单个白炽多壁碳纳米管的单色高温测量
Single-color pyrometry of individual incandescent multiwalled carbon nanotubes
摘要：
与其热光子波长相比较小的物体违反了光学高温测量的基本假设，并可能显示出不寻常的相干效应。为了研究这个制度，我们测量的绝对光强度从个别，白炽多壁碳纳米管。使用透射电子显微镜确定纳米管细丝的物理尺寸和组成，并根据体电导率计算其发射率。然后，单色高温分析返回测量的每个波长、偏振和施加的偏压的温度值。与更常见的多波长分析相比，单色高温测定法支持碳纳米管灯的更一致和完整的图像，描述其在1600-2400 K范围内的发射率，光学传导率和热导率。
英文摘要：
Objects that are small compared to their thermal photon wavelengths violate the assumptions underlying optical pyrometry and can show unusual coherence effects. To investigate this regime we measure the absolute light intensity from individual, incandescent multiwalled carbon nanotubes. The nanotube filaments' physical dimensions and composition are determined using transmission electron microscopy and their emissivities are calculated in terms of bulk conductivities. A single-color pyrometric analysis then returns a temperature value for each wavelength, polarization, and applied bias measured. Compared to the more common multiwavelength analysis, single-color pyrometry supports a more consistent and complete picture of the carbon nanotube lamps, one that describes their emissivity, optical conductivity, and thermal conductivity in the range 1600-2400 K.
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