Unlock instant, AI-driven research and patent intelligence for your innovation.

Fabrication method of CNT (carbon nano tube) emitter

一种碳纳米管、碳纳米管结构的技术，应用在碳纳米管发射体的制备领域，能够解决碳纳米管场发射性能不稳定、不均匀、制备方法难以实现自动化等问题，达到实现自动化大规模生产、制备方法简单、发射性能稳定的效果

Active Publication Date: 2013-07-03
TSINGHUA UNIV +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the surface of the carbon nanotube array is mixed with a small amount of impurities such as catalyst particles and amorphous carbon, the field emission performance of the carbon nanotube is unstable and uneven, which affects the field emission performance of the carbon nanotube array, and the preparation method Difficult to automate

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fabrication method of CNT (carbon nano tube) emitter
  • Fabrication method of CNT (carbon nano tube) emitter
  • Fabrication method of CNT (carbon nano tube) emitter

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0030] See figure 1 , the invention provides a kind of preparation method of carbon nanotube emitter, it comprises the following steps:

[0031] Step 1, providing a substrate 10 having a first surface 102 .

[0032] The material of the base 10 is an insulating material, which can be selected from hard materials such as silicon, quartz, glass, ceramics, diamond, etc., or polymer flexible materials such as plastics and resins, or composite materials. Carbon nanotube bonded materials. The first surface 102 is a smooth plane. In this embodiment, the material of the base 10 is silicon, the base 10 has a cuboid structure, and the first surface 102 is a rectangle.

[0033] Step 2, providing a carbon nanotube structure 12, the carbon nanotube structure 12 is arranged on the first surface 102, the carbon nanotube structure 12 includes a plurality of carbon nanotubes extending in the same direction, the carbon nanotubes Extending along the first surface 102 of the substrate 10, the ...

specific Embodiment 2

[0063] See Figure 8 , the second specific embodiment of the present invention further provides a method for preparing a carbon nanotube emitter, specifically comprising the following steps:

[0064] Step 1, providing a substrate 10 having a first surface 102 .

[0065] Step 2: Provide a plurality of carbon nanotube structures 12, and arrange the plurality of carbon nanotube structures 12 at intervals on the first surface 102, and each of the plurality of carbon nanotube structures 12 includes a plurality of carbon nanotube structures extending in the same direction. nanotubes, the carbon nanotubes extend along the first surface 102 of the substrate 10, and the plurality of carbon nanotube structures 12 each have opposite first ends 120 and second ends in the direction in which the carbon nanotubes extend , fixing the first end 120 to the first surface 102 .

[0066] The plurality of carbon nanotube structures 12 can be arranged on the first surface 102 at intervals from end...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a fabrication method of a CNT (carbon nano tube) emitter, which comprises the following steps that a base is provided; the base is provided with a first surface; at least one CNT structure is provided and arranged on the first surface, and comprises a plurality of CNTs extending in the same direction; the CNTs extend along the first surface of the base; the CNT structure is provided with a first end and a second end that are opposite in the extension direction of the CNTs; the first end is fixed with the first surface; pressure is applied to the CNT structure by a scraping and pressing device, and the CNT structure is scraped in the extension direction of the CNTs from the first end simultaneously; the second end of the CNT structure is far away from the first surface; and the CNT emitter is obtained.

Description

technical field [0001] The invention relates to a preparation method of a carbon nanotube emitter. Background technique [0002] Since the early 1990s, nanomaterials represented by carbon nanotubes have attracted great attention due to their unique structures and properties. In recent years, with the continuous deepening of research on carbon nanotubes and nanomaterials, their broad application prospects continue to emerge. For example, due to the unique electromagnetic, optical, mechanical, and chemical properties of carbon nanotubes, a large number of applications in the fields of field emission electron sources, sensors, new optical materials, and soft ferromagnetic materials have been continuously reported. [0003] Taking field emission technology as an example, carbon nanotubes have already become excellent field emission cathode materials due to their excellent electrical conductivity, perfect lattice structure, and nanoscale tip. Please refer to Walt A. de Heer et a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01J9/02H01J1/304B82Y10/00B82Y30/00C01B31/00
CPCB82Y10/00B82Y30/00H01J9/025
Inventor 柳鹏范守善
Owner TSINGHUA UNIV