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Graphene has been widely used in improving the physical properties of polymer composites. By adding different forms of graphene nanomaterials to the polymer matrix, the thermal conductivity of the polymer composite can be effectively improved. In this work, the research of graphene-polymer thermal composites is reviewed, and the main preparation methods and material design principles of graphene-polymer composites are analysed. The main preparation methods include improving the dispersion, surface modification, tailoring the size and loading, applying synergistic effect and building three-dimensional network of graphene.

Isolation as an effective means of shock absorption in some of the earthquake to show good performance and has been increasingly applied to practical engineering. However, it had a negative impact on long-period structures and isolated structures seismic performance in near the earthquake zone. Meanwhile, in the vicinity of near-fault for the torsion response of plane irregular base-isolated structure can not be ignored. Therefore, the paper uses the universal finite element software to analyse irregular plane isolated structure’ collapsed performance and anti-seismic structure’ collapsed performance under the near fault ground motion. The results show that plane irregular non-isolated structures appear earlier than the isolated structures of plastic hinge and easier to collapse.

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In this paper, we propose a novel method to achieve super-resolution imaging by utilizing shifting media based on the transformation optics theory. According to the effective medium theory, the homogenous but anisotropic shifting media can be simply replaced by only two kinds of homogenous and isotropic materials in an alternating layered structure. In addition, another scheme of the symmetrical trapezoidal shifting media shells with layered isotropic materials is proposed to realize the super-resolution imaging. Finite element simulations have been performed to prove these ideas.