On page 3750, S. Hong, K. No, and co-workers describe highly ordered and well-aligned PbTiO3/TiN core-shell nanotubes that are fabricated via an AAO templating route followed by TiN and TiO2 ALD deposition and a subsequent PbO vapor reaction. Because of the TiN cores, which act as mechanical pillars and a core electrode, PbTiO3/TiN nanotubes keep their original shape after the vapor phase reaction, and they display well-defined piezoresponse hysteresis curves with a remnant piezoresponse.