NIST Develops Ultra-Sensitive Magnetic and Electric Field Sensors
NIST scientists have created highly sensitive magnetic and electric field sensors using atom-based technologies. These sensors can measure electromagnetic fields with unprecedented precision and don’t require calibration by external devices. They utilize vapors of atoms like cesium or rubidium confined in small cells, which respond to electric and magnetic fields. The sensors’ responses are measured using laser light, providing measurements traceable to the International System of Units (SI).
Key Features:
– Ultra-miniaturized and low-power
– Dependable readings without external calibration
– Measurements traceable to SI units
– Utilizes familiar MEMS fabrication techniques
– Potential applications in biomedicine, wireless communications, and space exploration
The sensors are made using standard microelectronics and MEMS fabrication techniques, making them cost-effective and easy to commercialize. This breakthrough could enable new applications in various fields while providing consistent, reliable measurements worldwide.
Source: https://www.nist.gov/noac/technology/magnetic-and-electric-fields
Keywords: Traceability, Atom-based, Metrology, Sensitivity, Calibration
