Category Chemistry/Nanotechnology

Innovations that made expensive things cheap

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TED talk on 9 video playlist for innovations that helped cut costs

A microscope that costs less than $1. A post-natal incubator for $25, $80 prosthetic knee that’s changing lives and much more. These TED Talks highlight exciting innovations that render formerly-expensive things affordable — whether it’s to save you money, or to save lives.

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Metamaterial Device allows Chameleon-like Behavior in the Infrared

This is an infrared image of metadevice composed of vanadium dioxide with gold patterned mesh. (Top) Device without any electric current showing the PSU cut from the pattern and reflective. (Middle) Device with 2.03 amps

This is an infrared image of metadevice composed of vanadium dioxide with gold patterned mesh. (Top) Device without any electric current showing the PSU cut from the pattern and reflective. (Middle) Device with 2.03 amps

An electric current will not only heat a hybrid metamaterial, but will also trigger it to change state and fade into the background like a chameleon in what may be the proof-of-concept of the first controllable metamaterial device, or metadevice. “Previous metamaterials work focused mainly on cloaking objects so they were invisible in the radio frequency or other specific frequencies,” said Douglas H. Werner, John L. and Genevieve H. McCain Chair Professor of electrical engineering, Penn State...

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Researchers invent ‘Perfect’ Soap molecule that is Better for the Environment, cleans in all conditions

The OFS soap molecules made from renewable sources could dramatically reduce the number of chemicals in cleaning products and their impact on the environment. Credit: Paul J. Dauenhauer, University of Minnesota

The OFS soap molecules made from renewable sources could dramatically reduce the number of chemicals in cleaning products and their impact on the environment. Credit: Paul J. Dauenhauer, University of Minnesota

A team has invented a new soap molecule made from renewable sources that could dramatically reduce the number of chemicals in cleaning products and their impact on the environment. The soap molecules also worked better than some conventional soaps in challenging conditions such as cold and hard water. The technology has been patented by the University of Minnesota and is licensed to the new Minnesota-based startup company Sironix Renewables.

“Our team created a soap molecule made from natural products, like soybeans, coconut and corn, that works better than regular soaps and is bett...

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3D-Printed Structures Shrink when Heated

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(a) Schematic of the multimaterial projection microstereolithography system. [(b) and (e)] Computer-aided designs and fabricated samples in [(c) and (f)] three-dimensional and [(d) and (g)] two-dimensional views of the fabricated unit cell and 2 by 2 lattice, respectively.

Counterintuitive ‘metamaterial’ may enable heat-resistant circuit boards. Almost all solid materials, from rubber and glass to granite and steel, inevitably expand when heated. Only in very rare instances do certain materials buck this thermodynamic trend and shrink with heat. Eg, cold water will contract when heated 0 – 4C, before expanding. Engineers from MIT, the University of Southern California, and elsewhere are now adding to this curious class of heat-shrinking materials...

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