Excitons are electron-hole pairs in semiconductors that are electrostatically bound by strong Coulombic interactions. In ultrathin 2D semiconductors that are a few atoms thick (typically ~0.7 nm), the decreased z-dimension ...
Condensed Matter
Jun 21, 2023
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10
Monsoons are seasonal climate conditions resulting from changes in wind that bring extreme drought or rain, depending upon the time of year. Those occurring in south Asia and east Asia are affected by a combination of atmospheric ...
China's Yanliao Biota, an assembly of fossils preserved in northeastern China dating from the Middle to Late Jurassic (174 to 145 million years ago), offers an important window into the evolution of vertebrates. With exceptional ...
Researchers from the U.S. and Switzerland, including Senckenberg scientist and first author Dr. Adrienne Jochum, have described the first fossil Carychium land snails from Florida. The rock layer containing the snail fossils, ...
Paleontology & Fossils
Jun 16, 2023
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123
The evolution of Earth's climate contains many components. And new research has shown just how critical the ozone layer is to the surface temperature of the Earth. Without an ozone layer, our planet would be 3.5 Kelvin cooler.
Planetary Sciences
Jun 14, 2023
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25
The term meta means a concept of transcendence or surpassing, and when applied to materials, metamaterials encompass artificially engineered substances that exhibit properties not naturally found in the environment. Metasurfaces, ...
Nanophysics
Jun 14, 2023
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84
Some very special cows are walking around the stables in Foulum, a little city outside Viborg in Denmark. The cows have been implanted with a so-called fistula. This is a kind of window leading directly into the stomach of ...
Plants & Animals
Jun 13, 2023
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9
According to a new study published in Advances in Atmospheric Sciences, the ozone isn't healing as quickly as expected, leading to higher levels of surface ultraviolet (UV) radiation in recent years.
Environment
Jun 1, 2023
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56
Ever since the discovery of the two-dimensional form of graphite (called graphene) almost twenty years ago, interest in 2D materials and their special physical properties has skyrocketed. Famously, graphene was produced by ...
Nanomaterials
Jun 1, 2023
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184
Methyl chloride (CH3Cl) is one of the most common chlorine-based gases in Earth's atmosphere. Along with related chemicals, it depletes the ozone layer, exposing life on the planet to more of the sun's ultraviolet radiation. ...
Earth Sciences
May 31, 2023
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