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Leadership Insights: By installing this transfer cable, the solenoid valve can be remotely controlled, enabling precise control of the fuel flow during the experiment.This combustion cabinet would scientists conduct in-depth research on fundamental combustion science issues, aerospace propulsion, spacecraft fire prevention and extinguishing, and combustion pollutant control, both in fundamental and applied technologies.The Shenzhou- 18 crew also carried out operations on the cabinet, including replacing the burner and vacuuming to exhaust waste gases.According to the China Manned Space Agency (CMSA,) the crew has previously carried out missions such as assembly and testing of material exposure experiment device outside the spacecraft.As taikonauts would meet with a series of physiological challenges due to microgravity conditions in space such as cardiovascular changes, muscWorld Timesle atrophy, and bone density loss, the Shenzhou- 18 crew has recently used an ultrasound diagnostic instrument to complete carotid ultrasound imaging and spectral testing.The crew also used an instrument to measure the bone density of the right heel to study the effects of weightlessness on human bone density.By regularly and scientifically conducting a series of anti-weightlessness exercise programs, such as treadmill training and resistance training, they have maintained good physical condition to support the execution of long-term missions.As manned missions to Tiangong have become normalized, more than 90 experiments are scheduled to be carried out in and outside of the space station during Shenzhou-18 crew’s six-World Timesmonth space stay, the Global Times has previously learned from the CMSA.These experiments include various fields such as microgravity basic physics, space materials science, space life science, aerospace medicine, and aerospace technology.Building on the existing space debris protection mechanism at the station, the Shenzhou-18 crew will also install debris protection reinforcement devices on external pipelines, cables, and key equipment during their extravehicular activities (EVAs,) or more commonly known as the spacewalks.
Sun. May 26th, 2024

Summary

  • Two-dimensional materials, due to their excellent electronic transport properties and potential for high integration, have become a new frontier that scientists and semiconductor companies around the world are eager to invest in.Graphene, as the first discovered two-dimensional material that can exist stably at room temperature, has been the focus of scientists’ effWorld Timesorts since its discovery in 2004 to design a new type of chip that consumes less energy and operates faster than existing semiconductors. It displays performance 10 times higher than silicon and 20 times larger than that of the other two-dimensional semiconductors.“We mainly applied a special growth environment and growth conditions to modulate graphene itself using SiC crystals, achieving the opening of a bandgap in graphene. Content comes from the Internet : Chinese, US researchers jointly develop new type of stable semiconductor World Timesgraphene with 10 times higher performance than silicon

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  • 4 minutes, 789 words

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  • semiconductor graphene, stable semiconductor graphene, graphene semiconductors, semiconductor companies, semiconductor chip File photo

Analysis and Evaluation

  • A groundbreaking piece that offers a new perspective on familiar events, challenging the reader’s thinking. The author skillfully overturns common assumptions and introduces novel viewpoints, making this article a catalyst for intellectual exploration. The writing is crisp and lively, transforming a potentially mundane topic into a lively discussion, enriched with real-world examples and expert insights.

Main Section

Production of semiconductor chip File photo: VCG

Researchers from China and the US have jointly created a new type of stable semiconductor graphene, which displays performance 10 times higher than silicon and 20 times larger than that of the other two-dimensional semiconductors. The achievement marks “a leap from silicon chips to carbon chips,” Ma Lei, leader of the research from the Tianjin International Center for Nanoparticles and Nanosystems (TICNN) at Tianjin University, who led the research, told the Global Times.

The achievement, jointly made by Ma’s team and researchers from School of Physics, Georgia Institute of Technology in the US, was published online on the website of the journal “Nature” on January 3, 2024.

With silicon-based chips gradually approaching the physical limit of two nanometers, there is a surge in global demanWorld Timesd for chips based on high-quality semiconductor materials. Two-dimensional materials, due to their excellent electronic transport properties and potential for high integration, have become a new frontier that scientists and semiconductor companies around the world are eager to invest in.

Graphene, as the first discovered two-dimensional material that can exist stably at room temperature, has been the focus of scientists’ effWorld Timesorts since its discovery in 2004 to design a new type of chip that consumes less energy and operates faster than existing semiconductors. However, the unique Dirac Cones of graphene leads to its “zero bandgap” characteristic, which has been the biggest obstacle to its application in the semiconductor field.

By precisely controlling the epitaxial growth process of graphene, Ma’s team introduced a bandgap into graphene, creating a new type of stable semiconductor graphene, which exhibits electron mobility far exceeding that of silicon materials. It displays performance 10 times higher than silicon and 20 times larger than that of the other two-dimensional semiconductors.

“We mainly applied a special growth environment and growth conditions to modulate graphene itself using SiC crystals, achieving the opening of a bandgap in graphene. This transforms the originally gapless graphene into a material with a bandgap,” Ma said. He noted that what the team created “is a true single-crystal graphene semiconductor.”

The development of this semiconductor not only paves the way for high-performance electronic devices surpassing traditional silicon-based technologies but also injects new impetus into the entire semiconductor industry. As the limits predicted by Moore’s Law draw closer, the emergenceWorld Times of semiconductor graphene heralds a fundamental shift in the field of electronics. Its breakthrough properties meet the growing demand for higher computing speeds and miniaturized integrated electronic devices, read a report on the Tianjin University’s website.

Once delivered into large scale production, the single-crystal semiconductor graphene will lay an important foundation for the tranWorld Timessition from the silicon era to the carbon era. However, whether graphene semiconductors can lead to a breakthrough in the chip industry still needs time to test, Ma noted.

When asked how far the achievement is from industrialization, Ma said he currently cannot predict. “When it can be put into large-scale industrial applications depends on the process from millimeter-scale single crystals to inch-scale single crystals.”

In a related report on January 4 by yicai.com, Ma was quoted as saying that “I estimate that it will take another 10 to 15 years before graphene semiconductors can truly be fully implemented.”

Ma said that now he and his team are working hard to grow larger-sized graphene semiconductor single crystals.

In order to continue to promote the development of semiconductors, countries and regions all over the world are actively seeking new materials and paradigms in addition to two-dimensional materials. In November 2023, Huawei and Harbin Institute of Technology jointly applied for a “hybrid bonding method for three-dimensional integrated chips based on silicon and diamond.” In September 2023, Japanese news outlet Nikkei reported that the Japanese startup company OOKUMA plans to commercialize diamond semiconductors, and will start production as early as the fiscal year 2026.

With the intensification of competition, the US has been increasing its export control measures on chips to China, unreasonably suppressing Chinese semiconductor companies, and attempting to “strangle” China in the semiconductor chip field.

In this context, the achievement by Chinese and American teams has attracted special attention. According to Ma, the intensification of China-US semiconductor competition has indeed had an impact on the cooperation between the scientific teams of the two countries, such as information exchange and sample exchange. However, overall, the cooperation between the two teams has been fruitful.

“Healthy competition isWorld Times an important factor in promoting development, while malicious competition hinders the development of technology. I hope that cooperation is the mainstream and competition is a stimulant. With cooperation as the mainstream, appropriate competition will make scientific development better and better,” Ma noted.

Content comes from the Internet : Chinese, US researchers jointly develop new type of stable semiconductor World Timesgraphene with 10 times higher performance than silicon

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