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| 1 | A Humidity-Powered Soft Robot with Fast Rolling Locomotion显示文摘A range of soft robotic systems have recently been developed that use soft,flexible materials and respond to environmental stimulus.The greatest challenge in their design is the integration of the actuator,energy sources,and body of robots while achieving fast locomotion and well-defined programmable trajectories.This work presents such a design that operates under constant conditions without the need for an externally modulated stimulus.By using a humidity-sensitive agarose film and overcoming the isotropic and random bending of the film,the robot,which we call the Hydrollbot,harnesses energy from evaporation for spontaneous and continuous fast self-rolling locomotion with a programmable trajectory in a constant-humidity environment.Moreover,the geometric parameters of the film were fine-tuned to maximize the rolling speed,and the optimised hydrollbot is capable of carrying a payload up to 100%of its own weight.The ability to self-propel fast under constant conditions with programmable trajectories will confer practical advantages to this robot in the applications for sensors,medical robots,actuation,etc. | Lei Fu Weiqiang Zhao Jiayao Ma Mingyuan Yang Xinmeng Liu Lei Zhang Yan Chen | 2022 | Research2022，，4： | 3 |
| 2 | The influence of pore size distribution on thermal conductivity,permeability, and phase change behavior of hierarchical porous materials显示文摘Porous foams have been widely employed to improve heat storage rate and prevent leakage of phase change materials(PCMs).Actual porous foams have non-uniform or hierarchical pore size distribution, which is usually neglected in most researches.Here, we establish hierarchical porous models considering different pore size distributions by using Voronoi tessellations. Effects of pore size distribution on thermal conductivity, permeability, and phase change behavior of hierarchical porous foams/PCMs composites are investigated. Uneven pore size distributions are found to decrease the thermal conductivity of porous foams to some extent. On the other hand, the permeability can be reduced by 27.6%, and the heat storage rate can be improved by 7.7% by introducing moderate hierarchy without changing the total porosity. This work opens a new route to enhance heat storage performance of PCMs via leveraging hierarchy of pore size distribution of porous foams. | LIU XiangLei SONG FangZhou XU Qiao LUO QingYang TIAN Yang LI JiaWei YANG XinMeng JIN Yi | 2021 | Science China(Technological Sciences)2021，64，11： | 3 |
| 3 | Passivating buried interface with multifunctional novel ionic liquid containing simultaneously fluorinated anion and cation yielding stable perovskite solar cells over 23% efficiency显示文摘Interfacial defects and energy barrier would result in serious interfacial non-radiative recombination losses.In addition,the quality of perovskite films is highly dependent on deposition substrates.Consequently,there is an urgent desire to develop multifunctional interface modulators to manage the interface between electron transport layer and perovskite layer.Here,we report a multifunctional buried interface modulation strategy that 4-fluoro-phenylammonium tetrafluoroborate (FBABF_(4)) consisting of simultaneously fluorinated anion and cation is inserted between SnO_(2)layer and perovskite layer.It is uncovered by time-of-flight secondary ion mass spectroscopy that the anion and cation in modifier are mainly located at this interface,which is put down to coordination bond of the fluorine atom on BF_(4)^(-) with SnO_(2),and the hydrogen bond of the fluorine atom on FBA^(+) with formamidinium.This suggests that simultaneous fluorination of anion and cation in the ionic liquid molecule is of crucial importance to ameliorate interfacial contact through chemical linker.The interface modification approach enables the realization of interfacial defect passivation,interfacial energy band alignment modulation,and perovskite crystallization manipulation,which are translated into enhanced efficiency and stability as well as significantly suppressed hysteresis.The multiple functions of FBABF_(4) endow the modified solar cells excellent photovoltaic performance with an efficiency exceeding 23%along with appealing long-term stability.This work highlights the critical role of fluorination strategy in engineering multifunctional organic salt modulators for improving interfacial contact. | Deyu Gao Liqun Yang Xiaohui Ma Xueni Shang Chen Wang Mengjia Li Xinmeng Zhuang Boxue Zhang Hongwei Song Jiangzhao Chen Cong Chen | 2022 | Journal of Energy Chemistry2022，31，6： | 2 |
