Figure 2From: Rolled-up tubes and cantilevers by releasing SrRuO3-Pr0.7Ca0.3MnO3 nanomembranes Rolled-up SRO/PCMO/SRO microtubes. (a) Rolled-up SRO/PCMO/SRO microtube with a diameter of 6.0 μm. (b, c) Positioned microtubes obtained from <100> -oriented trenches defined by optical lithography. The tubes in (b) exhibit an aspect ratio of nearly 1:700.Back to article page