Nanofabrication of Janus Fibers through Side-by-Side Electrospinning - A Mini Review

Janus and core-shell nanostructures are the most fundamental structural characteristics for comprising all types of multiplechamber structures. The facile preparation of Janus structure is one of the most difficult challenges in the field of nanofabrication, whose production can pave a broad way for generating a wide variety of hierarchic nanostructures. Based on several most recent reports, this mini review provides some comments on the generation of Janus nanofibers on the following topics: (1) the key points for fabricating Janus nanofibers using side-by-side electrospinning; (2) the strategies for functionalizing the Janus nanofibers; and (3) the possibilities of complex nanostructures started from the two-chamber Janus structures.