes
A remarkable new kind of robotic locomotion has emerged in the form of small "robots" that are constructed in the shape of a wheel. The spokes are made of a shape memory alloy; the rim of the wheel is made of an elastic polymer. (Read the complete story)

"couldn't it be extended to a sphere? A ball rolling in any direction ..."
(coucou 7/4/2004 11:26:30 AM)
"Yes, that is the end result of taking three of the soft robots and intertwining them to create a "ball." It might be a lot harder to program, though."
(Bill Christensen 7/4/2004 5:46:01 PM)
"I tried to sell this idea to a major UK arms company, and they said it would never work and, even if it did, they couldn't see a use for it!"
(soapy 7/9/2004 7:27:35 AM)
"I just heard about smart materials and shape memory alloy. Now, I got inspiration from this concept."
(R.S.Nakandhrakumar 10/9/2004 9:51:26 PM)
"To answer coucou's question from last summer, it turns out that there is such a thing as a spherical robot. However, it moves not by deforming its surface, but by moving an internal weight. See Rotundus."
(Bill Christensen 1/14/2005 1:50:18 PM)
"Dear Sir, Could you tell me which firms currently offer shape memory polymers? What are possible substitute products for these polymers in the future? Yours faithfully, Darshit My email id is darshit_dr@yahoo.co.in "
(Darshit R T 9/9/2006 12:08:05 AM)

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