Get a whiff of this! A new research partnership at the National Institute of Standards and Technology (NIST) is using beams of chilled neutrons to determine how aroma compounds are embedded into assortments of other chemicals that carry and release fragrances in perfumes, detergents and other scented products.
Securing the elusive structural details could lead to what might be termed an “odor of magnitude” improvement in models for predicting interactions between fragrances and their molecular carriers. The cooperative project involves researchers from International Flavors & Fragrances (IFF), based in New York City, and NIST.
Besides contributing in other ways to product performance, carrier molecules band together and enwrap fragrance ingredients. IFF Associate Research Fellow Chii-Fen Wang likens the structural arrangement to an onion. “We want to determine where the fragrance compound is located in the onion—in the center, for example, or in a particular layer—and how the structure of the compound changes,” she explains.
Mark Bello | NIST
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Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.
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An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.
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A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.
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Researchers from the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science, the Italian Space Agency (ASI), and the Instituto Geofisico--Escuela Politecnica Nacional (IGEPN) of Ecuador, showed an increasing volcanic danger on Cotopaxi in Ecuador using a powerful technique known as Interferometric Synthetic Aperture Radar (InSAR).
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