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Measuring and calculating method for electronic thermal conductivity of metallic nano-mesoporous material

A technology of mesoporous materials and metal nanometers, which is applied in the direction of material thermal conductivity, etc., to achieve the effect of facilitating research and heat transfer characteristics

Inactive Publication Date: 2017-01-04
CHINA UNIV OF MINING & TECH
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Problems solved by technology

At present, there is no method to measure the electronic thermal conductivity of metal nano-mesoporous materials, which is an urgent problem to be solved in this industry

Method used

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  • Measuring and calculating method for electronic thermal conductivity of metallic nano-mesoporous material
  • Measuring and calculating method for electronic thermal conductivity of metallic nano-mesoporous material
  • Measuring and calculating method for electronic thermal conductivity of metallic nano-mesoporous material

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Embodiment Construction

[0032] The present invention will be further described below.

[0033] Such as figure 2 Shown, concrete steps of the present invention are as follows:

[0034] (1) The size and shape of the metal nano-mesoporous material to be detected and the known bulk electron mean free path l corresponding to the metal bulk 0B Sure;

[0035] (2) Determine the electron free path of the metal block: bulk electron free path l 00 electron mean free path l 0B Obtained, bulk electron mean free path l 0B In the hemispherical space, such as figure 1 The integral average of the electron free path along the transport direction Z shown, the corresponding expression is:

[0036]

[0037] Where θ is the angle between the electron movement direction and the Z axis, is the angle between the projection of the direction of electron motion on the XY plane and the positive direction of the X axis; due to the mean free path of the bulk electrons l 0B is a known value, so it can be obtained that t...

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Abstract

The invention discloses a measuring and calculating method for the electronic thermal conductivity of a metallic nano-mesoporous material. The method comprises the steps that the size and shape of the metallic nano-mesoporous material to be detected and the electron mean free path l[0B] of an existing block material corresponding to the metallic block material are determined; 2, the electron free path l[00] of the metallic block material is determined; 3, an electron is randomly selected from the metallic nano-mesoporous material; 4, the free path of the current selected metallic nano-mesoporous material electron is determined; 5, the mean free path l[0] of all the electrons is calculated when the current selected electron completes motion; 6, the electron mean free path l is output; 7, the electronic thermal conductivity k of the metallic nano-mesoporous material is calculated. According to the method, the electronic thermal conductivity of the metallic nano-mesoporous material can be measured and calculated, the electronic thermal conductivity of the nano-mesoporous material can be conveniently obtained when the electronic thermal conductivity cannot be directly measured, and subsequent research on the thermal transmission characteristics of the metallic nano-mesoporous material is promoted.

Description

technical field [0001] The invention relates to a method for measuring and calculating the electron thermal conductivity of metal nano mesoporous materials. Background technique [0002] Nanomaterials are a new type of material with broad application prospects. Nanoporous composite materials have many unique optical, electrical, magnetic and catalytic properties. It is generally believed that the specific performance of nanoporous composite materials is expected to have a profound impact on solar cells, electrode materials, solid batteries, chemical sensing, and gas sensing. Design and development of key devices in the fields of materials, nonlinear optical materials, infrared sensors, etc. The performance of these devices will be largely affected by the thermophysical properties of the nanoporous materials themselves. More fundamentally, the thermophysical properties of nanoporous materials are also an important purely scientific issue that has received extensive attentio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/18
CPCG01N25/18
Inventor 黄丛亮罗丹辰蔺子甄黄尊甄文开
Owner CHINA UNIV OF MINING & TECH
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