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Porous β-cyclodextrin nanotubular assemblies enable high-efficiency removal of bisphenol micropollutants from aquatic systems

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Nano research 2020年第7期13卷 1933-1942页

作者： Wenya He Xiaoyan Ren Zhiqiang Yan Jin Wang Lehui Lu State key Laboratory of Electroanalytical chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022China University of chinese Academy of Sciences Beijing 100039China Department of chemistry&Physics State University of New York at Stony BrookStony BrookNew York 11790USA

The performance of water purification by adsorption method has been limited owing to the fact that most of current available adsorbents fail to achieve satisfactory removal performance for organic ***,we report the design and synthesis of novel porous polymeric adsorbent built fromβ-cyclodextrin(B-cD),in whichβ-cD molecules are arranged in an ordered bis(β-cD)tubular *** induction of bis(B-cD)units renders them high adsorption affinity toweard bisphenols(bisphenol A and its analogues bisphenol B,bisphenol F and bisphenol S),the typical endocrine disruptors,via the formation of stable host-guest inclusion complexes in aquatic *** combination with their high porosity(Brunauer-Emmett-Teller(BET)surface area of 150 m2·g-1),abundantβ-cD content and fast sorption kinetics,the obtained adsorbent outperforms commercial water purifier in elimination of bisphenol micropollutants from potable *** work may open a new avenue for designing highly eficient adsorbents for removal of organic micropollutants from aquatic systems.

关键词： water remediation bisphenol micropollutant polymeric p-cyclodextrin(β-cD) binding affinity β-cD dimer

Modulating the optical and electrical properties of MAPbBr_(3) single crystals via voltage regulation engineering and application in memristors

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Light(Science & Applications) 2020年第1期9卷 957-967页

作者： Jun Xing chen Zhao Yuting Zou Wenchi kong Zhi Yu Yuwei Shan Qingfeng Dong Ding Zhou Weili Yu chunlei Guo The Guo Photonics Laboratory State Key Laboratory of Applied OpticsChangchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of Sciences130033 ChangchunChina University of chinese Academy of Sciences 100049 BeijingChina State key Laboratory of Supramolecular Structure and Materials Jilin University130012 ChangchunChina State key Laboratory of Luminescence and Applications Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of Sciences130033 ChangchunChina The Institute of Optics University of RochesterRochesterNY 14627USA

Defect density is one of the most significant characteristics of perovskite single crystals(PScs)that determines their optical and electrical properties,but few strategies are available to tune this ***,we demonstrate that voltage regulation is an efficient method to tune defect density,as well as the optical and electrical properties of PScs.A three-step carrier transport model of MAPbBr_(3) PScs is proposed to explore the defect regulation mechanism and carrier transport dynamics via an applied *** and steady-state photoluminescence measurements subsequently show that the surface defect density,average carrier lifetime,and photoluminescence intensity can be efficiently tuned by the applied *** particular,when the regulation voltage is 20 V(electrical poling intensity is 0.167 Vμm^(−1)),the surface defect density of MAPbBr_(3) PScs is reduced by 24.27%,the carrier lifetime is prolonged by 32.04%,and the PL intensity is increased by 112.96%.Furthermore,a voltage-regulated MAPbBr_(3) PSc memristor device shows an adjustable multiresistance,weak ion migration effect and greatly enhanced device *** regulation is a promising engineering technique for developing advanced perovskite optoelectronic devices.

关键词： optical electrical defect

Invisible Visual cryptography

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chinese Physics Letters 2017年第11期34卷 36-40页

作者：史祎诗杨秀波 college of Opto-Electronics University of Chinese Academy of Sciences Academy of Opto-Electronics Chinese Academy of Sciences

We propose to realize visual cryptography in an indirect way with the help of diffractive optics, the pure-amplitude keys being substituted with the phase-only keys that are invisible for common-used intensity detectors, leading to the significantly enhanced security and improved usability for practice. Three typical realizations are provided by using static or dynamic diffractive optical elements, and the new concept of invisible visual cryptography （IVc） may be established. This concept is demonstrated by a compact opto-electronic system with only one spatial light modulator within time-delayed exposure, maintaining the fast speed of decryption and no requirement to the calculation of decryption in conventional visual cryptography. Further, IVc shows the immunity to noises and good information capacity, which is partly inherited from diffractive optics. IVc might suggest a new strategy for visual cryptography with the respective of diverse realizations, such as opto-electronic or even bio-chemical or other methods.

