Design of terahertz metamaterial absorbers with switchable absorption functions utilizing thermal and electrical dual-modulation strategies.

This work demonstrates a dual-functional tunable terahertz metamaterial absorber based on thermally controllable vanadium dioxide (VO) and electrically tunable graphene. The switchable absorption functions could be obtained in the same metamaterial, which consists of alternating stacked cross-cut graphene disks (CGDs) and VO square rings (VSRs) separated by an ultra-thin dielectric film placed on a continuous gold mirror. The metallic state of VSRs is the dominant factor for the broadband absorption function, resulting in a broadband absorption of 4.

Broadband tunable terahertz metamaterial absorber having near-perfect absorbance modulation capability based on a patterned vanadium dioxide circular patch.

A new tunable broadband terahertz metamaterial absorber has been designed based on patterned vanadium dioxide ( ). The absorber consists of three simple layers, the top pattern layer, the middle media layer, and the bottom metal layer. Based on phase transition properties of , the designed device has excellent absorption modulation capability, achieving the functional transition from broadband absorption to near-perfect reflection.

The second species of Phanoperla (Plecoptera: Perlidae) from China, P. hainana sp. nov., from Hainan Island.

The genus Phanoperla Banks was originally established as a subgenus of Neoperla and its genus delimitation was not fully clear until the revisionary work by Zwick (1982). It currently contains 49 known species from the Oriental region (Banks 1938, 1939, Cao & Bae 2009, Cao et al. 2007, DeWalt et al.

Stoneflies of the genus Neoperla (Plecoptera, Perlidae) from Wuyi Mountain National Nature Reserve, Fujian of China.

The species of the genus Neoperla are reviewed from Wuyi Mountain National Nature Reserve located in the Fujian Province of southeastern China, including the description of a new species, Neoperla brevistyla sp. n. The new species is compared to similar taxa.

Two new species of Neoperla (Plecoptera, Perlidae) from China.

Two species of the genus Neoperla from China are described as new: Neoperla furcostyla sp. n., and Neoperla similidella sp.

Haploperla choui sp. n. (Plecoptera: Chloroperlidae), a remarkable new stonefly from Qinling Mountains of China.

A new chloroperline stonefly species, Haploperla choui from the Qinling Mountains, Shaanxi Province, China is described. It is compared to other species of the genus known from Asia.