云南高校图书馆联盟文献共享服务平台- FRACTAL

FRACTAL: 作品数：974被引量：1491H指数：15; 导出分析报告; 相关领域：理学更多>>; 相关作者：李后强赵华明谢和平盛京邢修三更多>>; 相关机构：中国科学院北京理工大学四川大学武汉大学更多>>; 相关期刊：更多>>; 相关基金：国家自然科学基金国家重点基础研究发展计划中国博士后科学基金国家教育部博士点基金更多>>

Higher-order topological phase in an acoustic fractal lattice被引量：4: 《Science Bulletin》2022年第20期2040-2044,M0003,共6页Junkai Li Qingyang Mo Jian-Hua Jiang Zhaoju Yang; the support of the National Natural Science Foundation of China(12174339);Fundamental Research Funds for the Central Universities。; Higher-order topological insulators(HOTIs)are a newly devel-oped topological phase which hosts higher-codimensional topolog-ical states with lower dimensionality localized at the“boundaries of boundaries”[1,2].There...; 关键词：拓扑绝缘体分数电荷实验观察声学测量余维数人工制造分形模型内角

Observation of fractal higher-order topological states in acoustic metamaterials被引量：3: 《Science Bulletin》2022年第20期2069-2075,M0004,共8页Shengjie Zheng Xianfeng Man Ze-Lin Kong Zhi-Kang Lin Guiju Duan Ning Chen Dejie Yu Jian-Hua Jiang Baizhan Xia; supported by the National Natural Science Foundation of China(12125504,12072108,51621004,and 51905162);the Priority Academic Program Development(PAPD)of Jiangsu Higher Education Institutions;the Hunan Provincial Natural Science Foundation of China(2021JJ40626);。; Topological phases of matter have been extensively investigated in solid-state materials and classical wave systems with integer dimensions. However, topological states in non-integer dimensions remain almost unexplor...; 关键词：Higher-order topological states Topological fractals Sierpinski carpet Fractal dimensions Acoustic metamaterials

Direct observation of atomic-level fractal structure in a metallic glass membrane被引量：1: 《Science Bulletin》2021年第13期1312-1318,M0004,共8页Hongyu Jiang Jiyu Xu Qinghua Zhang Qian Yu Laiquan Shen Ming Liu Yitao Sun Chengrong Cao Dong Su Haiyang Bai Sheng Meng Baoan Sun Lin Gu Weihua Wang; This work was supported by the National Natural Science Foundation of China(51672307,51801230,51822107,and 51671121);the National Key Research and Development Program of China(2018YFA0703603);the National Natural Science Foundation of Guangdong Province(2019B030302010);the Strategic Priority Research Program of the Chinese Academy of Sciences(XDB30000000);Beijing Natural Science Foundation(Z190010).; Determination and conceptualization of atomic structures of metallic glasses or amorphous alloys remain a grand challenge.Structural models proposed for bulk metallic glasses are still controversial owing to experimen...; 关键词：Metallic glass Atomic-resolution imaging Fractal packing Percolation theory

Growth kinematics of fractal super snowflakes被引量：1: 《Chinese Science Bulletin》2010年第7期573-580,共8页YIN YaJun YANG Fan FAN QinShan; supported by the National Natural Science Foundation of China(Grant No.10872114);Natural Science Foundation of Jiangsu Province(Grant No.BK2008370); Based on the recent research progress in fractal super fibers,the growth kinematics(or pattern kinematics) of(6+1) -circle fractal super fiber with snowflake-like cross section(abbreviated as"fractal super snowflake")...; 关键词：分形生长运动学雪花超级纤维速度比密度比相似比空间分布

Fractal classification and natural classification of coal pore structure based on migration of coal bed methane被引量：17: 《Chinese Science Bulletin》2005年第S1期66-71,共6页Xuehai Fu Yong Qin Wanhong Zhang Chongtao Wei Rongfu Zhou; According to the data of 146 coal samples measured by mercury penetration, coal pores are classified into two levels of <65 nm diffusion pore and >65 nm seeping pore by fractal method based on the characteristic...; 关键词：COAL PORE structure FRACTAL CLASSIFICATION COAL BED methane NATURAL classification.

Fractal characteristics of round jets in steady crossflow被引量：1: 《Chinese Science Bulletin》1999年第15期1366-1369,共4页Yuliang Li Chaoquan Chen Chunbo Jiang; The fractal dimensions of turbulent round jets in steady crossflow has been analyzed by using planar laser-induced fluorescence (PLIF) method. The relation between the fractal dimension and the momentum ratio, the var...; 关键词：STEADY CROSSFLOW TURBULENT JET measurement of FRACTAL dimension.

Net measure properties of Moran sets and applications被引量：3: 《Chinese Science Bulletin》1998年第5期386-389,共4页Hui Rao Zhiying Wen Jun Wu; ThisworkwassupportedbytheNational"ClimbingProject"andtheNationalNaturalScienceFoundationofChina (GrantNo .196 0 10 31); The Hausdorff and packing dimensions for a class of Moran sets are obtained.; 关键词：FRACTAL MORAN SET net MEASURE dimension.

Category and dimension of compact subsets of R^n: 《Chinese Science Bulletin》1997年第20期1680-1683,共4页Feng, DJ Wu, J; IN fractal geometry, two classes of sets play important roles. One is the regular set (the setHausdorff and packing dimension coincide), the other is the set whose Bouligand dimensionexists. A natural question is how ...; 关键词：FRACTAL DIMENSION category.

Characteristics of EM scattering on dielectric fractal surface: 《Chinese Science Bulletin》1997年第6期523-526,共4页Wang, MX Li, J Ren, L; The regular and smooth objects are always studied in conventional geometry. But very rough and irregular objects which have self-similarity, the fractal structure, are efficiently solved by fractal geometry. The self-...; 关键词：EM SCATTERING FRACTAL structure ROUGH surface KIRCHHOFF approximation.

Observation of fractal patterns on superconducting Bi_2Sr_2Ca_1Cu_2O_(7-x) films on silicon by AFM: 《Chinese Science Bulletin》1997年第6期526-528,共3页QIAN Wensheng, LIU Rong and WEI TongIiMicroelectronics Center, Southeast University, Nanjing 210096, China; SUPERCONDUCTING Bi₂Sr₂Ca₁CU₂O_7-x（BSCCO） films have been prepared in-situ on Si substrates with yttria stabilized zirconia （YSZ） buffer layers by rf magnetron ...; 关键词：FRACTAL BSCCO films.

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