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| 1 | High-speed colour-converting photodetector with all-inorganic CsPbBr_(3) perovskite nanocrystals for ultraviolet light communication显示文摘Optical wireless communication(OWC)using the ultra-broad spectrum of the visible-to-ultraviolet(UV)wavelength region remains a vital field of research for mitigating the saturated bandwidth of radio-frequency(RF)communication.However,the lack of an efficient UV photodetection methodology hinders the development of UV-based communication.The key technological impediment is related to the low UV-photon absorption in existing silicon photodetectors,which offer low-cost and mature platforms.To address this technology gap,we report a hybrid Sibased photodetection scheme by incorporating CsPbBr_(3) perovskite nanocrystals(NCs)with a high photoluminescence quantum yield(PLQY)and a fast photoluminescence(PL)decay time as a UV-to-visible colourconverting layer for high-speed solar-blind UV communication.The facile formation of drop-cast CsPbBr_(3) perovskite NCs leads to a high PLQY of up to ~73% and strong absorption in the UV region.With the addition of the NC layer,a nearly threefold improvement in the responsivity and an increase of ~25% in the external quantum efficiency(EQE)of the solar-blind region compared to a commercial silicon-based photodetector were observed.Moreover,timeresolved photoluminescence measurements demonstrated a decay time of 4.5 ns under a 372-nm UV excitation source,thus elucidating the potential of this layer as a fast colour-converting layer.A high data rate of up to 34 Mbps in solar-blind communication was achieved using the hybrid CsPbBr_(3)-silicon photodetection scheme in conjunction with a 278-nm UVC light-emitting diode(LED).These findings demonstrate the feasibility of an integrated high-speed photoreceiver design of a composition-tuneable perovskite-based phosphor and a low-cost silicon-based photodetector for UV communication. | Chun Hong Kang Ibrahim Dursun Guangyu Liu Lutfan Sinatra Xiaobin Sun Meiwei Kong Jun Pan Partha Maity Ee-Ning Ooi Tien Khee Ng Omar F.Mohammed Osman M.Bakr Boon S.Ooi | 2019 | Light(Science & Applications)2019，8，1： | 14 |
| 2 | Gastric peritoneal carcinomatosis-a retrospective review显示文摘AIM To characterize patients with gastric peritoneal carcinomatosis(PC) and their typical clinical and treatment course with palliative systemic chemotherapy as the current standard of care.METHODS We performed a retrospective electronic chart review of all patients with gastric adenocarcinoma with PC diagnosed at initial metastatic presentation between January 2010 and December 2014 in a single tertiary referral centre.RESULTS We studied a total of 271 patients with a median age of 63.8 years and median follow-up duration of 5.1 mo. The majority(n = 217, 80.1%) had the peritoneum as the only site of metastasis at initial presentation. Palliative systemic chemotherapy was eventually planned for 175(64.6%) of our patients at initial presentation, of which 171 were initiated on it. Choice of first-line regime was in accordance with the National Comprehensive Cancer Network Guidelines for Gastric Cancer Treatment. Thesepatients underwent a median of one line of chemotherapy, completing a median of six cycles in total. Chemotherapy disruption due to unplanned hospitalizations occurred in 114(66.7%), while cessation of chemotherapy occurred in 157(91.8%), with 42 cessations primarily attributable to PC-related complications. Patients who had initiation of systemic chemotherapy had a significantly better median overall survival than those who did not(10.9 mo vs 1.6 mo, P < 0.001). Of patients who had initiation of systemic chemotherapy, those who experienced any disruptions to chemotherapy due to unplanned hospitalizations had a significantly worse median overall survival compared to those who did not(8.7 mo