Caption: "Vantablack grown on tinfoil."
"Vantablack is substance made of vertically aligned carbon nanotube arrays and is the blackest artificial substance known, absorbing up to 99.965 % of electromagnetic radiation (EMR) in the visible band (fiducial range 0.4--0.7 μm)" (Wikipedia: Vantablack: slightly edited).
Actually, the carbon nanotubes act a bit like tiny Purcell's hohlraums trapping the light that enters them by multiple reflections until it is dissipated to waste heat (see Wikipedia: Vantablank: Properties).
Note carbon nanotubes may be pose a health concern (see Wikipedia: Toxicology of carbon nanomaterials: Carbon nanotubes).
Despite appearances, vantablack is NOT dark energy.
Credit/Permission: ©
Surrey NanoSystems
2014
(uploaded to Wikimedia Commons
by User:Anna Frodesiak,
2014) /
2008) /
CC BY-SA 3.0.
Image link: Wikimedia Commons:
File:Vantablack 01.JPG.
Local file: local link: vantablack.html.
File: Art file:
vantablack.html.