A heterotube diode

A heterotube diode

Cartoon image of the heterotube diode: this device contains a MoS2 semiconductor shell (blue), over the insulator hBN shell (purple), over the carbon nanotube core (green) of the heteronanotube covered with gold electrodes (yellow)."

Image of a heterotube diode: This device contains a MoS2 semiconductor shell (blue), over the insulator hBN shell (purple), over the carbon nanotube core (green) of the heteronanotube covered with gold electrodes (yellow).

IMAGE: ELIZABETH FLORES-GOMEZ MURRAY/ PENN STATE