H
Hoi Sing Kwok
Researcher at Hong Kong University of Science and Technology
Publications - 1207
Citations - 32982
Hoi Sing Kwok is an academic researcher from Hong Kong University of Science and Technology. The author has contributed to research in topics: Liquid crystal & Thin-film transistor. The author has an hindex of 77, co-authored 1165 publications receiving 29448 citations. Previous affiliations of Hoi Sing Kwok include University of Hong Kong & University of California, Berkeley.
Papers
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Proceedings ArticleDOI
Physics Of In-Situ Laser Deposition Of Superconducting Thin Films
TL;DR: In this paper, the physics of the in-situ laser deposition process is reviewed and the use of excimer lasers and the deposition of YBCO thin films are discussed.
Journal ArticleDOI
Low-temperature growth of mirror-like superconducting thin films on sapphire
TL;DR: In this article, a mirror-like superconducting Y-Ba-Cu-O films on sapphire, both with and without a buffer layer, were shown to superconduct at ≈ 75 K.
Journal ArticleDOI
Bistable switching of polarization-grating diffractions enabled by a front bistable twisted nematic film
TL;DR: Two bistable-switching operations are experimentally demonstrated: (i) the BTN-LCPG can either split or deflect the laser beam; and (ii) theBTN- LCPG can selectively diffract the laserbeam to the +1st and -1st orders, while maintaining a high diffraction efficiency of ∼90%.
Journal ArticleDOI
Near transform-limited picosecond dye laser pulses by cascaded transient oscillation.
TL;DR: A cascaded transient oscillation dye laser is designed and near-transform-limited picosecond pulses are obtained.
Journal ArticleDOI
44-3: Nanoscopic Patterned Photo-alignment for Electrically Switchable Liquid Crystal Pancharatnam-Berry Phase Diffractive Lens
Alwin M. W. Tam,Fan Fan,Hung Shan Chen,Tao Du,Vladimir G. Chigrinov,Yi-Hsin Lin,Hoi Sing Kwok +6 more
TL;DR: In this article, a nano-structured alignment patterning for thin film Pancharatnam-Berry phase (PBP) diffractive lens by the use of polarized light converter technology is disclosed.