Method for growing patterned graphene film on surface of hydroxyapatite

A technology of hydroxyapatite and surface growth, applied in gaseous chemical plating, medical science, metal material coating technology, etc., can solve problems such as low strength

Inactive Publication Date: 2012-07-04
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the biggest disadvantage of hydr

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  • Method for growing patterned graphene film on surface of hydroxyapatite
  • Method for growing patterned graphene film on surface of hydroxyapatite
  • Method for growing patterned graphene film on surface of hydroxyapatite

Examples

Experimental program
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Embodiment 1

[0012] (1) Deposit a layer of copper with a thickness of 1 micron on the surface of hydroxyapatite ceramics by conventional electron beam evaporation.

[0013] (2) Pass acetylene, hydrogen and argon into the reaction chamber of the Aixtron Black Magic deposition system, react at 900 degrees Celsius for 5 minutes, and grow graphene on the surface of hydroxyapatite deposited with copper by chemical vapor deposition.

[0014] (3) After cooling, the designed graphene layer is covered on the surface of the material by corroding the copper layer. This step is done by etching with 30% ferric chloride for 10 minutes.

[0015] (4) Use Raman spectroscopy to demonstrate material properties.

Embodiment 2

[0017] The method steps and parameters of this embodiment are basically the same as those of Embodiment 1, except that a layer of nickel with a thickness of 1 micron is deposited on the surface of the hydroxyapatite ceramic in step (1).

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Abstract

The invention relates to a method for growing a patterned graphene film on the surface of hydroxyapatite, which comprises: firstly, forming a patterned copper layer on a hydroxyapatite ceramic substrate by an electron beam evaporation process; secondly, catalytically decomposing hydrocarbons on the patterned surface, and growing the patterned graphene film on the surface of the material; and finally, verifying the possibility for growing cells on the material. The hydroxyapatite material with the patterned graphene film allows the behavior/density of the cells to be regulated by adding an accurate local electric field on the graphene layer; and combining the bone growth promoting capacity of the hydroxyapatite, a new material is provided for promoting/helping bones to grow.

Description

technical field [0001] The patent of the invention belongs to the field of microelectronic packaging, and develops a hydroxyapatite material for bone growth. This hydroxyapatite combines the excellent mechanical properties of graphene. The hydroxyapatite material combined with the patterned graphene membrane in this invention can also be used as a biocompatible electrode. Background technique [0002] Hydroxyapatite is a bioactive calcium phosphate bioceramic, hydroxyapatite is used to replace and mimic bone structure, it has the important property of promoting bone growth (along its crystal surface). As a bioactive material, hydroxyapatite bioceramics have been widely used in biomedical fields such as the repair of clinical bone defects. However, the biggest disadvantage of hydroxyapatite bioceramics is low strength. [0003] Two-dimensional honeycomb graphene composed of carbon atoms has excellent electrical and mechanical properties. The most efficient way to grow larg...

Claims

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Application Information

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IPC IPC(8): C23C16/26C23C16/01A61L27/40
Inventor 刘建影常江
Owner SHANGHAI UNIV
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