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relationship between image intensity and crystal thickness for the first time, and revealed the law of changes in the intensity of different atomic images. , Is the theoretical basis of the above-mentioned image processing technology. Under the guidance of this theory, Li
Fanghua et al. observed lithium atoms in crystals for the first time experimentally. In addition, she participated in the early research of high-temperature superconducting materials by means of high-resolution electron microscopy, and was one of the first groups in the world to report the presence or absence of commensurate modulation structures of bismuth superconductors.
417:. In September, she entered Lingnan University. Because the teachers often use English to give lectures, she often consults English reference books after class, so she improves her English reading ability. In October, Guangzhou was liberated and public schools opened, and she transferred to the Department of Astronomy at Sun Yat-Sen University. But because of frequent suspension of classes and drumming and going to the street to do political propaganda, she wanted to change to a school with more studies.
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While studying in Japan in the 1980s, Li
Fanghua summarized new experimental rules and developed a method for determining the position of light atoms. On this basis, after returning to China, she proposed a new image contrast theory: "pseudo-weak phase object approximation". This theory clarified the
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In the 1970s, Li
Fanghua and Fan Haifu cooperated to explore the combination of diffraction methods and high-resolution electron microscopy, and created a new image processing theory and technology in high-resolution electron microscopy. Later, she and her students established an unwinding processing
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In 1985, Li
Fanghua deduced a new and practical approximate analytical expression for high-resolution image intensity, established a practical image contrast theory, and solved the theoretical basis for the application of electronic crystallographic image processing in practice. Her research promotes
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For the newly developed field emission electron microscope, Li
Fanghua proposed a new research direction for measuring crystal defects with atomic resolution. At present, she has successfully measured the 60-degree dislocation at the SiGe/Si epitaxial film interface into two incomplete dislocations
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In 2002, at the time of her 70th birthday, the academic journal "Ultramicroscopy" of the
International Society for Electron Microscopy published a special issue to celebrate her. 20 years ago, working photos in the conference room of the Institute of Physics of the Chinese Academy of Sciences, with
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In 1960, Shi Ruwei (then director of the
Institute of Physics, Chinese Academy of Sciences) arranged for Li Fanghua to independently carry out electron diffraction research, so that she could take the scientific knowledge learned in the Soviet Union into China. "Single crystal electron diffraction"
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In 1952, the state selected students from the second year of colleges and universities to take the exam for studying abroad in the Soviet Union. Wuhan
University recommended Li Fanghua to take the exam and was admitted. In March, Li Fanghua entered the Preparatory Department of Beijing Russian
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The research team led by Li
Fanghua first discovered and reported the almost continuous transition process between quasicrystals and crystals, and she gave a theoretical explanation. Li Fanghua used the phase sub-strain field to derive some formulas reflecting the relationship between the
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In the early 1960s, Li
Fanghua first carried out electron diffraction in China to determine the structure of a single crystal. In China, he determined the position of hydrogen atoms in the crystal for the first time. The relevant literature is still cited by foreign colleagues.
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In 1938, her mother took her elder brother, younger brother and her back to Hong Kong alone for the sake of her children’s studies. One year later, she moved to Shanghai with her neighbors. Three years later, she moved to Beijing’s grandmother’s home. Beijing No. 56 Middle
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quasicrystal and the crystal, and on this basis, proposed a new method to determine the structure of the quasicrystal, as well as the determination of the local phase sub-strain in the quasicrystal. method. And successfully applied to Al-Cu-Li and Al-Mn-Si quasicrystals.
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Academician Li Fanghua on the right and Academician Fan Haifu on the second. Fan Haifu is an academician of the Chinese Academy of Sciences and an academician of the Third World Academy of Sciences. He is also the husband of Academician Li Fanghua.
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technology based on the principle of maximum entropy. It provides an important way to determine the tiny crystal structure. It has been successfully applied to determine the crystal structure of materials such as high-temperature superconductors.
