Transparent Metamaterial for Energy-efficient Regulation in Building can Clean Itself like a Lotus Leaf

Innovative material for sustainable building
Cooling, light-transmissive, and glare-free: the new material combines several unique properties. Credit: Gan Huang, KIT

Researchers at the Karlsruhe Institute of Technology (KIT) introduce a polymer-based material with unique properties in the journal Nature Communications. This material allows sunlight to enter, maintains a more comfortable indoor climate without additional energy, and cleans itself like a lotus leaf. The new development could replace glass components in walls and roofs in the future. The research team has successfully tested the material in outdoor tests on the KIT campus.

Maximizing natural light in buildings is popular and can save on energy costs. However, traditional glass roofs and walls also present problems such as glare, lack of privacy, and overheating...

Read More

The Earth’s Changing, Irregular Magnetic Field is Causing Headaches for Polar Navigation

The Earth's changing, irregular magnetic field is causing headaches for polar navigation
Changes in the Earth’s global magnetic field over six months in 2014 as measured by the European Space Agency’s three-satellite Swarm constellation. The left map shows the average magnetic field and the right shows changes in magnetic field strength during that period. Credit: European Space Agency/Technical University of Denmark (ESA/DTU Space).

The Earth’s liquid molten outer core, composed mostly of iron and nickel, exerts an electromagnetic field extending from the north and south pole that protects the planet from harmful solar particle radiation.

Fluctuations in the strength of Earth’s magnetic field—caused by daily changes in solar wind structure and intermittent solar storms—can impact the use of geomagnetic field models which are essential for navigation in satellites, plan...

Read More

First 3D-Printed, Defect-free Tungsten Components Withstand Extreme Temperatures

First 3D-printed, defect-free tungsten components withstand extreme temperatures
ORNL researchers used electron-beam additive manufacturing to 3D-print the first complex, defect-free tungsten parts with complex geometries. Research was performed at DOE’s Manufacturing Demonstration Facility at ORNL. The MDF, supported by DOE’s Advanced Materials and Manufacturing Technologies Office, is a nationwide consortium of collaborators working to innovate, inspire and catalyze the transformation of U.S. manufacturing. Credit: Michaela Bluedorn/ORNL, U.S. Dept. of Energy

Researchers at Oak Ridge National Laboratory used additive manufacturing to produce the first defect-free complex tungsten parts for use in extreme environments. The accomplishment could have positive implications for clean-energy technologies such as fusion energy.

Tungsten has the highest melting po...

Read More

Recent and Extensive Volcanism discovered on Venus

Recent and extensive volcanism discovered on Venus
This computer-generated 3D model of Venus’ surface shows the volcano Sif Mons, which is exhibiting signs of ongoing activity. Using data from NASA’s Magellan mission, Italian researchers detected evidence of an eruption while the spacecraft orbited the planet in the early 1990s. Credit: NASA/JPL

A new analysis of data collected on Venus more than 30 years ago suggests the planet may currently be volcanically active.

A research group from Italy led by David Sulcanese of the Università d’Annunzio in Pescara, Italy, has used data from a radar mapping of Venus’s surface taken in the early 1990s to search for volcanic lava flow, finding it in two regions.

The discovery suggests that volcanic activity may be currently active and more widespread than was previously thought, support...

Read More