For galaxies forming stars, it’s not about how much gas there is but where you find it
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Updates every hour. Last Updated: 9-Sep-2025 18:11 ET (9-Sep-2025 22:11 GMT/UTC)
A metamaterial is a composite material that exhibits unique properties due to its structure, and now researchers have used one featuring a small sawtooth pattern on its surface to move and position objects underwater without touching them directly. Adjacent speakers exert different forces on the material based on how the sound waves reflect off it, and by carefully targeting the floating or submerged metamaterial with precise sound waves, researchers can push and rotate the object attached to it.
A team of researchers led by Thomas Richards at the University of Oxford, UK, studied the properties of membranes to understand how these cellular structures influenced the chemistry of life on earth as it began. The researchers published their findings on May 20th in the open-access journal PLOS Biology.
Purdue University researchers have developed a metamaterial comprising of carefully arranged plates that trap air within and act as guides for the sound. With their metamaterial in place, sound from monopile installation can be reduced by 40 decibels, an improvement over the 25-decibel reduction of other methods. The material is modular and foldable, making its transport and deployment easy and inexpensive. Junfei Li will present on the work at the 188th ASA Meeting.
Twenty-three University of Texas at Arlington students have been selected for the McNair Scholars Program, a competitive Department of Education program that prepares undergraduates for academic research careers.
“The McNair Scholars Program has proven to be a great way for undergraduate students considering a career in academia to see firsthand how scientific research is conducted and the real-world impacts that can come from it,” said Kayunta Johnson-Winters, director of undergraduate research at UTA and an associate professor of chemistry and biochemistry.
New research could improve the efficiency of electrochemical carbon-dioxide capture and release by six times and cut costs by at least 20 percent. MIT researchers added nanoscale filtering membranes to a carbon-capture system, separating the ions that carry out the capture and release steps, and enabling both steps to proceed more efficiently.