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Recent advances in flexible photodetectors based on 1D nanostructures

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Journal of Semiconductors 2019年第11期40卷 13-29页

作者： Senpo yip Lifan Shen Johnny c Ho Department of Materials Science and Engineering City University of Hong KongHong KongChina Shenzhen Research Institute City University of Hong KongShenzhen 518057China college of Microelectronics and Key Laboratory of Optoelectronics Technology Faculty of Information TechnologyBeijing University of TechnologyBeijing 100124China

Semiconductor nanowires have demonstrated excellent electronic and optoelectronic *** integrated into photodetectors,excellent device performance can be easily *** from the exceptional performance,these nanowires can also enable robust and mechanically flexible photodetectors for various advanced utilizations that the rigid counterparts cannot *** unique applications include personal healthcare,next-generation robotics and many *** this review,we would first discuss the nanowire fabrication techniques as well as the assembly methods of constructing largescale nanowire ***,the recent development of flexible photodetectors based on these different nanowire material systems is evaluated in *** the same time,we also introduce some recent advancement that allows individual photodetectors to integrate into a more complex system for advanced ***,a short conclusion and outlook of challenges faced in the future of the community is presented.

关键词： nanowires flexible photodetectors

Multifunctional semitransparent organic solar cells with excellent infrared photon rejection

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chinese chemical Letters 2020年第6期31卷 1608-1611页

作者： Xue Li Ruoxi Xia Kangrong Yan Hin-Lap yip Hongzheng chen chang-Zhi Li State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China State Key Laboratory of Luminescent Materials and Devices School of Materials Science and EngineeringSouth China University of TechnologyGuangzhou 510640China

Semitransparent organic solar cells(ST-OScs)have the potentials to open promising applications that differ from those of conventional inorganic ones,such as see-through power windows with both energy generation and heat insulation ***,to achieve so,there remain significant challenges,especially for balancing critical parameters,such as power conversion efficiency(PcE),average visible transparency(AVT)and low energy infrared photon radiation rejection(IRR)to realize the full potentials of ***,we demonstrate the new design of ST-OScs through the rational integration of organic materials,transparent electrode and infrared photon reflector in one *** the assistance of optical simulation,new ST-OScs with precise layout exhibit state-of-art performance,with near 30%AVT and PcE of 7.3%,as well as an excellent IRR of over 93%(780-2500 nm),representing one of best multifunctional ST-OScs with promising perspective for window application.

关键词： Semitransparent organic solar cell Distributed Bragg reflector Ultrathin silver film Infrared radiation rejection Average visible transparency

DEcREASING PITTING SUScEPTIBILITY OF PASSIVE FILMS ON X70 PIPELINE STEEL IN Nacl SOLUTIONS BY ILLUMINATION

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Acta Metallurgica Sinica(English Letters) 2006年第2期19卷 91-97页

作者： w.c. Zhu w.H. Leng J.Q. Zhang c.N. cao Department of chemistry Zhejiang University Hangzhou 310027 China State Key Laboratory for corrosion and Protection of Metals Institute of Metal Research The Chinese Academy of Sciences Shenyang 110016 China

The influence of UV illumination on passivity and pitting susceptibility on X70 pipoeline steel in a borate buffer （pH=8.4 ） solution containing Nacl is described. It is observed that illumination of the sample leads to a decrease in its pitting susceptibility as indicated by pitting potential and incubation time measurements in chloride containing electrolytes. This effect is strongly dependent on the applied potential during passivation. The electronic properties of the passive films on X70 steel were studied by Mott-Schottky analysis and photocurrent transient measurements. The results indicated that illumination during passivation led to modifications in the electronic properties of the passive films, mainly to a decrease of the bulk doping and an increase in the surface state density. The cause for the decrease in the pitting susceptibility is preliminary explained in terms of such modifications of the passive flm.

