K
Kok Wai Cheah
Researcher at Hong Kong Baptist University
Publications - 273
Citations - 11751
Kok Wai Cheah is an academic researcher from Hong Kong Baptist University. The author has contributed to research in topics: Photoluminescence & OLED. The author has an hindex of 48, co-authored 270 publications receiving 10627 citations. Previous affiliations of Kok Wai Cheah include City University of Hong Kong & East China University of Science and Technology.
Papers
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Geometric metasurface fork gratings for vortex-beam generation and manipulation
TL;DR: In this paper, a novel type of geometric metasurface fork grating that seamlessly combines the functionality of a phase plate for vortex-beam generation, and that of a linear phase gradient metrasurface for controlling the wave-propagation direction was realized.
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Two-photon fluorescence probes for imaging of mitochondria and lysosomes
Wanggui Yang,Pui Shan Chan,Miu Shan Chan,Miu Shan Chan,King Fai Li,Pik Kwan Lo,Nai Ki Mak,Kok Wai Cheah,Man Shing Wong +8 more
TL;DR: Novel biocompatible cyanines show not only a very large two-photon cross-section of up to 5130 GM at 910 nm in aqueous medium for high-contrast and -brightness two-Photon fluorescence live cell imaging but also highly selective subcellular localization properties including localization of mitochondria and lysosomes.
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Triplet Emission in Platinum-Containing Poly(alkynylsilanes)
TL;DR: In this paper, synthetic routes to novel oligomeric and polymeric platinum(II)-containing alkynylsilanes were developed, which were shown to be thermally stable.
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GaN/ZnO nanorod light emitting diodes with different emission spectra
A. M. C. Ng,Yan Yan Xi,Y. F. Hsu,Aleksandra B. Djurišić,W. K. Chan,Shangjr Gwo,Hl L. Tam,Kok Wai Cheah,Pwk W. K. Fong,H. F. Lui,Charles Surya +10 more
TL;DR: Light emitting diodes consisting of p-GaN epitaxial films and n-ZnO nanorods have been fabricated and characterized and the emission spectra were significantly affected by both the properties of the GaN substrate and the annealing conditions for the ZnO Nanorods.
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An organic p-type dopant with high thermal stability for an organic semiconductor
Z. Q. Gao,Bao Xiu Mi,Bao Xiu Mi,Gui Zhen Xu,Yi Qian Wan,Meng Lian Gong,Kok Wai Cheah,Chin H. Chen +7 more
TL;DR: 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane, a potent electron accepter, has been found to possess superior thermal stability and proved to be an excellent p-type dopant.