Ultrahigh thermal isolation across heterogeneously layered two-dimensional materials

Heterogeneous nanomaterials can now facilitate advanced electronics and photonics applications, but such progress is challenging for thermal applications due to the comparatively shorter wavelengths of heat carriers (known as phonons). In a new study, now published on Science Advances, Sam Vaziri and co-workers at Theiss Research and the departments of Electrical Engineering, Materials Science and Engineering at the National Institute of Standards and Technology (NIST), and the Precourt Institute of Energy at Stanford University, Stanford California, demonstrated unusually high thermal isolation across ultra-thin heterostructures.