Effect of Annealing on Magnetic Sensitivity of Coils Prepared by Electro-Hydrodynamic Printing
This study focuses on the effect of thermal annealing on the magnetic sensitivity characteristics of micro/nano metal coils prepared by different electro-hydrodynamic jet printing modes.Firstly,the influence of different coil parameters on the inductance performance of the coil is simulated,and a planar magnetic coil structure is designed.Next,the coil is printed by an electro-hydrodynamic jet printing equipment,and the performance of the printed coil is characterized by a magnetic field generation and detection system.Finally,the magnetic induction characteristics of micro-nano metal coils prepared by different electro-hydrodynamic jet printing methods before and after heat annealing under the same condition(vacuum,300 °C)are compared under a uniform alternating magnetic field.The variation of the induced electromotive force with the excitation voltage/current is analyzed.The experimental results show that the coil exhibits better electrical conductivity after the annealing under the same excitation conditions,and the change mechanism is addressed.This paper provides an idea for the preparation of micro/nano magnetic sensitive coils based on electro hydrodynamic jet printing technology.
electro-hydrodynamic jet printingmicro/nano metal coilsannealingmagnetic sensitive characteristicsalternating magnetic field
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