A nano-cable composed of magnetic material and semi-metallic material and its preparation method

A technology of semi-metal materials and nano-cables, which is applied in metal material coating process, nano-structure manufacturing, cable/conductor manufacturing and other directions, can solve the problems of complex process and high technical requirements, achieve the effect of scientific preparation method and overcome technical difficulties

Inactive Publication Date: 2012-02-15
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are deficiencies in this nano-heterojunction and its synthesis method; at first, the cable composed of metal copper and semimetal bismuth first synthesizes a nanotube with an upper end seal, then removes the seal at the upper end of the nanotube, and finally in the nanotube nanocables
This process is complex and requires high technical

Method used

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  • A nano-cable composed of magnetic material and semi-metallic material and its preparation method
  • A nano-cable composed of magnetic material and semi-metallic material and its preparation method
  • A nano-cable composed of magnetic material and semi-metallic material and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: Complete the preparation successively according to the following steps

[0039] 1) Anodize the aluminum sheet, first place the aluminum sheet in an oxalic acid solution with a concentration of 0.2M, anodize it for 5 hours at a DC voltage of 30V, and then soak it in a mixed solution at a temperature of 50°C for 8 hours; Wherein, the mixed solution is 4wt% phosphoric acid and 2wt% chromic acid at 50°C.

[0040] 2) Anodizing for the second time, repeating the anodizing process of step 1) for the aluminum sheet obtained in step 1), and performing anodic oxidation for the second time on the aluminum sheet to obtain an aluminum sheet with holes at the bottom;

[0041] 3) the aluminum flake obtained after step 2) is oxidized, first remove the unoxidized aluminum on the back side with a supersaturated tin tetrachloride solution, and then corrode the aluminum oxide barrier layer at the bottom of the hole with a 3wt% phosphoric acid solution to obtain a Through-hol...

Embodiment 2

[0046] Embodiment 2: Complete the preparation successively according to the following steps

[0047] 1) Aluminum sheet anodizing, first place the aluminum sheet in an oxalic acid solution with a concentration of 0.3M, anodize it at a DC voltage of 50V for 3h, and then soak it in a mixed solution at a temperature of 50°C for 10h; among them, mixing The solution was 5 wt% phosphoric acid and 3 wt% chromic acid at 50°C.

[0048] 2) Anodizing for the second time, repeating the anodizing process of step 1) for the aluminum sheet obtained in step 1), and carrying out anodizing for the second time on the aluminum sheet;

[0049] 3) the aluminum flake obtained after step 2) is oxidized, first remove the unoxidized aluminum on the back side with a supersaturated tin tetrachloride solution, and then corrode the aluminum oxide barrier layer at the bottom of the hole with a 3wt% phosphoric acid solution to obtain a Through-hole alumina template, the diameter of the through-hole is 70nm; ...

Embodiment 3

[0054] Embodiment 3: Complete the preparation successively according to the following steps

[0055] 1) Aluminum sheet anodizing, first place the aluminum sheet in an oxalic acid solution with a concentration of 0.35M, anodize it at a DC voltage of 60V for 2h, and then soak it in a mixed solution at a temperature of 50°C for 14h; among them, mixing The solution was 5 wt% phosphoric acid and 3 wt% chromic acid at 50°C.

[0056] 2) Anodizing for the second time, repeating the anodizing process of step 1) for the aluminum sheet obtained in step 1), and carrying out anodizing for the second time on the aluminum sheet;

[0057] 3) the aluminum flake obtained after step 2) is oxidized, and the unoxidized aluminum on the back is removed with a supersaturated tin tetrachloride solution, and then the aluminum oxide barrier layer at the bottom of the hole is corroded with a 4wt% phosphoric acid solution to obtain a Through-hole alumina template, the aperture of the through-hole is 90nm...

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Abstract

The invention relates to a nanometer cable composed of magnetic material and semi-metallic material and its preparation method. The nano-cable includes a nano-cable core and a cable sheath coated outside the nano-cable core, the nano-cable core and the cable sheath are coaxial; the nano-cable core is bismuth semimetal, and the nano-cable sheath is magnetic metal nickel; The diameter of the cable core is 20-170nm, and the thickness of the nano-cable shell layer is 10-80nm. The preparation method adopts the secondary anodic oxidation method to obtain the through-hole alumina template, evaporates the metal film on the alumina template and corrodes the through-holes, and then deposits in the electrolyte to realize direct electrochemical deposition in the through-hole of the alumina template, and obtains Nickel (shell) and bismuth (core) nano-cables, and finally put the bismuth core wire and nickel shell in the through hole in a strong alkali solution to corrode the alumina template to make a nano-cable composed of bismuth core wire and nickel shell .

Description

technical field [0001] The invention relates to a nanometer cable and a preparation method thereof, in particular to a nanometer cable composed of magnetic materials and half-metal materials and a preparation method thereof. Background technique [0002] Nanocable refers to the nanowire whose core is semiconductor or conductor, and which is coated with heterogeneous conductor or non-conductor nanoshell. The outer shell and core wire are coaxial, and its geometric structure is similar to that of coaxial cable. to the nanoscale. Nanocables with core-shell structure with unique physical properties have attracted widespread attention due to their potential application prospects in nanodevices such as new-generation optical fibers, high-performance solar cells, and nanocomputers. At present, in order to explore and expand the connotation, preparation method and application of nano-cables, people have made some attempts and efforts. For example, in October 2005, the US "Physical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/00H01B5/02H01B13/00C25D3/12C25D11/12B82B1/00C25D11/04C25D11/18C25D5/12B82B3/00
Inventor 杨大驰智林杰
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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