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Nature’s Subsidiary npj Computational Materials Publishes Research Results of Professor Li Dengfeng’s Research Group
Time: 2019-04-10   

On April 10th, 2019, the top journal npj Computational Materials in the field of international computational materials published the latest paper Orbitally driven giant thermal conductance associated with abnormal strain dependence in hydrogenated graphene-like borophene, 5, 47 (2019). This paper is finished with CQUPT as its first signature organization, He Jia, a postgraduate from School of Science and Technology, as its first author, and Professor Li Dengfeng of our university and Professor Zhang Gang of Institute of High Performance Computing of Singapore as its corresponding authors.

With the miniaturization, integration and intelligent development of microelectronic devices and intelligent systems, effective heat dissipation is very important for the performance and stability of devices, so that the center research direction of microelectronic devices is to find new materials with high thermal conductivity and effective regulation of heat transfer. Phonons and electrons can transfer heat energy in a solid. Li Dengfeng’s research group has found that hydrogenated graphene-like borophene not only has the same phonon thermal conductivity just as the highest thermal conductivity two-dimensional graphene reported so far, but also has strong electron thermal conductivity, which is 10 times that of graphene. It is a two-dimensional material with high phonon thermal conductivity and high electron thermal conductivity. The total thermal conductivity is twice that of graphene. It is also the highest thermal conductivity two-dimensional material reported so far. Because the electrons are more easily controlled relative to the phonons, the heat transport properties of the two-dimensional material are more easily regulated. In addition, an abnormal phenomenon in which the total thermal conductivity of hydrogenated graphene increases with increasing tensile strain in the direction of the armchair has been found and reasonably explained.

npj Computational Materials was co-founded by Springer Nature and Shanghai Institute of Ceramics, Chinese  Academy of Sciences, which is one of the high-end platforms for publishing theoretical guidance and computational design discoveries of new materials. In 2018, the journal’s first impact factor was 8.941, entering the Q1 area.

In addition, in 2018 with Li Dengfeng as the first author and corresponding author, and our university as the first signatory organization, Li’s paper titled Stretch-Driven Increase in Ultrahigh Thermal Conductance of Hydrogenated Borophene and Dimensionality Crossover in Phonon Transmission (DOI: https://doi.org/10.1002/adfm.201801685) was published in Advanced Function Materials (Imp. 13.3), a top journal in the field of materials, and selected as the current cover page.