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| 1 | Chemically tailored molecular surface modifiers for efficient and stable perovskite photovoltaics显示文摘Perovskite solar cells(PSCs)have attracted intense attention based on their high power conversion efficiency and low production cost.However,due to the polycrystalline nature and the intrinsic hydrophilicity of the metal halide perovskite moieties,the photovoltaic performance of PSCs is largely limited by defects within the polycrystalline perovskites and the sensitivity to moisture.In this perspective,we focus on the chemically tailored interface materials to passivate the defects and improve the moisture stability of PSCs.First,we provide a brief overview of various molecular interface modifiers.Thereafter we provide examples from our recent work on organic ammonium halide‐based passivation materials as representatives to illustrate the design strategies and the modification effects.In the end,we shed light on the future devel-opment of organic ammonium halides for applications in PSCs. | Yuhang Liu Bitao Dong Anders Hagfeldt Jingshan Luo Michael Graetzel | 2021 | SmartMat2021，2，1： | 4 |
| 2 | A design method for high fabrication tolerance integrated optical mode multiplexer显示文摘The tapered asymmetric directional coupler has the potential to realize high fabrication tolerance and high transmission efficiency on-chip mode multiplexer.However,the geometry parameter selection of tapered structure remains empirical.In this paper,we propose a design method for the tapered structure based on genetic algorithm.Combined with the adjusted coupling equations and interpolation method,lowtime-cost optimization can be realized.Three mode multiplexers(TE0&TE1,TE0&TE2 and TE0&TE5)are designed by our method.According to simulation results,the insertion loss of the designed devices is lower than 1.8 dB and the crosstalk is lower than-15 dB when the fabrication error is within required range(±10 nm for TE0&TE2 and TE0&TE5,and±20 nm for TE0&TE1)in the bandwidth of 1.5–1.6μm.In addition,the entire optimization process takes only 2 h for each device,which is around the time cost of a single 3 D simulation. | Bitao SHEN Haowen SHU Linjie ZHOU Xingjun WANG | 2020 | Science China(Information Sciences)2020，63，6： | 3 |
| 3 | Mobility in China,2020:a tale of four phases显示文摘2020 was an unprecedented year;with rapid and drastic changes in human mobility due to the COVID-19 pandemic.To understand the variation in commuting patterns among the Chinese population across stable and unstable periods,we used nationwide mobility data from 318 million mobile phone users in China to examine the extreme fluctuations of population movements in 2020,ranging from the Lunar New Year travel season(chunyun),to the exceptional calm of COVID-19 lockdown,and then to the recovery period.We observed that cross-city movements;which increased substantially in chunyun and then dropped sharply during the lockdown,are primarily dependent on travel distance and the socio-economic development of cities.Following the Lunar New Year holiday,national mobility remained low until mid-February,and COVID-19 interventions delayed more than 72.89 million people returning to large cities.Mobility network analysis revealed clusters of highly connected cities,conforming to the social-economic division of urban agglomerations in China.While the mass migration back to large cities was delayed,smaller cities connected more densely to form new clusters.During the recovery period after travel restrictions were lifted,the netflows of over 55%city pairs reversed in direction compared to before the lockdown.These findings offer the most comprehensive picture of Chinese mobility at fine resolution across various scenarios in China and are of critical importance for decision making regarding future public-health-emergency response,transportation planning and regional economic development,among others. | Suoyi Tan Shengjie Lai Fan Fang Ziqiang Cao Bin Sai Bing Song Bitao Dai Shuhui Guo Chuchu Liu Mengsi Cai Tong Wang Mengning Wang Jiaxu Li Saran Chen Shuo Qin Jessica R.Floyd Zhidong Cao Jing Tan Xin Sun Tao Zhou Wei Zhang Andrew J.Tatem Petter Holme Xiaohong Chen Xin Lu | 2021 | National Science Review2021，8，11： | 3 |
| 4 | Charge recombination in dye-sensitized nanoporous TiO_(2)solar cell显示文摘DSSC has been a subject of intense study throughout the world. The efforts to investigate DSSC are mainly focused on how to increase light absorption, speed electron transport in circuit and reduce charge recombina-tion. In this article, the development of charge recombination in DSSC is discussed, and the investigating techniques, main paths, mechanism and main inhibiting methods of charge recombination in DSSC are also described. | ZHANG Zhe ZHOU Baoxue GE Weijie XIONG Bitao ZHENG Qing CAI Weimin | 2005 | Chinese Science Bulletin2005，50，21： | 3 |
