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Nanowire vertical array based fluid viscosity detection device and detection method

A fluid viscosity and detection device technology, applied in the direction of measuring devices, flow characteristics, instruments, etc., can solve the problems of low sensor measurement accuracy, increased equipment cost, small quality factor, etc., and achieve small size, easy movement, stability and reliability sex high effect

Active Publication Date: 2015-10-28
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Nanowire vertical array based fluid viscosity detection device and detection method
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  • Nanowire vertical array based fluid viscosity detection device and detection method

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Effect test

Embodiment 1

[0067] refer to figure 1 , a fluid viscosity detection device based on a nanowire vertical array, including a human-computer interaction device, a detection processing circuit, a detection probe including an excitation coil, and a microchip 1 made of a magnetic nanowire array 12, the detection probe is sequentially connected with the detection processing The circuit is connected with the human-computer interaction device, the microchip 1 is used to put into the fluid 2 to be tested, and the detection probe is used to provide the microchip 1 with an alternating magnetic field directly above the fluid 2 to be tested and detect the real-time vibration signal of the microchip 1 .

[0068] refer to figure 2 , the microchip 1 of this embodiment is made by preparing a vertical magnetic nanowire array 12 on a first substrate 11 by template electrochemical deposition method or solution gel method and other existing technologies. The material of the magnetic nanowire array 12 can be ...

Embodiment 2

[0086] The fluid viscosity detection method based on the nanowire vertical array using the fluid viscosity detection device of Embodiment 1 includes:

[0087] S1, immersing the microchip 1 made of the magnetic nanowire array in the fluid 2 to be tested;

[0088] S2. Place the detection probe on the top of the fluid 2 to be tested so that the detection probe is located directly above the microchip 1, adjust the lifting platform 4, and adjust the distance between the detection probe and the microchip 1 containing the magnetic nanowire array 12, Applying an alternating signal to the exciting coil of the detection probe, so that a mutual inductance coupling is formed between the detection probe and the microchip 1;

[0089] S3, using the detection probe to detect the real-time vibration signal of the microchip 1 and sending it to the detection processing circuit;

[0090] S4. After the real-time vibration signal of the microchip 1 is processed by the detection and processing circ...

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Abstract

The invention discloses a nanowire vertical array based fluid viscosity detection device and a detection method. The detection device comprises a human-machine interaction apparatus, a detection processing circuit, an excitation coil containing detection probe, and a microchip made from a magnetic nanowire array. The detection probe is connected to the detection processing circuit and the human-machine interaction apparatus in order, the microchip is placed into a to-be-detected fluid, and the detection probe is used for providing an alternating magnetic field to the microchip right above the to-be-detected fluid and detecting the real-time vibration signal of the microchip. The detection device provided by the invention has the advantages of compact structure, small volume, convenient movement, viscosity detection with low sample consumption, high stability and reliability, and adopts the magnetic nanowire array, greatly improves the sensitivity and response speed, also has no need to additionally consider the influence of fluid conductivity, and 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...

Claims

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Application Information

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IPC IPC(8): G01N11/00
Inventor 吴佩萱房飞宇张克维陈新王晗陈新度刘强
Owner GUANGDONG UNIV OF TECH
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