Huan-hua Wang,  Ph.D.

Principal Beamline Scientist, BSRF-1W1A, Insitute of High Energy Physics, Chinese Academy of Sciences;

                                              HEPS-LoDiSP, High Energy Photon Source, Chinese Academy of Science

Professor, School of Nuclear Science and Technology, University of Chinese Academy of Sciences


Telephone: 86-10-88235994

Address: 19-B Yuquan Rd., Shi-Jing-Shan District, Beijing

Postcode: 100049

Research Areas

  • Light-matter interactions and their applications in condensed matter physics: Methodology, instruments and applications of synchrotron radiation based X-rays scattering (XRS), diffraction (XRD), reflection (XRR), surface atomic pair distribution function (SPDF) and grazing-incidence photon correlation spectroscopy (GIXPCS); Applications of X-ray Photoelectron Xpectroscopy (XPS) and Angle-Resolved Photoemission Spectroscopy (ARPES); X-rays-matter interactions. Current focus is on the design and construction of the Low-Dimension Structure Probe (LODISP) beamline at High Energy Photon Source (HEPS).

  • Growth and characterization of thin films, heterojunctions and nanostructures: Growth mechanism and surface processes at atomic scale; Physical effects promoting layer-by-layer growth (for achieving atomic-scale smooth abrupt surface/interface used in miltilayer-based devices); Formation mechanisms of nanostructured pattern on surface (for achieving surface nanostructures used for catalysis, sensors and nanodevices). Current research is using evanescent waves to modulate thin-film growth for altering the island-like growth into layer-by-layer growth.

  • Structure¾Property¾Processing interplays of functional materials: Design, modification and synthesis of functional materials; Phase transition of low-dimensional metals; p-Type transparent conducting oxide thin films; Defect structures in compound semiconductors applied in light emitting diodes (LED) and solar cells. Current research focus is on the modulations of quantum phase transition of low-dimensional materials via dimensional effects  (thickness-induced quantum confinement effect, lattice symmetry changes, wave function dacay across the interface, etc.) and interfacial effects (surface/interface reconstruction, relaxation, strain, polarization, oxygen octahedron rotation, and so on).


Ph.D. in Optics, Institute of PhysicsChinese Academy of Sciences, 2001

B. S. in Physics, Department of PhysicsShandong University, 1995


Work Experience

Visiting scientist, Canadian Light Source, Feb.2014-Jun. 2014 

Visiting Scholar, Physics Department, University of Illinois at Urbana-Champaign, Feb. 2012-May. 2013

Visiting Researcher, Physical Sciences DivisionSRI International  (Nov. 2005 - Nov. 2006)

Research Associate, Department of Physics and AstronomyThe University of Georgia (2003 - 2004).

Postdoctoral Research Associate, School of Applied and Engineering PhysicsCornell University (10. 2001- 10. 2003)

Teaching Experience

X-ray Crystallography

Elements of X-ray Crystallography 

Application of Synchrotron Radiation Facility: X-ray Scattering

Honors & Distinctions

Excellent Running of Beamline BSRF-1W1A, 2015, 2016, 2017, 2018, 2019, 2020

Excellence Prize of Beijing lectron-Postron Collier Running, 2020

2018 Excellent teaching award, School of Physical Sciences, University of Chinese Academy of Sciences



1.        Yuanzhi Jiang, Chaochao Qin, Minghuan Cui, Tingwei He, Kaikai Liu, Yanmin Huang, Menghui Luo, Li Zhang, Hongyu Xu, Saisai Li, Junli Wei, Zhiyong Liu, Huan-Hua Wang, Gi-Hwan Kim, Mingjian Yuan, Jun Chen, Spectra stable blue perovskite light-emitting diodes, Nature Communications 10,  1868 (2019)

2.        Linxing Zhang, Jun Chen, Longlong Fan, Oswaldo Dieguez, Jiangli Cao, Zhao Pan, Yilin Wang, Jinguo Wang, Moon Kim, Shiqing Deng, Jiaou Wang, Huanhua Wang, Jinxia Deng, Ranbo Yu, James F. Scott, Xianran Xing, Giant polarization in super-tetragonal thin films through interphase strainScience 361, Issue 6401, 494-497 (2018);

3.  Xu JiLiang ChenMengxuan XuMei DongKun YanShuang ChengXueqian Kong ,Tongyao WangJiandang LiuBingchuan GuHuanhua WangZhiyong LiuShuao WangFeng HuangXiaoping OuyangCrystal imperfection modulation engineering serving for wide band gap semiconductor radiation detectorAdv. Electron. Mater. 22018). 10.1002/aelm.201700307

4.  Chen Liu, Jia Li Zhao, Jia-ou Wang, Hai-jie Qian, Rui Wu, Huan-Hua Wang, Nian Zhang, Kurash Ibrahim; Correspondence between the electronic structure and phase separation in a K-doped FeSe systemJ. Phys.: Condens. Matter. 29, 395503 (2017).

