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Magnetic hetero nano fiber self assembling super crystal lattice structure material and its preparing method

A technology of nanofibers and structural materials, applied in nanostructure manufacturing, chemical instruments and methods, nanotechnology, etc., can solve the problems of magnetic nanofibers that have not been reported

Inactive Publication Date: 2004-12-15
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are no reports on how to further prepare magnetic nanofibers into materials with advanced ordered structures and how to use high-intensity magnetic fields to manipulate nanoscale particles.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: 0.5ml PS-b-PCEMA-b-PAA / γ-Fe 2 o 3 Put the hybrid nanofiber THF solution into a glass tube with an inner diameter of 3mm*100mm, the solution concentration is 0.08g / ml, and then put it in a 9tesla (Tesla) magnetic field. At 25°C, put the tube under the magnetic field for self-assembly Dry for 10 hours at 50°C for 8 hours. After the solvent in the glass tube evaporates to dryness, take out the glass tube, and the sample forms a film on the tube wall. After drying, the nanofiber film is peeled off from the glass tube to obtain about 0.04 g of sample. Observed under a microscope, a material with a hexagonal superlattice structure of about 20 microns can be seen.

Embodiment 2

[0018] Embodiment 2: 0.5mlPS-b-PCEMA-b-PAA / γ-Fe2 o 3 The tetrahydrofuran solution of hybrid nanofibers was put into a 5mm*150mm glass tube with a solution concentration of 0.06g / ml, placed in a 9tesla magnetic field, assembled at 25°C for 20 hours, and dried at 50°C for 10 hours. Take out the glass tube and observe it under a microscope, and you can see a material with a square superlattice structure of about 20 microns.

Embodiment 3

[0019] Embodiment 3: 0.8ml PS-b-PCEMA-b-PAA / γ-Fe 2 o 3 Put the hybrid nanofiber tetrahydrofuran solution into a 3mm*150mm glass tube with a solution concentration of 0.02g / ml, put it in a 9tesla (Tesla) magnetic field, and put the tube under the magnetic field for a period of time at 25°C, and assemble it for 18 hours After the solvent evaporates to dryness, the glass tube is taken out, and the sample forms a film on the tube wall and is dried or peeled off to obtain about 0.8 g of sample. Observed under a microscope, micron-scale cross-shaped, rod-shaped, needle-shaped superlattice structure materials can be seen.

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Abstract

The superlattice structure material has micron lever ordered superlattice structure formed with magnetic hetero nano fiber and through self-assembling and has regular geometric shape, such as rectangular pyramid, etc. The preparation process includes setting magnetic hetero nano fiber solution of certain concentration in strong magnetic field at certain temperature for certain time to self assemble and spread into film, and drying to obtain superlattice structure. The hetero material has important application is display technology, high density memory and other aspects.

Description

technical field [0001] The invention relates to a magnetic hybrid nanofiber self-assembled superlattice structure material and a preparation method thereof. Background technique [0002] Nanomaterials with photoelectric effect have broad application prospects in microelectronics technology, so the method of preparing nanomaterials with photoelectric effect is very important. It is more important to use macroscopic means to further assemble and manipulate it into advanced ordered structure materials or nanoelectronic devices, and to provide a method for processing nanoelectronic devices. Scanning tunneling microscopy can be used as an effective tool to manipulate single atoms on surfaces and fabricate atomic and nanoscale artificial structures. Block copolymers self-assemble to form various forms of nanomaterials, and magnetic nanomaterials such as polymer / inorganic magnetic hybrid nanospheres have been reported, G. Liu, Angwandte Chemie 2001, 40(19), 3593. However, there a...

Claims

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Application Information

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IPC IPC(8): B81C99/00B82B3/00
Inventor 王国昌李贺先袁家龙徐娜
Owner NANKAI UNIV
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