A filter made from polymer nanothreads blew three kinds of commercial masks out of the water by capturing 99.9% of coronavirus aerosols in an experiment. The study compared the effectiveness of surgical and cotton masks, a neck gaiter, and electrospun nanofiber membranes. The cotton mask and neck gaiter only removed about 45%-73% of the aerosols. The surgical mask did much better, removing 98% of coronavirus aerosols. But the nanofiber filter removed almost all.
Researchers of Peter the Great St. Petersburg Polytechnic University (SPbPU) developed a new approach to determine the best electrode materials composition for Solid-state lithium-ion batteries. The research group of St. Petersburg Polytechnic University developed a method to determine the electrochemical capacity of each component of the "nickel-cobalt oxide" system.
A new software tool developed by Earlham Institute researchers will help bioinformaticians improve the quality and accuracy of their biological data, and avoid mis-assemblies. The fast, lightweight, user-friendly tool visualises genome assemblies and gene alignments from the latest next generation sequencing technologies.
A research team from the National University of Singapore (NUS) and Japan's Tohoku University (TU) has developed a technology that uses tiny smart devices known as spin-torque oscillators to harvest and convert wireless radio frequencies into energy to power small electronics.
In an international cooperation with partners from industry and research, physicists from the University of Vienna, together with Thorlabs, the National Institute of Standards and Technology (NIST), and the University of Kansas, have now succeeded for the first time in demonstrating high-performance laser mirrors in the sensing-relevant mid-infrared wavelength range that absorb less than ten out of a million photons.
Scientists in Korea have found a new way to control the alignment state of magnetic atoms in an antiferromagnetic material, showing promise for the development of tiny sensors and memory devices. Researchers at the Daegu Gyeongbuk Institute of Science and Technology (DGIST) describe their new approach featuring a controllable exchange bias effect, which enables the asymmetric magnetic actions of devices comprised of complex combination structure of different types of magnetic materials, in the journal Acta Materialia.
Collaboration between two NCCR MARVEL labs has identified a new type of defect as the most common source of disorder in on-surface synthesized graphene nanoribbons (GNRs). The researchers identified the atomic structure of these "bite" defects and investigated their effect on quantum electronic transport in two different types of GNR. They also established guidelines for minimizing the detrimental impact of these defects and proposed defective zigzag-edged nanoribbons as suitable platforms for certain applications in spintronics.
For decades, researchers have theorized that optical rectennas could sit on everything from bakery ovens to dirigibles flying high above Earth to harvest waste heat and turn it into electricity. But to date, those goals have remained elusive. Now, engineers have unveiled the most efficient optical rectennas yet.
So far, only a handful of siRNA, or other RNA interference-based therapeutics that can shut down harmful genes to keep viruses from spreading have been approved. Chemical engineering researchers in the Cockrell School of Engineering have created several nanoparticles to help solve the problem of getting the siRNA into the body and guiding it to the target.
Oscillatory and rotational motions of different parts are combined in a newly conceived artificial molecule, paving the way for the construction of devices capable of transforming and transmitting movements on the nanometer scale. The nanodevice was designed, synthesized and tested by a team of researchers of the University of Bologna