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Categories: Offbeat: Space, Physics: Optics

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Engineering: Nanotechnology Physics: General Physics: Optics
Published

Superlensing without a super lens: Physicists boost microscopes beyond limits      (via sciencedaily.com)     Original source 

Attempts to break the diffraction limit with 'super lenses' have all hit the hurdle of extreme visual losses. Now physicists have shown a new pathway to achieve superlensing with minimal losses, breaking through the diffraction limit by a factor of nearly four times. The key to their success was to remove the super lens altogether.

Physics: General Physics: Optics Physics: Quantum Computing Physics: Quantum Physics
Published

Physicists create new form of antenna for radio waves      (via sciencedaily.com)     Original source 

Physicists have used a small glass bulb containing an atomic vapor to demonstrate a new form of antenna for radio waves. The bulb was 'wired up' with laser beams and could therefore be placed far from any receiver electronics.

Physics: General Physics: Optics Physics: Quantum Physics
Published

Photonic crystals bend light as though it were under the influence of gravity      (via sciencedaily.com)     Original source 

Scientists have theoretically predicted that light can be bent under pseudogravity. A recent study by researchers using photonic crystals has demonstrated this phenomenon. This breakthrough has significant implications for optics, materials science, and the development of 6G communications.  

Physics: General Physics: Optics Physics: Quantum Computing Physics: Quantum Physics
Published

Simulations of 'backwards time travel' can improve scientific experiments      (via sciencedaily.com)     Original source 

Physicists have shown that simulating models of hypothetical time travel can solve experimental problems that appear impossible to solve using standard physics.

Computer Science: Encryption Physics: Optics
Published

New study unveils stretchable high-resolution user-interactive synesthesia displays for visual--acoustic encryption      (via sciencedaily.com)     Original source 

A research team has succeeded in developing a cutting-edge display using transfer-printing techniques, propelling the field of multifunctional displays into new realms of possibility.

Physics: General Physics: Optics Physics: Quantum Physics
Published

Widely tuneable terahertz lasers boost photo-induced superconductivity in K3C60      (via sciencedaily.com)     Original source 

Researchers have long been exploring the effect of using tailored laser drives to manipulate the properties of quantum materials away from equilibrium. One of the most striking demonstrations of these physics has been in unconventional superconductors, where signatures of enhanced electronic coherences and super-transport have been documented in the resulting non-equilibrium states. However, these phenomena have not yet been systematically studied or optimized, primarily due to the complexity of the experiments. Technological applications are therefore still far removed from reality. In a recent experiment, this same group of researchers discovered a far more efficient way to create a previously observed metastable, superconducting-like state in K3C60 using laser light.

Physics: Optics
Published

Enlightening insects: Morpho butterfly nanostructure inspires technology for bright, balanced lighting      (via sciencedaily.com)     Original source 

Researchers developed a nanostructured light diffuser that provides balanced lighting by diffracting blue and red light, and can be cleaned by simple rinsing with water. The diffuser consists of cheap materials and can be shaped with common tools. A protective glass coating maintains the diffuser's optical performance yet adds durability. This work might improve the visual performance of everyday lighting displays.

Computer Science: General Physics: Optics
Published

New easy-to-use optical chip can self-configure to perform various functions      (via sciencedaily.com)     Original source 

Researchers have developed an easy-to-use optical chip that can configure itself to achieve various functions. The positive real-valued matrix computation they have achieved gives the chip the potential to be used in applications requiring optical neural networks.

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Exploration Space: General Space: The Solar System
Published

'Starquakes' could explain mystery signals      (via sciencedaily.com)     Original source 

Fast radio bursts, or FRBs, are an astronomical mystery, with their exact cause and origins still unconfirmed. These intense bursts of radio energy are invisible to the human eye, but show up brightly on radio telescopes. Previous studies have noted broad similarities between the energy distribution of repeat FRBs, and that of earthquakes and solar flares. However, new research has looked at the time and energy of FRBs and found distinct differences between FRBs and solar flares, but several notable similarities between FRBs and earthquakes. This supports the theory that FRBs are caused by 'starquakes' on the surface of neutron stars. This discovery could help us better understand earthquakes, the behavior of high-density matter and aspects of nuclear physics.