5.  Huan-hua Wang*Mengyao YuanEffect of doping concentration on point defect structure in As-implanted ZnO,  Solid State Comm. 261, 41-45 (2017), DOI:

6.  Linxing Zhang, Jie  Zhang, Huanhua  Wang, Lirong  Xu, Xianran Xing, Jun Chen; Domain-reorientation-induced polarization wake-up of PbTiO3 based ferroelectric thin filmsCeramics International 42 (16), 19212-19217 (2016)

7.  Hanqing Zhao, Jun Miao, Linxing Zhang, Yangchun Rong, Jun Chen, Jinxia Deng, Ranbo Yu, Jiangli Cao, Huanhua Wang, Xianran Xing, Lattice distortion and orbital hybridization in NdFeO3-PbTiO3 ferroelectric thin filmsDalton Transactions DOI:10.1039/c5dt03611a, (2016).

8.        Li-Bin Mo, Yu Wang, Yang Bai, Qing-Yun Xiang, Qun Li, Wen-qing Yao, Jia-Ou Wang, Kurash Ibrahim, Huan-Hua Wang, Cai-Hua Wan, Jiang-Li Cao, Hydrogen Impurity Defects in Rutile TiO2Scientific Reports 5, 17634 (2015).

9.    Xing Fan, Suling Zhao, Cui Yue, Qianqian Yang, Wei Gong, Yu Chen, Huanhua Wang, Quanjie Jia, Zheng Xu, Xurong Xu, 1,8-Diiodooctane as the processing additive to improve the efficiency of P3HT:PC61BM solar cells, Journal of Nanoscience and Nanotechnology 14(5), 3592-6 (2014).

10. Z. Fu, Z. G. Yin, N. F. Chen, X. W. Zhang, Y. J. Zhao, Y. M. Bai, Y. Chen, H.-H. Wang, X. L. Zhang, J. L. WuTetragonal-tetragonal-monoclinic-rhombohedral transition: strain relaxation of heavily compressed BiFeOepitaxial thin filmsAppl. Phys. Lett. 104, 052908 (2014).

11.    Y. Liu, H.-H Wang, Z. Zhang, S.S. Lee, P.A. Fenter, J.Z. Tischler, H. Hong, T.-C. Chiang, Interfacial Bonding and Structure of Bi2Te3Topological Insulator Films on Si(111)Determined by Surface X-ray Scattering Phys. Rev. Lett. 110, 226103 (2013).

12.    Xiaoqing Xu, Yang Li, Jianming Liu, Hongyuan Wei, Xianglin Liu, Shaoyan Yang, Zhanguo Wang, Huanhua WangX-ray probe of GaN thin films grown on InGaN compliant substratesAppl. Phys. Lett. 102, 132104 (2013).

13. Huan-hua Wang*Transparent Conducting Oxides: Principles, Problems and Research AnalysisPhysics 41(12), 782-787 (2012). (in Chinese) [王焕华*,透明导电氧化物的原理、问题与研究分析,物理41 (12), 782-787 (2012). ]

14.  Luo Xiyuan, Tan Guotai, Yuan Mengyao, Wang Huan-hua*, Quanjie Jia, Xiaoming Jiang, Growth and Morphological Characterization of Zinc NanoplatesSci. China Ser. E-Tech. Sci., 55(9)26462650 (2012).

15.    Mengyao Yuan, Hongyu Yuan, Quanjie Jia, Yu Chen, Xiaoming Jiang, Huan-hua Wang*The point defect structure and its transformation in As-implanted ZnO crystalsJ. Phys. D: Appl. Phys. 45, 085103 (2012).

