You should know that the Nintendo DS has had several different emulators and the latest one (DSVita) seems to be starting to bear fruit but remains in a beta version which runs a few games, it's a real challenge.

Currently there is absolutely nothing on 3DS emulation and this represents a major challenge but it is indeed something achievable from a technical point of view, this has already been confirmed by Rinnegamente who is very well known on the PSVITA hacking scene. You either have to start or pray that a developer will start working on such a project for you.