| 5 | Highly-ordered dye-sensitized TiO_2 nanotube arrays film used for improving photoelectrochemical electrodes显示文摘Thin titanium oxide nanotube arrays (TNAs) films were synthesized by anodization of titanium foil in an aqueous dimethyl sulfoxide solution using a platinum foil counter electrode.TNAs up to 6.8 μm in length,120 nm in inner pore diameter,and 20 nm in wall thickness were obtained by 40 V potentials anodization for 24 h.Their microstructures and surface morphologies were characterized by XRD,TEM,SAED and UV-vis spectroscopy.The photoelectrochemical properties of as-prepared unsensitized and dye-sensitized TNAs electrodes were examined under simulated solar light (AM 1.5,100 mW/cm2) illumination.The results showed that the photocurrent of the dye-sensitized TNAs electrodes reached 6.9 mA/cm2,which was 6 times more than that of the dye-sensitized TiO2 nanoparticles (TNPs) electrodes.It implied that the electron transport process and the charge recombination suppression within TNAs electrodes were much more favorable in comparison with that in the TNPs electrodes.Electrodes applying such kind of titania nanotubes will have a potential to further enhance the efficiencies of TNAs-based dye-sensitized solar cells. | XIONG BiTao WANG ChangRong LUO JunYan CHEN BaoXin ZHOU BaoXue ZHU ZhiYan | 2013 | Science China Chemistry2013，56，1： | 3 |
| 6 | Monte Carlo simulation of GEM-based for 14 MeV neutron detector显示文摘A new concept of neutron detector based on Gas Electron Multiplier(GEM) technology is presented in this paper,in which a novel multi-layer high density polyethylene(HDPE) as neutron-to-proton converter is proposed and studied with Geant4 toolkit for fast 14 MeV neutron.Our preliminary results show that the detection efficiency of the detector with 400 converter units is higher than 2.3% and reconstruction accuracy of the incident neutron position is higher than 2.6%. | WANG XiaoDong ZHANG YuLian ZHANG ChunHui HU BiTao | 2013 | Science China(Physics,Mechanics & Astronomy)2013，56，9： | 3 |
| 7 | Microwave assisted one-pot synthesis of novel molecular clefts with only one chiral arm based on deoxycholic acid显示文摘为新奇分子的 clefts 的合成的一个快速、安全、有效的方法基于 deoxycholic 被报导。七新分子的 clefts 在好收益被综合了(89 98%) 。这个方法证明了极其简单、高度有效。这些受体的结构被 1H NMR,红外, MS 系列和元素的分析证实。 | BiTao Zeng Zhi Gang Zhao Xing Li Liu Yun Shi | 2008 | Chinese Chemical Letters2008，19，1： | 3 |
| 8 | Single-cell RNA sequencing reveals B cell-T cell interactions in vascular adventitia of hyperhomocysteinemia-accelerated atherosclerosis显示文摘Dear Editor Cardiovascular disease(CVD)is the leading cause of death around the world(Truelsen,et al.,2015).Atherosclerosis,the dominant underlying cause of CVD,is a chronic inflam-matory disease characterized by lipid accumulation and immune cell infiltration in plaques and vessels(Weber,et al.,1950).The immune microenvironment is critical for the development of atherosclerosis.Homocysteine(Hcy)is an intermediate product of methionine metabolism,and its ele-vation in plasma(>15μmol/L),known as hyperhomocys-teinemia(HHcy),is an independent risk factor for atherosclerosis.HHcy is more common in Asia because of genetic factors and dietary habits(Huo,et al.,2015).folic acid supplement is one of the most important way to treat HHcy in clinic.Although HHcy potentiates atherosclerosis mainly through endothelial injury and inflammatory activa-tion(Luo,et al.,2016),a comprehensive understanding of the immune microenvironment and potential mechanisms in HHcy-accelerated atherosclerotic aortas(HHcy-AA)is still lacking. | Xiaolong Ma Jiacheng Deng Lulu Han Yuwei Song Yutong Miao Xing Du Guohui Dang Dongmin Yang Bitao Zhong Changtao Jiang Wei Kong Qingbo Xu Juan Feng Xian Wang | 2022 | Protein & Cell2022，13，7： | 2 |
| 9 | Broadband isolated attosecond pulse generation in a two-color laser field combined with an orthogonally polarized laser pulse显示文摘We present a method to generate broadband isolated attosecond pulses. Using a two-color laser field, which is synthesized by a mid-infrared (12.5 fs, 2000 nm) and a weaker (12 fs, 800 nm) pulse in the x direction, a modulated supercontinuum from 290 to 430 eV is obtainable. By properly adding a second-harmonic control field of the driving pulse in the y direction, the short quantum path is well selected and a smooth supercontinuum from 290 to 440 eV is generated. The bandwidth of the supercontinuum can be controlled by adjusting the electric field of the control pulse in the x direction. When the electric field increases to 0.051 a.u., a smooth supercontinuum from 295 to 520 eV is obtained. Using this method we expect that isolated 63-as attosecond pulses with tunable central wavelengths are straightforwardly obtained. | DU HongChuan WANG XiaoShan HU BiTao | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，1： | 2 |