16.    Z. W. Zuo, W. T. Guan, Y. Wang,  J. Lu, J. Z. Wang, L. Pu, Y. Shi, Y. D. Zheng, X.Y. Luo, , H. H. WangInfluence of ultrathin amorphous silicon layers on the nucleation of microcrystalline silicon films under hydrogen plasma treatmentAppl. Phys. Lett.  98(4),  041902 ( 2011).

17.  Jianming Liu, Xianlin Liu, Chengming Li, Hongyuan Wei, Yan Guo, Chunmei Jiao, Zhiwei Li, Xiaoqing Xu, Huaping Song, Shaoyan Yang, Qinsen Zhu, Zhanguo Wang, Anli Yang, Tieying Yang, Huanhua Wang, Investigation of cracks in GaN films grown by combined hydride and metal organic vapor phase epitaxial methodNanoscale Research Letters  669 (2011)

18.    陈石,刘宏邦,郑阳恒,谢一冈,阮向东,王焕华,陈雨,俞伯祥,唐爱松,杨亚聃,董洋,李敏,直流读出的THGEM探测系统及其在X射线上的应用核电子学与探测技术,第31卷第8期,835839. [Nuclear Electronics & Detection Technology, Vol. 31, No. 8, August 2011. P835-839]

19.    Huan-hua Wang*, Tieying Yang, Baoyi Wang, Kurash Ibrahim, Xiaoming JiangThe two origins of p-type conduction in transparent conducting Ga-doped SnO2 thin filmsMater. Res. Soc. Symp. Proc. Vol. 1324, d07-02 @ 2011 Materials Research Society. DOI: 10.1557/opl.2011.838.

20.    Li Wei-Yong, Han Ye, Wang Huan-Hua, Cao Li-Xin, Jia Quan-Jie, Chen Yu, Jiang Xiao-Ming, Dong Cheng, Xu Bo, and Zhao Bai-Ru, Observation of lateral long range order in superconducting FeTe thin filmsChin. Phys. B 19 (8), 087403 (2010).

21.   Huan-hua Wang*A Method of Material Design for Systematic Absence of X-ray DiffractionPowder Diffraction 25, S48-51 (2010). [Top 1 Excellent Paper of 10th National Conference on X-ray Diffraction and International Center of Diffraction Data (ICDD) Workshop 2009.]

22.   Tieying Yang, Xiubo Qin, Huan-hua Wang*, Quanjie Jia, Runsheng Yu, Baoyi Wang, Jiaou Wang, Kurash Ibrahim, Xiaoming JiangDirect Preparation and microstructure investigation of p-type transparent conducting Ga-doped SnO2 thin filmsPowder Diffraction 25, S36 (2010) .

23.   Tieying Yang, Xiubo Qin, Huan-hua Wang*, Quanjie Jia, Runsheng Yu, Baoyi Wang, Jiaou Wang, Kurash Ibrahim, Xiaoming Jiang, Qing He, Preparation and application in p-n homojunction diode of p-type transparent conducting Ga-doped SnO2 thin filmsThin Solid Films 518,  5542-5545 (2010).

24.  Z.Y. Zhai, X.S. Wu, H.L. Cai, X.M. Lu, J.H. Hao, Ju Gao, W.S. Tan, Q.J. Jia, H.H. Wang and Y.Z. Wang, “Dislocation density and strain distribution in SrTiO3 film grown on (110) DyScO3 substrate”, J. Phys. D: Appl. Phys. 42, 105307 (2009).

25.    H. P. Song, A. L. Yang, H. Y. Wei, Y. Guo, B. Zhang, G. L. Zheng, S. Y. Yang, X. L.Liu, Q. S. Zhu, Z. G. Wang, T. Y. Yang and H. H. WangDetermination of wurtzite InN/cubic In2O3 heterojunction band offset by x-ray photoelectron spectroscopyAppl. Phys. Lett94 (22), 222114 (2009).

26.    Yanhong Ma, Fengzhen Liu, Meifang Zhu, Jinlong Liu, Huan-hua Wang, Yi Yang and Yongfang Li, Aligned amorphous and microcrystalline Si Nanorods by Glancing Angle Deposition at low temperatureNanotechnology 20275201 (2009).

27.    Huan-hua Wang*, In-situ monitoring EuTiO3 and SrTiO3 film growth using time-resolved x-ray scattering during pulsed-laser deposition, Chin. Phys. C 33(11), 1-9 (2009).

