April 27, 2007 4:25 PM PDT

Scientist proposes adhesive Spider-Man suit

As moviegoers prepare for the splashy Spider-Man 3 to hit U.S. theaters next week, an Italian scientist has quietly formulated a plan for a "smart" suit that could one day turn those fans into wall-climbing superheroes, too.

In an upcoming paper, Nicola Pugno, a professor of structural engineering at the Polytechnic University in Turin, Italy, discusses formulas for fashioning carbon nanotubes into superadhesive gloves and boots that could be used to create a Spider-Man-like suit in the near future. He also outlines a theory for using carbon nanotubes to create large invisible cables that could act as human-strength cobwebs.

The designs for the materials are modeled from the adhesive properties of the gecko, a tropical lizard whose sticky feet can scale trees.

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Human-made designs are increasing inspired by nature in a field known as biomimicry.

"A replication of the characteristics of the gecko or spider feet would enable the development of a self-cleaning, superadhesive and releasable hierarchical material and, with the conjunction of large invisible cables, of a preliminary Spider-Man suit," Pugno wrote in his paper, which will be published in an upcoming edition of the Journal of Physics: Condensed Matter.

Scientists have long studied the gravity-defying gecko for potential applications in the human world. (The practice of studying the natural world for industrial applications is generally called biomimicry.) Researchers at the University of California at Berkeley, for example, have built an array of microfibers inspired by the gecko's feet that can keep objects from sliding down near-vertical surfaces. Other universities are working on materials to remove ice from windows based on the same principles.

What's special about the gecko feet is that they're covered with millions of tiny hairs. When these hairs brush against a surface, the molecules at the tip of the hairs adhere to the surface through van der Waals forces, a bond that forms between two molecules when they are close to each other. Although the bond between each hair and the surface is weak, it becomes strong when multiplied over millions of hairs.

Through their feet, geckos get both friction, which keeps them from sliding down, and adhesion, which makes it difficult to pull them off a surface. The challenge in creating nanotube materials strong enough to hold the weight of a human is that at such a large scope, the materials can either bunch up and become brittle; or they can become elastic, collapsing under their own weight, according to the paper.

Pugno proposed the use of "branched long carbon nanotubes...with a number of hierarchical levels sufficient to activate" a superadhesive suit.

"Mimicking nature, thanks to carbon nanotube-based technology, we suggest the feasibility of large invisible cables, as well as of self-cleaning, superadhesive and releasable hierarchical smart materials," Pugno wrote. "We found that a man can be supported by a transparent cable with a cross section of 1 cm squared and feasibly, with spider material gloves and boots, could remain attached even to a ceiling: a preliminary step towards a Spider-Man suit."

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9 comments

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Big deal- old news
Hundreds of thousands(at least) have worn a sticky suit. Called being tarred and feathered.
Real life, not cartoon and fake camera shots.
Posted by bobbydi (51 comments )
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Eh?
What in the world are you talking about? A suit like this would be helpful to many people, police, firemen, and the military just to name a few.

How did you get being tarred and feathered from this article? Smoking too much of the good stuff?
Posted by tanis143 (122 comments )
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Much more useful
I propose a SuperMan suit...
With X-Ray vision ;-)
Posted by GGGlen (491 comments )
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Spiderman suit with x-ray vision
X-ray vision by both the male and female Spiderman suit wearers.
Posted by bobbydi (51 comments )
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Cue morew lawsuits...
"I climbed up to the ceiling in my Spiderman suit and the ceiling couldn't hold my weight so I fell to the floor and injured myself, the defendant should have known that the existence of Spiderman suits made it possible for people to climb to ceilings and should have upgraded their ceiling to support me".

I can just see such a lawsuit being filed by another one of the clueless people who think the whole world should adjust to their desires rather than employ a modicum of common sense.
Posted by aabcdefghij987654321 (1721 comments )
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Oops
"How come you walking around with a chair stuck to your butt?"

"Spiderman fabric."

Hey! We can do away with seat belts!
Posted by Phillep_H (497 comments )
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