Y. M. Yiu Personal Hompage: Hello






Research highlights



Ph.D., University of Maryland, Physics, 1981;

M.Sc., University of Akron, Physics, 1975;

B. Sc (Honour), Chinese University of Hong Kong, Physics, 1972.




Contact information


Rm 032A, Chemistry Department
The University of Western Ontario
London, Ontario, N6A 5B7, Canada
(519) 661-2111 Extension 86297
Fax: (519) 661-3022









Research Interest:

            Ab-initial calculation and molecular dynamics simulation of materials. Comparison of the theoretical XANES (X-ray Absorption Near Edge Structure) and EXAFS (Extended X-ray Absorption Fine Structure) spectra with the experimental spectra using Synchrotron Radiation Light Source. Materials of interest include nano, chalcogenide, solar cell, Li-ion battery materials. Surface Characteristic of materials.


           ”Effects of polymer intercalation in calcium silicate hydrates on drug loading capacities and drug release kinetics: an X-ray absorption near edge structure study”. Xiaoxuan Guo, Jin Wu, Yun Yiu, Yongfeng Hu, Ying-Jie Zhu, Tsun-Kong Sham,  Can. J. Chem. 2017 p. 1-8 (March 8, 2017). [DOI: 10.1139/cjc-2016-0660]

             “Changes in local surface structure and Sr depletion in Fe-inplanted SrTiO3 (001)”. Olga  Lobacheva, Yun Yiu, Ning Chen, Tsun-Kong Sham, Lyudmila Goncharo, Appl. Surf. Sci. 2017, 393, 74-81 [DOI: http://dx.doi.org/10.1016/j.apsusc.2016.09.131]

            Chapter 2: “Techniques for Structural Investigations (Theory and Experimental)”, in "Applications of Chalcogenides: S, Se, and Te", Y. M. Yiu, edited by Gurinder Kaur Ahluwalia, Springer International Publishing (2017), p. 61-104.ISBN:  978-3-319-41188-0, [DOI:  10.1007/978-3-319-41190-3_2]

            “Identifying barriers to charge-carriers in the bulk and surface regions of Cu2ZnSnS4 nanocrystal films by X-ray absorption fine structures (XAFSs)”.  Matthew J. Turnbull, Daniel Vaccarello, Yun Mui Yiu, Tsun-Kong Sham and Zhifeng Ding , J. Chem. Phys. 2016, 145, 204702. [DOI: http://dx.doi.org/10.1063/1.4967863]

            ”Tracking Drug Loading Capacities of Calcium Silicate Hydrate Carrier: A Comparative X-ray Absorption Near Edge Structures Study”, Xiaoxuan Guo, Zhiqiang Wang, Jin Wu, Yun-Mui Yiu, Yongfeng Hu, Ying-Jie Zhu, and Tsun-Kong Sham, J. Phys. Chem. B 2015, 119 (31), pp 10052–10059. [DOI:  10.1021/acs.jpcb.5b04115]

             “The local structure and ferromagnetism in Fe-implanted SrTiO3 single crystals”. O. Lobacheva, M. Chavarha, Y. M. Yiu, T. K. Sham and L. V. Goncharova, “J. Appl. Phys. 116, 013901 (2014). [DOI: 10.1063/1.4886875]

            “XANES Studies of Iron Implanted Strontium Titanate” O. Lobacheva, M. Chavarha, Y.M. Yiu, T.K. Sham, and L.V. Goncharova, AIP Conf. Proceedings 1590, 82-86(2014). [DOI: http://doi.org/10.1063/1.4870200]

            “Electronic structure and optical properties of CdSxSe1−x solid solution nanostructures from X-ray absorption near edge structure, X-ray excited optical luminescence, and density functional theory investigations”. M. W. Murphy, Y. M. Yiu, M. J. Ward, L. Liu, Y. Hu, J. A. Zapien, Yingkai Liu and T. K. Sham, J. Appl. Phys. 116, 193709 (2014). [DOI: http://dx.doi.org/10.1063/1.4902390]

            “Experimental and theoretical XANES of CdSxSe1−x nanostructures”. Y. M. Yiu, M. W. Murphy, L. Liu, Y. Hu and T. K. Sham, AIP Conf. Proc. 1590, 26-31 (2014). [DOI:  10.1063/1.4870191]

