Picotesla magnetometry of microwave fields with diamond sensors

Science Advances (2022). DOI: 10.1126/sciadv.abq8158″ width=”800″ height=”530″/> Basic principle of continuous heterodyne detection. (A) Simplified energy levels of NV centers. The ∣±1〉 states can be polarized to ∣0〉 state with a rate of Γp. A resonant microwave addresses the ∣0〉 ↔ ∣1〉 spin transition. (B) Evolution of the NV center driven by microwaves of different … Read more

Researchers use first-of-its-kind tracking sensors to study billfish

Tagged Sailfish. Credit: Nova Southeastern University Guy Harvey Research Institute Blue marlin (one of the largest fish) and sailfish (one of the fastest fish) provide some of the most prized fights in the sportfishing world, making catching them with rod and reel one of those “once in a lifetime” experiences. Their distinctive elongated front-end bill … Read more

Nanoengineers boost signals from fluorescent sensors

Credit: Unsplash/CC0 Public Domain Fluorescent sensors, which can be used to label and image a wide variety of molecules, offering a unique glimpse inside living cells. However, they typically can only be used in cells grown in a lab dish or in tissues close to the surface of the body, because their signal is lost … Read more

Unexpected light behavior may be harnessed to improve optical communications and sensors

The NIST team directed light into an ultrathin layer of silicon nitride etched with grooves to create a diffraction grating. If the separation between the grooves and the wavelength of light is carefully chosen, the intensity of light declines much more slowly, linearly rather than exponentially. Credit: S. Kelley/NIST Shine a flashlight into a murky … Read more