28.    Huan-hua Wang*, Yijian Shi, William Chu and Yigal Blum, Strong surface diffusion mediated glancing-angle deposition: growth, recrystallization and reorientation of tin nanorods, Chin. Phys. Lett. 25 (1), 234-237 (2008).

29.    冯望生,房艳,徐继香,房春晖,贾全杰,王焕华,姜晓明,高斯多峰拟合在径向分布函数中的应用,物理化学学报,200824 (3) 497501

30.    FANG Chunhui, FANG Yan, JIA Quanjie, WANG Huanhua, JIANG Xiaming, WANG Yuzhu, CHEN Yu, LIN Lianjun, QIN Xufeng, A method for X-ray measurement of liquid structure by reflection of synchrotron radiationNuclear Techniques, Vol. 7, 6-10 (2007) (in Chinese)

房春晖,房艳,贾全杰,王焕华,姜晓明,王玉柱,陈雨,林联君,秦绪峰,同步辐射反射法测定液体结构方法研究核技术7, 6-10 (2007)

31.    Huan-hua Wang*, and Yiping Zhao, Nanostructure evolution of YBa2Cu3Ox thin films grown by pulsed-laser glancing-angle deposition, J. Vac. Sci. Techol. B 24 (3), 1230-1233, (2006).

32.    Wei Xiang-Jun, Xu Qing, Wang Tian-Min, Jia Quan-Jie, Wang Huan-Hua, Feng Song-Lin, Microstructure of TiNi Shape Memory Alloy Films Made of Sputter-Deposited Ni/Ti Multilayers, ACTA PHYSICA SINICA 55 (3), 1508-1511 (2006).

33.    C.Y. Hu, Z.X. Qin, Z.Z. Chen, T.J. Yu, X.D. Hu, K. Wu, Q.J. Jia, , H.H. Wang, G.Y. Zhang, Influence of various annealing temperatures on microstructure evolution of oxidized Ni/Au ohmic contact to p-GaN studied by synchrotron X-ray diffractionJournal of Crystal Growth, 285(3), 333-338 (2005).

34.    X.J. Wei, Q. Xu, Q.J. Jia, H.H. Wang, Phase depth profile in Ni-Ti shape memory alloy films made up from sputter-deposited Ni/Ti multilayersHigh Energy Physics And Nuclear Physics-Chinese Edition 29(3),40-42 (2005).

35.    Huan-hua Wang, Aaron Fleet, Joel D. Brock, Darren Dale, Yuri Suzuki, Nearly strain-free heteroepitaxial system for fundamental studies of pulsed laser deposition: EuTiO3 on SrTiO3, J. Appl. Phys. 96 (9), 5324-5328 (2004).

36.    Huan-hua Wang, Sou-yu Dai, Da-fu Cui, Yue-liang Zhou, H.B. Lu, Zheng-hao Chen, and Guo-zhen Yang, “Optical and transport properties of Sb-doped SrTiO3 thin films”, J. Appl. Phys90 (9): 4664-4667 (2001).

37.    H.H Wang, F. Chen, S. Y. Dai, T. Zhao, H. B. Lu, D. F. Cui, Y. L. Zhou, Z. H. Chen, and G. Z Yang, “Sb-doped SrTiO3 transparent semiconductor thin films”, Appl. Phys. Lett78 (12), 1676-1678 (2001).

38.    H. H. Wang, G. Z. Yang, D. F. Cui, H. B. Lu, T. Zhao, F. Chen, Y. L. Zhou, Z. H. Chen, Y. C. Lan, Y. Ding, L. Chen, X. L. Chen, and J. K. Liang, “Epitaxial growth and electric characters of SrMoO3 thin films”, Journal of Vacuum Science & Technology A, Vol. 19, Iss 3, 930-933 (2001).

39.    H.H. Wang, D.F. Cui, Y.L. Zhou,  H.B. Lu, F. Chen, T. Zhao, Z.H. Chen, G.Z. Yang, M.C. Xu, Y.C Lan, X.L. Chen, H.J. Qian, and F.Q. Liu, “Growth and characterization of SrMoO3 thin films”, Journal of Crystal Growth, Vol. 226, Iss2-3, pp 261-266 (2001).

40.    H.H. Wang, R. P. Wang, Y. L. Zhou, G. Z. Yang, and Z. H. Chen, “Growth and characterization of PrBa2Cu3O7-x thin film used as template layer on SrTiO3 substrate”, Journal of Superconductivity: Incorporating Novel Magnetism 13, 447-451 (2000).

