CNT is a promising new material, which Wikipedia describes as such:
Carbon nanotubes (CNTs) are allotropes of carbon with a cylindrical nanostructure. These cylindrical carbon molecules have unusual properties, which are valuable for nanotechnology, electronics, optics and other fields of materials science and technology. Owing to the material's exceptional strength and stiffness, nanotubes have been constructed with length-to-diameter ratio of up to 132,000,000:1, significantly larger than for any other material.
In addition, owing to their extraordinary thermal conductivity, mechanical, and electrical properties, carbon nanotubes find applications as additives to various structural materials.
For this reason, the name carbon nanotubes appear from time to time in various works of science fiction, and I too want to use CNT in a science fiction game, set in the near future which I am making, since I am trying to achieve some degree of photorealistic graphic, I will, however, need to know what CNT will look like.
specifically, I want to know which of the two main categories of solid, non-transparent material surfaces commonly used in physically based rendering CNT would fall under.
as this article on PBR computer graphics explains,
»Electrically conductive materials, most notably metals« look quite different from other materials.
Which is why it often is sufficient to assume that the most common materials in the world are either metallic or dielectric/insulating.
Given that CNT by Wikipedia is described as:
Unlike graphene, which is a two-dimensional semimetal, carbon nanotubes are either metallic or semiconducting
I first assumed was that I should treat CNT as a metal, but I am not certain if CNT has other properties which would make it look significantly different from metal.
My question is, therefore, is it a fair approximation to render carbon nanotubes using a metallic shader? or would it be better to render it as an insulator? Edit 1: and would CNT look anisotropic.
Edit 0: So it looks like we actually already have some macroscopic CNT structures, but I really can't tell whether or not this looks metallic or not: