Patents by Inventor Huarong Liu
Huarong Liu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11430625Abstract: The present disclosure provides an electron source operating method, the electron source including at least one emission site fixed on a tip, the emission site being a reaction product formed by metal atoms of a surface of the tip and gas molecules under an electric field, and the operating method comprises emitting electrons by controlling operating parameters of the electron source.Type: GrantFiled: December 27, 2018Date of Patent: August 30, 2022Assignee: 38th Research Institute, China Electronics Technology Group CorporationInventors: Huarong Liu, Xueming Jin, Yuxuan Qi, Xuehui Wang, Yijing Li, Junting Wang, Chunning Zheng, Qing Qian, Tingting Luo, Zhonglin Dong
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Patent number: 11373836Abstract: The present disclosure provides a method of manufacturing an electron source. The method includes forming one or more fixed emission sites on at least one needle tip, the fixed emission sites including a reaction product formed by metal atoms on a surface of the needle tip and gas molecules.Type: GrantFiled: December 27, 2018Date of Patent: June 28, 2022Assignee: 38th Research Institute, China Electronics Technology Group CorporationInventors: Xuehui Wang, Junting Wang, Xianbin Hu, Dizhi Chen, Guang Tang, Huarong Liu, Lei Zheng, Qing Qian, Chunning Zheng, Guochao Wang
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Patent number: 11315748Abstract: The present disclosure provides a method of regenerating an electron source, the electron source including at least one emission site fixed on a needle tip, and the emission site including a reaction product formed by metal atoms and gas molecules. The method includes regenerating the electron source in situ if an emission capability of the electron source satisfies a regeneration condition.Type: GrantFiled: December 27, 2018Date of Patent: April 26, 2022Assignee: 38th Research Institute, China Electronics Technology Group CorporationInventors: Xuehui Wang, Zhao Huang, Junting Wang, Tingting Luo, Huarong Liu, Xingjia Yao, Yijing Li, Lei Zheng, Chunning Zheng
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Patent number: 11189453Abstract: The present disclosure provides an electron source, including one or more tips, wherein at least one of the tips comprises one or more fixed emission sites, wherein at least one of the tips includes one or more fixed emission sites, wherein the emission sites includes a reaction product of metal atoms on a surface of the tip with gas molecules.Type: GrantFiled: December 26, 2018Date of Patent: November 30, 2021Assignee: 38th Research Institute, China Electronics Technology Group CorporationInventors: Huarong Liu, Junting Wang, Xuehui Wang, Yuxuan Qi, Xianbin Hu, Xueming Jin, Zhao Huang, Dizhi Chen, Yijing Li, Youyin Deng
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Publication number: 20210050176Abstract: The present disclosure provides a method of manufacturing an electron source. The method includes forming one or more fixed emission sites on at least one needle tip, the fixed emission sites including a reaction product formed by metal atoms on a surface of the needle tip and gas molecules.Type: ApplicationFiled: December 27, 2018Publication date: February 18, 2021Inventors: Xuehui WANG, Junting WANG, Xianbin HU, Dizhi CHEN, Guang TANG, Huarong LIU, Lei ZHENG, Qing QIAN, Chunning ZHENG, Guochao WANG
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Publication number: 20210050173Abstract: The present disclosure provides a method of regenerating an electron source, the electron source including at least one emission site fixed on a needle tip, and the emission site including a reaction product formed by metal atoms and gas molecules. The method includes regenerating the electron source in situ if an emission capability of the electron source satisfies a regeneration condition.Type: ApplicationFiled: December 27, 2018Publication date: February 18, 2021Inventors: Xuehui WANG, Zhao HUANG, Junting WANG, Tingting LUO, Huarong LIU, Xingjia YAO, Yijing LI, Lei ZHENG, Chunning ZHENG
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Publication number: 20210050175Abstract: The present disclosure provides an electron source, including one or more tips, wherein at least one of the tips comprises one or more fixed emission sites, wherein at least one of the tips includes one or more fixed emission sites, wherein the emission sites includes a reaction product of metal atoms on a surface of the tip with gas molecules.Type: ApplicationFiled: December 26, 2018Publication date: February 18, 2021Inventors: Huarong LIU, Junting WANG, Xuehui WANG, Yuxuan QI, Xianbin HU, Xueming JIN, Zhao HUANG, Dizhi CHEN, Yijing LI, Youyin DENG
