Research Flowchart (IMAGE) Japan Science and Technology Agency Caption The optimum nanostructure designed with MI (aperiodic superlattice structure) was actually fabricated, and the optimal performance was verified by assessing its thermal conductivity. Figure: the Actual Structure is the electron microscope image of the fabricated sample. In addition, by further analyzing the phonon transport in the optimal structure, the mechanism that reduces thermal conductivity was clarified. Credit The University of Tokyo Usage Restrictions None License Licensed 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.