Chemistry: Biochemistry Chemistry: Inorganic Chemistry Physics: General Physics: Optics
Published

Bringing out the color in zinc      (via sciencedaily.com)     Original source 

Researchers have synthesized a zinc complex based on two zinc centers that absorbs visible light. They demonstrated that this capability depends on the proximity of the zinc ions, where the complex responds to visible light when the zinc atoms are closer. This new property is expected to expand the utility of zinc, which already offers advantages including biological relevance, cost effectiveness, and low toxicity.

Chemistry: General Environmental: General Environmental: Water Geoscience: Environmental Issues Geoscience: Geochemistry Physics: Optics
Published

Titanium oxide material can remove toxic dyes from wastewater      (via sciencedaily.com)     Original source 

Discharged in large quantities by textile, cosmetic, ink, paper and other manufacturers, dyes carry high-toxicity and can bring potential carcinogens to wastewater. It’s a major concern for wastewater treatment — but researchers may have found a solution, using a tiny nanofilament.

Physics: Acoustics and Ultrasound Physics: Optics
Published

Medical imaging fails dark skin: Researchers fixed it      (via sciencedaily.com)     Original source 

A team found a way to deliver clear pictures of anyone's internal anatomy, no matter their skin tone.

Chemistry: Inorganic Chemistry Physics: Optics
Published

Groundbreaking study shows defects spreading through diamond faster than the speed of sound      (via sciencedaily.com)     Original source 

Settling a half century of debate, researchers have discovered that tiny linear defects can propagate through a material faster than sound waves do. These linear defects, or dislocations, are what give metals their strength and workability, but they can also make materials fail catastrophically ­– which is what happens every time you pop the pull tab on a can of soda. The fact that they can travel so fast gives scientists a new appreciation of the unusual types of damage they might do to a broad range of materials in extreme conditions.

Offbeat: General Offbeat: Space Space: Astrophysics Space: General Space: Structures and Features Space: The Solar System
Published

Scientists discover the highest energy gamma-rays ever from a pulsar      (via sciencedaily.com)     Original source 

Scientists have detected the highest energy gamma rays ever from a dead star called a pulsar. The energy of these gamma rays clocked in at 20 tera-electronvolts, or about ten trillion times the energy of visible light. This observation is hard to reconcile with the theory of the production of such pulsed gamma rays, as the international team reports.

Chemistry: Biochemistry Chemistry: Inorganic Chemistry Physics: Optics
Published

Physicists find evidence for magnetically bound excitons      (via sciencedaily.com)     Original source 

Physicists have experimentally detected how so-called Hubbard excitons form in real-time. 

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: General Space: Structures and Features Space: The Solar System
Published

Plot thickens in hunt for ninth planet      (via sciencedaily.com)     Original source 

A pair of theoretical physicists are reporting that the same observations inspiring the hunt for a ninth planet might instead be evidence within the solar system of a modified law of gravity originally developed to understand the rotation of galaxies.

Computer Science: General Physics: Optics
Published

New technology could reduce lag, improve reliability of online gaming, meetings      (via sciencedaily.com)     Original source 

Whether you’re battling foes in a virtual arena or collaborating with colleagues across the globe, lag-induced disruptions can be a major hindrance to seamless communication and immersive experiences. That’s why researchers have developed new technology to make data transfer over optical fiber communication faster and more efficient.

Offbeat: General Offbeat: Space Space: Astronomy Space: Exploration Space: General Space: The Solar System
Published

Large mound structures on Kuiper belt object Arrokoth may have common origin      (via sciencedaily.com)     Original source 

A new study posits that the large, approximately 5-kilometer-long mounds that dominate the appearance of the larger lobe of the pristine Kuiper Belt object Arrokoth are similar enough to suggest a common origin. The study suggests that these “building blocks” could guide further work on planetesimal formational models.

Physics: General Physics: Optics
Published

Lasers deflected using air      (via sciencedaily.com)     Original source 

Using a novel method, beams of laser light can be deflected using air alone. An invisible grating made only of air is not only immune to damage from the laser light, but it also preserves the original quality of the beam.

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Exploration Space: General
Published

Study quantifies satellite brightness, challenges ground-based astronomy      (via sciencedaily.com)     Original source 

The ability to have access to the Internet or use a mobile phone anywhere in the world is taken more and more for granted, but the brightness of Internet and telecommunications satellites that enable global communications networks could pose problems for ground-based astronomy. Scientists confirm that recently deployed satellites are as bright as stars seen by the unaided eye.