Composite overlay of optical and electron microscope images of a carbon nanotube lamp filament between electrodes about 1 μm apart. The nanotube itself is not visible in the image. Colored contours indicate the size and shape of the incandescence intensity distribution.
From the article:
Probing Planck’s Law with Incandescent Light Emission from a Single Carbon NanotubeYuwei Fan, S. B. Singer, Raymond Bergstrom, and B. C. Regan
Phys. Rev. Lett. 102, 187402 (2009)
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