@article{oai:kanazawa-u.repo.nii.ac.jp:00008542,
 author = {Kitagawa, Akio},
 journal = {Journal of Sensors},
 month = {Jan},
 note = {The detection of radicals on a chip is demonstrated. The proposed method is based on electron spin resonance (ESR) spectroscopy and the measurement of high-frequency impedance of the microinductor fabricated on the chip. The measurement was by using a frequency sweep of approximately 100MHz. The ESR spectra of di(phenyl)-(2,4,6-trinitrophenyl)iminoazanium (DPPH) dropped on the microinductor which is fabricated with CMOS 350-nm technology were observed at room temperature. The volume of the DPPH ethanol solution was 2L, and the number of spins on the micro-inductor was estimated at about 10 1 4. The sensitivity is not higher than that of the standard ESR spectrometers. However, the result indicates the feasibility of a near field radical sensor in which the microinductor as a probe head and ESR signal processing circuit are integrated. Copyright © 2011 Akio Kitagawa.},
 title = {Electron spin resonance measurement with microinductor on chip},
 volume = {2011},
 year = {2011}
}