REMOTE TEMPERATURE MEASUREMENT METHOD FOR MAGNETIC NANO-PARTICLE BASED ON PARAMAGNETIC PROPERTY

摘要

A remote temperature measurement method for magnetic nano-particle based on paramagnetic property, comprises the following steps: (1) disposing a magnetic nano-sample at the position of an object to be measured; (2) applying n different exciting magnetic fields to the area where the magnetic nano-sample locates; (3) sampling the magnetization intensities of the magnetic nano-sample in different exciting magnetic fields, and computing the magnetic susceptibilities in different exciting magnetic fields based on the magnetization intensities; (4) constructing an equation set for the different exciting magnetic fields and the corresponding magnetic susceptibilities based on the langevin paramagnetic theorem; (5) solving the equation set to acquire a temperature T. The invention can detect the temperature of the object more precisely and rapidly, especially is suitable for detecting the biomolecule thermal motion.