Zobrazeno 1 - 10
of 36
pro vyhledávání: '"H F, Lui"'
Autor:
Wai Kin Chan, Charles Surya, Xinyi Chen, H. F. Lui, Pwk W. K. Fong, Alan Man Ching Ng, Wai Ming Kwok, Aleksandra B. Djurišić, C. C W Cheng
Publikováno v:
Thin Solid Films. 527:303-307
Light-emitting diodes (LEDs) based on p-GaN/ZnO heterojunction were fabricated. ZnO thin film deposited by electron-beam deposition and ZnO nanorods grown by electrodeposition were used as n-type materials. Devices with and without ~ 10 nm thick MgO
Autor:
Wai Kin Chan, Alan Man Ching Ng, Charles Surya, Chi Chung Ling, Aleksandra B. Djurišić, H. F. Lui, Xinyi Chen, Wai Keung Fong
Publikováno v:
MRS Proceedings. 1439:109-114
Light-emitting diodes (LEDs) based on p-GaN/ZnO heterojunction were fabricated. GaN was deposited on sapphire using metal-organic chemical vapor deposition (MOCVD), and two kinds of ZnO i.e. ZnO thin film deposited by sputtering and ZnO nanorods (NRs
Publikováno v:
Superlattices and Microstructures. 49:408-415
Cu 0.62 Zn 0.38 brass foils were thermally oxidized at 500 °C under various gaseous environments, including nitrogen, air and mixture of N 2 –O 2 at a pressure of 1 atm for 3 h. The oxidized specimens were characterized with a scanning electron mi
Publikováno v:
IEEE Transactions on Electron Devices. 56:672-677
In this paper, we present the design, fabrication, and characterization of a novel UV photodetector with a cutoff wavelength of 300 nm without utilizing AlGaN-based junctions or multilayer optical filters. The active region of the device consists of
Autor:
Chuanbao Cao, H. F. Lui, K. K. Leung, Ping Kong Alexander Wai, Zhuo Chen, Charles Surya, W. K. Fong
Publikováno v:
Fluctuation and Noise Letters. :L419-L428
Hot-electron stressing on GaN -based light emitting diodes (LEDs) has been performed using a dc stressing current. Detailed characterizations on the degradations in the optoelectronic and low-frequency noise properties of the devices have been conduc
Publikováno v:
IEEE Transactions on Electron Devices. 54:671-676
In this paper, present experimental investigations on the radiation hardness of GaN-based Schottky diode photodetectors. High-power ultraviolet (UV) radiation obtained from a Xenon lamp is used as the light source for the optical-stressing experiment
Autor:
H. K. Tan, K. S. Wong, G. C. Wong, P. H. C. Tan, J. S. S. Lim, J. Raghuram, K. T. Woo, H. F. Lui, H. S. Ng, Pierce K. H. Chow, H. N. Ng, Chee-Kiat Tan, L. H. L. Choong
Publikováno v:
Liver International. 23:52-60
Background/methods: Molecular Adsorbent Recirculating System (MARS) was used in three consecutive critically ill patients at the Singapore General Hospital with advanced malignancy and acute liver failure (ALF). Case 1 was a male patient with hepatoc
Autor:
Xu-Xiang Zhang, Maohai Xie, H. F. Lui, Yu Hang Leung, Charles Surya, Vellaisamy A. L. Roy, Hui Liu, Ju Gao, Aleksandra B. Djurišić
Publikováno v:
Applied Physics Letters. 84:756-758
ZnO tetrapod nanostructures were prepared by evaporating Zn metal under humid argon flow. After the fabrication, Mn diffusion doping was performed at two different temperatures (600 and 800 °C). The samples were characterized by scanning electron mi
Publikováno v:
Applied Physics Letters. 83:141-143
The morphology and optical properties of ZnO nanostructures prepared by thermal evaporation of Zn under different conditions was investigated. ZnO nanostructures prepared in air, dry and humid argon flow, and dry and humid nitrogen flow were characte
Autor:
W C, Chow, R, Chong, R, Guan, K Y L, Ho, Y S, Leo, K L, Loy, H F, Lui, H S, Ng, W F, Siew, E K, Teo, T, Yeo
Publikováno v:
Singapore medical journal. 52(4)
The Ministry of Health (MOH) publishes clinical practice guidelines on Chronic Hepatitis B Infection to provide doctors and patients in Singapore with evidence-based guidance on managing important medical conditions. This article reproduces the intro