41.    H.H. Wang* and Y.-P. Zhao, Structure evolution of nanostructured YBa2Cu3Ox thin films formed by pulsed laser glancing deposition; Solid State Phenomena Vol. 121-123, (2007); [2005 International Conference on Nano-Science and Technology]

42.    Huan-hua Wang, Yue-liang Zhou, Guo-zhen Yang, Zheng-hao Chen, Rong-ping Wang, Fabrication of a-axis oriented YBa2Cu3O7-x thin films with smooth surfaces by pulsed laser deposition, Chinese Journal of Low Temperature, Vol.21, Iss4, (1999) 300. (conference paper, in Chinese).

43.    Cui DF, Wang H H, Dai SY, Zhou YL, Chen ZH, Yang GZ, Liu FQ, Ibrahim K, Qian HJ, X-ray photoelectron spectroscopy study of Sb-doped SrTiO3 transparent conducting thin films, ACTA PHYSICA SINICA 51 (1): 187-191 (2002).

44.    Rongping Wang, Huanhua Wang, Yueliang Zhou, Shaohua Pan, Chunfang Liu, Xuan Wu, Danming Liu, Pingxiang Zhang, Lian Zhou, Self-oxidized NiO on Cube-textured Ni for YBCO coated superconducor, Physica C 339, 166-170 (2000).

45.    Rong-ping Wang, Yue-liang Zhou, Shao-hua Pan, Huan-hua Wang, Guo-zhen Yang, Guang-wen zhou, Ze Zhang, Structural characteristics of a-axis-oriented PrBa2Cu3O7 thin fims grown by pulsed laser deposition, Journal of Crystal Growth204, 293-297 (1999).

46.  Guo Xiang-xin, Dai Sou-yu, Wang Huan-hua, Zhou Yue-liang, Chen Zheng-hao, Studies of colossal magnetoresistance La-Sn-Mn-O epitaxial single-crystal thin films, Science in China (Series A), Vol. 29 Iss 7, (1997) P643. (in Chinese)

47.  HS Guo, ML Zhou, DM Liu, TY Zuo, YL Zhou, RP Wang, SH Pan, HH Wang, Preparation of Ni-based multilayered tape and its potential application for the coating of YBa2Cu3O7-delta, Physica C, Vol 337, Iss 1-4, pp 96-100 (2000).

48.    M Zhou, H Guo, DM Liu, TY Zuo, LH Zhai, YL Zhou, RP Wang, SH Pan, HH Wang, Properties of YBa2Cu3Ox-d films on textured Ag tapes, Physica C, Vol 337, Iss 1-4, pp 101-105 (2000).

49.    Zhou YL, Wang RP, Pan SH, He M, Wang HH, Lu HB, Chen ZH, Cui DF, Yang GZ, Zhou ML, Guo HS, Liu DM, Wang X, Deposition of YBCO high temperature superconductor thin films on textured Ag (110) substrates by pulsed laser deposition, Chinese Journal of Low Temperature, Vol. 21, Iss4, 660 (1999). (in Chinese)

50.    Liu CF, Wu X., Wang YF, Yang ZJ, Feng Y, Zhang PX, Wu RZ, Zhou L, Zhou YL, Wang RP, Pan SH, Wang HH, Chen ZH, Cui DF, Lu HB, Yang GZ, Fabrication and properties of coated YBCO superconductor on cubic-textured Ni substratesChinese Journal of Low Temperature, Vol. 21, 467 (1999). (in Chinese).

51.    Xing Fan, Suling Zhao, Cui Yue, Qianqian Yang, Wei Gong, Yu Chen, Huanhua Wang, Quanjie Jia; Zheng Xu, Xurong Xu, 1,8-Diiodooctane as the Processing Additive to Improve the Efficiency of P3HT:PC61BM Solar CellsJournal of Nanoscience and Nanotechnology  14( 5), 3592-3596( 2014).

52.    刘宏邦; 陈石; 郑阳恒; 谢一冈; 阮向东; 刘倩; 王焕华; 陈雨; 唐爱松; 杨亚聃; 董洋; 李敏;“THGEM一维弧形无像差X射线衍射仪研制”第十六届全国核电子学与核探测技术学术年会论文集(上册) (2012).

