Super-elasticity particle shear modulus detecting device and method based on nano-holes

A detection device and shear modulus technology, which are applied in measurement devices, individual particle analysis, particle and sedimentation analysis, etc., can solve the problems that restrict the practical application of detection methods, the insignificant change of ionic current of particles passing through nanopores, and the detection and recognition rate. It is not difficult to prepare, increase detection accuracy, and overcome instability.

Inactive Publication Date: 2019-03-12
HAINAN UNIVERSITY
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Problems solved by technology

[0004] The commonly used solid-state nanopores also have the following problems: First, the channel length of solid-state nanopores is usually more than 5nm, which is relatively large for most micro-nano particles, resulting in insignificant changes in the ion current of particles passing through the nanopores
Secondly, in the nanopore-based detection method, the speed of particles passing through the nanopore is generally fast, resulting in a low detection and recognition rate. These problems seriously restrict the practical application of this detection method.

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Embodiment Construction

[0019] Below in conjunction with accompanying drawing, the present invention will be further described.

[0020] as attached figure 1 As shown, the present invention is a nanopore-based superelastic particle shear modulus detection device and method. The detection device is a detection device with a microcavity-solid nanopore-microcavity structure as the core, and specifically includes an electrolytic The silicon-based substrate (2) in the liquid (7), two cylindrical microcavities (3) and (6) etched on the upper and lower sides of the silicon-based substrate (2), are bombarded by ion beams. A nanopore (4) is made through the microcavities (3) and (6), and the insulating layer (1) is wrapped on the outer surface of the silicon-based substrate (2). The microcavity-solid nanopore-microcavity structure divides the detection device into upper and lower parts, the external electrode (11) placed on the upper part of the device is connected to a positive potential, and the external e...

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PUM

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Abstract

The invention discloses a super-elasticity particle shear modulus detecting device and method based on nano-holes. The detecting device mainly comprises two micro-cavities of a silicon substrate, nano-holes for connecting the micro-cavities and a current detecting loop. During detection, particles penetrate through the nano-holes under the effect of a static electric field. Meanwhile, weak currentvariation when the particles penetrate through the nano-holes is measured by the current detecting loop, and then, the shear modulus of particles is analyzed by data.

Description

technical field [0001] The invention belongs to the technical field of detecting particles by using nanopores, and in particular relates to a detection device and method for shear modulus of superelastic particles based on nanopores. Background technique [0002] The detection of water pollution, especially the detection of marine pollution, is the direction of human continuous research. At present, the detection of micro-nano particles in the water quality environment is a practical problem that needs to be solved urgently. The types of water environmental scientific analysis objects are complex and different in nature, so the analysis methods must be accurate, fast, efficient, sensitive, and automated. [0003] With the needs of life and work, small, portable, automatic and continuous, simple and fast detection methods are a development trend, and the detection technology based on nanopores is the most representative one. In recent years, nanopore-based detection technol...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/10
CPCG01N15/1031
Inventor 周腾葛鉴吉祥史留勇汝绍峰张先满邓鲁豫
Owner HAINAN UNIVERSITY
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