vs 14.6 mo, P < 0.001).CONCLUSION Gastric PC carries a grim prognosis with a clinical course fraught with disease-related complications which may attenuate any survival benefit which palliative systemic chemotherapy may have to offer. As such, investigational use of regional therapies is warranted and required validation in patients with isolated PC to maximize their survival outcomes in the long run. | Hwee Leong Tan Claramae Shulyn Chia Grace Hwei Ching Tan Su Pin Choo David Wai-Meng Tai Clarinda Wei Ling Chua Matthew Chau Hsien Ng Khee Chee Soo Melissa Ching Ching Teo | 2017 | World Journal of Gastrointestinal Oncology2017，9，3： | 6 |
| 3 | Patient-specific total endovascular aortic arch repair using custom fenestration of an off-the-shelf thoracic endovascular aortic repair aortic-stent显示文摘Physician-modified fenestrated stent-graft for thoracic endovascular aortic repair(TEVAR)has economic advantages and can be used in acute situations for aortic dissection and aneurysm involving aortic arch.[1]However,accurate alignment of fenestrations and branch arteries of the aortic arch is challenging,especially for multi-fenestration.[2]Once misaligned,complications such as branch occlusion or cerebral ischemia will occur.Details about how to align fenestrations with branch arteries of the aortic arch in TEVAR with physician-modified triple fenestrated stent-graft are elaborated in this article. | Yu Shen Kak Khee Yeung Qing-Sheng Lu | 2021 | Chinese Medical Journal2021，，12： | 3 |
| 4 | Tapering-induced enhancement of light extraction efficiency of nanowire deep ultraviolet LED by theoretical simulations显示文摘A nanowire(NW) structure provides an alternative scheme for deep ultraviolet light emitting diodes(DUV-LEDs)that promises high material quality and better light extraction efficiency(LEE). In this report, we investigate the influence of the tapering angle of closely packed Al Ga N NWs, which is found to exist naturally in molecular beam epitaxy(MBE) grown NW structures, on the LEE of NW DUV-LEDs. It is observed that, by having a small tapering angle, the vertical extraction is greatly enhanced for both transverse magnetic(TM) and transverse electric(TE) polarizations. Most notably, the vertical extraction of TM emission increased from 4.8% to 24.3%,which makes the LEE reasonably large to achieve high-performance DUV-LEDs. This is because the breaking of symmetry in the vertical direction changes the propagation of the light significantly to allow more coupling into radiation modes. Finally, we introduce errors to the NW positions to show the advantages of the tapered NW structures can be projected to random closely packed NW arrays. The results obtained in this paper can provide guidelines for designing efficient NW DUV-LEDs. | RONGHUI LIN SERGIO VALDES GALAN HAIDING SUN YANGRUI HU MOHD SHARIZAL ALIAS BILAL JANJUA TIEN KHEE NG BOON S.OOI XIAOHANG LI | 2018 | Photonics Research2018，6，5： | 3 |
| 5 | 夏热冬冷地区低碳住宅设计策略效用的量化分析显示文摘根据国家节能和能效标准及相关研究,从围护结构设计和空调器制冷采暖两个方面总结出夏热冬冷地区低碳住宅的设计策略并采集数据,按能耗水平的不同赋值于4组情景假设,再运用Design Builder Energy Plus模拟软件计算空调器能耗值和CO2排放值。结果显示,当采取节能减排措施后,该地区低碳住宅的空调器能耗(含采暖)区间为14.0~4.9kWh(m2·a),CO2排放区间为11.5~4.0kg(m2·a)。 | 刘君怡 李保峰 Khee Poh Lam | 2010 | 建筑学报2010，，S1： | 3 |
| 6 | The effect of turbulence on NLOS underwater wireless optical communication channels [Invited]显示文摘Conventional line-of-sight underwater wireless optical communication(UWOC)links suffer from huge signal fading in the presence of oceanic turbulence due to misalignment,which is caused by variations in the refractive index in the water.Non-line-of-sight(NLOS)communication,a novel underwater communication configuration,which has eased the requirements on the alignment,is supposed to enhance the robustness of the UWOC links in the presence of such turbulence.This Letter experimentally and statistically studies the impact of turbulence that arises from temperature gradient variations and the presence of different air bubble populations on NLOS optical channels.The results suggest that temperature gradient-induced turbulence causes negligible signal fading to the NLOS link.Furthermore,the presence of air bubbles with different populations and sizes can enhance the received signal power by seizing the scattering phenomena from an ultraviolet 377 nm laser diode. | Mohammed Sait Xiaobin Sun Omar Alkhazragi Nasir Alfaraj Meiwei Kong Tien Khee Ng Boon S.Ooi | 2019 | Chinese Optics Letters2019，17，10： | 2 |