| 10 | Unsupervised hyperspectral unmixing based on robust nonnegative dictionary learning显示文摘Considering the sparsity of hyperspectral images(HSIs),dictionary learning frameworks have been widely used in the field of unsupervised spectral unmixing.However,it is worth mentioning here that existing dictionary learning method-based unmixing methods are found to be short of robustness in noisy contexts.To improve the performance,this study specifically puts forward a new unsupervised spectral unmixing solution.For the reason that the solution only functions in a condition that both endmembers and the abundances meet non-negative con-straints,a model is built to solve the unsupervised spectral un-mixing problem on the account of the dictionary learning me-thod.To raise the screening accuracy of final members,a new form of the target function is introduced into dictionary learning practice,which is conducive to the growing robustness of noisy HSI statistics.Then,by introducing the total variation(TV)terms into the proposed spectral unmixing based on robust nonnega-tive dictionary learning(RNDLSU),the context information under HSI space is to be cited as prior knowledge to compute the abundances when performing sparse unmixing operations.Ac-cording to the final results of the experiment,this method makes favorable performance under varying noise conditions,which is especially true under low signal to noise conditions. | LI Yang JIANG Bitao LI Xiaobin TIAN Jing SONG Xiaorui | 2022 | Journal of Systems Engineering and Electronics2022，33，2： | 1 |
| 11 | Kinetic study on solid state reaction for synthesis of LiBOB 显示文摘 | Yu Bitao Qiu Weihua Li Fushen | 2007 | Journal of Power Sources2007，174，2： | 1 |
| 12 | Facile formation of mixed phase porous TiO2 nanotubes and enhanced visible-light photocatalytic activity显示文摘 | Liu Bitao Peng Lingling | 2013 | Journal of Alloys and Compounds2013，571，3： | 1 |
| 13 | Fractional order sliding-mode control based on parameters auto-tuning for velocity control of permanent magnet synchronous motor显示文摘 | ZHANG BITAO PI YOUGUO LUO YING | 2012 | ISA Transactions2012，51，： | 1 |
| 14 | Regulatory T cells inhib- it dendritic cells by lymphocyte activation gene-3 engage- ment of MHC class II 显示文摘 | Bitao L Craig W Janine L | 2008 | J Immunol2008，180，15： | 1 |
| 15 | Biomorphic synthesis of long ZnO hollow fibers with porous walls显示文摘 | Bitao Su Ke Wang Na Dong | 2009 | Journal of Materials processing Technology2009，209，8： | 1 |
| 16 | Study on the Clinical Effectiveness of Thymectomy for Myasthenia Gravis显示文摘Objectiv:To investigate the theoretical basis and clinical significance of thymectomy in the treatment of myasthenia gravis (MG). Methods:Analyze the changes in the contents of serum AchRab and sIL-2R, lymphocyte subtypes in Peripheral blood lymphocytes before and after thymectomy in 69 patients. Results:In the study group significant changes were found in serum contents of AchRab and sIL-2R before and after operation and there was also remarkable change in the number and constitution of peripheral blood lymphocyte subtypes. Conclusion:Thymectomy is an effective therapy for MG. | PAN Tiecheng, YAN Hua, ZHANG Ni, PAN Youming, TANG Yingxiong, WEN Xiang, SONG Dingwei, HU Ming, LIU Ligang, LIU Zixiong, YANG Mingshan, XU Jinzhi, PU Bitao, GAO Boting Department of Thoracis Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China | 2002 | The Chinese-German Journal of Clinical Oncology2002，1，1： | 1 |
| 17 | Preparation of TiO^2/PS complex nanoparticles 显示文摘 | Su Bitao Ma Zhanying Min Shixiong | 2007 | Materials Science and Engineering: A2007，458，12： | 1 |
| 18 | Fractional order sliding-mode control based on parameters auto-tuning for velocity control of permanent magnet synchronous motor显示文摘 | BiTao Zhang YouGuo Pi Ying Luo | 2012 | ISA Transactions2012，，5： | 1 |
| 19 | Photocatalytic property of ZnTiO3-TiOz nanq-composite materials 显示文摘 | Su Bitao Zhu Pingwu Xu Jingjing | 2011 | Chinese J Appl Chem2011，28，1： | 1 |
| 20 | New existence and multiplicity of nontrivial solutions for nonlocal elliptic Kirchhoff type problems显示文摘 | Bitao Cheng | 2012 | Journal of Mathematical Analysis and Applications2012，，2： | 1 |
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