Search International and National Patent Collections

1. (WO2018144599) MAGNETIC NANOPARTICLE CHARACTERIZATION

Pub. No.:    WO/2018/144599    International Application No.:    PCT/US2018/016233
Publication Date: Fri Aug 10 01:59:59 CEST 2018 International Filing Date: Thu Feb 01 00:59:59 CET 2018
IPC: H01F 1/00
H01F 27/28
H01F 27/40
Applicants: REGENTS OF THE UNIVERSITY OF MINNESOTA
WU, Kai
Inventors: WU, Kai
WANG, Jian-Ping
Title: MAGNETIC NANOPARTICLE CHARACTERIZATION
Abstract:
An example system includes an excitation coil configured to simultaneously subject a sample volume comprising a plurality of magnetic nanoparticles to a first excitation field having a frequency ƒH and a second excitation field having a frequency ƒL, to generate a magnetic response including a plurality of harmonics from the sample volume. A detection coil is configured to output a response signal indicative of one or both of the plurality of harmonics or a phase lag. The example system includes a computing device configured to receive the response signal, extract one or both of the phase lag or predetermined harmonic components of the plurality of harmonics, and determine an average saturation magnetization, an average hydrodynamic volume, or a core state of the plurality of magnetic nanoparticles based on one or both of the phase lag or the predetermined harmonic components.