Two-dimensional material family and then welcome the "small fresh meat" one. U.S. scientists recently said they developed Stanene, a two-dimensional network of tin atoms, the graphene's cousin. Theoretical predictions say the material can be 100% conductive, and researchers hope to confirm its excellent electrical properties as soon as possible. However, it was also pointed out that further experiments are needed to confirm that the new material is indeed tin-pentene.

Sinoe structure chart

Graphene was born in 2004, triggering a wide range of scientists interested in two-dimensional materials, so far they have developed a variety of two-dimensional materials, including silylene, germanium, etc. Most of these materials have excellent electrical conductivity, but In theory, pentene is superior.

In 2013, a team led by Zhang Shousheng at Stanford University found that tin monoxide, which is a single-layer tin atom, could be the world's first super-material to achieve 100% conductivity at room temperature, far more than in recent years Hot graphene.

Shou-Sheng Zhang said that tin is a topological insulator or insulator, in this material, charge carriers (such as electrons) can not reach the center of the material, only the edge of freedom to move. Therefore, impurities in the material can not impede the flow of electrons, the current will not be wasted in the form of heat, electrical conductivity up to 100%. This means that pentene is the perfect "highway" to carry electricity.

According to the British "Nature" magazine website reported on the 3rd, Zhang Shousheng team to produce tin diene but it can not confirm it is indeed a topological insulator. He explained that they made such a net by allowing tin to vaporize in a vacuum, allowing tin atoms to float to a support surface made of bismuth telluride. Although the surface of bismuth telluride forms two-dimensional stannous crystals, it also interacts with stannum and exhibits properties unsuitable for topological insulators.

Ralph Kleinsen, a physicist at the University of Würzburg in Germany, believes that it is not yet entirely certain that the new material is tin alkene. In theory, two-dimensional tin grids should form a hook-and-loop honeycomb structure. Atoms bent alternately upward to form corrugated folds. Zhang Shousheng team only saw atomic upward folds with a scanning tunneling microscope. However, the team at Zhangshengsheng was convinced that they made the hook-and-loop honeycomb structure, in part because the distance between the folds was in line with theoretical predictions.

Claisen said that the need to direct measurement of the lattice structure by X-ray diffraction, to determine the new material is tin not tin other combinations.

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