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An auxiliary device for the preparation of metal nanoprobes

A metal nanoprobe and auxiliary device technology, which is applied in the direction of measuring devices, scanning probe technology, scanning probe microscopy, etc., can solve the problem that the metal nanoprobe cannot monitor the start and end time, and reduce human factors Interference, stable needle tip quality, and reduced work intensity

Active Publication Date: 2021-01-12
北京阳光凯特科贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the above problems, and the present invention is designed to solve the problem that the start and end moments cannot be monitored during the electrolytic corrosion preparation process of the existing metal nanoprobes. Through the principle of circuit amplification, the current signal at the beginning and end of the preparation is used and the change of electrical signal during the corrosion process to accurately grasp the corrosion preparation process and control the preparation of nanoprobes

Method used

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  • An auxiliary device for the preparation of metal nanoprobes
  • An auxiliary device for the preparation of metal nanoprobes

Examples

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Effect test

Embodiment 1

[0027] As shown in the drawings, the present invention is an auxiliary device for the preparation of metal nanoprobes, an electrolytic cell, a power supply and a support mechanism; the power supply is connected to the electrolytic cell and forms an electrolytic circuit.

[0028] The electrolytic cell comprises that the electrolytic cell comprises the cathode ring 7 as the negative electrode, the probe body 4 as the anode, the isolation cover 6 and the electrolytic cell body 5, the electrolytic solution is installed in the electrolytic cell body 5, and the isolation cover 6 is fixed in the electrolytic cell body 5 and Limit to isolate the cathode ring 7 and the probe body 4 . The probe body 4 can adopt metal wires such as tungsten wire, gold wire, platinum wire and platinum-iridium alloy wire. The diameter of the metal wire is not greater than 1 mm.

[0029] The power supply includes a response mechanism, an amplification circuit 1 and a comparison circuit 2; the response mech...

Embodiment 2

[0040] The method of using the above structure to make metal nanoprobes is as follows:

[0041] Rotate the lifting control handle 11 so that the probe body 4 is immersed in the liquid surface of the electrolyte. When the probe body 4 just touches the liquid surface, an induced current is generated, and the induced current drives the buzzer 3 through the amplifier circuit 1 to emit a continuous prompt sound, and then Continue to rotate the number of turns that the lifting control handle 11 rotates to determine that the probe body 4 stretches into the electrolyte, and the depth of the probe body 4 immersing in the liquid surface is 2-3 millimeters.

[0042] After the depth adjustment is completed, power on the electrolytic cell to continue the adjustment, the nano-probe tip corrosion process starts, the indicator light lights up, and the buzzer 3 prompt sounds stop. The current in the electrolysis circuit is reduced to a certain extent, the comparison circuit 2 compares the actu...

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Abstract

The invention relates to an auxiliary device prepared for a metal nanoprobe, especially relates to an automatic, real-time monitoring, and automatic sound reminding device which assists the preparation of the nanoprobe, and belongs to the field of a condensed matter physics experimental scientific instrument. The auxiliary device comprises an electrolytic tank using a probe body as an anode and apower source; the power source is connected with the electrolytic tank and formed to be an electrolytic loop; the power source comprises a response mechanism, an amplifying circuit and a comparison circuit; the amplifying circuit and the comparison circuit are electrically connected with the response mechanism, and the amplifying circuit is used for amplifying the current in the electrolytic circuit to start the response mechanism; the comparative compares the setting value with the current in the electrolytic circuit to stop or open the response mechanism; the auxiliary device can start by one button in the full process and automatically complete; the device has acousto-optic prompt, thus the working intensity of an experimenter is greatly reduced; the circuit can automatically judge theneedle point state, so that the artificial factor disturbance is reduced and the quality of the needle point is stable; an anode sleeve makes that a metal silk is easily perpendicular to a liquid level, the contact alarm design of the liquid face can easily confirm the immersion depth of the metal silk, and thus the operation difficulty is reduced.

Description

technical field [0001] The invention relates to an auxiliary device for the preparation of metal nano-probes, in particular to a fully automatic, real-time monitoring and automatic sound prompt device for assisting the preparation of nano-probes, belonging to the field of scientific instruments for condensed matter physics experiments. Background technique [0002] Nanoscale metal probes are often used in advanced scientific research instruments such as scanning tunneling microscope (SEM), scanning probe microscope (SPM), field ion microscope (FIM), and field emission electron microscope (FEM). High-quality nano-needle tips are conducive to obtaining high-quality experimental images and data, and giving full play to the performance of the instrument. [0003] Most of the metal probes commonly used at present are commercial metal probes provided by instrument manufacturers. Such probes are often expensive and have a limited service life, which greatly increases the cost of s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01Q70/16
CPCG01Q70/16
Inventor 潘锋孙成山
Owner 北京阳光凯特科贸有限公司
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