Physical Sciences

Kyle Lampe, an assistant professor of chemical engineering in the University of Virginia’s School of Engineering and Applied Science, is growing cells in three-dimensional hydrogels, an environment closer than petri dishes to how cells grow on their own. He can control the hydrogel’s softness or stiffness, and by raising the cells in a three-dimensional solution, the cells react more closely to how they would in nature

The folks at the American Chemical Society's Reactions video series check out the science of the Avengers' superpowers in advance of the latest film's release.

In 2013 James Hone, Wang Fong-Jen Professor of Mechanical Engineering at Columbia Engineering, and colleagues at Columbia demonstrated that they could dramatically improve the performance of graphene—highly conducting two-dimensional (2D) carbon—by encapsulating it in boron nitride (BN), an insulating material with a similar layered structure. In work published this week in the Advance Online Publication on Nature Nanotechnology’s website, researchers at Columbia Engineering, Harvard, Cornell, University of Minnesota, Yonsei University in Korea, Danish Technical University, and the Japanese National Institute of Materials Science have shown that the performance of another 2D material—molybdenum disulfide (MoS2)—can be similarly improved by BN-encapsulation.

Karl A. Gschneidner and fellow scientists at the U.S. Department of Energy’s Ames Laboratory have created a new magnetic alloy that is an alternative to traditional rare-earth permanent magnets.

Thermal imaging, microscopy and ultra-trace sensing could take a quantum leap with a technique developed by researchers at the Department of Energy’s Oak Ridge National Laboratory.

For centuries, humans have sought to learn whether life exists beyond Earth. That answer is closer than ever to fulfillment, and an Arizona State University team is working on a key part of that quest with NASA’s backing.

Light can come in many frequencies, only a small fraction of which can be seen by humans. Between the invisible low-frequency radio waves used by cell phones and the high frequencies associated with infrared light lies a fairly wide swath of the electromagnetic spectrum occupied by what are called terahertz, or sometimes submillimeter, waves. Exploitation of these waves could lead to many new applications in fields ranging from medical imaging to astronomy, but terahertz waves have proven tricky to produce and study in the laboratory. Now, Caltech chemists have created a device that generates and detects terahertz waves over a wide spectral range with extreme precision, allowing it to be used as an unparalleled tool for measuring terahertz waves.

Research by scientists at the University of Manchester has revealed that the color of light has a major impact on how our body clock measures the time of day.












