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Air pressure micromanipulation system and method for micron-sized particle sample

A technology of manipulation system and air pressure system, which is applied in the microscopic field of materials and mineral samples, can solve the problems of poor voltage control and release position, and achieve the effect of controllable direction and force and high capture success rate

Active Publication Date: 2020-04-10
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

This method needs to implant tiny wires in the glass needle tip in advance, and the voltage is not good to control the release position

Method used

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  • Air pressure micromanipulation system and method for micron-sized particle sample
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  • Air pressure micromanipulation system and method for micron-sized particle sample

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Embodiment

[0058] The method specifically includes the following steps (attached Figure 4~6 screenshot for video):

[0059] Step 1. Use simulated lunar soil particles of different sizes (10-200 μm) and disperse them on the glass slide;

[0060] Step 2. Make a hollow tip with a glass tip puller (eg figure 2 );

[0061] Step 3. Use the binocular lens of a stereo microscope to find a particle with a particle size of about 40 μm, and move the tip of the glass needle point above the sample by means of a three-axis movement of the microcontroller (such as Figure 4 ), turn on the vacuum function of the air pressure controller, adjust the air pressure to about 500psi, absorb the particles to the tip of the needle tip, and then raise the glass needle tip to a safe area;

[0062] Step 4: Move the sample stage to another position, and use the microcontroller to slowly bring the glass needle tip close to the sample stage. When the observation system sees that the glass needle tip is gradually f...

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Abstract

The invention relates to an air pressure micromanipulation system and method for a micron-sized particle sample. The method comprises the following steps: firstly, fixing a hollow glass needle tip ona clamping rod of a microcontroller; finding a single particle sample to be extracted on the sample table on which the particle sample is placed by using a microscope; starting negative pressure provided by the air pressure system to capture a sample to the tip end of the needle tip, releasing a single particle sample adsorbed by static electricity by utilizing pulse positive pressure after the sample table is replaced, and recording, regulating and controlling the whole sample moving and operating process by utilizing the microscopic observation and imaging system. The method is simple, efficient, high in success rate and suitable for various solid materials and minerals, and well solves the problem of transfer and control of single particles of the micro-sized rare samples. The system issimple in structure and easy to build, and can be widely applied to the fields of biology, materials, geology and planetarium.

Description

[technical field] [0001] The invention belongs to the microscopic technology field of materials and mineral samples, and relates to a gas pressure micromanipulation system and method for micron-sized particle samples. [Background technique] [0002] Planetary and space science is gaining more and more attention. However, the particle size of near-space particles, interstellar dust particles and micrometeorite samples are mostly in the micrometer scale, for example, the interstellar dust and micrometeorite samples are about 2-150 μm in size; the Itokawa asteroid Itokawa particle samples collected by Japan’s Hayabusa are in Between 30 and 180 μm, the study of these samples is of great significance for exploring the formation and evolution of the solar system and the evolution of planetary systems. However, in-situ analysis techniques such as electron microscopy and secondary ion mass spectrometry cannot analyze and test these precious micron-sized samples like conventional sa...

Claims

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Application Information

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IPC IPC(8): G01N15/10
CPCG01N15/10
Inventor 谷立新张驰唐旭王念林杨挺
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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