Porous polymer coatings dynamically control light and heat

Engineers have developed dynamic porous polymer coatings that enable inexpensive and scalable ways to control light and heat in buildings. They took advantage of the optical switchability of PPCs in the solar wavelengths to regulate solar heating and daylighting, and extended the concept to thermal infrared wavelengths to modulate heat radiated by objects.

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Remarkable story of shock wave physics in post-World War II America

Physicists predicted the Hubble Space Telescope would see a rising vapor plume as the Shoemaker-Levy 9 comet crashed into the far side of Jupiter in 1994. And sure enough, the plume produced by the impact matched their computational analysis.

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Bioprinting: Living cells in a 3D printer

A high-resolution bioprinting process has been developed: Cells can now be embedded in a 3D matrix printed with micrometer precision — at a printing speed of one meter per second, orders of magnitude faster than previously possible. Tissue growth and the behavior of cells can be controlled and investigated particularly well by embedding the cells in a delicate 3D framework. This is achieved using so called 'bioprinting' techniques.

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Giving robots a faster grasp

Engineers have found a way to significantly speed up the planning process required for a robot to adjust its grasp on an object by pushing that object against a stationary surface. Whereas traditional algorithms would require tens of minutes for planning out a sequence of motions, the new team's approach shaves this planning process down to less than a second.

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3-D printed coral could help endangered reefs

Threats to coral reefs are everywhere — rising water temperatures, ocean acidification, coral bleaching, fishing and other human activities. But new research shows that 3-D printed coral can provide a structural starter kit for reef organisms and can become part of the landscape as fish and coral build their homes around the artificial coral.

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Are some urban settings riskier for traffic injury or death? We know less than you think

How risky is travel in the US? It gets tricky. Despite a lot of research on the dangers of traffic injury and death, there's a lack of clarity on the role of the built environment (roadway designs and adjoining development) and its risk effects. Before we can know how risky a given built environment is, we have to know how many people are traveling there, and in many cases, for pedestrians and cyclists, this data is not available.

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