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the development of related disciplines and provides crystal structure information of new materials, which helps to draw the laws of the relationship between material properties, structure and technology. Her research content includes:
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In 1984, Li Fanghua's research group won the second prize of the Chinese Academy of Sciences Scientific and Technological Achievement Award with the project "The establishment of lattice image and direct observation of crystal
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In 1955, Li Fanghua was in teacher Mi. Asia. Under the guidance of Rums (М.Α.Яумшь), he began to prepare his graduation thesis, the title of which was "Study on Electron Diffraction of In-situ Evaporated Bismuth Metal Thin
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In 2009, Li Fanghua won the He Liang He Li Foundation Science and Technology Progress Award; the monograph "Electronic Crystallography and Image Processing" written in the same year was published.
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of 90 degrees and 30 degrees, and a piece of stacking fault sandwiched between them. This is also the first report on the defect of atomic resolution at the interface of SiGe/Si epitaxial film.
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Li Fanghua was born in Hong Kong in 1932. Because his father was a business partner in Hong Kong, he settled in Hong Kong. His father Li Jiong participated in the
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In 1947, her mother took her and her younger brother back to Guangzhou, and her father arranged for her to board the second grade of Peidao Girls’ High School.
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ore and bastnaesium ore, hoping to use Japanese super-high resolution There are new discoveries in domestic minerals by the electron microscope.
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Language School, specializing in Russian. In the autumn of the same year, I went to the Soviet Union and entered the Department of Physics of
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In 1992, Li Fanghua won the Hashimoto First Jiro Award (personal award) from the Chinese Society of Electron Microscopy.
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In 1956, Li Fanghua graduated from the Department of Physics of Leningrad University in the Soviet Union.
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In 1996, Li Fanghua served as the chairman of the Chinese Society of Electron Microscopy (until 2000).
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262:; 6 January 1932 – 24 January 2020) was a Hong Kong-born Chinese physicist. She was a member of the
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In 1998, Li Fanghua was elected as an academician of the Third World Academy of Sciences.
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In 1993, Li Fanghua was elected as an academician of the Chinese Academy of Sciences.
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In 1991, Li Fanghua won the Ye Qisun Physics Prize of the Chinese Physical Society.
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in his early years and served as a major general of the Fourth Army of the
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In October 1982, Li Fanghua went to the Department of Applied Physics,
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High-resolution electron microscopy and electronic crystallography
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In 1950, Li Fanghua was admitted to the Department of Physics of
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and was the first Chinese scientist to receive the award.
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and China Union of Crystallography, and an editor of the
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L'Oréal-UNESCO Awards for Women in Science laureates
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604:"贺李方华院士获"联合国教科文组织世界杰出女科学家成就奖"报告会举行"
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16:Chinese physicist (1932–2020)
739:"人间失君少芳华-沉痛悼念本刊编委会副主任李方华院士！"
452:structure analysis research.
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659:"46位科技人员获2009年度何梁何利基金奖"
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293:Chinese Physics Letter
287:J. Electron Microscopy
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712:"中科院院士李方华逝世 享年88岁"
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79:(2020-01-24)
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21:Chinese name
776:2020 deaths
771:1932 births
590:China Daily
474:structure".
369:Early years
305:Li won the
25:family name
765:Categories
565:References
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252:Li Fanghua
231:Lǐ Fānghuá
59:1932-01-06
40:Li Fanghua
745:. 科技创新与品牌
685:"研究员：李方华"
514:Fan Haifu
393:Province.
313:Biography
115:Fan Haifu
397:School).
19:In this
749:18 June
722:18 June
695:18 June
668:18 June
445:Films".
256:Chinese
87:, China
85:Beijing
332:is in
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139:Fields
127:(2003)
121:Awards
111:Spouse
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743:创新品牌网
716:凤凰网资讯
338:prose
751:2021
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697:2021
670:2021
626:Sina
334:list
74:Died
53:Born
260:李方华
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187:李方華
47:李方华
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