Ultraviolet metasurfaces can discriminate the handedness of biomolecules with attomolar sensitivity
Researchers at LSU, in collaboration with Zuse Institute in Berlin, Germany, have developed an ultraviolet metasurface that discriminates between left- and right-handed amino acids with attomolar sensitivity......»»
UV lamps used for disinfection may impair indoor air quality
Using ultraviolet germicidal radiation (UVGI) to disinfect indoor spaces is a demonstrably effective way of deactivating various pathogens (including the SARS-CoV-2 coronavirus). It deactivates bacteria and viruses by exposing them to high-energy UV.....»»
Study finds that UV-emitting nail polish dryers damage DNA and cause mutations in cells
The ultraviolet nail polish drying devices used to cure gel manicures may pose more of a public health concern than previously thought. Researchers at the University of California San Diego have studied these ultraviolet (UV) light emitting devices,.....»»
Biomolecular analyses now have an expanded chemical toolkit
The 2022 Nobel Prize in Chemistry was awarded in part for what can be a quite difficult problem: precisely altering one aspect of biomolecules without affecting the rest of the cell. Now, in a study recently published in Organic Letters, researchers.....»»
Deep-ultraviolet birefringent hydrogel based on 2D cobalt-doped titanate
A birefringence based light modulator that works in the wavelength region of < 350 nm plays a vital role in DUV beam shaping, high density data storage, semiconductor micro-nano processing and photolithography. Actually, a series of DUV birefringent.....»»
Sunscreen-like chemicals found in fossil plants reveal UV radiation was involved in mass extinction events
New research has uncovered that pollen preserved in 250 million year old rocks contain compounds that function like sunscreen, these are produced by plants to protect them from harmful ultraviolet (UV-B) radiation. The findings suggests that a pulse.....»»
Researchers develop strain sensors for health, machine use
Researchers at North Carolina State University have developed a stretchable strain sensor that has an unprecedented combination of sensitivity and range, allowing it to detect even minor changes in strain with greater range of motion than previous te.....»»
Sizing up competition based on sensitivity to pain
Before any physical conflict, people assess their opponent's features to determine if the ideal tactical response is to fight, flee or attempt to negotiate......»»
Tipping points complicate the evaluation of complex climate models
An analysis by Robbin Bastiaansen and Anna von der Heydt, the University of Utrecht, the Netherlands; and Peter Ashwin, the University of Exeter, UK, indicates that it might remain difficult to accurately find the equilibrium climate sensitivity in c.....»»
Electrons on the run: On chirality, tunneling and light fields
Will an electron escaping a molecule through a quantum tunnel behave differently depending on the left- or right-handedness of the molecule?.....»»
High-speed, high-sensitivity terahertz detection using graphene transistor
On the electromagnetic spectrum, which comprises everything from radio waves to X-rays and gamma rays, there exists a deadzone where conventional electronic devices can hardly operate. This deadzone is occupied by terahertz waves......»»
Optoelectronic resonator increases the sensitivity of an electron pulse detector
Researchers from the University of Tsukuba have shown how adding a tiny resonator structure to an ultrafast electron pulse detector reduced the intensity of terahertz radiation required to characterize the pulse duration......»»
Hydrometeorological factors study: Don"t forget moisture in climate-carbon cycle responses
The land carbon turnover times shape the response of the land surface to changes in climate. Therefore, understanding and quantifying the carbon turnover's temperature sensitivity is key in the context of climate change......»»
Germicidal UV lamps: A trade-off between disinfection and air quality
When winter chill strikes, people stay indoors more often, giving airborne pathogens—such as SARS-CoV-2 and influenza—prime opportunities to spread. Germicidal ultraviolet (GUV) lamps can help disinfect circulating air, but their UVC wavelengths.....»»
A novel interfacial regulated broadband photocatalyst
Extending the light absorption from ultraviolet (UV) to near-infrared (NIR) region and improving photocarrier separation efficiency of photocatalysts are of vital importance for solar-driven H2 evolution......»»
Researchers boost accuracy of home-based continuous glucose monitoring
Home-based continuous glucose monitoring for diabetics up to now has had to trade ease of use, low cost, and portability for a somewhat lower sensitivity—and thus accuracy—compared to similar systems in clinics or hospitals. A team of researchers.....»»
Examining the limits of nonlocal wide-field-of-view metalenses
Metalenses, compact lenses made with metasurfaces, have the potential to enable thinner, lighter, cheaper, and better imaging systems for a wide range of applications where miniaturization is critical (e.g., for mobile devices, medical imaging, and a.....»»
New analysis approach could help boost sensitivity of large telescopes
Some of the largest and most sophisticated telescopes ever made are under construction at the Simons Observatory in Northern Chile. They are designed to measure cosmic microwave background—electromagnetic radiation left over from the formation of t.....»»
Study explores link between shark nose shape, size and sensitivity of smell
Sharks have reputations as "super smellers" that use olfaction to detect odors related to finding prey and mates, communicating with their own species and avoiding predators. Their olfactory system is unique because it is separate from the respirator.....»»
Flexible strain sensor enabled by carbon nanofibers can "read lips"
Wearable, flexible strain sensors unobtrusively monitor tiny vibrations of human skin in real time and with great accuracy, thanks to innovative fabrication techniques using composite materials. High sensitivity and a wide working range are key param.....»»
Scientists demonstrate world"s first continuous-wave lasing of deep-ultraviolet laser diode at room temperature
A research group led by 2014 Nobel laureate Hiroshi Amano at Nagoya University's Institute of Materials and Systems for Sustainability (IMaSS) in central Japan, in collaboration with Asahi Kasei Corporation, has successfully conducted the world's fir.....»»