关键词： X70 pipeline steel pitting susceptibility illumination passivation

The impact of cOVID-19 on ASEAN

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Economic and Political Studies 2021年第2期9卷 166-185页

作者： Terence Tai Leung chong Xiaoyang Li cornelia yip Department of Economics The Chinese University of Hong KongHong Kong SARChina cUHK Business School The Chinese University of Hong KongHong Kong SARChina

Starting in December 2019,cOVID-19 had been spreading across the world on a limited scale for a quarter until March 2020 when the death toll in the countries comprising the Association of Southeast Asian Nations(ASEAN)finally started to ***,despite the relatively late outbreak in the region,the ASEAN market had already plunged along with other regional markets across the world amid heightened concern about the economic impact of the biggest viral killer in *** this paper,we examine the economic impact of coronavirus on different ASEAN countries separately by analysing their respective economic figures for the first two quarters in *** allows us to delineate the overall picture of its impact on ASEAN countries as well as to provide an estimation for the future outlook of the ASEAN economic *** propose that the slowing growth,the sluggish recovery of trade and the cross-country transmission of unemployment are three significant risk factors that the ASEAN economies are faced with.

关键词： cOVID-19 ASEAN economic growth trade unemployment

Optical spectroscopy study of charge density wave order in Sr3Rh4Sn13 and(Sr0.5ca0.5)3Rh4Sn13

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Science china(Physics,Mechanics & Astronomy) 2017年第4期60卷 51-56页

作者： w.J.Ban H.E wang c.w.Tseng c.N.Kuo c.S.Lue N.L.wang Institute of Physics Chinese Academy of SciencesBeijing 100190China Department of Physics Cheng Kung UniversityTainan 70101China International center for Quantum Materials School of PhysicsPeking UniversityBeijing 100871China collaborative Innovation center of Quantum Matter Beijing 100871China

we perform optical spectroscopy measurement on single-crystal samples of Sr3Rh4Sn13 and （Sr0.5ca0.5）3Rh4Sn13. Formation of cDw energy gap was clearly observed for both single-crystal samples when they undergo the phase transitions. The existence of residual Drude components in σ1（ω） below Tcow indicates that the Fermi surface is only partially gapped in the cDw state. The obtained value of 2A/kBTcow is roughly 13 for both Sr3Rh4Sn13 and （Sr0.5ca0.5）3Rh4Sn13 compounds, which is considerably larger than the mean-field value based on the weak-coupling BcS theory. The measurements provide optical evidence for the strong coupling characteristics of the cDw phase transition.

关键词： charge density wave optical spectroscopy intermetallic compounds

ELEcTROcHEMIcAL INVESTIGATION ON cARBON NANOTUBE FILM wITH DIFFERENT PRETREATMENTS

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Acta Metallurgica Sinica(English Letters) 2003年第4期16卷 295-301页

作者： c.G.Hu w.L.wang w.Zhu DepartmentofAppliedPhysics ChongqingUniversityChongaing400044China KeyLaboftheEducationMinistryforPhotoelectricTechnologyandSystem ChongqingUniversityChongqing400044China Departmentofchemistry ChongqingUniversityChongqing400044ChinaManuscriptreceived25November2002

wide potential windows were found at carbon nanotube film electrodes in neutral solutions after being treated with nitric acid and mixed acid. Electrochemical reversibility was investigated at carbon nanotube films with different pretreatments for ferri/ferrocyanide and quinone /hydroquinone. carbon nanotube film electrodes presented quasi-reversible electrochemical behavior for both electrolytes. In the range of scan rate, carbon nanotube film electrodes treated with acids showed heterogeneous electron-transfer properties, which was mainly controlled by its electron state density on the surface of the film. On the whole, the carbon nanotube electrode with nitric acid treatment presented the best electrochemical behaviors, so we chose it as an analytical electrode to determine the trace compound in dilute solution. The results demonstrated that this new electrode material exhibits superior performance characteristics for the detection of azide anion.

