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Categories: Paleontology: Early Mammals and Birds, Physics: Optics

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The question of where the boundary between classical and quantum physics lies is one of the longest-standing pursuits of modern scientific research and in new research, scientists demonstrate a novel platform that could help us find an answer.

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A 30 million year-old fossil whale may not be the heaviest animal of all time after all, according to a new analysis by paleontologists. The new analysis puts Perucetus colossus back in the same weight range as modern whales and smaller than the largest blue whales ever recorded.

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For a long time, it was thought that amorphous solids do not selectively absorb light because of their disordered atomic structure. A new study disproves this theory and shows that amorphous solids actually exhibit dichroism, meaning that they selectively absorb light of different polarizations.

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Recycling facilities collect glass and mercury from thrown away fluorescent bulbs, but discarded lighting could also supply rare-earth metals for reuse. The 17 metals referred to as rare earths aren't all widely available and aren't easily extracted with existing recycling methods. Now, researchers have found a simpler way to collect slightly magnetic particles that contain rare-earth metals from spent fluorescent bulbs.

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Researchers have developed a microporous covalent organic framework with dense donor-acceptor lattices and engineered linkages for the efficient and clean production of hydrogen peroxide through the photosynthesis process with water and air.

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Molecules that are induced by light to rotate bulky groups around central bonds could be developed into photo-activated bioactive systems, molecular switches, and more.

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New technologies aim to produce high-purity synthetic crystals that become excellent semiconductors when doped with impurities as electron donors or acceptors of other elements. Researchers have now determined the magnitude of the spin-orbit interaction in acceptor-bound excitons in a semiconductor. They broke through the energy resolution limit of conventional luminescence measurements by directly observing the fine structure of bound excitons in boron-doped blue diamond, using optical absorption.

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The simplest possible molecule H2+ was one of the very first molecules to form in the cosmos. This makes it significant for astrophysics, but also an important object of research for fundamental physics. It is difficult to study in experiments. However, a team of physicists has now succeeded in measuring the vibrations of the molecule with a laser.

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Researchers have developed a simulator that enables artificial visual observations for research into the visual prosthesis. This open source tool is available to researchers and offers those who are interested insight into the future application.

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Researchers have successfully filmed the operations of extremely fast electronic circuitry in an electron microscope at a bandwidth of tens of terahertz.

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Nuclear physicists have shattered a nearly 30-year-old record for precision in electron beam polarimetry. The groundbreaking result sets the stage for high-profile experiments that could open the door to new physics discoveries.

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Researchers have shown that expensive aberration-corrected microscopes are no longer required to achieve record-breaking microscopic resolution.

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A new record for electrical energy generation from CIGS solar cells has been reached. Scientists have achieved a 23.64 percent efficiency.

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Scientists have used a new method to determine the characteristics of optical, i.e. light-based, quantum states. For the first time, they are using certain photon detectors -- devices that can detect individual light particles -- for so-called homodyne detection. The ability to characterize optical quantum states makes the method an essential tool for quantum information processing.

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The evolutionary success of the first large predators on land was driven by their need to improve as killers, researchers suggest.

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Researchers have unveiled a novel concept termed 'supercritical coupling' that enables several folds increase in photon upconversion efficiency. This discovery not only challenges existing paradigms, but also opens a new direction in the control of light emission.

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Physicists explore different AI learning methods, which can lead to smarter and more efficient models.

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A team of researchers has developed a wireless device, powered by light, that can be implanted to regulate cardiovascular or neural activity in the body. The feather-light membranes, thinner than a human hair, can be inserted with minimally invasive surgery and contain no moving parts.

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Scientists unveil metasurface technology, allowing for angle-dependent holograms.

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A collaborative project has made a breakthrough in enhancing the speed and resolution of wide-field quantum sensing, leading to new opportunities in scientific research and practical applications.