A new graphene sensor can detect COVID-19 and flu in 10 seconds and could be used to test for other respiratory infections as well. The sensor is made of graphene, a single layer of carbon atoms that is highly sensitive to the presence of viruses. It works by binding to antibodies that are specific to the COVID-19 and flu viruses. When a sample from an infected person is placed on the sensor, the antibodies bind to the viruses, causing a change in the electrical current. The sensor is much faster and more sensitive than traditional COVID-19 tests, which can take minutes or hours to produce results. It could be used to quickly diagnose respiratory infections in healthcare settings, schools, and other places where people gather. The sensor is still in the early stages of development, but the researchers are working to improve its performance and make it available for widespread use.
Researchers at Tampere University in Finland have discovered a new immune response mechanism specific to exposure to nanoparticles. This mechanism is common to multiple species, from humans to simpler creatures, and it suggests that different species have adapted over time to this type of exposure. The findings of this study, published in the journal Nature […]
New tunable metasurface can act as axicon or metalens, with potential applications in biological imaging, microscopic measurement, laser fabrication, optical manipulation, multi-plane imaging, depth estimation, and optical data storage. The metasurface is made of titanium dioxide (TiO2) and can be actuated by rotating it between two layers. When light is incident on the metasurface, the […]
Vertical graphene nanowalls (VGNWs) are a promising class of nanomaterials with exceptional properties, including high specific surface area, excellent electrical conductivity, scalability, and compatibility with transition metal compounds. These attributes position VGNWs as a compelling choice for various applications, such as energy storage, catalysis, and sensing. Plasma-enhanced chemical vapor deposition (PECVD) is a versatile technique […]