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IMAGE: Schematic diagram of a nickel-based 3D nanohelix electrocatalyst system doped with oxophilic transition metal atoms.
Incorporation of oxophilic transition metals into the nickel-based nanohelixes with abundant surface active sites optimizes the. view more
Credit: POSTECH
To resolve the energy crisis and environmental issues, research to move away from fossil fuels and convert to eco-friendly and sustainable hydrogen energy is well underway around the world. Recently, a team of researchers at POSTECH has proposed a way to efficiently produce hydrogen fuel via water-electrolysis using inexpensive and readily available nickel as an electrocatalyst, greenlighting the era of hydrogen economy.
A POSTECH research team led by Professor Jong Kyu Kim and Ph.D. candidate Jaerim Kim of the Department of Materials Science and Engineering and a team led by Professor Jeong Woo Han and Ph.D. candidate Hyeonjung Jung of the Department of Chemical Engineering have join
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EUGENE, Ore. Jan. 12, 2020 Insufficient interactions with academic advisors and peers and financial problems are derailing career aspirations of women and minority groups pursing graduate degrees in the nation s highest-funded chemistry programs.
The challenges, tied to systemic gender and racial inequities, emerged from a deep analysis of data compiled in a 2013 American Chemical Society survey of 1,375 chemistry graduate students in the top 100 university chemistry departments in terms of research funding reported by the National Science Foundation.
The findings are detailed in a study, led by University of Oregon researchers, publishing this week in the online ahead of print in the
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IMAGE: When a person sings, the vibrations create waves in the tissue near the vocal tract called shear waves. If a tumor is present in the thyroid, the elasticity of its. view more
Credit: Steve Beuve
WASHINGTON, January 12, 2021 Singing may be the next-generation, noninvasive approach to determining the health of a patient s thyroid.
Typically, a fine needle is used to detect the presence of a tumor in the thyroid, which most commonly affects children and younger women. However, this method can only detect about 5% of thyroid cancers.
Researchers from Université de Tours, Centre Hospitalier Universitaire de Dijon-Bourgogne, and Université Bourgogne Franche-Comté suggest a simpler approach: singing. They demonstrate the technique in the journal
Credit: University of Tsukuba
Tsukuba, Japan - Proton-exchange membrane (PEM) fuel cells are an energy storage technology that will help lower the environmental footprint of transportation. These fuel cells make use of a chemical reaction known as oxygen reduction. This reaction needs a low-cost catalyst for widespread commercial applications. Nitrogen-doped carbon is one such catalyst, but the chemical details of how nitrogen doping works are rather controversial. Such knowledge is important to improving the function of PEM fuel cells in future technologies.
In a study recently published in
Angewandte Chemie International Edition, researchers from the University of Tsukuba reported chemical details for optimizing the oxygen reduction reaction in PEM fuel cells in acidic conditions. This configuration helps the carbon catalyst adsorb oxygen in a way that enables the fuel cell to function.
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IMAGE: In the proposed method, carrier lifetime measurements are made in the region were the excitation and probe lasers intersect, which progressively varies as the position of the sample is changed. view more
Credit: Photo courtesy: Masashi Kato from Nagoya Institute of Technology
Silicon carbide (SiC), a versatile and resistant material that exists in multiple crystalline forms, has attracted much attention thanks to its unique electronic properties. From its use in the first LED devices, to its applications in high-voltage devices with low power losses, SiC displays exceptional semiconductor behavior. So far, the operating voltages for unipolar SiC devices are below 3.3 kV. Though useful for the electronic systems of cars, trains, and home appliances, unipolar SiC-based devices cannot be used in power generation and distribution systems, which operate at voltages above 10 kV.