Researchers at Carnegie Mellon University have used nuclear resonance vibrational spectroscopy to probe the hydrogen bonds that modulate the chemical reactivity of enzymes, catalysts and biomimetic complexes. The technique could lead to the development of better catalysts for use in a wide range of fields. The findings were published as a 'Very Important Paper' in the Dec. 3 issue of Angewandte Chemie and featured on the journal's back cover.
A team at the HZB has improved the manufacturing process of photocathodes and can now provide photocathodes with high quantum efficiency for bERLinPro.
In the drive to find new ways to extend electronics beyond the use of silicon, physicists are experimenting with other properties of electrons, beyond charge. In work published today (Dec 7) in the journal Science, a team led by Penn State professor of physics Jun Zhu describes a way to manipulate electrons based on their energy in relation to momentum -- called 'valley degree of freedom.'
The future of the US Interstate Highway System is threatened by a persistent and growing backlog of structural and operational deficiencies and by various looming challenges, such as the progress of automated vehicles, developments in electric vehicles, and vulnerabilities due to climate change.
5, 10, or maybe 15? How many nanometers should nanoparticles of a catalyst be to optimize the course of the reaction? Researchers usually look for the answer by laborious, repetitive tests. At the Institute of Physical Chemistry of the Polish Academy of Sciences in Warsaw, a qualitatively new technique was developed to improve the process of such optimization in microfluidic systems. The size of the catalyst nanoparticles can now be changed interactively, during a continuous flow through the catalyst bed.
Graphene can determine whether cerebrospinal fluid comes from a person with ALS, MS or from someone without a neurodegenerative disease.
Working as part of an international group of toxicologists scientists of the Far Eastern Federal University (FEFU) have found that harmful nanoparticles are formed in the process of arc welding using the most common types of electrodes today. Suspending in the welding fume, these particles infiltrate the human body through the respiratory tract. An article about this is published in Scientific Reports.
Researchers at Osaka University produced composites consisting of alumina (Al2O3) ceramics and titanium (Ti), namely Al2O3/Ti composites. They designed a percolation structure for forming a continuous conduction pathway to disperse nanosized Ti particles into an Al2O3 matrix, optimizing the particle size of metallic Ti powder and sintering processes. They improved fracture toughness and electrical conductivity of Al2O3/Ti composites while simultaneously giving them photocatalytic ability.
In a step toward producing renewable engine fuels that are compatible with existing diesel fuel infrastructure, researchers report they can convert wet biowaste, such as swine manure and food scraps, into a fuel that can be blended with diesel and that shares diesel's combustion efficiency and emissions profile.
New research by environmental scientists at the University of Toronto suggests that the exterior of mobile phones could be a source of toxic chemicals, or at least an aggregate indicator of the chemicals to which people are exposed on a daily basis.