关键词： IVc SLM

The origin and evolution of carpels and fruits from an evo-devo perspective

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Journal of Integrative Plant Biology 2023年第2期65卷 283-298页

作者： Hongyan Liu Jun Li Pichang Gong chaoying He State key Laboratory of Systematic and Evolutionary Botany Institute of BotanyChinese Academy of SciencesBeijing 100093China University of chinese Academy of Sciences Beijing 100049China The Innovative Academy of Seed Design Chinese Academy of SciencesBeijing 100101China

The flower is an evolutionary innovation in angiosperms that drives the evolution of *** carpel is integral to a flower and develops into fruits after fertilization,while the perianth,consisting of the calyx and corolla,is decorative to facilitate pollination and protect the internal organs,including the carpels and ***,the nature of flower origin is carpel and stamen origin,which represents one of the greatest and fundamental unresolved issues in plant evolutionary ***,we briefly summarize the main progress and key genes identified for understanding floral development,focusing on the origin and development of the *** ABc models have played pioneering roles in elucidating flower development,but remain insufficient for resolving flower and carpel *** genetic basis for carpel origin and subsequent diversification leading to fruit diversity also remains *** on current research progress and technological advances,simplified floral models and integrative evolutionary-developmental(evodevo)strategies are proposed for elucidating the genetics of carpel origin and fruit *** birth of a few master regulatory genes and subsequent functional diversification might play a pivotal role in these evolutionary *** the identified transcription factors,AGAMOUS(AG)and cRABS cLAW(cRc)may be the two core regulatory genes for carpel origin as they determine carpel organ identity,determinacy,and ***,a comparative identification of their protein-protein interactions and downstream target genes between flowering and non-flowering plants from an evo-devo perspective may be primary projects for elucidating carpel origin and development.

关键词： AGAMOUS cRABS cLAW carpel origin evo-devo floral development fruit evolution

The 8×10 GHz Receiver Optical Subassembly Based on Silica Hybrid Integration Technology for Data center Interconnection

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chinese Physics Letters 2017年第10期34卷 39-43页

作者： chao-Yi Li Jun-Ming An Jiu-Qi Wang Liang-Liang Wang Jia-Shun Zhang Jian-Guang Li Yuan-Da Wu Yue Wang Xiao-Jie Yin Yong Li Fei Zhong State key Laboratory on Integrated Optoelectronics Institute of Semiconductors Chinese Academy of Sciences college of Material Science and Optoelectronic Technology University of Chinese Academy of Sciences Beijing 100049 college of Software Beihang University Beijing 100191 4Henan Shi Jia Photons Technology Co. Ltd Hebi 458030

An 8×10 GHz receiver optical sub-assembly （ROSA） consisting of an 8-channel arrayed waveguide grating （AWG） and an 8-channel PIN photodetector （PD） array is designed and fabricated based on silica hybrid integration technology. Multimode output waveguides in the silica AWG with 2% refractive index difference are used to obtain fiat-top spectra. The output waveguide facet is polished to 45° bevel to change the light propagation direction into the mesa-type PIN PD, which simplifies the packaging process. The experimentM results show that the single channel I dB bandwidth of AWG ranges from 2.12nm to 3.06nm, the ROSA responsivity ranges from 0.097 A/W to 0.158A/W, and the 3dB bandwidth is up to 11 GHz. It is promising to be applied in the eight-lane WDM transmission system in data center interconnection.

关键词： AWG GHz Receiver Optical Subassembly Based on Silica Hybrid Integration Technology for Data center Interconnection The 8 PD

Promoting Ethylene (co)Polymerization in Aliphatic Hydrocarbon Solvents Using tert-Butyl Substituted Nickel catalysts

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chinese Journal of chemistry 2022年第2期40卷 215-222页

作者： Ao chen Daohong Liao changle chen Hefei National Laboratory for Physical Sciences at the Microscale CAS Key Laboratory of Soft Matter ChemistryDepartment of Polymer Science and EngineeringUniversity of Science and Technology of ChinaHefeiAnhui 230026China

In the past few decades,the development of high-performance catalysts has been a key driving force and a center of research efforts in the field of olefin ***,a major discrepa ncy exists between in dustrial researches which utilize aliphatic hydrocarb on solventsz and academic researches which predominantly focus the catalytic properties in aromatic *** this con-tribution,a novel diaryl-methyl aniline bearing eight tert-butyl groups was prepared and subsequently transformed to four different kinds of imine-type *** corresponding nickel complexes as well as their counterparts derived from diphenyl-methyl aniline without the tert-butyl groups were prepared and investigated in ethylene polymerization.