             ”Drug–nanocarrier interaction—tracking the local structure of calcium silicate upon ibuprofen loading with X-ray absorption near edge structure    (XANES) ”, Xiaoxuan Guo, Jin Wu, Yun-Mui Yiu, Yongfeng Hu, Ying-Jie Zhu, and Tsun-Kong Sham, Phys. Chem. Chem. Phys, 15, 15033 (2013). [DOI: 10.1039/c3cp50699a]

              "Ab-intio Calculation of the As and Se L3,2-edge Xanes of As2Se3 o As2Se3 and Zn-doped As2Se3 and comparison to the experiments”. Y. M. Yiu, Gurinder Kaur, Qunfeng Xiao, and Tsun Kong Sham, J. of Non-crystalline Solids, 364, 13 (2013). [DOI:10.1016/j.jnoncrysol.2012.12.038]

               “ Ab-initio Calculation of the XANES of Lithium Phosphates and LiFePO4",Y. M. Yiu, Songlan Yang, Dongniu Wang, Xueliang Sun, and T. K. Sham, Journal of Physics: Conference Series, 430, 012014, (2013). [DOI: 10.1088/1742-6596/430/1/012014]

               “XAFS and XEOL of tetramesityldigermene – An electronic structure study of a heavy group 14 ethylene analogue”, M.J. Ward,, P.A. Rupar, M.W. Murphy, Y.M. Yiu, K.M. Baines, T.K. Sham , Journal of Physics: Conference Series, 430, 012046, (2013). [DOI: 10.1088/1742-6596/430/1/012046]

               "Soft X-ray XANES Studies of Various Phases Relating to LiFePO4 Bsed Cathode Materials”, Songlan Yang, Dongniu Wang, Guoxian Liang, Yun Miu Yiu, Jiajun Wang, Lijia Liu , Xueliang Sun, and Tsun-Kong. Sham, Energy Environ. Sci., 5, 7007 (2012).[DOI: 10.1039/c2ee03445j]

                “Electronic structures of LaB6 and CeB6 single crystals: X-ray absorption near-edge structure studies at the B K-edge and the La and Ce giant resonance”, Lijia Liu., Yun-Mui Yiu., Tsun-Kong Sham, Journal of Electron Spectroscopy and Related Phenomena 184. 188–191 (2011). [DOI: 10.1016/j.elspec.2011.03.002]

                 “Ionic nature of Ge(II)-centered dications: a germanium K-edge X-ray absorption near edge structures study”, Matthew J. Ward, Paul A. Rupar, Michael W. Murphy, Yun-Mui Yiu, Kim M. Baines and T. K. Sham, Chem. Commun., 46, 7016-7018 (2010). [DOI: 10.1039/C0CC01925A]

                “X-ray absorption and luminescence studies of Ba2Ca(BO3)2: Ce3+/Na+ phosphors”, J. Y. Peter Ko, Yun-Mui Yiu, Hongbin Liang, and Tsun-Kong Sham, J. Chem. Phys. 132, 234701 (2010). [DOI:10.1063/1.3437612]

                 “Electronic Structures and Optical Properties of 6H- and 3C-SiC Microstructures and Nanostructures from X-ray Absorption Fine Structures, X-ray Excited Optical Luminescence, and Theoretical Studies”, Lijia Liu, Y. M. Yiu, and T. K. Sham, Liying Zhang and Yafei Zhang, J. Phys. Chem. C, 114, 6966–6975 (2010). [DOI: 10.1021/jp100277s]

                “Electronic structure of nanopolycrystalline pulsed laser deposited LaB6 films and single crystals: The boron perspective”, L. Liu, Y. M. Yiu, T. K. Sham, D. Yang and L. Zuin, J. Appl. Phys. 107, 043703 (2010). [DOI: 10.1063/1.3284935]

                 “XANES and XEOL investigations of SiC microcrystals and SiC nanowires”, Lijia Liu, J Y P Ko, M J Ward, Y M Yiu, T K Sham and Y Zhang, 14th International Conference on X-Ray Absorption Fine Structure (XAFS14) , Journal of Physics: Conference Series 190, 012134 (2009). [DOI:10.1088/1742-6596/190/1/012134]

                 "Surface Second Harmonic Generation of Se-Te-Sb films", G. Kaur, F. Wang, Y. M. Yiu, D. W. Shoesmith, M. Zinke-Allmang, T. K. Sham, and Z. Ding, J. Mater. Sci: Mater. Electron, 20:S164-S169 (2009). [DOI: 10.1007/s10854-007-9498-8]

                 "X-ray Spectroscopy of Se-Te-Sn alloys", Gurinder Kaur, Yun Mui Yiu, and Tsun Kong Sham, the 11th Canadian   Light Source Users’ Meeting, Saskatoon, SK (2008).

