Bioprotein creates two-dimensional stretchable materials

Credit: Porco Dorson, Pennsylvania Nature creates layered materials like bone and mother-of-pearl that become less sensitive to imperfections as they grow. Using biomimetic proteins engraved on squid ring teeth, the researchers have now created two-dimensional composites that are both fracture-resistant and highly stretchable. “Researchers have rarely reported this interface property of bone and nacre because … Read more

How did Earth avoid a Martian-like fate? Ancient rocks bear clues

depiction of the Earth, first without an inner core; second, with an inner core that began to grow, about 550 million years ago; Third, with an outer and deeper inner core, about 450 million years ago. University of Rochester researchers used palaeomagnetism to determine these two key dates in the history of the inner core, … Read more

Smaller, stronger magnets could improve devices that harness the power of sun and star fusion

PPPL chief engineer Yuhu Zhai with photo-high-temperature superconducting magnets, which can improve the performance of tokamak spherical fusion devices. Credit: Kiran Sudarsanan/PPPL Communications Bureau Researchers at the US Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) have found a way to build powerful magnets smaller than before, helping to design and build machines that … Read more

Theoretical model suggests that the salinity of Enceladus’ oceans may be correct to sustain life

Heat sources/sinks and salinity/temperature effects were considered in our experiments on Enceladus. (a) Primary heat sources and heat flow, including heating due to tidal dissipation in ice ℋice The silicate coreessenceheat flow from the ocean to the ice ℋocn, and the space-transfer heat loss ℋcond. Ocean heat transfer is shown by the horizontal arrow. (b) … Read more

Physicists have developed a way to predict the composition of dark matter

An artist’s translation of the nucleosynthesis of the Big Bang, the early period of the universe in which “p” protons and “n” neutrons combine to form light elements. The presence of dark matter χ changes how much of each element will form. Credit: Image Courtesy of Cara Giovannitti/NYU A new analysis offers an innovative way … Read more