Air quality models have long failed to accurately predict atmospheric levels of secondary organic aerosol, which comprises a substantial fraction of the fine particulate matter in cities. But CMU researchers have found a missing source of emissions that may explain roughly half of that SOA, closing much of the model-measurement gap.
A research project at the University of Cordoba (Spain) studied the behavior of a highway made from recycled materials in situ from nearby demolished homes for 10 years.
A stacked nanocarbon antenna makes a rare earth element shine 5 times more brightly than previous designs, with applications in molecular light-emitting devices.
Researchers at Osaka University synthesized novel OLEDs based on efficient ring-shaped molecular macrocycles. This work may help lead to sensitive, yet inexpensive, chemical detectors.
Organic self-assembled monolayers (SAMs) have been around for over forty years. The most widely used form is based on thiols, bound to a metal surface. However, exposure of these monolayers to air will lead to breakdown within a single day. University of Groningen scientists have now created SAMs using buckyballs functionalized with 'tails' of ethylene glycol. These have all the properties of thiol SAMs but remain chemically unchanged for several weeks when exposed to air.
Scientists at the University of Tokyo and Kozo Keikaku Engineering Inc. have shown how to combine the forecasts of a collection of suboptimal 'delay embedding' predictors for time series data. This work may help improve the forecasting of floods, stock market gyrations, spatio-temporal brain dynamics, and ecological resource fluctuations
Organic molecules with atoms of the semi-metal boron are important building blocks for synthesis products to produce drugs and agricultural chemicals. However, the conversion of substances commonly used in industry often results in the loss of the valuable boron unit, which can replace another atom in a molecule. Chemists at Münster University now introduce carbon-carbon couplings in which the boron atom is retained. The study has been published in the journal Chem.
Solar-to-fuel conversion offers a promising technology to solve energy problems, yet device performance could be limited by undesired sunlight absorption. Researchers show copper thiocyanate can assist hole transport in oxide photoelectrodes and enable a 4.55% solar-to-hydrogen efficiency in tandem devices.
Atrazine is one of the most widely used pesticides in North America. Researchers at the Institut National de la Recherche Scientifique (INRS) have developed a new method to degrade it that combines a new nanostructured material and sunlight.
Concerns about the scarcity of lithium and other materials necessary in the now-ubiquitous lithium-ion batteries have recently driven many researchers to look for alternatives, such as sodium and potassium. Prof Shinichi Komaba from Tokyo University of Science, Japan, and his team have worked for over a decade on this topic. In his latest review article, he extensively discusses his findings on the recent advances, promises, and limitations of potassium-ion batteries.