The latest cousin of pyrographene, plumbene, came

2022-08-08
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Lead, the latest "cousin" of graphene, came out

according to the US daily science, two-dimensional materials composed of group 14 elements (the "cousin" of graphene) have attracted great attention in recent years because they have the potential to become topological insulators. Recently, Japanese scientists for the first time made the pure theoretical lead based two-dimensional honeycomb material plumbene a reality

the reason why these specifications attract attention is that the electronic orbital structure of lead and the resulting maximum energy band gap make it have the largest spin orbit interaction, which may make it a robust two-dimensional topological insulator. In this kind of insulator, quantum spin Hall effect may even occur above room temperature. Therefore, finding a reliable and low-cost method to synthesize plumbene has always been an important goal of material science research

in the latest research, the research team led by Nagoya University produced lead alkene by annealing the ultra-thin lead film on palladium, and the resulting planar material has a two-dimensional single-layer symbolic honeycomb structure

to their surprise, a palladium lead alloy film with bubble structure was formed under the lead olefin, which was similar to "will Phelan", which can take away the impurity structure in the oil circuit system through the cycle of lubricating oil (it divides the space into units with equal volume, and the stress at the right angle point rises to enough to produce initial tearing, so that the sum of the surface areas of the contact surfaces between them can be minimized). In 2008, the "Water Cube" of the National Swimming Center, the venue of the Beijing Olympic Games, was inspired by the "will Phelan" structure

the leader of the research group, Shunji naruhara, said that Beijing's "Water Cube" and "will Phelan" structures are not the first examples of mutual inspiration between architects and material scientists. He said: "In 1967, architect Buckminster Fuller designed a geodesic sphere for the Montreal World Expo, and later carbon 60 was named 'Buckminster Fuller' in his name. We can expect that venues for 2020 Tokyo Olympic Games, 2024 Paris Olympic Games, 2020 Dubai WorldExpo, the opportunity to start the operation of electromechanical control mechanical components, 2023 Buenos Aires WorldExpo, 2025 Osaka WorldExpo and other activities will be available It can show the new materials of the future and attract the attention of the world. "

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