Nuclear pore membrane small sample etching apparatus

Abstract

The present invention relates to a nuclear pore membrane small sample etching apparatus, which is mainly characterized by comprising an etching cup, wherein a sealed upper cup cover is arranged above the etching cup, an inner cover performing secondary sealing on the etching cup is arranged below the upper cup cover, a membrane bracket is arranged below the inner cover, a thermal-sensitive probe is arranged inside the etching cup, the etching cup has the double-layer hollow cup wall, the upper side and the lower side are respectively provided with a water inlet and a water outlet, the water inlet and the water outlet are respectively communicated with the water outlet end and the water inlet end of a constant temperature circulation system, and magnetic transmission stirring comprising a magneton and a magnetic stirring device is arranged below the etching cup. According to the present invention, with the magnetic stirring, the etching liquid maintains the uniform state; with the circulating water heating of the etching cup interlayer, the etching liquid temperature is uniform; the built-in thermal-sensitive probe and the etching liquid are connected, such that the etching liquid temperature can be accurately controlled; the whole etching cup maintains the sealed state, such that the solution evaporation can be reduced; and the sample is fixed through the sample clamp, such that the sample maintains the flat state, the sample taking is convenient, and the cleaning and air-drying are easy.

Description

technical field [0001] The invention relates to a device for etching small samples of nuclear pore membranes. This device is mainly used for etching tests of small samples of nuclear pore membranes, and its main application fields include nuclear pore membrane experimental research, nuclear pore membrane production process inspection, etc. Background technique [0002] Nuclear pore membrane, also known as nuclear microporous membrane or heavy ion microporous membrane, is formed by punching holes in the insulating material film with heavy ions and then chemically etching to expand the pores. Under certain etching conditions (temperature, concentration, etc.), the etching rate of the nuclear pore membrane remains the same, and the pore size has a linear relationship with the etching time. The pore size of the nuclear pore membrane is one of the main performance indicators of the nuclear pore membrane, which is mainly precisely controlled by the etching time. [0003] In orde...

AI Technical Summary

Problems solved by technology

The first solution uses a water bath with magnetic stirring to ensure the uniformity of the etching solution and temperature because the etching solution is directly heated, but it is difficult to meet the requirements in terms of sealing, corrosion resistance of materials, and sampling convenience.

The second solution is difficult to meet the requirements in terms of accuracy of heating temperature, uniformity of etching temperature, sealing, and convenience of sampling.

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