Basically, yes: some prototypes have been made in labs, but haven't really seen the light of day. Wikipedia has an article about it here: https://en.wikipedia.

Basically, yes: some prototypes have been made in labs, but haven't really seen the light of day. Wikipedia has an article about it here: https://en.wikipedia.org/wiki/Memristor https://en.wikipedia.org/wiki/Memristor As noted in the article, HP says that memristor memory may be commercially available by 2018, so I guess we'll see then....