Typical cycle-to-cycle I-V curves. (IMAGE) Science China Press Caption Typical cycle-to-cycle I-V curves of the (a) planar, (b) S1, (c) S2, and (d) S3 RRAM devices. Fifty consecutive switching cycles from the same devices are shown for all the subulate and planar devices. The subulate RRAM devices exhibit superior uniformity. Credit ©Science China Press Usage Restrictions Use with credit. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.