Fluid viscosity detection device and detection method based on nanowire vertical array

Abstract

The invention discloses a fluid viscosity detection device and detection method based on a nanowire vertical array. The detection device includes a human-computer interaction device, a detection processing circuit, a detection probe including an excitation coil, and a microchip made of a magnetic nanowire array. , the detection probe is connected with the detection processing circuit and the human-computer interaction device in turn, the microchip is used to put into the fluid to be tested, and the detection probe is used to provide an alternating magnetic field for the microchip directly above the fluid to be tested and detect the microchip’s real-time vibration signal. The invention is compact in structure, small in size, easy to move, only needs a small amount of samples to detect viscosity, has high stability and reliability, and adopts magnetic nanowire array, which greatly improves sensitivity and response speed, and does not need additional consideration of fluid conduction It can be widely used in the field of fluid viscosity measurement.

Description

technical field [0001] The invention relates to the field of fluid viscosity measurement, in particular to a fluid viscosity detection device and detection method based on a nanowire vertical array. Background technique [0002] Viscosity is one of the most important physical properties of fluids, and the characterization of viscosity properties is extremely important for engineering applications and basic research. Traditional fluid viscosity measurement methods include capillary method, rotation method, drop method, plate method, viscosity cup method, etc. These traditional viscosity measurement methods take a long time, cannot obtain the viscosity characteristics of the fluid online in real time, and the required sample size is generally Larger, unable to meet the measurement requirements of small sample volume. [0003] In the prior art, there is also a viscosity detection device—a liquid-carrying mechanical resonator, which is measured by the mechanical resonance metho...

AI Technical Summary

Problems solved by technology

However, this type of device mostly adopts a rectangular cantilever beam structure, which has low sensitivity and small quality factor, resulting in low measurement accuracy of this type of sensor.

Moreover, the rectangular cantilever beams mostly use piezoelectric materials, which are wired active drives. The influence of fluid conductivity should be considered in the design, which increases the cost of equipment.

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