K
KH Tam
Researcher at University of Hong Kong
Publications - 28
Citations - 3225
KH Tam is an academic researcher from University of Hong Kong. The author has contributed to research in topics: Nanorod & Scanning electron microscope. The author has an hindex of 17, co-authored 28 publications receiving 3004 citations. Previous affiliations of KH Tam include Hong Kong University of Science and Technology.
Papers
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Journal ArticleDOI
Defects in ZnO nanorods prepared by a hydrothermal method
KH Tam,C. K. Cheung,Yu Hang Leung,Aleksandra B. Djurišić,Chi Chung Ling,C. D. Beling,S. Fung,Wai Ming Kwok,W. K. Chan,D. L. Phillips,Lu Ding,Weikun Ge +11 more
TL;DR: ZnO nanorod arrays were fabricated using a hydrothermal method and found that, while the defect emission can be significantly reduced by annealing at 200 degrees C, the rods still have large defect concentrations as confirmed by their low positron diffusion length and short PL decay time constants.
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Defect emissions in ZnO nanostructures
Aleksandra B. Djurišić,Yu Hang Leung,KH Tam,Y. F. Hsu,Lu Ding,Weikun Ge,Y. C. Zhong,Kam Sing Wong,W. K. Chan,Hoi Lam Tam,Kok Wai Cheah,Wai Ming Kwok,David Lee Phillips +12 more
TL;DR: In this paper, defect emissions exhibited a strong dependence on the temperature and excitation wavelength, with some defect emissions observable only at low temperatures and for certain excitation wavelengths, while green emission was not significantly affected by annealing.
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Green, yellow, and orange defect emission from ZnO nanostructures : Influence of excitation wavelength
TL;DR: In this article, photoluminescence from ZnO nanostructures prepared by different methods (needles, rods, shells) was measured as a function of excitation wavelength and temperature.
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Antibacterial activity of ZnO nanorods prepared by a hydrothermal method
KH Tam,Aleksandra B. Djurišić,Charis M.N. Chan,Yan Yan Xi,C.W. Tse,Yu Hang Leung,W. K. Chan,Frederick C. Leung,Doris W.T. Au +8 more
TL;DR: In this paper, the antibacterial activity of ZnO nanorods prepared by a hydrothermal method against a gram-negative bacterium Escherichia coli and a gram positive bacterium Bacillus atrophaeus was investigated.
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Identification of local and circulating cancer stem cells in human liver cancer
Zhen Fan Yang,Patricia Ngai,David W. Ho,Wan Ching Yu,Michael N.P. Ng,Chi Keung Lau,Mandy L. Y. Li,KH Tam,Chi Tat Lam,Ronnie T.P. Poon,Sheung Tat Fan +10 more
TL;DR: Identification of CD45−CD90+ CSCs in both tumor tissues and circulation suggests that CD45+ CD90+ could be used as a marker for human liver cancer and as a target for the diagnosis and therapy of this malignancy.