| 4 | Clinical Implications of BMI-1 in Cancer Stem Cells of Laryngeal Carcinoma显示文摘 | Dan Yu Yan Liu Jingpu Yang Chunshun Jin Xue Zhao Jinzhang Cheng Xueshibojie Liu Xinmeng Qi | 2015 | Cell Biochemistry and Biophysics2015，，1： | 1 |
| 5 | Globular adiponectin ameliorates insulin resistance in skeletal muscle by enhancing the LKB1-mediated AMPK activation via SESN2显示文摘Adiponectin has been demonstrated to be a mediator of insulin sensitivity;however,the underlined mechanisms remain unclear.SESN2 is a stress-inducible protein that phosphorylates AMPK in different tissues.In this study,we aimed to validate the amelioration of insulin resistance by globular adiponectin(gAd)and to reveal the role of SESN2 in the improvement of glucose metabolism by gAd.We used a high-fat diet-induced wild-type and SESN2/C57BL/6J insulin resistance mice model to study the effects of six-week aerobic exercise or gAd administration on insulin resistance.In vitro study,C2C12 myotubes were used to determine the potential mechanism by overexpressing or inhibiting SESN2.Similar to exercise,six-week gAd administration decreased fasting glucose,triglyceride and insulin levels,reduced lipid deposition in skeletal muscle and reversed whole-body insulin resistance in mice fed on a high-fat diet.Moreover,gAd enhanced skeletal muscle glucose uptake by activating insulin signaling.However,these effects were diminished in SESN2/mice.We found that gAd administration increased the expression of SESN2 and Liver kinase B1(LKB1)and increased AMPK-T172 phosphorylation in skeletal muscle of wild-type mice,while in SESN2/mice,LKB1 expression was also increased but the pAMPKT172 was unchanged.At the cellular level,gAd increased cellular SESN2 and pAMPK-T172 expression.Immunoprecipitation experiment suggested that SESN2 promoted the formation of complexes of AMPK and LKB1 and hence phosphorylated AMPK.In conclusion,our results revealed that SESN2 played a critical role in gAd-induced AMPK phosphorylation,activation of insulin signaling and skeletal muscle insulin sensitization in mice with insulin resistance. | Xinmeng Liu Yang Yang Heng Shao Sujuan Liu Yanmei Niu Li Fu | 2023 | Sports Medicine and Health Science2023，5，1： | 0 |
| 6 | Enhanced figure of merit for famatinite Cu_(3)SbSe_(4)via band structure tuning and hierarchical architecture显示文摘The p-type Te-free Cu_(3)SbSe_(4)with famatinite structure is a potential candidate for thermoelectric materials due to the low cost and eco-friendly constituent elements.However,its strong bipolar effect and high lattice thermal conductivity(klat)are the main challenges for its performance enhancement.Herein,we report a new strategy to enhance its figure of merit zT~0.86 at 673 K for Cu_(3)Sb_(0.95)Fe_(0.05)Se_(2.8)S_(1.2)via band structure tuning and hierarchical architecture.Firstly,S substituted Se atoms in lattice can widen the band gap to alleviate the bipolar effect.Secondly,Fe doping in Sb site significantly increases the density of states,thus increasing the carrier effective mass,and obtaining a remarkably high Seebeck coefficient of~560 mV/K at 300 K.Moreover,the induced hierarchical architecture defects resulting in a minimum klat of~0.48 W·m^(-1)·K^(-1)at 673 K.Consequently,the improved Seebeck coefficient combined with low thermal conductivity leads to an enhanced zT. | Lijun Zhao Haolin Ye Xinmeng Wu Jian Yang Lihua Yu Zhongqi Shi Shahid Hussain Guanjun Qiao Junhua Xu Bangzhi Ge Li Wang Chongjian Zhou | 2023 | Journal of Materiomics2023，9，6： | 0 |
| 7 | Annual Report of RF Surface Technology Research Group显示文摘RF Surface Technology Research Group was founded in August 2019.It was evolved from the former Supercon-ducting Radio Frequency(SRF)research group of Linac center.The primary research topics will be presented in this report. | Tan Teng Yang Ziqin You Zhiming Chu Qingwei Huang Shichun Xiong Pingran Guo Hao Song Yukun Wu Andong Li Lu Pan Feng Liu Xinmeng Lu Ming | 2019 | IMP & HIRFL Annual Report2019，，1： | 0 |
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