Synthetic Diamond
Spear / Dismukes
The hardest known material and the premiere thermal conductor at room temperature, diamond resists heat, acid, and radiation, is a good electrical insulator but can be doped to form p- and n- type semiconductors, and has the highest known figure of merit for power semiconductor applications. Diamond is transparent to both visible and infrared radiation and has a small dielectric constant. Though long recognized, most of these superior properti...