Search results for sound absorption

Earth Sciences Mar 11, 2024

Satellite measurements show that global carbon emissions are still rising

According to the Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report (AR6), human activities have significantly impacted the planet. As global greenhouse gas emissions (mainly carbon dioxide) have continued ...

Optics & Photonics Mar 7, 2024

Ultraviolet spectroscopy: A leap in precision and accuracy at extremely low light levels

Ultraviolet spectroscopy plays a critical role in the study of electronic transitions in atoms and rovibronic transitions in molecules. These studies are essential for tests of fundamental physics, quantum-electrodynamics ...

Cell & Microbiology Feb 5, 2024

New technology unscrambles the chatter of microbes

Researchers from University of California San Diego, as part of a large collaboration with scientists around the world, have developed a new search tool to help researchers better understand the metabolism of microorganisms. ...

Planetary Sciences Feb 2, 2024

Neptune-like exoplanets can be cloudy or clear: New findings suggest the reason why

The study of "exoplanets," the sci-fi-sounding name for all planets in the cosmos beyond our own solar system, is a fairly new field. Mainly, exoplanet researchers like those in the ExoLab at the University of Kansas use ...

Bio & Medicine Jan 22, 2024

Fingerprinting biomolecules with the help of sound

A team of researchers from the Institute for Optoelectronic Systems and Microtechnology at Universidad Politécnica de Madrid (UPM) has designed a biosensor capable of identifying proteins and peptides in quantities as low ...

Optics & Photonics Jan 11, 2024

Review covers optical aspects of quantitative photoacoustic tomography

Quantitative photoacoustic tomography (QPAT) is a medical imaging technique that combines laser-induced photoacoustic signals and ultrasound detection to create detailed three-dimensional images of biological tissues. The ...

Optics & Photonics Jan 3, 2024

Non-toxic quantum dots pave the way towards CMOS shortwave infrared image sensors for consumer electronics

Invisible to our eyes, shortwave infrared (SWIR) light can enable unprecedented reliability, function and performance in high-volume, computer vision first applications in service robotics, automotive and consumer electronics ...

Nanophysics Dec 4, 2023

Researchers show excited electrons straightening the skewed lattice of perovskite nanocrystals

Researchers from ETH Zurich, Empa and Stanford have taken snapshots of the crystal structure of perovskite nanocrystals as it was deformed by excited electrons. To their surprise, the deformation straightened out the skewed ...

Nanomaterials Sep 20, 2023

Scientists unravel the chemical mechanism behind silica-coated nanodiamonds

Coating something rare—tiny shards of diamond—with the main ingredient in sand might sound unusual, but the end result turns out to have a number of valuable applications. The trick is, nobody knows for sure how the two ...

Plants & Animals Sep 20, 2023

Dolphins, seals and whales managed by the US are highly vulnerable to climate change, study finds

According to a study published in PLOS ONE, 72% of cetacean and pinniped stocks managed under U.S. jurisdiction are highly or very highly vulnerable to climate change. The research was led by Matthew D. Lettrich at NOAA Fisheries, ...

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