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Experimental method of liquid flow characteristics in nanochannels

A liquid flow and nano-channel technology, applied in the field of experiments, can solve problems such as inability to accurately predict and measure, and achieve the effects of low cost, simple operation, and simple equipment

Active Publication Date: 2018-07-17
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the previous research on nanochannels, molecular dynamics simulation is generally used, and experimental methods are rarely used, and the force of liquid at the nanoscale is far different from that at the macroscale (1mm-1m), and its flow or Far greater than the flow rate predicted by the traditional theory, or much smaller than the flow rate predicted by the traditional theory, the problem that accurate prediction and measurement cannot be performed. The present invention provides a nano-channel that can realize experimental research on liquid flow at the nanoscale and is easy to operate. Experimental methods for liquid flow characteristics

Method used

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  • Experimental method of liquid flow characteristics in nanochannels

Examples

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Effect test

Embodiment 1

[0049] An experimental method of liquid flow characteristics in a nanochannel, the experimental method of liquid flow characteristics in the nanochannel comprises the following steps:

[0050] 1) select the aluminum oxide nano-membrane of 125 nanometer aperture, and measure its accurate diameter and pore density with scanning electron microscope;

[0051] 2) Add deionized water sterilized by ultraviolet light and filtered by a nanomembrane with a pore size of 25 nanometers into the liquid tank;

[0052] 3) Connect each pipeline and power supply with high-pressure plastic hose, and seal the interface with a hard seal;

[0053] 4) Clamp and seal the aluminum oxide nano-membrane with a pore size of 125nm through two sealing clips and sealing rubber rings using the upper and lower clamps containing the supporting sandstone;

[0054] 5) Use high-purity nitrogen as a power source to pressurize and displace the entire experimental system, read the pressure and temperature through pres...

Embodiment 2

[0058] An experimental method of liquid flow characteristics in a nanochannel, the experimental method of liquid flow characteristics in the nanochannel comprises the following steps:

[0059] 1) Select an aluminum oxide nano-membrane with a pore size of 90 nanometers, and measure its accurate diameter and pore density with a scanning electron microscope;

[0060] 2) Add deionized water sterilized by ultraviolet light and filtered through a nanomembrane with a pore size of 25 nanometers into the liquid tank;

[0061] 3) Connect each pipeline and power supply with high-pressure plastic hose, and seal the interface with a hard seal;

[0062] 4) Clamp and seal the alumina nano-membrane with a pore size of 90nm by using the upper and lower clamps containing the supporting sandstone respectively through two sealing clamps and sealing rubber rings;

[0063] 5) Use high-purity nitrogen as a power source to pressurize and displace the entire experimental system, read the pressure and...

Embodiment 3

[0067] An experimental method of liquid flow characteristics in a nanochannel, the experimental method of liquid flow characteristics in the nanochannel comprises the following steps:

[0068] 1) Select an aluminum oxide nanofilm with a pore size of 65 nanometers, and measure its accurate diameter and pore density with a scanning electron microscope;

[0069] 2) Add deionized water sterilized by ultraviolet light and filtered by a nanomembrane with a pore size of 25 nanometers into the liquid tank;

[0070] 3) Connect each pipeline and power supply with high-pressure plastic hose, and seal the interface with a hard seal;

[0071] 4) Clamp and seal the aluminum oxide nano-membrane with a pore size of 65nm through two sealing clamps and sealing rubber rings using the upper and lower clamps containing the supporting sandstone;

[0072] 5) Use high-purity nitrogen as a power source to pressurize and displace the entire experimental system, read the pressure and temperature throug...

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Abstract

The invention relates to an experimental method of liquid flow characteristics in nanochannels for carrying out an experimental study on liquid flow at the sub-micron and nano-scale and being simple and convenient to operate, and solves the problem that the force situation of liquid under the nano-scale is far different from that under the macro-scale (1mm-1m), and the flow rate of the liquid is much larger than that predicted by the traditional theory or much smaller than that predicted by the traditional theory because previous studies in the nanochannels generally use a molecular dynamics simulation method, and the experimental method is seldom used, thereby being not capable of accurately measuring the flow rate of the liquid.

Description

technical field [0001] The invention relates to the field of experimental methods, in particular to an experimental method capable of carrying out experimental research on liquid flow at the nanometer scale and having easy-to-operate liquid flow characteristics in nanochannels. Background technique [0002] In the past 20 years, with the increasing application of micro-nano technology, the flow characteristics of liquid in nanochannels have attracted people's attention. Previous studies in nanochannels generally use molecular dynamics simulation methods, and rarely use experimental methods. The stress of liquid at the nanoscale is far different from that at the macroscale (1mm-1m), and its flow rate is either much greater than or much smaller than that predicted by traditional theories. The clear flow characteristics of liquids at the nanoscale are conducive to the improvement of efficiency in biotechnology, pollution treatment, and oil and gas field development. [0003] I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N11/00
CPCG01N11/00
Inventor 宋付权胡箫纪凯文建军朱根民朱维耀
Owner ZHEJIANG OCEAN UNIV
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