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Publication number: 20210050172Abstract: The present disclosure provides an electron source operating method, the electron source including at least one emission site fixed on a tip, the emission site being a reaction product formed by metal atoms of a surface of the tip and gas molecules under an electric field, and the operating method comprises emitting electrons by controlling operating parameters of the electron source.Type: ApplicationFiled: December 27, 2018Publication date: February 18, 2021Inventors: Huarong LIU, Xueming JIN, Yuxuan QI, Xuehui WANG, Yijing LI, Junting WANG, Chunning ZHENG, Qing QIAN, Tingting LUO, Zhonglin DONG
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Patent number: 9023226Abstract: The present disclosure provides a method for manufacturing a particle source comprising: placing a metal wire in vacuum, introducing active gas, adjusting a temperature of the metal wire and applying a positive high voltage V to the metal wire to generate at a side of the head of the metal wire an etching zone in which field induced chemical etching (FICE) is performed; increasing by the FICE a surface electric field at the top of the metal wire head to be greater than a field evaporation electric field of material for the metal wire, so that metal atoms at the top of the metal wire are evaporated off; after the field evaporation is activated by the FICE, causing mutual adjustment between the FICE and the field evaporation, until the head of the metal wire has a shape of combination of a base and a tip on the base; and stopping the FICE and the field evaporation when the head of the metal wire takes a predetermine shape.Type: GrantFiled: May 4, 2012Date of Patent: May 5, 2015Assignee: 38th Research Institute, China Electronics Technology Group CorporationInventors: Huarong Liu, Ping Chen
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Patent number: 9017562Abstract: The present disclosure provides a method for manufacturing a particle source, comprising: placing a metal wire in vacuum, introducing active gas and catalyst gas, adjusting a temperature of the metal wire, and applying a positive high voltage V to the metal wire to dissociate the active gas at the surface of the metal wire, in order to generate at a peripheral surface of the head of the metal wire an etching zone in which field induced chemical etching (FICE) is performed; increasing by the FICE a surface electric field at the top of the metal wire head to be greater than the to evaporation field of the material for the metal wire, so that metal atoms at the wire apex are evaporated off; after the field evaporation is activated by the FICE, causing mutual adjustment between the FICE and the field evaporation, until the head of the metal wire has a shape of combination of a base and a tip on the base; and stopping the FICE and the field evaporation when the head of the metal wire takes a predetermine shape.Type: GrantFiled: December 26, 2012Date of Patent: April 28, 2015Assignee: 38th Research Institute, China Electronics Technology Group CorporationInventor: Huarong Liu
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Publication number: 20140077684Abstract: The present disclosure provides a method for manufacturing a particle source comprising: placing a metal wire in vacuum, introducing active gas, adjusting a temperature of the metal wire and applying a positive high voltage V to the metal wire to generate at a side of the head of the metal wire an etching zone in which field induced chemical etching (FICE) is performed; increasing by the FICE a surface electric field at the top of the metal wire head to be greater than a field evaporation electric field of material for the metal wire, so that metal atoms at the top of the metal wire are evaporated off; after the field evaporation is activated by the FICE, causing mutual adjustment between the FICE and the field evaporation, until the head of the metal wire has a shape of combination of a base and a tip on the base; and stopping the FICE and the field evaporation when the head of the metal wire takes a predetermine shape.Type: ApplicationFiled: May 4, 2012Publication date: March 20, 2014Applicant: 38th RESEARCH INSTITUTE, CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATIONInventors: Huarong Liu, Ping Chen
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Publication number: 20130020496Abstract: The present disclosure provides a particle source comprising a base having a gently-shaped top, and a tip formed as a tiny protrusion on the top of the base.Type: ApplicationFiled: May 4, 2012Publication date: January 24, 2013Applicant: 38th RESEARCH INSTITUTE, CHINA ELECTRONICS TECHNOLOGY FROUP CORPORATIONInventors: Huarong Liu, Ping Chen