Physicist develops new silicone rubber

Feb 28, 2013 by Fariss Samarrai
Physicist Lou Bloomfield with Vistik, a new type of silicone rubber he is developing.

(Phys.org)—If anything bothers University of Virginia physicist Lou Bloomfield, it's a wobbly table. So much so that he actually invented a material to eliminate the problem. The material, a type of silicone rubber that is both rigid and fluid – a "viscoelastic" solid – can be placed under a table leg where it conforms to the shape of the leg bottom and the floor surface, perfectly filling the gap.

It turns out, the material can do a lot more than that.

It may have applications as a packaging tape, as a shoe insole, as padding for , as a handle material for canes, crutches and sporting goods, and to make an assortment of toys, from balls to who knows what.

It's a bit like memory foam, but with strength and bounce-ability.

"I was looking to come up with something cheap and simple to solve an everyday problem – wobbly tables – and ended up finding an amazing new material," Bloomfield said. "I wanted something that could hold its shape while also being elastic."

What he invented – he calls it "Vistik" – is the result of thousands of experiments conducted over about four years. Bloomfield, a professor of in the College of Arts & Sciences, tweaked his formula numerous times and came up with several different iterations of the material – modifications for a variety of potential uses.

Currently, MeadWestvaco Corporation, a Richmond packaging company, is investigating ways to use Vistik as a resealable adhesive for packages. Bloomfield imagines it as someday being a replacement for the plastic zip strips used on plastic storage bags. Sheets of Vistik bind together on contact, but separate easily when pulled apart. Bloomfield calls it the "molecular equivalent of Velcro."

An interesting characteristic of the material is that while it sticks to itself, it does not stick to other and objects, and, dust and dirt can be brushed off or washed away, allowing the material to easily re-adhere.

Vistik also regains its original shape after being compressed or imprinted. For example, a Vistik ball – which bounces like a super ball because of its elasticity – is soft enough that it can be squeezed into a flat disk that will slowly return to its round shape once the pressure is off.

That compliant, adaptive characteristic likely makes it an ideal material as a shoe insole or contact point for canes, and prosthetics.

"It takes an imprint, conforming to the shape of, for example, a foot, but then returns to its original shape, which can be flat or any we design," Bloomfield said. "The material can even take imprints as fine as fingerprints." He said he would like to someday see Vistik used as an insole for every shoe.

The material is so adaptive, Bloomfield said, it can be made bouncy or not so bouncy, and it tolerates a range of temperatures and is chemically inert.

"It's tasteless too," he added, "I can tell you that."

Beyond its potential practical uses, Bloomfield imagines that Vistik someday could be made into toys, such as balls with different bounce rates like baseballs or tennis balls.

Still, Bloomfield's favorite applications for Vistik involve human health and comfort.

"Imagine if your new shoes adapted to your feet to give you that old-shoe feel just seconds after you put them on," he said.

Explore further: Plug n' Play protein crystals

Related Stories

Research helps hospitals with energy improvement

Feb 18, 2013

As health care professions and patient needs grow nationally, hospitals are looking for ways to be more efficient. Wichita State University industrial and manufacturing engineering professors Michael Overcash and Janet Twomey ...

Can metals remember their shape at nanoscale, too?

Nov 08, 2011

University of Constance physicists Daniel Mutter and Peter Nielaba have visualized changes in shape memory materials down to the nanometric scale in an article about to be published in the European Physical Journal B.

Recommended for you

Team pioneers strategy for creating new materials

12 hours ago

Making something new is never easy. Scientists constantly theorize about new materials, but when the material is manufactured it doesn't always work as expected. To create a new strategy for designing materials, ...

Plug n' Play protein crystals

17 hours ago

Almost a hundred years ago in 1929 Linus Pauling presented the famous Pauling's Rules to describe the principles governing the structure of complex ionic crystals. These rules essentially describe how the ...

Breaking benzene

Aug 27, 2014

Aromatic compounds are found widely in natural resources such as petroleum and biomass, and breaking the carbon-carbon bonds in these compounds plays an important role in the production of fuels and valuable ...

User comments : 2

Adjust slider to filter visible comments by rank

Display comments: newest first

VendicarE
1 / 5 (3) Feb 28, 2013
But the real question is if it can be used for teledildonics?

Faux news wants to know.
packrat
3 / 5 (2) Feb 28, 2013
Sounds like a possibility for no-flat foam inserts for bike tires that might have a closer feel to normal air filled inner tubes if made in one of the harder formulations.