Employing a computer simulation, physicists Maximilian Liebetreu and Christos Likos have shown a unique dynamic behavior of cyclic polymers. Their motion can be distinguished into phases, and the scientists were able to observe the so-called "inflation phase" for the first time. During this new phase, they observed swelling and self-stabilization of the polymers. The results have been published in the first volume of new journal Nature Communications Materials.
Safe and environmentally-friendly hydrogen gas on demand could be on the horizon following a new 'hydrogenation' chemical process in development at The City College of New York. Led by Mahesh K. Lakshman, the research uniquely bypasses the need for an external source of hydrogen gas to accomplish a wide range of hydrogenations. It appears as an inside cover feature in the 2020 issue #1 of journal 'Advanced Synthesis and Catalysis.'
The University of Tokyo Institute of Industrial Science researchers modeled the role of hydrodynamics in liquid-liquid transitions of a single-component system. They showed that domain formation is related to the density upon transition, which can be influenced by hydrodynamics. The findings could provide a basis for further investigations into shear flow systems, as well as a means of optimizing industrial applications such as chemical production.
Photo-acid generators (PAG) use light to generate acids as catalysts for various chemical reactions. No previous PAG can directly produce Lewis acids, however. Nara Institute of Science and Technology scientists succeed and show a quantum yield much higher than other PAGs along with a new set of chemical reactions from the acid.
A new way of making bone-replacement materials that allows for cells to grow around and inside them has been developed by researchers at the University of Birmingham.
Water is a familiar substance that is present virtually everywhere. The properties of the first few layers of water molecules in contact with the surface of materials (called 'surface water') are especially important in materials science. In a recent study led by Prof Takahiro Yamamoto of Tokyo University of Science, scientists employed statistical data analysis tools to reveal what happens to water molecules on top of graphene.
Ligand-protected metal clusters in assembled structures show peculiar properties, which are different from those of corresponding bulk metals. These properties have promising applications in a wide variety of fields, especially nanotechnology and materials science. In a recent study, researchers from Tokyo University of Science reveal the main factors that influence how assembled structures are formed from metal clusters.
By conveniently and painlessly collecting data, wearable sensors create many new possibilities for keeping tabs on the body. In order to work, these devices need to stay next to the skin. In a study described in ACS Omega, researchers tweaked a widely used polymer to create a potential new adhesive to keep these sensors in place.
Titanium oxide found in coal smog and ash can cause lung damage in mice after a single exposure, with long-term damage occurring in just six weeks.
For decades, carbon nanotubes held great promise of developments in the field of electronics and more. But one drawback to realizing these innovations has been the difficulty of incorporating additional materials into nanotubes. For the first time, researchers have grown crystals of various materials uniformly onto the surface of carbon nanotubes. They hope these modified structures will exhibit functions useful in electronic, chemical or other applications.