Wheat futures ended a bit lower this week.

Wheat futures ended a bit lower this week.

Postby missdior » 2018年May月11日(Fri) 17:38

CANBERRA Josh Malone Limited Jersey , July 21 (Xinhua) -- Australian scientists have successfully used household sticky tape to help build ultra-thin and lightweight solar cells that could improve the way solar energy is collected.

Solar cells are used to collect energy from the sun to convert into electrical power for portable devices such as lights, radios and computers.

Scientists at the Australian National University (ANU) in Canberra used sticky tape to create single-atom thick layers, termed phosphorene Carl Lawson Limited Jersey , in the construction of the cells. This was done in the same simple way as the Nobel Prize winning discovery of graphene.

Unlike graphene, phosphorene works as a semiconductor but is thinner and lighter than silicon which is the basis of current electronics technology.

"Because phosphorene is so thin and light, it creates possibilities for making lots of interesting devices Jordan Willis Limited Jersey , such as LEDs or solar cells," said lead researcher Dr Yuerui (Larry) Lu, from ANU.

"It shows very promising light emission properties."

Lu said the household tape was used to peel thinner and thinner layers of crystals from the black crystalline form of phosphorus.

As well as creating much thinner and lighter semiconductors than silicon Joe Mixon Limited Jersey , phosphorene has light emission properties that vary widely with the thickness of the layers, which enables much more flexibility for manufacturing.

"This property has never been reported before in any other material," said Dr Lu Clayton Fejedelem Bengals Jersey , from ANU's College of Engineering and Computer Science, whose study is published in the Nature serial journal Light: Science and Applications.

"By changing the number of layers we can tightly control the band gap, which determines the material's properties Trey Hopkins Bengals Jersey , such as the color of LED it would make.

"You can see quite clearly under the microscope the different colors of the sample, which tells you how many layers are there," said Lu.

The behavior of phosphorene in thin layers was superior to silicon Randy Bullock Bengals Jersey , Lu said. "Phosphorene's surface states are minimized, unlike silicon, whose surface states are serious and prevent it being used in such a thin state."

(Source: Xinhua)

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BISHKEK, Oct. 10 (Xinhua) -- Chinese companies provided great support to Kyrgyzstan in staging the World Nomad Games last month, head of the Secretariat Nurdin Sultanbaev told Xinhua on Monday.

Sultanbaev said, in particular, the China's Huahe International business consulting company produced souvenir products of the Games, including key rings, thermos, plush toys and etc..

"The Chinese company manufactured all these souvenirs in big amount, and even today one can buy these souvenirs in shops," he said.

The Second World Nomad Games was held in Kyrgyzstan on September 3-8 with the participation of over 1,500 athletes from 62 countries, competing in 26 events. The first Nomad Games was held in 2014.

China won four bronze medals at the Games.

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