53.    原宏宇,苑梦尧,刘静,伊福廷,吴忠华,王焕华*,张杰,“单一取向Cu2O纳米棒的一种工业制备技术”,材料科学与工程学报,2014年第32卷第3期,339-343 (2014). 文章编号 16732812(2014)03-0339-05



1. Huan-hua Wang, Zhibang Shen, Yu Chen, Invention Patent An integrated facility for coherence protection, monitoring and intellectual attenuation of coherent x-rays, 2020.

2. Huan-hua Wang, Tieying Yang, Xiaoming Jiang, Xiubo Qin, Ruzsheng Yu, Baoyi Wang, A tansparent p-n homojunction diode and its fabrication method, Authorization No. 200910089589.6  (China Patent)

3. Xiao-Dong Xiang, Zhi-Gang Yu, Huan-hua Wang, USA and International Patent: RFID Tags Having Ferromagnetic Patches, File Reference: SRI1P061.WO (SRI ref WO-5143-2), International application number: PCT/US06/034999; International filing date: Sep.7 2006.

4Huan-hua Wang, Yue-liang Zhou, Hui-bin Lu, Zheng-hao Chen, Guo-zhen Yang, Patent: Simplified scanner for laser beam, Patent No.98213880.6; Authorization Date: Feb. 26, 1999 (China Patent)

    5Zhou Yue-liang, Wang Rong-ping, Wang Huan-hua, Pan Shao-hua, Chen Zheng-hao, Cui Da-fu, Lu Hui-bin, Yang Guo-zhen, Invention Patent: Method of improving the critical current density of high temperature superconducting tape fabricated by pulsed laser deposition. Patent No. ZL 99 1 07798.9 (China Invention Patent)

     6Hui-bin Lu, Shou-yu Dai, Zheng-hao Chen, Yue-liang Zhou, Fan Chen, Tong Zhao,  Guo-zhen Yang, Meng He, Huan-hua Wang, Invention Patent: Perovskite-type oxide composite transistor, Patent No. ZL  00100368.2  (China Invention Patent)

Research Interests

  • X-ray-matter  interactions and their applications in condensed matter physics: Methodology, instruments  and applications of synchrotron radiation X-rays scattering (XRS), diffraction  (XRD), reflection (XRR), grazing-incidence photon correlation spesctroscopy (GIXPCS);  surface atomic pair distribution function (SPDF); Theory of light-matter interactions, especially  light-polarization of multiferroics; Applications of X-Ray Photoelectron spectroscopy (XPS) and Angle-Resolved Photoemission  Spectroscopy (ARPES). Current focus is the design and construction of the Low-Dimension Structure Probe (LODISP) at High Energy Photon Source (HEPS).

  • Growth and  characterization of thin films, heterojunctions and nanostructures: Growth mechanism and  surface processes at atomic scale; Physical effects promoting  layer-by-layer growth (for achieving atomic-scale smooth abrupt  surface/interface used in miltilayer-based devices); Formation mechanisms of  nanostructured pattern on surface (for achieving surface nanostructures used for  catalysis, sensors and nanodevices).

  • Structure-Property-Processing  interplays of functional materials: Design, modification and synthesis of functional  materials; Phase transition of low-dimensional materials by surface x-ray  scattering; Dynamic process by grazing-incidence CPCS; p-Type transparent  conducting oxide thin films; Defect structures in  compound semiconductors applied in light emitting diodes (LED) and solar cells. Current research focus is on interfacial moduclation of quantum phase transition of low-dimension transition metal oxide thin films.



杨铁莹  博士研究生  070205-凝聚态物理  

原宏宇  硕士研究生  430105-材料工程  

苑梦尧  博士研究生  070205-凝聚态物理  

李燕  博士研究生  070205-凝聚态物理  

戚炜恒  博士研究生  070205-凝聚态物理  


张中英  博士研究生  070205-凝聚态物理  

王震  硕士研究生  070205-凝聚态物理  

刘晨旭  硕士研究生  070205-凝聚态物理  

Group Members

Huan-hua Wang, professor Yu CHEN, associate professor Zhi-Bang SHEN, assistant engineer Fang-Min Guo, assistant professor Kun LI, Ph.D. Yan LI, Ph.D student Wei-Heng Qi, Ph.D. student Zhong-Ying Zhang, postgraduate student