| 7 | Deep-ultraviolet integrated photonic and optoelectronic devices:A prospect of the hybridization of group Ⅲ–nitrides, Ⅲ–oxides,and two-dimensional materials显示文摘Progress in the design and fabrication of ultraviolet and deep-ultraviolet groupⅢ–nitride optoelectronic devices,based on aluminum gallium nitride and boron nitride and their alloys,and the heterogeneous integration with two-dimensional and oxide-based materials is reviewed.We emphasize wide-bandgap nitride compound semiconductors(i.e.,(B,Al,Ga)N)as the deep-ultraviolet materials of interest,and two-dimensional materials,namely graphene,two-dimensional boron nitride,and two-dimensional transition metal dichalcogenides,along with gallium oxide,as the hybrid integrated materials.We examine their crystallographic properties and elaborate on the challenges that hinder the realization of efficient and reliable ultraviolet and deep-ultraviolet devices.In this article we provide an overview of aluminum nitride,sapphire,and gallium oxide as platforms for deep-ultraviolet optoelectronic devices,in which we criticize the status of sapphire as a platform for efficient deep-ultraviolet devices and detail advancements in device growth and fabrication on aluminum nitride and gallium oxide substrates.A critical review of the current status of deep-ultraviolet light emission and detection materials and devices is provided. | Nasir Alfaraj Jung-Wook Min Chun Hong Kang Abdullah A.Alatawi Davide Priante Ram Chandra Subedi Malleswararao Tangi Tien Khee Ng Boon S.Ooi | 2019 | Journal of Semiconductors2019，40，12： | 2 |
| 8 | Dovitinib demonstrates antitumor and antimetastatic activities in xenograft models of hepatocellular carcinoma显示文摘 | Hung Huynh Pierce Kah Hoe Chow Wai Ming Tai Su Pin Choo Alexander Yaw Fui Chung Hock Soo Ong Khee Chee Soo Richard Ong Ronald Linnartz Michael Ming Shi | 2011 | Journal of Hepatology2011，，3： | 2 |
| 9 | True lumen re-entry aller ex-travascul arrecan alization of a superficial femoral artery chronic totalocclusion显示文摘 | Wagner JK Chaer R A Khee R Y | 2010 | J Vase Surg2010，52，1： | 1 |
| 10 | Large-scale and high-quality III-nitride membranes through microcavity-assisted crack propagation by engineering tensile-stressed Ni layers显示文摘Epitaxially grown III-nitride alloys are tightly bonded materials with mixed covalent-ionic bonds.This tight bonding presents tremendous challenges in developing III-nitride membranes,even though semiconductor membranes can provide numerous advantages by removing thick,inflexible,and costly substrates.Herein,cavities with various sizes were introduced by overgrowing target layers,such as undoped GaN and green LEDs,on nanoporous templates prepared by electrochemical etching of n-type GaN.The large primary interfacial toughness was effectively reduced according to the design of the cavity density,and the overgrown target layers were then conveniently exfoliated by engineering tensile-stressed Ni layers.The resulting III-nitride membranes maintained high crystal quality even after exfoliation due to the use of GaN-based nanoporous templates with the same lattice constant.The microcavity-assisted crack propagation process developed for the current III-nitride membranes forms a universal process for developing various kinds of large-scale and high-quality semiconductor membranes. | Jung-Hong Min Kwangjae Lee Tae-Hoon Chung Jung-Wook Min Kuang-Hui Li Chun Hong Kang Hoe-Min Kwak Tae-Hyeon Kim Youyou Yuan Kyoung-Kook Kim Dong-Seon Lee Tien Khee Ng Boon S.Ooi | 2022 | Opto-Electronic Science2022，1，10： | 1 |