                  "Electronic Structure of Se, Se-Te, and Se-Te-Sb Systems: Some Observations from X-rya Spectroscopy and Ab Initio Calculations", Yun Mui Yiu, Tsun Kong Sham, and Gurinder Kaur, J. Appl. Phys. 104, 013713 (2008), [DOI: 10.1063/1.2955454]

                  "Soft X-ray excited color-centre luminescence and XANES studies of calcium oxide", J.Y. Peter Ko, Franziskus Heigl, Yun Mui Yiu, Xing-Tai Zhou, Tom Regier, Robert. I. R. Blyth, and Tsun-Kong Sham, Can. J. Chem. 85, 853-858 (2007), [DOI: 10.1139/V07-109]

                  "High-resolution XANES S L3,2 edge spectra collected from a series iron-bearing sphalerite (Zn, Fe) S minerals", Allen Pratt, Lucia Zuin, Y. Mui. Yiu, and Sarah Harmer, Can. J. Chem. 85,761 (2007). [DOI: 10.1139/V07-072]

                  "Se L-edge XANES spectra of amorphous Se-Te based systems", G. Kaur, Y. M. Yiu, and T. K. Sham, the 10th Canadian Light Source Users’ Meeting at the University of Saskatchewan, Saskatoon, SK, (June 16-17, 2007).

                   "X-ray absorption and X-ray excited optical luminescence (XEOL) studies of KAu(CN)2 at the C, N and K K-edge and the Au L3-edge - comparison with density functional theory (DFT) calculation", P.S.G. Kim, Y.F. Hu, Y.M. Yiui, and T.K. Sham, J. Electron Spectrosc. Relat. Phenom. 114, 811-815 (2005), [DOI: 10.1016/j.elspec.2005.01.241]

                  "X-ray absorption and x-ray excited optical luminescence (XEOL) studies of KAu(CN)2 at the C, N and K K-edge and the Au L3-edge -comparison with density functional theory (DFT) calculation", P. S. G. Kim, U.-F. Hu, Y. M. Yiu, and T. K. Sham", the XIV International VUV Conference, Cairns, Australia (July 19-23, 2004).

                  "Electronic Structure of KAg(CN)2 and KAu(CN)2", Y. M. Yiu, P. S. G. Kim, T. K. Sham, and Y. F. Hu, the 87th Canadian Chemistry Conference and Exhibition, London, Ontario (May 29-June 1, 2004) .

                  "The Electronic Properties and L3 XANES of Au and Nano-Au", Y. M. Yiu, Peng Zhang, and T. K. Sham, Nanotecch 2003, (Technical Proceedings of the 2003 Nanotechnology Conference and Trade Show, Feb. 23-27, 2003), Vol. 3, 183-186 (2003).

                  "X-ray Absorption Near Edge Structures at the L3,2 and M3,2 edges: a Probe for the Electronic Behavior of Metal Nanostructures", Y. M. Yiu and T. K. Sham, Computational Nanoscience and Nanotechnology 2002, 458-462 (2002).

                 "Structures of Micro Films of TiN by Ab-initio Calculation: Implication to X-ray Absorption Near Edge Structure (XANES)", Y. M. Yiu, Y. F. Hu, and T. K. Sham, Computational Nanoscience 2001, 169-172 (2001).

                 "X-ray excited optical luminescence (XEOL) studies of CaF2 at the Ca L3,2 -edge", S. J. Naftel, Y. M. Yiu, T. K. Sham, and B. W. Yates, J. Electron Spectros. & Rel. Phenom., 119, 215-220 (2001).[ DOI: 10.1016/S0368-2048(01)00295-X]

                  "Calcium L-edge XANES study of some calcium compounds", S.J. Naftel, T.K. Sham, Y.M. Yiu, and B.W. Yates, J. Synchrotron Rad., 8, 255-257 (2001).. [DOI: 10.1107/S0909049500019555]







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