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18

2023-05

Intelligent ultra-high-definition cloud interconnection chip

Founded in November 2018, Zhuhai Haiqi Semiconductor is committed to the design and development of complex digital-analog hybrid SOC chips. The intelligent ultra-high-definition cloud interconnection chip has ultra-high compatibility, the screen display screen resolution can reach 11KP8, and the project products can achieve smaller size while ensuring high definition and low latency.

2023-05-18

Intelligent ultra-high-definition cloud interconnection chip

18

2023-05

Industry Watch| Gold magnetic Hainer: Nanocrystalline core "C position out of the circle"

"Golden Magnet Hainer focuses on the research of nanocrystalline new materials, and its technology won the first prize of the national finals in the 2020th National 'Nano Star' Competition in <> and was rated as the international leading level. It is hoped that it will seize the opportunity and use the real power of scientific innovation and technological breakthroughs to contribute to the development of China's high-tech materials and scientific and technological economy. ” This is the message written by Zhao Yuliang, academician of the Chinese Academy of Sciences and director of the National Center for Nanoscience, in November 2020 for Jinci Haina.

2023-05-18

Industry Watch| Gold magnetic Hainer: Nanocrystalline core

18

2023-05

The research group reached a cooperation agreement with Guangzhou Jinci Haina New Material Technology Co., Ltd

In September 2018, the research group reached a cooperation agreement with Guangzhou Jinci Haina New Material Technology Co., Ltd. to establish a joint research center for magnetic materials and devices, aiming to develop high-performance amorphous nanocrystalline soft magnetic materials and devices. Guangzhou Jinci Haina New Material Technology Co., Ltd. was established in 9, located in Huadu District, Guangzhou, mainly engaged in the research and development and manufacturing of electronic components based on amorphous nanocrystalline soft magnetic alloy. The research group will carry out all-round close cooperation with the company in technical research, project application and talent training.

2023-05-18

The research group reached a cooperation agreement with Guangzhou Jinci Haina New Material Technology Co., Ltd

18

2023-05

Competition ended successfully

On September 9th, the finals of the 27th National "Nano Star" Innovation and Entrepreneurship Competition, the highest innovation competition in the field of nanotechnology in China, ended successfully in Huangpu District and Guangzhou High-tech Zone. The nano-optical device project team led by Dr. Li Xiaojun of our institute won the first prize of the Future Enterprise Group!

2023-05-18

Competition ended successfully

18

2023-05

Stick to what you love and keep walking! This engineering tyrant aspires to create the era of China's "core"

On October 10, the Department of Education of Guangdong Province announced the results of the "11 Guangdong College Student Person of the Year" selection and display activity, and Wang Yongfei, Ph.D. of the School of Materials Science and Engineering, South China University of Technology, was awarded the title of "2020 Guangdong College Student Person of the Year".

2023-05-18

Stick to what you love and keep walking! This engineering tyrant aspires to create the era of China's

18

2023-05

Wang Yongfei, a student of South China University of Technology, won the "Innovation and Entrepreneurship Talent Award" of the Ministry of Education

Recently, the 2018th Teaching Master Award, Outstanding Teaching Award and Innovation and Entrepreneurship Talent Award Ceremony was held in Chongqing University. Wang Yongfei, a 2022 doctoral student at the School of Materials Science and Engineering of South China University of Technology, the gold medal of the <>th China International "Internet +" College Students Innovation and Entrepreneurship Competition, and the founder of Guangzhou Golden Magnet Haina New Material Technology Co., Ltd., won the <> "Innovation and Entrepreneurship Talent Award". Vice Principal Li Zheng attended the award ceremony.

2023-05-18

Wang Yongfei, a student of South China University of Technology, won the

18

2023-05

Application of filter inductor in power supply anti-interference

With the popularization and development of digital circuits of switching power supplies, the electromagnetic waves radiated and leaked by electronic equipment not only seriously interfere with the normal operation of other electronic equipment, resulting in equipment dysfunction, transmission errors, control failures, but also threaten human health and safety, and have become an invisible pollution, not inferior to the harm of tangible pollution such as water, air, and noise. Therefore, reducing electromagnetic interference (EMI) in electronic devices has become a concern of the world electronics industry. To this end, the relevant decree of the relevant EMC Commission of the European Community came into force on January 1992, 1, which lasted 1 It finally entered into force on 4 January 1996. The decree points out that all products that do not meet the provisions of European and international EMC standards are not allowed to enter the market for sale, and the violation is severely punished, while taking EMC certification and electrical safety certification as the primary conditions for some product certification. This move caused a huge shock in the world electronics market, and EMC became an important indicator affecting international trade. In order to be in line with international standards, China has also successively formulated relevant EMC regulations. To this end, China has held electromagnetic compatibility standards and demonstration meetings many times, and it is recommended that electronic equipment circulating on the market since January 1, 1 must formulate and design suppression measures against radio interference, and place suppression components. So that the electromagnetic interference generated does not exceed the level specified in the standard. From January 1997, 1, all products entering the market must have the EMC mark. This is the first step for China's electronic products to participate in the international market competition.

2023-05-18

Application of filter inductor in power supply anti-interference

18

2023-05

The principle of making Si-rich FeSiBCuNb soft magnetic alloy induced by Annealing treatment

Amorphous and nanocrystalline soft magnetic alloys, as a new generation of energy-saving and environmentally friendly materials, have the advantages of low coercivity Hc, high permeability μ, good frequency characteristics, and high saturation magnetization Ms, which are widely used in power electronics fields such as inductors, magnetic amplifiers, and transformers. A typical composition Fe-Si-B-Cu-Nb (named as Finemet) was proposed by Yoshizawa, who pointed out that nano-grains with a size of about 10 nm are uniformly embedded in the amorphous matrix to form a two-phase composite structure. According to the theory of ferromagnetism, the magnetization mechanism of nanocrystalline materials mainly depends on the local magnetocrystalline anisotropy and ferromagnetic exchange interaction, which are closely related to the microstructure. Suzuki supposed that nanocrystals are randomly precipitated from the amorphous matrix after heat treatment, resulting in randomly oriented magnetic anisotropy. Meanwhile, the exchange coupling between different crystal grains induces the magnetic moment to be arranged in parallel, preventing the magnetization from proceeding along the easy magnetization direction of each crystal grain . The magnetocrystalline anisotropy K1 is averaged by multiple crystal grains, resulting in the low effective anisotropy <K>. Under this model, if the magnetization process is considered to be the uniform rotation process of spins, the permeability and coercivity of the material are only related to the <K>. Thus, when the grain size D is smaller than the ferromagnetic exchange length Lex, the grain refinement is conducive to achieving excellent soft magnetic properties.

2023-05-18

The principle of making Si-rich FeSiBCuNb soft magnetic alloy induced by Annealing treatment

18

2023-05

How to choose nanocrystalline core for EMI filtering?

When choosing nanocrystalline core for common mode choke, you should have expected impedance value or inductance value in advance.

2023-05-18

How to choose nanocrystalline core for EMI filtering?

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