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Temperature sensor based on disordered multi-wall carbon nano-tube and metal heterojunction

A technology of multi-walled carbon nanotubes and temperature sensors, which is applied in thermometers, thermometers and instruments using electrical/magnetic elements directly sensitive to heat, etc., to achieve broad application prospects, fast response time and low cost.

Inactive Publication Date: 2007-07-18
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are diode temperature sensors, thermocouple temperature sensors, line temperature sensors, Bragg grating temperature sensors, etc., and their composition and principle can be described as various, but there are limitations in their structure and use.

Method used

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  • Temperature sensor based on disordered multi-wall carbon nano-tube and metal heterojunction
  • Temperature sensor based on disordered multi-wall carbon nano-tube and metal heterojunction

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Embodiment Construction

[0012] Fig. 2 is a schematic structural diagram of the temperature sensor of the present invention. The temperature sensor includes an insulating and heat-insulating tube 4, a multi-wall carbon nanotube powder column 2 filled in the insulating and heat-insulating tube, arranged at one end of the multi-wall carbon nanotube powder column and closely contacting with the carbon nanotube column to form a carbon nanotube-metal heterogeneous The junction metal temperature probe 3 and the conductive metal block 1 sealed and pressed at the other end of the carbon nanotube column, and the electrodes are respectively drawn out from the metal temperature probe and the conductive metal block. Metal temperature probes and conductive metal blocks can be made of copper, silver, aluminum and other metals. The manufacturing method of the sensor is to put multi-walled carbon nanotube powder into an insulating and heat-insulated tube and compact it to form a carbon nanotube powder column, and the...

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Abstract

This invention relates to a metal hetero-junction temperature sensor and its process method based on disordered multi-wall carbon nanometer tube. The temperature sensor comprises the following: multi-wall carbon nanometer tube power column filled in heat-isolation tube; metal temperature probe of carbon nanometer tube-metal heterojunction with multi-wall carbon nanometer powder column end set and tightly contacted with the carbon nanometer powder column; the conductive metal block sealed on the other end of the carbon nanometer powder column. When in work, it is first to connect electrode and outer circuit gage; then to contact the metal temperature probe and the object to be measured. In this way, the circuit can generate heat circuit changing with temperature due to the existence of the nanometer tube-metal heterojunction.

Description

technical field [0001] The invention relates to a temperature sensor, in particular to the design of a temperature sensor based on a disordered carbon nanotube-metal heterojunction. Background technique [0002] Temperature sensors have been widely used in various fields of life and scientific research. There are diode temperature sensors, thermocouple temperature sensors, line temperature sensors, Bragg grating temperature sensors, etc., and their composition and principle can be described as various, but there are limitations in their structure and use. Carbon nanotubes have attracted people's attention since their birth. It has penetrated into all fields of scientific research and life like a prairie fire, and many mature technologies for the synthesis and preparation of carbon nanotubes have been reported. For example [Zhang XF, Cao AY, Wei BQ, Li YH, Wei JQ, Xu CL, and Wu DH, CHEMICAL PHYSICS LETTERS2002, 362:285-290], [Ci LJ, Wei JQ, Wei BQ, Liang J, Xu CL, and Wu D...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K7/02
Inventor 孙家林刘晓萌孙红三朱嘉麟李俊林
Owner TSINGHUA UNIV