关键词： Ethylene polymerization Polyethylene Nickel Solvent effects Steric hindranee

Birefringent response of graphene oxide film structurized via femtosecond laser

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Nano research 2022年第5期15卷 4490-4499页

作者： Tingting Zou Bo Zhao Wei Xin Feiyue Wang Hongbo Xie Yuhang Li Yuwei Shan kun Li Yanbing Sun Jianjun Yang The GPL Photonics Laboratory State Key Laboratory of Applied OpticsChangchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China key Laboratory of UV-Emitting Materials and Technology Ministry of EducationNortheast Normal UniversityChangchun 130024China Department of Electronic Information and Physics Changzhi UniversityChangzhi 046011China changchun New Industries Optoelectronics Technology co. LtdChangchun 130103China

In-plane birefringent materials present an effective modulation of the optical properties and more degrees of freedom for the signal detection in low dimension,and thus remain a hot topic in realizing the integrated,miniature,and flexible devices for multiple ***,the artificial in-plane birefringence properties have been successfully achieved on a graphene oxide film by a novel femtosecond laser lithography method,which provides a high-speed,large-area,and regular subwavelength gratings(~380 nm)fabrication and *** obtained sample manifests an evident optical birefringence(~0.18)and anisotropic photoresponse(~1.21)in the visible range,both of which can be significantly modulated by either the structural morphology or the degree of oxide *** on the analysis of effective-medium theory and measurements of angle-resolved polarized Raman spectroscopy,the artificial in-plane birefringence is originated from various optical responses of the periodic subwavelength structures for the incident light with different polarization *** technique shows great advantages for the fabrication of integrated in-plane polarization-dependent devices,which is expected to solve the problems in this field,such as the deficient selection of materials,complex design of micro/nanostructure,and inflexible processing technology.

关键词： femtosecond laser lithography reduced graphene oxide subwavelength structures in-plane birefringence anisotropic photoresponse

Sigma-Meson from General color Symmetry Model for Quantum chromodynamics

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chinese Physics Letters 1997年第8期14卷 573-576页

作者： LÜXiao-fu LIU Yu-xin ZOU Bing-song DING Hui-ming ZHAO En-gang Department of Physics Sichuan UniversityChengdu 610064 Department of Physics Peking UniversityBeijing 100871 Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100080 Department of Physics Jilin UniversityChangchun 130023 Queen Mary and Westfield college London El 4NSU.K.

The property of σ-meson or f0(400-1200)is studied in the general color symmetry model(GcM)for quantum *** recent determined values of mσ,fσand fπin GcM,the isoscalarππS-wave amplitude is calculated without any free *** T-matrix pole for f0(400-1200)is found to be 1011-i 284MeV,which is very close to the Particle Data Group value(400-1200)-i(300-500)MeV.

关键词： parameter. symmetry meson

Progress in research and application of water mist fire suppression technology

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chinese Science Bulletin 2003年第8期48卷 718-725页

作者： LIU Jianghong, LIAO Guangxuan, LI Peide, FAN Weicheng & LU Qiang State key Laboratory of fire Science, University of Science and Tech-nology of china, Hefei 230026, china correspondence should be addressed to Liu Jianghong (e-mail: ljh@ ***) State key Laboratory of Fire Science University of Science and Technology of China Hefei 230026 China

Water mist technology in fire suppression has been a subject of many investigations over the last decade. This paper introduces the concept of water mist technology and discusses its extinguishment mechanisms in comparison with other fire suppression systems briefly. A survey is made on the recent applications of water mist for (1) class B spray and pool fires in machinery spaces, gas turbine enclosures, combat vehicles, and flammable liquid storage rooms; (2) class A fires in residential occupancies, marine accommoda-tions and public spaces, heritage buildings and libraries; (3) class c fires in electronic equipment and computer rooms; and (4) the fires in aircraft onboard cabin and cargo com-partments. The paper proceeds to review some new applica-tions of water mist for the class k fires in commercial cook rooms. Use of water mist for total-ship protection as well as the fire protection of heavy goods vehicle shuttle trains is also investigated. At last, the up-to-date development of corresponding test to evaluate the capabilities and limitaions of water mist is discussed.

关键词：水雾灭火技术灭火机制比较分析效果评价