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Nano metal wire and method for manufacturing the same and nano line

A nano-metal, nano-wire technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve problems such as low conductivity

Active Publication Date: 2014-10-22
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most preparation methods often form silver nanowires with a length of about tens of nanometers (nm) to several micrometers (μm), whose aspect ratio is less than 1000 (or even less than 100), and has low conductivity.

Method used

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  • Nano metal wire and method for manufacturing the same and nano line
  • Nano metal wire and method for manufacturing the same and nano line
  • Nano metal wire and method for manufacturing the same and nano line

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A solution of silver nitrate in ethylene glycol (30 mg / mL) was placed in the barrel connected to the inner barrel of the needle, and a solution of PVP in methanol (200 mg / mL) was placed in the barrel connected to the outer barrel of the needle. Controlled by a syringe pump, the flow rate of the silver precursor solution in the inner tube was 0.1 mL / hr, and the flow rate of the polymer solution in the outer tube was 1 mL / hr. After electrospinning, nanowires with a diameter of about 2.2 μm are formed.

[0028] Temper the nanowires at 150°C for about 8 minutes in the atmosphere, and then wash and remove the polymer tubes with water to obtain silver nanowires with a diameter of about 500nm and a length of about 10cm, that is, an aspect ratio of 200,000. Measure its absorption spectrum with a spectrometer, the results are as follows Figure 5 .

Embodiment 2

[0030] The method is the same as in Example 1, except that the tempering time is changed to about 20 minutes, and then the polymer tube is removed by washing with water to measure the absorption spectrum of the nano-silver wire. The above absorption spectrum is as Figure 5 shown. The diameter of the above-mentioned nano-silver wire is about 500 nm, and the length is up to 10 cm, that is, the aspect ratio is 200,000.

Embodiment 3

[0032] The method is the same as in Example 1, except that the tempering time is changed to about 10 hours, and then the polymer tube is removed by washing with water to measure the absorption spectrum of the nano-silver wire. The above absorption spectrum is as Figure 5 shown. The diameter of the above-mentioned nano-silver wire is about 500 nm, and the length is up to 10 cm, that is, the aspect ratio is 200,000.

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Abstract

Disclosed is a method of manufacturing a nano metal wire, including: putting a metal precursor solution in a core pipe of a needle; putting a polymer solution in a shell pipe of the needle, wherein the shell pipe surrounds the core pipe; applying a voltage to the needle while simultaneously jetting the metal precursor solution and the polymer solution to form a nano line on a collector, wherein the nano line includes a metal precursor wire surrounded by a polymer tube; chemically reducing the metal precursor wire of the nano line to form a nano line of metal wire surrounded by the polymer tube; and washing out the polymer tube by a solvent.

Description

technical field [0001] The present invention relates to nanometer metal wires, and more particularly to methods for their formation. Background technique [0002] In recent years, nanotechnology has flourished in many fields such as information technology, material science, and biotechnology. One of the reasons is that when the size of a substance is reduced to a nanometer size, its basic properties will change with different shapes and sizes. For example, when silver is prepared into nanorods or silver wires, its physical properties will show long-axis and short-axis absorption peaks due to surface plasmon resonance, respectively. As the aspect ratio of silver nanowires or rods increases, the characteristic peaks of the long axis will shift in red (see Advanced Materials Volume23, Issue26, pages2905-2910, July12, 2011). [0003] At present, some research teams have used the chemical reduction process to prepare nano-silver wires or silver wires with higher aspect ratios. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00B82Y40/00B82Y30/00
CPCH01B13/148D01D5/0015D01D5/0023D01D5/003D01D5/0038D01D5/0046Y10T428/294
Inventor 孙文贤陈联泰陈文章陈蓉瑶
Owner IND TECH RES INST