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ScienceDaily: Computers & Math News |
| 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. |
| 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. |
| Researchers resurrect and improve a technique for detecting transistor defects Posted: 04 Feb 2022 08:33 AM PST Researchers have revived and improved a once-reliable technique to identify and count defects in transistors, the building blocks of modern electronic devices such as smartphones and computers. |
| Liquid metals, surface patterns, and the romance of the three kingdoms Posted: 04 Feb 2022 06:31 AM PST Diverging and converging patterns forming on the surface of solidifying liquid metals resemble plotlines in a complex historical novel, in a new international study. The cyclic patterns observed are rare, and had not been observed in solidification structures prior to this. Better understanding and control of fundamental phase transitions and pattern formation could see future liquid metal applications in plasmonic sensing and high-efficiency electronics and optics. |
| Like peanut butter? This algorithm has a hunch as to what you'll buy next Posted: 03 Feb 2022 03:52 PM PST New research brings a methodology called tensor decomposition -- used by scientists to find patterns in massive volumes of data -- into the world of online shopping to recommend complementary products more carefully tailored to customer preferences. |
| NFTs offer new method to control personal health information Posted: 03 Feb 2022 01:11 PM PST A team of scholars in ethics, law and informatics wrote one of the first commentaries on how NFTs could be repurposed for the healthcare industry. |
| Neuroscientists use deep learning model to simulate brain topography Posted: 03 Feb 2022 01:11 PM PST A more accurate model of the visual system may help neuroscientists and clinicians develop better treatments for alexia, prosopagnosia and agnosia. |
| The brain’s secret to life-long learning can now come as hardware for artificial intelligence Posted: 03 Feb 2022 01:05 PM PST As companies use more and more data to improve how AI recognizes images, learns languages and carries out other complex tasks, a recent article shows a way that computer chips could dynamically rewire themselves to take in new data like the brain does, helping AI to keep learning over time. |
| Observation of quantum transport at room temperature in a 2.8-nanometer CNT transistor Posted: 03 Feb 2022 09:30 AM PST A research team has developed an in situ transmission electron microscopy (TEM) technique that can be used to precisely manipulate individual molecular structures. Using this technique, the team succeeded in fabricating carbon nanotube (CNT) intramolecular transistors by locally altering the CNT's helical structure, thereby making a portion of it to undergo a metal-to-semiconductor transition in a controlled manner. |
| Researchers find new way to amplify trustworthy news content on social media without shielding bias Posted: 03 Feb 2022 09:28 AM PST Social media sites continue to amplify misinformation and conspiracy theories. To address this concern, an interdisciplinary team of computer scientists, physicists and social scientists has found a solution to ensure social media users are exposed to more reliable news sources. |
| Missing the bar: How people misinterpret data in bar graphs Posted: 03 Feb 2022 07:25 AM PST Thanks to their visual simplicity, bar graphs are popular tools for representing data. But do we really understand how to read them? New research has found that bar graphs are frequently misunderstood. The study demonstrates that people who view exactly the same graph often walk away with completely different understandings of the facts it represents. |
| People prefer interacting with female robots in hotels, study finds Posted: 03 Feb 2022 05:35 AM PST People are more comfortable talking to female rather than male robots working in service roles in hotels, according to new research. The study, which surveyed about 170 people on hypothetical service robot scenarios, also found that the preference was stronger when the robots were described as having more human features. |
| The puzzle of the 'lost' angular momentum Posted: 02 Feb 2022 08:17 AM PST A research team succeeds in solving a decade-old physical puzzle: the question of the fate of angular momentum during the ultrafast demagnetization of nickel crystals by laser light. |
| New super-conductors could take data beyond zeroes and ones Posted: 01 Feb 2022 01:10 PM PST Smartphones may one day look just as obsolete as flip phones thanks to spintronics, an incipient field of research that uses electrons' spins to transfer electronic signals. Researchers now report a keystone achievement: the development of a conducting system that controls the spin of electrons and transmits a spin current over long distances, without the need for the ultra-cold temperatures required by typical conductors. |
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