• School of Materials Science and Engineering

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    HE Wanli

    Lecturer at Department of Materials Physics and Chemistry


    hewanli@mater.ustb.edu.cn

    +86-010-62333957

    Fushi Building, Room 605

    Available to act as adviser for international graduate student: Yes



    Biography 

    Dr. He WanLi is the Lecturer of the school of Materials Science and Engineering, and a researcher of the Department of Materials Physics and Chemistry at USTB. He holds a B. Eng. in Ligneous Material Science and Technology from Beijing Forestry University, and a Ph.D. in Materials Physics and Chemistry from the University of Science and Technology Beijing.


    Research Interests

    -Liquid crystal materials, Liquid crystal nanometer composite, Self-assembly materials, Flat panel display material

    -Light responsive liquid crystal material, Magnetic responsive liquid crystal material, Temperature sensitive liquid crystal material, Electric field sensitive liquid crystal material

    -Energy-saving Materials, liquid crystal photonic devices, Dye-sensitized Solar Cells, Near infrared dyes, Nonlinear optical liquid crystal material

    -Liquid crystalline polymer materials, Polymer dispersed liquid crystal materials, Polymer stabilized mesogenic phase materials


    Active Research Projects

    Title: “Preparation and properties of nano-particle /polymer/blue phase liquid crystal display composites”

    -Optimizing the molecular structure as well as the liquid crystal matrix material with wide blue phase range.

    -Exploring the responsive blue phase liquid crystal composite by doping magnetic response, light response and the electrical response of functional inorganic nano-particles.

    -Designing experiments to explore the relationship between the electro-optic properties and the doping nano-particles as well as the liquid crystal matrix.


    Title: “Preparation and electro-optical properties of the room-temperature hydrogen-bonded blue phase liquid crystal material”

    -Facilely optimizing the H-bonded mesogen structure as well as the liquid crystal matrix material with wide blue phase range and well electro-optical response performance.

    -Fast screening the analogous blue phase liquid crystal display material with wide blue phase range and well electro-optical response performance. 


    Published Research (English Only)

    [1]Wan Li He, Guo Hui Pan, Zhou Yang, Dong Yu Zhao, Guo Guang Niu, Wei Huang, Xiao Tao Yuan, Jin Bao Guo, Hui Cao, Huai Yang. Wide Blue Phase Range in a Hydrogen-Bonded Self-Assembled Complex of Chiral Fluoro-Substituted Benzoic Acid and Pyridine Derivative. Advanced Materials, 2009, 21(20): 2050-2053.

    [2]Wan Li He, Tao Liu, Zhou Yang, Dong Yu Zhao, Wei Huang, Hui  Cao, GuoJie Wang,Huai Yang. Facile synthesis and characterization of novel thermo-chromism cholesteryl-containing hydrogen-bonded liquid crystals. Chinese Chemical Letters, 2009, 20(11): 1303-1306.

    [3]Li Pei Zhang, Wan Li He, Xiao Tao Yuan, Wang Hu, Hui Cao, Huai Yang,Si Quan Zhu. Broadband reflection characteristic of polymer-stabilised cholesteric liquid crystal with pitch gradient induced by a hydrogen bond. Liquid Crystals, 2010, 37(10): 1275-1280.

    [4]Xiao Peng Cui, Lei Wang, Tao Liu, Xu Liu, Qi Huang, Qing Liu, Wan Li He, Guo Jie Wang, Zhou Yang,Huai Yang. Interfacial molecular self-assembled films of amphiphilic disclike molecules induce uniform alignment of nematic liquid crystals. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2011, 384(1-3): 186-193.

    [5]Wan Li He, Ling Wang, Zhou Yang, Huai Yang, Mo Wen Xie. Synthesis and optical behaviour of hydrogen-bonded liquid crystals based on a chiral pyridine derivative. Liquid Crystals, 2011, 38(10): 1217-1225.

