In this video clip, Jean-Baptiste David, who is a R&D Engineer at CEA-Leti, and Serge Gambarelli, who is a research director at CEA-IRIG and EPR spectroscopy expert, discuss the application areas where electron paramagnetic resonance (EPR) spectrometers could be useful.
Electron paramagnetic resonance (EPR) spectroscopy is an analytical technique used to detect and characterize species containing unpaired electrons.1 By exposing a sample to a strong magnetic field and microwave radiation, EPR spectrometers measure the energy absorbed when unpaired electrons transition between magnetic spin states, which produces a highly detailed spectral fingerprint.1
At the heart of an EPR spectrometer is an electromagnet that generates a controlled, uniform magnetic field. A microwave source irradiates the sample, and at a specific combination of field strength and frequency (that is, the resonance condition) unpaired electrons absorb energy.1 A detector records this absorption, generating a spectrum that reveals information about the electronic structure, concentration, and chemical environment of the paramagnetic species.1
EPR spectrometers are uniquely suited to a range of scientific and industrial fields, such as the following:
Recently, Jean-Baptiste David, who is a R&D Engineer at CEA-Leti, and Serge Gambarelli, who is a research director at CEA-IRIG and EPR spectroscopy expert. In the first part of our interview with David and Gambarelli, were part of a team that developed a new “EPR-on-a-chip” spectrometer that is designed to improve the technique’s capabilities.4 In this interview clip, they talk about the main applications that will benefit most from using the device they created.
