A hot carrier solar cell includes the absorption layer, the extraction layer, an energy selective contact, and the actual contact. Experiments showed the presence of a barrier inhibiting carrier extraction, as indicated between the absorption layer and the extraction layer, which are both n-type. Credit: Journal of Photonics for Energy (2024). DOI: 10.1117/1.JPE.15.012502 Hot carrier … Read more
Credit: Pixabay/CC0 Public Domain Large amounts of the food we produce do not end up in our stomachs, but in landfills, sewers, or elsewhere. According to the UN, in 2022, this was the fate of 1.05 billion tons of food, which ended up as food waste—corresponding to approximately 132 kg per capita in the world. … Read more
Credit: Unsplash/CC0 Public Domain The huge and growing toll bottled water is taking on human and planetary health warrants an urgent rethink of its use as 1 million bottles are bought every minute around the globe, with that figure set to rise further still amid escalating demand, warn population health experts in a commentary published … Read more
The paramotorist team in the Peruvian desert. Left to Right: Márcio Aita Júnior, Mike Campbell-Jones and Senderson Laurido. Credit: Mike Campbell-Jones In an innovative paper published today in the journal Plants, People, Planet, scientists from the Royal Botanic Gardens, Kew, Huarango Nature and paramotorists from Forest Air, highlight the exciting potential of paramotoring as a … Read more
An artistic rendering depicts direct writing using ORNL’s synthescope, a novel microscopy technique, to continuously insert tin atoms into graphene, opening possibilities for materials fabrication atom-by-atom. Credit: Ondrej Dyck/ORNL, U.S. Dept. of Energy A new technology to continuously place individual atoms exactly where they are needed could lead to new materials for devices that address … Read more
Credit: Pixabay/CC0 Public Domain “Stranger churches”—Protestant congregations that welcomed speakers of certain languages other than English—in early modern London had “eyes everywhere” to hear, spread and dispel gossip in multiple languages, according to new research. The Elizabethan era saw large numbers of migrants coming to England, many of whom were Protestants fleeing religious persecution and … Read more
Former President Barack Obama. Credit: White House/Pete Souza Following Barack Obama’s reelection as U.S. president in 2012, the mental health of college-educated Black men improved significantly, while those who didn’t attend college reported worse mental health, according to new research from Rice University sociologists. “Four More Years! Or So What? The Mental Health Significance of … Read more
Yeast cells diffuse compounds to promote the growth of other cells in the vicinity. Credits: Shin Ohsawa/FMI To grow and survive, tiny organisms such as yeast must sometimes adapt their nutrient sources in response to changes in the environment. FMI researchers have now found that yeast cells communicate with each other to use less favorable … Read more
FIU Ph.D. student Cindy Gonzalez prepares to release a tagged bonnethead off the coast of Belize. Credit: Florida International University A hammerhead shark species discovered by FIU scientists finally has a name and its namesake is the late Paul G. Allen, philanthropist and cofounder of Microsoft. The existence of the new species, Sphyrna alleni, was … Read more
Credit: Unsplash/CC0 Public Domain With a dramatic scoop of an excavator, water from the Sacramento-San Joaquin River Delta surged onto a 3,400-acre stretch of land this week for the the first time in a century. This ceremonial levee breach at Lookout Slough, north of Rio Vista, on Wednesday was attended by nearly 200 spectators who … Read more
