Professor Christer Johansson is a senior expert at RISE Research Institutes of Sweden. He received an M.Sc. in physics at Umeå University in 1988 and a Ph.D. in physics at Chalmers University of Technology and Göteborg University in 1993 in the field of magnetic nanoparticles and magnetic liquids. Since 2000, he has worked at RISE with magnetism including magnetic nanoparticles, magnetic materials, magnetic analysis, magnetic modeling, AC susceptometry, magnetic sensor systems, impedance spectroscopy, magnetostrictive, magnetoelastic resonance and piezoelectric sensors, force sensors and general sensor applications. In 2015, he was appointed Adjunct Professor in Physics at the Microtechnology and Nanoscience Department, Chalmers University of Technology. He has published over 160 papers (h index = 41) in peer-reviewed scientific journals in the field of magnetic nanoparticles, magnetic analysis, and piezoelectric and general sensor systems. He is also co-inventor of over 17 patents.