Molecular clock analysis shows bacteria used oxygen long before widespread photosynthesis
Peer-Reviewed Publication
Updates every hour. Last Updated: 9-Jul-2025 12:10 ET (9-Jul-2025 16:10 GMT/UTC)
In twisted moiré photonic crystals, how the layers twist and overlap can change how the material interact with light. By changing the twist angle and the spacing between layers, these materials can be fine-tuned to control and manipulate different aspects of light simultaneously — meaning the multiple optical components typically needed to simultaneous measure light’s phase, polarization, and wavelength could be replaced with one device. Now researchers have developed an on-chip twisted moiré photonic crystal sensor that uses MEMS technology to control the gap and angle between the crystal layers in real time. The sensor can detect and collect detailed polarization and wavelength information simultaneously.
Mosquitoes have been transmitting the West Nile virus to humans in the United States for over 25 years, but we still don’t know precisely how the virus cycles through these pests and the other animals they bite. A federally funded project aims to help pin down the process by using mathematical models to analyze how factors like temperature, light pollution, and bird and mosquito abundance affect West Nile virus transmission. The ultimate goal is to advise health departments of the best time of year to kill the bugs.