Researchers Find Ways to Image, Characterize Unique New Material

Graphene can come from graphite, but borophene? There’s no such thing as borite. Unlike its carbon cousin, two-dimensional borophene can’t be reduced from a larger natural form. Bulk boron is usually only found in combination with other elements, and is certainly not layered,

Design and Validation of Multilayered Thermal Emitter Using Machine Learning

Scientists designed a multilayered metamaterial that realizes ultra-narrowband wavelength-selective thermal emission by combining the machine learning (Bayesian optimization) and thermal emission properties calculations (electromagnetic calculation). The joint team then experimentally fabricated the designed metamaterial and verified the performance. These results may facilitate

Superinsulating Aerogel Resists Mechanical and Thermal Shocks

Aerogels are exceptionally lightweight, composite materials containing more than 99 percent air. They can withstand high temperatures and are resistant to many chemicals. Most aerogels studied so far, however, are made from ceramic materials, such as silica, alumina and silicon carbide, and

Charting a Map for Determining Negative Thermal Expansion

Most materials exhibit some degree of thermal expansion – that is, they expand when heated and shrink when cooled. Concrete structures are designed with joints that allow for this expansion and contraction, to prevent cracking and structural failure. Some materials, however, exhibit

DARPA to Host Hypersonic Thermal Management Material Design Program

The Defense Advanced Research Projects Agency will conduct a Proposers Day on Jan. 22 in Arlington, Va., to discuss a new program that aims to build and demonstrate structures designed to address the thermal challenge associated with hypersonic vehicles’ leading edges. “For decades people