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Experimental method for gas flowing characteristics in nanometer channel

A gas flow, nano-channel technology, applied in the field of experiments, can solve problems such as inability to accurately predict and measure

Active Publication Date: 2018-07-10
ZHEJIANG OCEAN UNIV
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Problems solved by technology

[0004] In order to solve the previous research on nanochannels, the molecular dynamics simulation method is generally used, and the experimental method is rarely used, and the force of the gas at the micro- and nano-scale is far different from that at the macro-scale (1mm-1m). The flow rate is either much larger than the flow rate predicted by the traditional theory, or is much smaller than the flow rate predicted by the traditional theory, and cannot be accurately predicted and measured. The present invention provides a nano Experimental methods for gas flow characteristics in channel bundles

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  • Experimental method for gas flowing characteristics in nanometer channel
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  • Experimental method for gas flowing characteristics in nanometer channel

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Embodiment 1～7

[0089] An experimental method of gas flow characteristics in a nanochannel, the experimental method of nitrogen flow characteristics in the nanochannel comprises the following steps:

[0090] 1) Select a channel bundle film with a pore size of 12.5-300nm, and accurately measure its pore size and pore density with a scanning electron microscope;

[0091] 2) Select high-purity gas as the gas source to be used as the measurement object, and use high-pressure gas tank as the pressure source;

[0092] 3) Connect each pipeline and power supply with high-pressure plastic hose, and seal the interface with a hard seal;

[0093] 4) Use the upper and lower clamps containing the supporting sandstone to clamp and seal the channel bundle film through two sealing clamps and sealing rubber rings;

[0094] 5) Step 1) The high-purity nitrogen gas filled in the gas tank is controlled by a pressure control valve to control its flow rate and flow rate, and the pressure and temperature are read by...

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Abstract

The invention relates to an experimental method for gas flowing characteristics in a nanometer channel, wherein the experiment method can carry out experimental research on gas flowing at a submicro-nano level and has simple operations. The experimental method for nitrogen flowing characteristics in a nanometer channel comprises: measuring the pore size and the pore density, selecting a gas source, connecting each pipeline and each line, sealing a channel beam film by using a clamping device and a rubber ring, carrying out step test, recording and finishing the experimental measurement results, and checking whether the channel beam film is damaged, wherein the obtained data is valid if the channel beam film is not damaged.

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 gas flow at the nanometer scale and having easy-to-operate gas flow characteristics in nanochannels. Background technique [0002] In the past 20 years, with the increasing application of micro-nano technology, the flow characteristics of gas in nanochannels have attracted people's attention. Previous studies in nanochannels generally use molecular dynamics simulation methods, and rarely use experimental methods. The force of gas at the micro- and nano-scale is far different from that at the macro-scale (1mm-1m), and its flow rate is either much larger than the flow predicted by traditional theory, or much smaller than the flow predicted by traditional theory. The clear flow characteristics of gas at the micro- and nano-scale are conducive to the improvement of efficiency in bioengineering, medical treatme...

Claims

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Application Information

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