    [6]Wan Li He*, Ling Wang, Le Wang, Xiao Peng Cui, Mo Wen Xie,Huai Yang. Wide Temperature Range Blue Phase Liquid Crystalline Materials. Progress in Chemistry, 2012, 24(1): 182-192.

    [7]Ling Wang, Wan Li He*, Xiao Xia, Man Wang, Meng Wang, Pang Yen Yang, Zhang Jian Zhou, Huai Yang, Hai Feng Yu,Yun Feng Lu. Low voltage and hysteresis-free blue phase liquid crystal dispersed by ferroelectric nanoparticles. Journal of Materials Chemistry, 2012, 22(37): 19629-19633.

    [8]Ling Wang, Wan Li He*, Xia Xiao, Fan Guo Meng, Yang Zhang, Pang Yen Yang, Li Ping Wang, Jiu Mei Xiao, Huai Yang,Yun Feng Lu. Hysteresis-Free Blue Phase Liquid Crystal Stabilized by ZnS Nanoparticles. Small, 2012, 8(14): 2189-2193.

    [9]Ling Wang, Wan Li He*, Xia Xiao, Qiong Yang, Bi Rong Li, Pang Yen Yang,Huai Yang. Wide blue phase range and electro-optical performances of liquid crystalline composites doped with thiophene-based mesogens. Journal of Materials Chemistry, 2012, 22(6): 2383-2386.

    [10]Ling Wang, Li Long Yu, Xia Xiao, Zhe Wang, Pang Yen Yang, Wan Li He*, Huai Yang. Effects of 1, 3, 4-oxadiazoles with different rigid cores on the thermal and electro-optical performances of liquid crystalline blue phases. Liquid Crystals, 2012, 39(5): 629-638.

    [11]Xing Wu Chen, Ling Wang, Chen Yue Li, Jiumei Xiao, Hang Jun Ding, Xin Liu, Xiao Guang Zhang, Wan Li He*, Huai Yang. Light-controllable reflection wavelength of blue phase liquid crystals doped with azobenzene-dimers. Chemical Communications, 2013, 49(86): 10097-10099.

    [12]Bi Rong Li, Wan Li He*, Ling Wang, Xia Xiao,Huai Yang. Effect of lateral fluoro substituents of rodlike tolane cyano mesogens on blue phase temperature ranges. Soft Matter, 2013, 9(4): 1172-1177.

    [13]Ling Wang, Wan Li He*, Meng Wang, Mei Ju Wei, Jian Sun, Xing Wu Chen,Huai Yang. Effects of symmetrically 2,5-disubstituted 1,3,4-oxadiazoles on the temperature range of liquid crystalline blue phases: a systematic study. Liquid Crystals, 2013, 40(3): 354-367.

    [14]Ling Wang, Wan Li He*, Qian Wang, Mei Na Yu, Xia Xiao, Yang Zhang, Mujtaba Ellahi, Dong Yu Zhao, Huai Yang,Lin Guo. Polymer-stabilized nanoparticle-enriched blue phase liquid crystals. Journal of Materials Chemistry C, 2013, 1(40): 6526-6531.

    [15]Xing Wu Chen, Ling Wang, Yin Jie Chen, Chen Yue Li, Guo Yan Hou, Xin Liu, Xiao Guang Zhang, Wan Li He*,Huai Yang. Broadband Reflection of Polymer-stabilized Chiral Nematic Liquid Crystals Induced by a Chiral Azobenzene Compound. Chemical Communications, 2014, 50(6): 691-694.

    [16]Wan Li He*, Mei-Ju Wei, Huai YANG, Zhou Yang, Hui Cao,Dong Wang. Flexible H-bonded liquid-crystals with wide enantiotropic blue phases. Physical Chemistry Chemical Physics, 2014, 16: 5622-5626.

    [17]Wan Li He*, Qi Huang, Zhou Yang, Hui Cao, Dong Wang,Huai Yang. Effect of bent-shape and calamitic-shape of hydrogen-bonded mesogens on the liquid crystalline properties. Liquid Crystals, 2015, 42(8): 1191-1200.


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