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Method for coating graphene on tip of atomic force microscope probe

An atomic force microscope and probe tip technology, which is applied in scanning probe technology, scanning probe microscopy, measuring devices, etc., can solve the problems of low yield of atomic force microscope tips, and achieve strong practical and popularization value and yield. Improved, easy-to-use effects

Active Publication Date: 2018-08-07
BEIJING INST OF COLLABORATIVE INNOVATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for coating graphene on the tip of the atomic force microscope to solve the problem of low yield of the tip of the atomic force microscope coated with the existing liquid phase transfer method

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  • Method for coating graphene on tip of atomic force microscope probe

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Embodiment 1

[0023] This embodiment provides a method for coating graphene on the tip of an atomic force microscope probe, and the schematic diagram of the method is as follows figure 1 shown; specifically:

[0024] (1) Poly-lysine modification: take 10 mL of poly-lysine aqueous solution 2 with a concentration of 0.001 mg / ml in the petri dish 4, and immerse the atomic force microscope probe in the poly-lysine solution 2 30 seconds, take out;

[0025] (2) Immerse graphene solution: get 10mL concentration and be that the graphene aqueous solution 3 of 1mg / ml is in petri dish 5, will immerse the atomic force microscope probe processed through step (1) in 3 for 30 seconds, take out, blow with nitrogen Do it and get it.

Embodiment 2

[0027] This embodiment provides a method for coating graphene on the probe tip of an atomic force microscope. Compared with Embodiment 1, the only difference is that the concentration of the poly-lysine aqueous solution is 0.01 mg / ml.

Embodiment 3

[0029] This embodiment provides a method for coating graphene on the tip of an atomic force microscope probe. Compared with Example 1, the only difference is that the concentration of the poly-lysine aqueous solution is 0.5mg / ml, and the The concentration of graphene solution is 2mg / ml.

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Abstract

The invention relates to a method for coating graphene on a tip of an atomic force microscope probe. The method comprises steps that the atomic force microscope probe is taken and is immersed into thepolylysine aqueous solution, the atomic force microscope probe is then immersed into the graphene solution after taking out from the polylysine aqueous solution, and the atomic force microscope probeis taken out and is dried. The method is advantaged in that interaction of polycations of the polylysine with anions on the graphene is utilized, the force between the atomic force microscope tip andthe graphene is enhanced, the yield of the graphene-coated AFM probe tip prepared by the impregnation method is greatly improved, the yield can reach over 90%,raw materials are easy to get, operationis simple, and the method has great practical and popularization values.

Description

technical field [0001] The invention relates to the field of atomic force microscope preparation, in particular to a method for coating graphene on the tip of an atomic force microscope probe. Background technique [0002] Atomic Force Microscope (AFM) is an analytical instrument that can be used to study the surface structure of solid materials including insulators. The basic principle of the atomic force microscope is: one end of a microcantilever that is extremely sensitive to weak force is fixed, and the other end has a tiny needle tip. , by controlling the constant force during scanning, the microcantilever with the needle tip will fluctuate in the direction perpendicular to the surface of the sample corresponding to the equipotential surface of the force between the needle tip and the surface atoms of the sample. By using the optical detection method or the tunnel current detection method, the position change of the micro-cantilever corresponding to each scanning poin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01Q60/38
CPCG01Q60/38
Inventor 段慧玲李学全邵丽华张凯
Owner BEIJING INST OF COLLABORATIVE INNOVATION
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