| 11 | Anti-allergic actions of rottlerin from Mallotus philippinensis in experimental mast cell-mediated anaphylactic models显示文摘 | Tze Khee Chan David S.W. Ng Chang Cheng Shou Ping Guan Hock Meng Koh W.S. Fred Wong | 2013 | Phytomedicine2013，，10： | 1 |
| 12 | A Meta-Analysis of Unrelated Donor Umbilical Cord Blood Transplantation versus Unrelated Donor Bone Marrow Transplantation in Adult and Pediatric Patients显示文摘 | William Ying Khee Hwang Miny Samuel Daryl Tan Liang Piu Koh Winston Lim Yeh Ching Linn | 2007 | Biology of Blood and Marrow Transplantation2007，，4： | 1 |
| 13 | Long-term follow-up of Asian patients younger than 46 years with acute myeloid leukemia in first complete remission: comparison of allogeneic vs. autologous hematopoietic stem cell transplantation显示文摘 | Yvonne Su Ming Loh Liang Piu Koh Bee Choo Tai William Ying Khee Hwang Yeh Ching Linn Yeow Tee Goh Patrick Huat Chye Tan | 2007 | Leukemia & Lymphoma2007，，1： | 1 |
| 14 | Demonstration of a low‐complexity memory‐polynomial‐aided neural network equalizer for CAP visible‐light communication with superluminescent diode显示文摘Visible-light communication(VLC)stands as a promising component of the future communication network by providing high-capacity,low-latency,and high-security wireless communication.Superluminescent diode(SLD)is proposed as a new light emitter in the VLC system due to its properties of droop-free emission,high optical power density,and low speckle-noise.In this paper,we analyze a VLC system based on SLD,demonstrating effective implementation of carrierless amplitude and phase modulation(CAP).We create a low-complexity memory-polynomial-aided neural network(MPANN)to replace the traditional finite impulse response(FIR)post-equalization filters of CAP,leading to significant mitigation of the linear and nonlinear distortion of the VLC channel.The MPANN shows a gain in Q factor of up to 2.7 dB higher than other equalizers,and more than four times lower complexity than a standard deep neural network(DNN),hence,the proposed MPANN opens a pathway for the next generation of robust and efficient neural network equalizers in VLC.We experimentally demonstrate a proof-of-concept 2.95-Gbit/s transmission using MPANN-aided CAP with 16-quadrature amplitude modulation(16-QAM)through a 30-cm channel based on the 442-nm blue SLD emitter. | Fangchen Hu Jorge A.Holguin-Lerma Yuan Mao Peng Zou Chao Shen Tien Khee Ng Boon S.Ooi Nan Chi | 2020 | Opto-Electronic Advances2020，3，8： | 1 |
| 15 | Production and Processing of Soy- beans and Nutrition al ld Safety of Isonavone and Other Soy Products for Human Health 显示文摘 | Mying - sook choi Khee Choon Rhee | 2006 | Joumar of Medic Food2006，9，10： | 1 |
| 16 | Immunogenicity of engineered antibodies显示文摘 | William Ying Khee Hwang Jefferson Foote | 2005 | Methods2005，，1： | 1 |
| 17 | Aqueous extraction—An alternative oilseed milling process显示文摘 | Carl M. Cater Khee Choon Rhee Robert D. Hagenmaier Karl F. Mattil | 1974 | Journal of the American Oil Chemists Society1974，，4： | 1 |
| 18 | Pigmentedvillonodular synovitis : radiologic-pathologic correlation显示文摘 | Murphey Ml) Khee JH Lewis RB | 2008 | Radiographics2008，28，5： | 1 |
| 19 | Methods and strategies of peptide ligation显示文摘 | JAMES P TAM JIAXI XU KHEE DONG EOM | 2001 | Biopolymers (Pept Sci)2001，60，： | 1 |
| 20 | Nicotinic acid-induced insulin resistance is related to increased circulating fatty acids and fat oxidation but not muscle lipid content显示文摘 | Ann M Poynten Seng Khee Gan Adamandia D Kriketos Anthony O'Sullivan John J Kelly Bronwyn A Ellis Donald J Chisholm Lesley V Campbell | 2003 | Metabolism2003，，6： | 1 |
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