Checking the sensor performance
Researchers tested the sensor using a technique called optically detected magnetic resonance (ODMR) in a fiber-based setup. ODMR is a technique used to measure tiny magnetic fields using light and microwaves.
It works by detecting how special defects in materials, like NV centers in diamond, respond to magnetic fields. The team achieved highly sensitive current detection during the ODMR testing. The diamond sensor could measure small currents as low as 10 milliamperes over different time durations, ranging between 10 milliseconds and 100 seconds.
When it comes to EV batteries, their performance and lifespan depend on precise monitoring of how electricity flows in and out. The diamond quantum sensors can detect tiny fluctuations in the current and help maintain battery health at optimal levels.