By integrating an atomically-thin superlattice with a microcavity, we prepare a system to manipulate the quantum state with versatile flexibility, suggesting a new path to ultralow energy nonlinear photonic devices.

The delamination between cathode and electrolyte during cell fabrication or thermal cycling is one of the most typical failures due to their thermo-mechanical incompatibility. We achieved thermo-mechanical compatibility and high activity in an SOFC cathode by a thermal-expansion offset approach.