UltraViolet
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Related Articles from SNS
Record ultraviolet quasar wind reaches 30% light speed near supermassive black hole
Record ultraviolet quasar wind reaches 30% light speed near supermassive black hole Gaby Clark Scientific Editor Robert Egan Associate Editor A team led by York University researchers has discovered the fastest wind near a supermassive black hole ever found at ultraviolet wavelengths, driven by the disk of matter (quasar) surrounding the black hole. "This quasar has a black hole of 1.7 billion times the mass of the sun. What's not typical is that it has gas moving towards us at 30% of the...
TransTac: Visuo-Tactile Modality Transition via Ultraviolet-Encoded Transparent Elastomers
arXiv:2606.04477v1 Announce Type: new Abstract: Vision-based tactile sensors (VBTS) recover high-resolution contact geometry but typically rely on opaque elastomer layers that prevent visual transparency, while RGB-D cameras provide global depth perception yet degrade significantly at close range. To address this limitation, we present TransTac, a transparent ultraviolet (UV)-encoded binocular VBTS that integrates visual observation and marker-based tactile reconstruction within a single...
First observation of the $\gamma$-ray beam production by the backward Compton scattering of reflected synchrotron radiation in the extreme ultraviolet range
Announce Type: replace Abstract: Compton scattering of photons off high-energy electrons is a fundamental quantum mechanical process widely utilized to produce a $\gamma$-ray beam for scientific research. Instead of injecting laser light into a storage ring as a conventional way, we have developed an innovative method to achieve drastically higher energies approaching the ring energy by the backward Compton scattering of extreme ultraviolet (EUV) light. In this method, $92$ $\mathrm{eV}$...
40% boost in extreme ultraviolet conversion efficiency via simultaneous dual-beam 2-{\mu}m laser irradiation
Announce Type: new Abstract: Scaling extreme ultraviolet (EUV) source power for next-generation lithography demands higher conversion efficiency (CE) at reduced per-pulse energies. We demonstrated a 40% CE enhancement by simultaneous dual-beam irradiation of a planar Sn target with a 2090-nm, 20-ns Ho:YAG laser. Single-beam irradiation at 40 mJ yielded an EUV CE of 2.6%; splitting the same total energy equally into two beams of 20 mJ each - at identical peak intensity - raised the EUV CE to...
These record-breaking black hole winds could create a category 79 hurricane on Earth
These record-breaking black hole winds could create a category 79 hurricane on Earth "This wind is unlike anything on Earth." Astronomers have discovered a distant quasar — or active nucleus of a galaxy — that's powered by a feeding supermassive black hole blasting out winds at record-breaking speeds of 30% the speed of light, around 201 million miles (323 million kilometers) per hour. This is the fastest black hole wind seen specifically in ultraviolet wavelengths.
Dormant black hole revives in under three years, brightening 10-fold in nearby galaxy
June 2, 2026 report Dormant black hole revives in under three years, brightening 10-fold in nearby galaxy Shreejaya Karantha Author Sadie Harley Scientific Editor Robert Egan Associate Editor Astronomers monitoring a nearby active galaxy for six years have watched its supermassive black hole dramatically wake up, brightening by a factor of 10 across ultraviolet and X-ray wavelengths. The paper outlining the study was posted to the preprint server arXiv on May 18.
Portable UV spectrometer can detect air pollutants across 2.5 km with high precision
Portable UV spectrometer can detect air pollutants across 2.5 km with high precision Sadie Harley Scientific Editor Robert Egan Associate Editor Birgitta Schultze-Bernhardt and her team at the Institute of Experimental Physics at Graz University of Technology (TU Graz) have developed a new type of UV dual-comb spectrometer that detects gaseous air pollutants with unrivaled accuracy and sensitivity. Using ultraviolet double laser light, the device measures the concentration of harmful gases...
Resolving the Blueshift in Calculations of the EUV Spectrum of Multiply Charged Tin Ions
arXiv:2606.04868v1 Announce Type: new Abstract: We report ab initio relativistic calculations on the complex open shell Sn$^{12+}$ highly charged ion, a prototypical plasma ion relevant for extreme ultraviolet (EUV) nanolithography. Previous calculations of EUV emissivity in tin plasmas consistently generate a spectrum in which the region of peak emissivity is blueshifted relative to experiment. By optimising our numerical methods to take full advantage of modern, high-performance CPU...
How Turkey Hacked the Hair Transplant Industry
The astounding growth of the hair-transplant industry in Turkey is not just a medical tourism success story; it’s also a tale of “hacked” medical equipment and algorithmic craftsmanship. From a biological and evolutionary perspective, human hair is often viewed as an unremarkable mass of keratin that still plays some important functions—protecting our scalps from the sun’s harmful ultraviolet rays and regulating our body temperatures—but, for the most part, is no longer essential to our...
Optimization of EUV output by experimentally validated radiation-hydrodynamic simulations across a broad laser parameter space
arXiv:2606.05948v1 Announce Type: new Abstract: Practical requirements such as improving wall-plug efficiency and reducing system footprint have become increasingly important with the introduction of extreme ultraviolet (EUV) lithography into high-volume semiconductor manufacturing. These demands motivate the development of solid-state mid-infrared lasers as alternatives to current CO2 lasers. Systematic exploration of laser-to-EUV conversion efficiency (EUV-CE) over a broad parameter space...