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Highly elastic OLED created in South Korea Highly elastic OLED created in South Korea

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Highly elastic OLED created in South Korea

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Researchers at Yonsei University in Seoul have developed an organic light-emitting diode (OLED) that stretches easily over a wide range. The secret is that everything from the substrate and electrodes to the OLED stack is made of resilient materials.

The researchers say this is the first time an OLED has been built from stretchable components. Previous attempts have relied on the integration of rigid OLEDs on a stretchable substrate.

1615806411 164 Highly elastic OLED created in South Korea

Elastic components use materials such as silicone rubber, silver nanowires, and newly developed OLED stack materials. All of them were applied to the substrate in the form of solutions. According to the project participants, the OLED’s performance and performance remained good even after 200 cycles of stretching by 40% followed by compression. In this case, even significant stretching did not lead to damage. It is important that the LED can withstand not only stretching in one direction, but also arbitrary deformations. The researchers were able to produce LEDs in three primary colors, so the described technology is suitable for displays. Now the Institute’s specialists are working to bring the development closer to commercialization.

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Brazil wants to tokenize gold and use blockchain

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Brazil wants to tokenize gold and use blockchain

Member of the Brazilian Chamber of Deputies Joenia Wapichana proposed to tokenize gold and use blockchain to prevent illegal mining and sale of this precious metal.

Brazil wants to tokenize gold and use blockchain

According to Vapichana, the country should be able to account for gold mining activities on its territory. The bill introduces new legislation aimed at transactions with precious metals and their transportation.

The bill will also help fight illegal mining activities in the country.

The legislator noted that about half of the gold in the country is mined illegally. She added that illegal mining activities have worsened the environmental impact of the mining industry.

These operations are accompanied by mercury pollution, violence and deforestation, which has been frequently reported in the national and international press, as well as civil society organizations that fight to protect the forest and guarantee the rights of indigenous peoples.

Therefore, Vapishana proposed to create a single system based on the blockchain, in which information about the mined gold will be entered, and through which its sale will be carried out. To do this, it is necessary to make the necessary amendments to the legislation of the country, the deputy added.

The idea of ​​tokenizing natural resources also came up this summer with the government of the Central African Republic (CAR). It believes that this will attract funds from foreign investors and accelerate the adoption of crypto assets in the country. In 2020, Circle CEO Jeremy Allaire suggested that within a few years, asset tokenization will gain popularity as it is an effective way to increase liquidity.

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US and European physicists have created an efficient plant for the production of oxygen on Mars

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US and European physicists have created an efficient plant for

European and American physicists have developed a plasma facility that allows extracting oxygen from carbon dioxide molecules present in the Martian atmosphere. This was reported by the press service of the American Physical Institute.

US and European physicists have created an efficient plant for the production of oxygen on Mars

We assumed that the collision of high-energy electrons with CO molecules2 will lead to the decomposition of this substance or to the release of heat. This energy can also be used to break down carbon dioxide. Together with colleagues from France and the Netherlands, we were able to experimentally confirm these hypotheses.”, – said associate professor of the University of Lisbon (Portugal) Vasco Guerra.

In the past six years, at the suggestion of Elon Musk, scientists have begun to seriously think about how humanity can begin the process of colonizing Mars and other potentially habitable planets. To do this, as the researchers now suggest, two problems need to be solved: to learn how to produce energy, as well as oxygen, water and food, using local resources.

As Guerra and his colleagues note, oxygen production will be one of the most important and energy-intensive tasks that the first colonists on Mars will face. To solve it, scientists are developing systems that can extract oxygen from the Martian air and soil. One such facility, MOXIE, was installed aboard the Perseverance rover and successfully tested on Mars in April last year.

MOXIE absorbs carbon dioxide, heats it up to 800 degrees Celsius and passes it through a special ceramic material that breaks down CO2 to oxygen (O2) and carbon monoxide (CO). European physicists and their American colleagues have developed an alternative approach that markedly outperforms the MOXIE system in terms of compactness and oxygen production efficiency.

The installation created by scientists relies in its work on the fact that CO molecules2 become much less stable if they are placed inside a rarefied plasma, the electrons inside of which have a much higher energy than ions and neutral molecules. In theory, this allows the splitting of CO2 to carbon monoxide and oxygen if CO molecules2 will often encounter electron beams with well-defined properties.

Guided by this idea, Guerra and his colleagues conducted a series of experiments during which they studied the interactions of oxygen, carbon monoxide and carbon dioxide inside an inhomogeneous plasma. These experiments helped scientists to choose such operating parameters, in which oxygen almost did not combine with carbon monoxide and did not form new CO molecules.2.

As the researchers note, the production of oxygen using plasma does not require heating the Martian air to temperatures exceeding 30-40 degrees Celsius, as well as high pressure. In the future, this will significantly reduce the cost of energy and resources for the production of oxygen on Mars, the physicists summed up.

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The newest navigation satellite Glonass-K2 will be launched at the end of the year. It will last 10 years and provide a navigation accuracy of less than 30 cm.

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The newest navigation satellite Glonass K2 will be launched at the

The fourth-generation navigation device Glonass-K2 will be launched at the end of the year. This was announced by the first deputy director general of Roscosmos for the development of the orbital constellation and promising projects, Alexander Ivanov.

The newest navigation satellite Glonass-K2 will be launched at the end of the year.  It will last 10 years and provide a navigation accuracy of less than 30 cm.

“If we take the orbital constellation, the well-known constellation of the GLONASS system. The fourth-generation device Glonass-K2 is already being prepared for launch at the end of this year, Ivanov said at the Army-2022 forum.

The Information Satellite Systems named after M.F. Reshetnev reported that there are five Glonass-K satellites at different stages of production in the workshops of the enterprise. Unlike its predecessors, Glonass-K have an extended service life of up to 10 years and improved performance. In addition to the basic navigation functions, they are also capable of transmitting signals from the international COSPAS-SARSAT system for search and rescue of those in distress around the world. In October last year, Sergey Karutin, general designer of the GLONASS system, said that Glonass-K2 would provide navigation accuracy of less than 30 cm.

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