Focus on the development of new semiconductor materials in China and the United States: Japanese media laments Japan’s low sense of existence

The Japanese media said that carbon nanotube research is intended to replace silicon semiconductors, the field is mainly driven by universities and start-ups in The United States, while the discovery of carbon nanotubes in Japan is declining. According to the Japan Economic News on November 28, the diameter of about 1 nanometer carbon nanotubes were found to have light weight and strong characteristics, in terms of conductivity and other aspects of interesting properties, in 1991 by the Japanese University of Thecity, tenured professor Ofoshima in the Japan Electric Company (NEC) found.

Together with the spherical “Fullerene” and the flaky graphene, it became a representative material in the field of nanotechnology around 2000.

It is understood that in the field of nanotechnology research, carbon nanotubes are a very unique material, diameter only one-fifth of the diameter of human hair, can conduct heat, hardness is 50 times steel. In the field of storage, because of its non-volatile properties, carbon nanotubes are used as storage chips and do not erase the information stored on them even if a power outage is lost. In addition to reading and writing 1,000 times faster than regular flash memory, it also provides lower power consumption, more reliable and durable memory, and lower production costs.

According to the report, according to the carbon atom connection method, carbon nanotubes are divided into easy conductive metal type, as well as the same nature as silicon semiconductor type two. The research on its use as an electronic component was active at one time, but no significant progress has been made because it was not able to separate metal and semiconductor types smoothly.

Focus on the development of new semiconductor materials in China and the United States Japanese media laments Japan's low sense of existence

In 2016, Fujitsu Semiconductor, Fujitsu’s semiconductor subsidiary, reached an agreement with Nantero, a U.S.-based company, to develop and produce carbon nanotube memory.

Nantero of the United States, which has autonomous technology for precision-manufacturing carbon nanotubes, plans to produce test products with a capacity of 2MB-16MB by 2020, according to reports. The product competes with the current mainstream flash memory, which is known to consume less than a quarter of its power and can be used in a variety of information terminal devices.

Fujitsu Semiconductor’s omnibus minister, Agency Sato, said it “will be a storage component in the Internet of Things (IoT) era where all products are connected to the Internet of Things.”

Reported that the Massachusetts Institute of Technology in August integrated more than 14,000 carbon nanotubes, developed a CPU (central processing unit) core part of the circuit. It also drives a simple program.

“This is a landmark achievement, showing a theoretically feasible idea, ” commented Ichiro Idan, a professor at Nagoya University who is familiar with carbon materials. It added that in the future, if the carbon nanotubes needed could be synthesized as desired, “further development is expected”.

In China, Beijing University and Tsinghua University are also developing computing elements using carbon nanotubes.

Reported that the application of carbon nanotubes in Japan is expected to have potential in lithium-ion battery electrode materials, etc. , in the field of materials more active. However, applied research in the electronics field has declined with the decline of domestic semiconductor manufacturers. “Even if there are excellent research at universities, there are no companies to make them practical, and there is not enough state support, ” says Shouxiong Tomura, an honorary researcher at the Japan Institute of Industrial Technology. Strong technology must be honed to avoid losing to overseas companies.”

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