关键词： carbon nanotubes cyclic voltammetry treatment azide anion

Planning and control of cOP-Switch-Based Planar Biped walking

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Journal of Bionic Engineering 2011年第1期8卷 33-48页

作者： X. Luo w. Li c. Zhu School of Mechanical Engineering Southeast University Nanjing 210018 P. R. China Department of Systems Life Engineering Maebashi Institute of Technology Gunma Prefecture 371-0816 Japan

Efficient walking is one of the main goals of researches on biped robots. A feasible way is to translate the understanding from human walking into robot walking, for example, an artificial control approach on a human like walking structure. In this paper, a walking pattern based on center of Pressure （cOP） switched and modeled after human walking is introduced firstly. Then, a parameterization method for the proposed walking gait is presented. In view of the complication, a multi-space planning method which divides the whole planning task into three sub-spaces, including simplified model space, work space and joint space, is proposed. Furthermore, a finite-state-based control method is also developed to implement the proposed walking pattern. The state switches of this method are driven by sensor events. For convincing verification, a 2D simulation system with a 9-1ink planar biped robot is developed. The simulation results exhibit an efficient walking gait.

关键词： biped walking bio-inspired cOP switch control multi-space planning simulation

Hepatic adenoma mimicking a metastatic lesion on computed tomography-positron emission tomography scan

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world Journal of Gastroenterology 2013年第27期19卷 4432-4436页

作者： Darryl Lim Ser Yee Lee Kiat Hon Lim chung yip chan Department of General Surgery Singapore General Hospital Department of Hepatopancreatobiliary and Transplant Surgery Singapore General Hospital Department of Surgical Oncology National Cancer Centre Duke-National University of Singapore (NUS) Graduate Medical School Department of Pathology Singapore General Hospital

Positron emission tomography (PET) using 18F-fluorodeoxyglucose ( 18F-FDG) is an imaging modality which reflects cellular glucose metabolism. Most malignant cells accumulate and trap 18F-FDG, allowing the visualisation of increased uptake. It is hence widely used to differentiate malignant from benign lesions. "False positive" findings of hepatic lesions have been described in certain instances such as hepatic abscesses, but are rare in cases involving hepatocellular adenomas. To our knowledge, there have been only 7 reports in the English literature documenting PET-avid hepatocellular adenomas; 6 of the 7 reports were published in the last 3 years with the first report by Patel et al. we report the case of a 44-year-old chinese female patient with a history of cervical adenocarcinoma, referred for a hepatic lesion noted on a surveillance computed tomography (cT) scan. A subsequent cT-PET performed showed a hypermetabolic lesion (standardized uptake value 7.9) in segment Ⅳb of the liver. After discussion at a multidisciplinary hepato-pancreato-biliary conference, the consensus was that of a metastatic lesion from her previous cervical adenocarcinoma, and a resection of the hepatic lesion was performed. Histology revealed features consistent with a hepatocyte nuclear factor-1 α inactivated steatotic hepatocellular adenoma.

关键词： Hepatic adenoma Positron emission tomography 18F-fluorodeoxyglucose Hepatocellular adenoma Hepatocyte nuclear factor-1 α

Learning about good nutrition with the 5-color front-of-package label"Nutri-Score":an experimental study

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Food Science and Human wellness 2024年第3期13卷 1195-1200页

作者： Robin c.Hau Klaus w.Lange University of Applied Sciences Landshut Landshut 84036Germany Faculty of Human Sciences University of RegensburgRegensburg 93040Germany

The Nutri-Score is a 5-color front-of-pack nutrition label designed to provide consumers with an easily understandable guideline to the healthiness of food *** impact that the Nutri-Score may have on consumers'choices is unclear since different experimental paradigms have found vastly different effect *** the present study,we have investigated how student participants change a hypothetical personal 1-daydietary plan after a learning phase during which they learn about the Nutri-Scores of the available food *** were instructed to compose a healthy diet plan in order that the question of whether the NutriScore would improve their ability to compose a healthy dietary plan could be investigated,independent of the question of whether they would apply this knowledge in their ordinary *** found a substantial(cohen's d=0.86)positive impact on nutritional quality(as measured by the Nutrient Profiling System score of the Food Standards Agency)and a medium-sized(cohen's d=0.43)reduction of energy *** content reduction was larger for participants who had initially composed plans with higher energy *** results suggest that the Nutri-Score has the potential to guide consumers to healthier food *** remains unclear,however,whether this potential will be reflected in real-life dietary choices.

关键词： Nutri-Score Front-of-package label Nudge Nutrition Health