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cell vibron polariton resonantly self-confined in the myelin sheath of nerve

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Nano Research 2020年第1期13卷 38-44页

作者： Bo Song Yousheng Shu School of Optical-Electrical Computer Engineering University of Shanghai for Science and TechnologyShanghai200093China State Key Laboratory of Medical Neurobiology Institute for Translational Brain ResearchMOE Frontiers Center for Brain ScienceDepartment of NeurologyHuashan HospitalFudan UniversityShanghai200032China

Polaritons are arousing tremendous interests in physics and material sciences for their unique and amazing properties,especially including the condensation,lasing without inversion and even room-temperature ***,we propose a cell vibron polariton(cell-VP):a collectively coherent mode of a photon and all phospholipid molecules in a myelin sheath formed by glial ***-VP can be resonantly self-confined in the myelin sheath under physiological *** observations benefit from the specifically compact,ordered and polar thin-film structure of the sheath,and the relatively strong coupling of the mid-infrared photon with the vibrons of phospholipid tails in the *** underlying physics is revealed to be the collectively coherent superposition of the photon and vibrons,the polariton induced significant enhancement of myelin permittivity,and the resonance of the polariton with the *** captured cell-VPs in myelin sheaths may provide a promising way for super-efficient consumption of extra-weak bioenergy and even directly serve for quantum *** findings further the understanding of nervous system operations at cellular level from the view of quantum mechanics.

关键词： cell polariton nerves myelin sheath quantum state

cell Membrane Coating Technology:A Promising Strategy for Biomedical Applications

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Nano-Micro Letters 2019年第4期11卷 720-765页

作者： Yao Liu Jingshan Luo Xiaojia Chen Wei Liu Tongkai Chen Science and Technology Innovation Center Guangzhou University of Chinese MedicineGuangzhou 510405People’s Republic of China Institute of Clinical Pharmacology Guangzhou University of Chinese MedicineGuangzhou 510405People’s Republic of China State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical SciencesUniversity of MacaoMacaoPeople’s Republic of China Key Laboratory of Artificial Micro-and Nano-Structures of Ministry of Education School of Physics and TechnologyWuhan UniversityWuhan 430072People’s Republic of China

cell membrane coating technology is an approach to the biomimetic replication of cell membrane properties,and is an active area of ongoing research readily applicable to nanoscale ***(NPs)coated with cell membranes offer an opportunity to unite natural cell membrane properties with those of the artificial inner core *** coated NPs not only increase their biocompatibility but also achieve effective and extended circulation in vivo,allowing for the execution of targeted *** cell membrane-coated NPs offer clear advantages,much work remains before they can be applied in clinical *** this review,we first provide a comprehensive overview of the theory of cell membrane coating technology,followed by a summary of the existing preparation and characterization ***,we focus on the functions and applications of various cell membrane *** addition,we collate model drugs used in cell membrane coating technology,and review the patent applications related to this technology from the past 10 ***,we survey future challenges and trends pertaining to this technology in an effort to provide a comprehensive overview of the future development of cell membrane coating technology.

关键词： cell membrane Biomimetic nanoparticles Cancer therapy Immune modulation Detoxification

cell behaviors on surface of pure tantalum with nano-dimpled structure

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Rare Metals 2019年第6期38卷 543-551页

作者： Jun-Wei Ma Rui Zan Wen-Zhi Chen Jia-Hua Ni Xiao-Nong Zhang State Key Laboratory of Metal Matrix Composites School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China California Nanosystems Institute University of CaliforniaLos AngelesCaliforniaCA 90095USA

Tantalum exhibits excellent biocompatibility and good chemical stability, which has been employed in dental and orthopedic *** local microenvironment of the surface of implants influence determines the surrounding cell *** this work, nano-dimpled structure on the surface of pure tantalum was fabricated by electrochemical *** surface morphology of the nano-dimpled structure was observed, and the dimensions of the nano-dimpled structure were measured by scanning electron microscopy(SEM).The surface roughness of the sample with nano-dimpled structure was measured by atomic force microscopy(AFM).The results show that the diameter of nano-dimpled ranges from 40 to 180 nm, and the higher the applied voltage, the larger the ***, nano-dimpled structure has good *** vitro results show that nano-dimpled structure can promote the adhesion and proliferation of mouse cranial anterior bone(MC-3T3-E1) *** filopodia of MC-3T3-E1 cells can be fully extended on this nano-dimpled *** the surface of the nano-dimpled structure with a dimple size of 40 nm, the cells have the longest aspect *** small dimple size of the nanodimpled structure is beneficial to cell proliferation and osteogenic differentiation.

