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| Posted: 04 Feb 2022 01:17 PM PST Researchers have developed an instrument to image the acoustic waves generated by micromechanical resonators over a wide range of frequencies and produce 'movies' of them with unprecedented detail. |
| The abyssal world: Last terra incognita of the Earth surface Posted: 04 Feb 2022 11:52 AM PST The first unified vision of the world ocean biodiversity, based on analysis of DNA sequences from the surface to deep-ocean sediments, unveils the rich and unknown life in the abyssal realm, the last terra incognita of the Earth surface. This collective effort was made possible by 15 international deep-sea expeditions. |
| Discovery unravels how atomic vibrations emerge in nanomaterials Posted: 04 Feb 2022 11:52 AM PST A hundred years of physics tells us that collective atomic vibrations, called phonons, can behave like particles or waves. When they hit an interface between two materials, they can bounce off like a tennis ball. If the materials are thin and repeating, as in a superlattice, the phonons can jump between successive materials. Now there is definitive, experimental proof that at the nanoscale, the notion of multiple thin materials with distinct vibrations no longer holds. If the materials are thin, their atoms arrange identically, so that their vibrations are similar and present everywhere. Such structural and vibrational coherency opens new avenues in materials design, which will lead to more energy efficient, low-power devices, novel material solutions to recycle and convert waste heat to electricity, and new ways to manipulate light with heat for advanced computing to power 6G wireless communication. |
| RNA ‘heroes’ can disarm bad-actor proteins in leukemia Posted: 04 Feb 2022 10:09 AM PST Scientists believe it may be possible to prevent DNA changes driven by two proteins highly active in leukemia and other cancers. They recently reported a new mechanistic target for drug development. |
| Making metal–halide perovskites useful in planar devices through a new hybrid structure Posted: 04 Feb 2022 10:09 AM PST Two of the main drawbacks of using tin (Sn)-based metal halide perovskites (MHPs) in thin-film transistors have been simultaneously solved by an innovative hybrid 2D/3D structure. New findings will help unlock the potential of environmentally benign Sn-based MHPs in CMOS technology, paving the way for flexible and printable electronic devices. |
| Too many disk galaxies than theory allows Posted: 04 Feb 2022 09:35 AM PST The Standard Model of Cosmology describes how the universe came into being according to the view of most physicists. Researchers have now studied the evolution of galaxies within this model, finding considerable discrepancies with actual observations. |
| Widely-used hormone drug associated with increased risk of benign brain tumor at high doses Posted: 04 Feb 2022 08:34 AM PST High doses of a widely-used drug used in the hormonal treatment of conditions such as excessive hair growth, early puberty, prostate cancer, are linked to an increased risk of meningioma -- the most common type of benign brain tumor, finds a new study of over 8-million patients. |
| New polymer fuel cells can operate at higher temperatures Posted: 03 Feb 2022 09:29 AM PST A new high-temperature polymer fuel cell that operates at 80-160 degrees Celsius, with a higher-rated power density than state-of-the-art fuel cells, solves the longstanding problem of overheating, one of the most significant technical barriers to using medium-and heavy-duty fuel cells in transportation vehicles such as trucks and buses. |
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