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SMIC 7nm process breakthrough

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SMIC 7nm process breakthrough

SMIC’s N+1 process, known as the benchmark for TSMC’s 7nm process, has recently achieved a new breakthrough.

On the same day that ZTE announced the commercialization of 7nm chips for 5G base stations. SMIC’s second-generation FinFET process also happened to reveal new developments.

On October 11th, IP and custom chip company Core Motion Technology has completed the world’s first chip tape out and test based on SMIC’s FinFET N+1 advanced process. All IP is made in China, and its functions have been tested for the first time.

SMIC 7nm process breakthrough

The so-called completion of chip tape out means that the process technology has a meaningful “yield rate”, and mass production can be attempted. SMIC Hong Kong stocks rose more than 10%, with a turnover of over 900 million Hong Kong dollars.

The successful tape-out is the result of the “strong cooperation” between SMIC and SMIC, which broke the N+1 process bottleneck. Since 2019, SMIC has invested tens of millions in optimized design while SMIC’s N+1 process has yet to mature, and invested its technical team to overcome difficulties throughout the process, successfully helping SMIC to break through the N+1 Process yield bottleneck.

At the end of March this year, SMIC also stated that advanced technology is the focus of SMIC’s development this year. Next, the company will turn to the next generation of technology-N+1 and N+2 generation FinFET process research and development.

The N+1 process is the code name of the second-generation advanced process after SMIC’s first-generation advanced process 14nm mass production. According to reports, compared with 14nm, the N+1 process has a greater breakthrough. The performance is improved by 20%, power consumption is reduced by 57%, and the logic area is reduced by 63%. After N+1, SMIC will also start to develop a higher performance N+2.

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Science

Tianwen-1 completed the fourth midway correction of its orbit and returned the first image of Mars

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At 20 o’clock on February 5, 2021, the engine of the first Mars exploration mission Tianwen-1 probe was ignited, and the fourth midway correction of the ground fire transfer section was successfully completed to ensure that Mars capture was carried out as planned.

Up to now, Tianwen-1 has been in orbit for about 197 days, about 184 million kilometers away from Earth, about 1.1 million kilometers away from Mars, and a flight mileage of about 465 million kilometers. The probe systems are in good condition.

Prior to this, Tianwen-1 acquired the first Martian image at a distance of about 2.2 million kilometers from Mars.

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The hotel industry in Greece is experiencing a cold winter, and the total hotel business last year fell 78% year-on-year

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Affected by the new crown pneumonia epidemic, the Greek hotel industry suffered heavy losses. The reporter recently visited several hotels randomly on the streets of Athens, most of which were closed. Some hotels that are still reluctantly operating are sluggish.

According to a recent report issued by the Greek Tourism Forecast and Research Institute, the total business volume of hotels in Greece in 2020 will be 1.831 billion euros, which is a 78% drop compared with 8.357 billion euros in 2019. Of the 3,965 hotels operating throughout the year, only 59% (2328) chose to reopen after Greece’s first total blockade in 2020, and 63% of the reopened hotels were forced to reopen before the end of 2020. As of the end of 2020, only 863 hotels in Greece remain in operation throughout the year, accounting for 22% of the total.

Although the Greek government has introduced financial incentives and subsidies to support the hotel industry, Alexandros Vasilikos, chairman of the Hellenic Hotel Association, pointed out that the Greek hotel industry will face many uncertainties and risks in 2021. He emphasized that continuing to strengthen liquidity is what the hotel industry urgently needs to do at present. This is not only related to the interests of the industry itself and employees, but also related to the interests of the Greek national economy and related supporting industries.

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The potential mass range of dark matter is narrowed, helping to focus the search area

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According to a report by the physicist organization network on the 27th, British scientists used the fact that gravity acts on dark matter to fundamentally calculate the mass range of dark matter for the first time. This range is much narrower than previously thought. The latest research has narrowed the range of potential masses of dark matter particles and also limited the search range for future dark matter “catchers”. It will also help scientists discover potential new forces in the future.

Dark matter does not emit light, emit electromagnetic waves, does not participate in electromagnetic interactions, and cannot be directly “seen” with any optical or electromagnetic wave observation equipment. Scientists have confirmed its existence through the effect of dark matter on galaxies. The result of the cosmic microwave background radiation observation experiment gives the proportion of dark matter in the total amount of cosmic matter. In the universe, ordinary matter accounts for only 4.9%, dark matter accounts for 26.8%, and dark energy accounts for 68.3%. Dark energy and dark matter are also considered to be two dark clouds in the physics sky at the beginning of the 21st century.

In the latest study, the research team led by Professor Xavier Kalmot of the School of Mathematics and Physical Sciences at the University of Sussex assumed that gravity is the only force acting on dark matter, and calculated that the mass of dark matter particles is between Between 10-3eV (electron volt) and 107eV, it is much narrower than the theoretically expected 10-24eV to 1028eV.

“This is the first time anyone has used quantum gravity to calculate the mass range of dark matter,” Carmott said. This study shows that unless there is a hitherto unknown force affecting it, dark matter cannot be like some theories. It is said to be “ultralight” or “overweight”.

The researchers believe that this research will benefit physicists in two ways: one is to focus on the search area of dark matter; the other is to help reveal whether there are mysterious unknown forces in the universe-if the mass of dark matter is found to exceed in the future The range predicted by the Sussex team indicates that dark matter is affected by other forces in addition to gravity.

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