关键词： Tantalum Nano-dimpled structure cell behaviors Anodization

Intrinsic fluctuation and susceptibility in somatic cell reprogramming process

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Chinese Physics B 2019年第4期28卷 113-120页

作者： Jian Shen Xiaomin Zhang Qiliang Li Xinyu Wang Yunjie Zhao Ya Jia Department of Physics Central China Normal University School of Information Engineering Wuhan Technology and Business University

Based on the coherent feedforward transcription regulation loops in somatic cell reprogramming process, a stochastic kinetic model is proposed to study the intrinsic fluctuations in the somatic cell reprogramming. The Fano factor formulas of key genes expression level in the coherent feedforward transcription regulation loops are derived by using of Langevin theory. It is found that the internal fluctuations of gene expression levels mainly depend on itself activation ratio and degradation ratio. When the self-activation ratio(or self-degradation ratio) is increased, the Fano factor increases reaches a maximum and then decreases. The susceptibility is used to measure the sensitivity of steady-state response to the variation in systemic parameters. It is found that with the increase of the self-activation ratio(or self-degradation ratio), the susceptibility of steady-state increases at first, it reaches a maximum, and it then decreases. The magnitude of the maximum is increased with the increase of activated ratio by the upstream transcription factor.

关键词： intrinsic fluctuation susceptibility coherent feedforward loops somatic cell reprogramming

Lab-in-cell based on spontaneous amino-yne click polymerization

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Science China Chemistry 2019年第9期62卷 1198-1203页

作者： Rong Hu Xu Chen Taotao Zhou Han Si Benzhao He Ryan T. K. Kwok Anjun Qin Ben Zhong Tang State Key Laboratory of Luminescent Materials and Devices Center for Aggregation-Induced Emission South China University of Technology Guangzhou 510640 China Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration and Reconstruction Institute for Advanced Study Department of Chemical and Biological Engineering The Hong Kong University of Science & Technology Hong Kong China

Unnatural reaction in the living cells is a powerful tool for biological research. However, the polymerization inside cells is rarely reported. In this work, a lab-in-cell is illustrated based on our developed spontaneous amino-yne click polymerization. Carbonyl group activated terminal diyne can spontaneously polymerize with tetraphenylethene(TPE)-containing primary diamine inside cells, and polymer with weight-average molecular weight of 7,300 was yielded. By utilizing this in vivo amino-yne click polymerization and taking advantage of the aggregation-induced emission feature of TPE, a "turn-on" cell imaging was realized,and in-situ killing of cells was also acquired by destroying the structures of actin and tubulin, which cannot be realized by preprepared polymer. This strategy provides a useful platform and holds great promise in biochemistry and therapy applications.

关键词： lab in cell intracellular polymerization aggregation-induced emission cell imaging

Well-aligned Ni Pt alloy counter electrodes for high-efficiency dye-sensitized solar cell applications

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Journal of Energy Chemistry 2019年第3期28卷 49-56页

作者： Zhibin Pang Yuanyuan Zhao Yanyan Duan Jialong Duan Qunwei Tang Liangmin Yu School of Materials Science and Engineering Ocean University of China Key Laboratory of Marine Chemistry Theory and Technology Ministry of Education Ocean University of China

Development of cost-effective and robust counter electrodes(CEs) is a persistent objective for highefficiency dye-sensitized solar cells(DSSCs). To achieve this goal, we present here the hydrothermal synthesis of well-aligned Ni Pt alloy CEs, which is templated by ZnO nanowires and nanosheets. The preliminary results demonstrate that Ni Pt alloy electrodes are featured by increased charge-transfer processes and electrocatalytic activity in comparison with expensive Pt CE, yielding power conversion efficiencies of 8.29% and 7.41% in corresponding DSSCs with Ni Pt nanowire and nanosheet alloy CEs, respectively. Additionally, the Ni Pt alloy CEs also display extraordinary dissolution-resistant ability when suffering longterm utilization in liquid-junction DSSCs.

