JP5363411B2 - 一次元の微小材料の熱伝導率の測定方法 - Google Patents
一次元の微小材料の熱伝導率の測定方法 Download PDFInfo
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Description
図1を参照すると、本実施例の熱伝導率測定装置1は、測定目標200の熱伝導率を測定するために使用される。前記測定目標200は、一次元のナノメーターサイズ又はマイクロメートルサイズの材料からなる。前記一次元の材料は、ナノチューブ、ナノロッド、ナノワイヤー、ナノ繊維又はナノリボンであり得る。
10 支持装置
11 基体
12 第一絶縁層
13 第二絶縁層
16 第一電極
17 第二電極
18 第三電極
19 第四電極
20 真空容器
112 溝部
114 第一支持部
115 第二支持部
200 測定目標
Claims (1)
- 一次元の微小材料を提供して、その横断面積Sを測定する第一ステップと、
少なくとも四つの電極が間隔をおいて配置される支持装置を提供して、前記一次元の微小材料を、前記支持装置に前記四つの電極を横切って跨るように配置して、前記四つの電極の中間の二つの電極の間における前記一次元の微小材料の一部を懸架させる第二ステップと、
前記一次元の微小材料の懸架される一部の長さΔLを測定する第三ステップと、
真空環境において、前記四つの電極の両端の二つの電極によって、前記一次元の微小材料に電流を流入して、前記一次元の微小材料を昇温させて一つの熱平衡に到達させた後に、前記一次元の微小材料の電流Iを測定し、前記一次元の微小材料の懸架される一部の電圧Uを測定して、数式P=UIによって、前記一次元の微小材料の懸架される一部の、その軸方向に沿って生じた熱出力Pを計算する第四ステップと、
前記一次元の微小材料の懸架される一部の中心点及びいずれか一つの端点の温度差ΔTを測定して、数式
含み、
前記第五ステップにおいて、前記一次元の微小材料のラマンスペクトルのGプライムバンドと温度の間の関係曲線の傾きK及び、前記一次元の微小材料の懸架される一部の中心点及びいずれか一つの端点の、ラマンスペクトルのGプライムバンドの差によって、前記温度差ΔTは、次の数式
ΔT=KΔG
により計算することを特徴とする一次元の微小材料の熱伝導率の測定方法。
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