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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.
Publications:
”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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