关键词： Dye-sensitized solar cell Counter electrode Alloy electrocatalyst

Lithium-ion full cell with high energy density using nickel-rich LiNi_(0.8)Co_(0.1)Mn_(0.1)O_2 cathode and SiO-C composite anode

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International Journal of Minerals,Metallurgy and Materials 2018年第12期25卷 1473-1481页

作者： Azhar Iqbal Long Chen Yong Chen Yu-xian Gao Fang Chen Dao-cong Li Institute of Engineering Research Hefei Guoxuan High-Tech Power Energy CO. Ltd

A high-energy-density Li-ion battery with excellent rate capability and long cycle life was fabricated with a Ni-rich layered LiNi_(0.8)Co_(0.1)Mn_(0.1)O_2 cathode and Si O-C composite anode. The LiNi_(0.8)Co_(0.1)Mn_(0.1)O_2 and Si O-C exhibited excellent electrochemical performance in both half and full cells. Specifically, when integrated into a full cell configuration, a high energy density(280 Wh·kg^(-1)) with excellent rate capability and long cycle life was attained. At 0.5 C, the full cell retained 80% of its initial capacity after 200 charge/discharge cycles, and 60% after 600 cycles, indicating robust structural tolerance for the repeated insertion/extraction of Li^+ ions. The rate performance showed that, at high rate of 1 C and 2 C, 96.8% and 93% of the initial capacity were retained, respectively. The results demonstrate strong potential for the development of high energy density Li-ion batteries for practical applications.

关键词： high energy density full cell rate performance high capacity cathode

Infiltration of Ce0.8Gd0.2O1.9 nanoparticles on Sr2Fe1.5Mo0.5O6-δ cathode for CO2 electroreduction in solid oxide electrolysis cell

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Journal of Energy Chemistry 2019年第8期28卷 71-78,I0004页

作者： Houfu Lv Yingjie Zhou Xiaomin Zhang Yuefeng Song Qingxue Liu Guoxiong Wang Xinhe Bao State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of SciencesDalian 116023 Liaoning China University of Chinese Academy of Sciences Beijing 100039 China

Solid oxide electrolysis cell(SOEC) can electrochemically convert CO2 to CO at the gas-solid interface with a high current density and Faradaic efficiency, which has attracted increasing attentions in recent *** efficient catalyst for electrochemical CO2 reduction reaction(CO2 RR) at the cathode is a grand challenge for the research and development of SOEC. Sr2Fe1.5Mo0.5O6-δ(SFM) is one kind of promising cathode materials for SOEC, but suffers from insufficient activity for CO2 RR. Herein, Gd0.2Ce0.8O1.9(GDC)nanoparticles were infiltrated onto the SFM surface to construct a composite GDC-SFM cathode and improve the CO2 RR performance in SOEC. The current density over the GDC infiltrated SFM cathode with a GDC loading of 12.8 wt% reaches 0.446 A cm-2 at 1.6 V and 800 °C, which is much higher than that over the SFM cathode(0.283 A cm-2). Temperature-programmed desorption of CO2 measurements suggest that the infiltration of GDC nanoparticles significantly increases the density of surface active sites and three phase boundaries(TPBs), which are beneficial for CO2 adsorption and subsequent conversion. Electrochemical impedance spectroscopy results indicate that the polarization resistance of 12.8 wt% GDCSFM cathode was obviously decreased from 0.46 to 0.30 cm^2 after the infiltration of GDC nanoparticles.

关键词： Electrochemical carbon dioxide reduction reaction Solid oxide electrolysis cell Double perovskite Infiltration

Reversible and irreversible heat generation of NCA/Si–C pouch cell during electrochemical energy-storage process

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Journal of Energy Chemistry 2019年第2期28卷 95-102页

作者： Ying Bai Limin Li Yu Li Guanghai Chen Huichun Zhao Zhaohua Wang Chuan Wu Hongyun Ma Xinquan Wang Hongyue Cui Jiang Zhou School of Materials Science and Engineering Beijing Institute of Technology Collaborative Innovation Center of Electric Vehicles in Beijing Lishen Research Institute Tianjin Lishen Battery Joint-stock Co.Ltd.

To meet the requirements of electronic vehicles(EVs) and hybrid electric vehicles(HEVs),the high energy density Li Ni_(0.8) Co_(0.15) Al_(0.05) O_2(NCA) cathode and Si–C anode have attracted more *** we report the thermal behaviors of NCA/Si–C pouch cell during the charge/discharge processes at different current *** total heat generations are derived from the surface temperature change during electrochemical Li+insertion/extraction in adiabatic *** reversible heat is determined by the entropic coefficients,which are related with open-circuit voltage at different temperatures; while the irreversible heat is determined by the internal resistance,which can be obtained via V–I characteristic,electrochemical impedance spectroscopy and hybrid pulse power characterization(HPPC).During the electrochemical process,the reversible heat contributes less than 10% to total heat generation; and the heat generated in charge process is less than that in discharge *** results of thermal behaviors analyses are conducive to understanding the safety management and paving the way for building a reliable thermal model of high energy density lithium ion battery.

关键词： Heat generation Internal resistance Reversible heat Irreversible heat Pouch cell