MAGNETIC PROPERTY MEASUREMENT DEVICE USING ION CURRENT

摘要

The present invention provides a device to analyze the magnetic characteristics of magnetic microparticles. The device to analyze the magnetic characteristics of magnetic microparticles comprises: a chamber to store an electrolyte solution containing magnetic microparticles to be measured; a membrane having a through-hole with a cross section through which the magnetic microparticles can pass, and crossing the chamber to divide the chamber into first and second chambers; an electrical field application part to apply an electrical field from the first chamber to the second chamber to accelerate the movement of the magnetic microparticles; a magnetic field application part to apply a variable magnetic field to the chamber; and an ampere-meter to detect the strength of ion current generated when ions in the electrolyte solution are moved from the first chamber to the second chamber by the electrical field applied by the electrical field application part. The device to analyze the magnetic characteristics of magnetic microparticles can detect the cut-off of the ion current generated when the magnetic microparticles pass the through-hole using a detection signal applied from the ampere-meter, and can calculate the magnetic characteristics of the magnetic microparticles passing the through-hole; thereby calculating the magnetic characteristics of the individual magnetic microparticle and evaluating the characteristics of the individual magnetic microparticle.