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| 1 | Manipulation of polymer foam structure based on CO_2-induced changes in polymer fundamental properties显示文摘Foaming of polymers with CO2 has attracted increasing attention in polymer processing studies.Some of the fundamental properties of polymer/CO2 systems is discussed in this short review,including solubility and diffusivity of CO2 in the polymer,polymer crystallization,interfacial tension between the polymer and the gas,and rheology of the CO2/polymers melt.These properties understandably affect the foaming process,and the structures of the foam products.Meanwhile,these properties can be changed via manipulation of CO2 in polymer.The proposed idea is to manipulate the foaming process and the foam structure by CO2-induced changes in these properties.Two cases from the authors'laboratory are presented for elucidating how to use the changes to manipulate the foaming process. | Tao Liu Dachao Li Ling Zhao Weikang Yuan | 2010 | Particuology2010，8，6： | 1 |
| 2 | Hybrid structure of iron single atoms and metallic titanium for photothermal ethanol steam reforming显示文摘Photothermal ethanol steam reforming(ESR) is currently limited by low intrinsic activity and strong solar energy dissipation.Herein,we synthesized Fe single atoms supported on CeO_(2)(SA Fe-CeO_(2)) to exhibit excellent low-temperature ESR activity with a hydrogen production rate of 512 mmol g^(-1)h^(-1) at 350℃,becuase of the high oxidation state of Fe single atoms to weaken the reaction barrier of ethanol decomposition.Furthermore,a heterostructure of SA Fe-CeO_(2) and Ti foil could eliminate 66% of infrared radiation via the size effect,thus achieving a 3.5 sun-driven temperature of 347℃.Consequently,the heterostructure of SA Fe-CeO_(2) and Ti foil shows a hydrogen generation rate of 984 mmol g^(-1)h^(-1) of ESR and 11.31% of solar-to-hydrogen energy conversion efficiency,which outperforms other photothermal ethanol-hydrogen production systems.This study provides a new path for designing active catalytic sites and trapping light energy of photothermal catalysts. | Dachao Yuan Guanda Han Zhixuan Wang Jianguo Zhao Kailuan Li Pengfei Wang Jianjun Hao Yaguang Li Jinhua Ye | 2024 | Science China Chemistry2024，67，3： | 0 |
| 3 | Transparent conducting properties of c-axis-oriented NaxCoO2 epitaxial thin films显示文摘Transparent conducting oxides(TCOs)have attracted intensive attention because of their broad application in photoelectric devices such as solar cells,light-emitting diodes,and flat-panel displays.Current TCOs used in industry,including tin(IV)oxide(SnO_2),indium oxide(In_2O_3),indium tin oxide(ITO),and zinc oxide(ZnO),are primarily n-type semiconductors[1-3].Suitable p-type TCOs are still | DaChao Yuan JiangLong Wang Nian FU XiaoLin Wu YueJin Ma ShuFang Wang | 2018 | Science China(Physics,Mechanics & Astronomy)2018，61，10： | 0 |
| 4 | MEMS Torsion-Mirror Actuators for Optical Switching or Attenuating Applications显示文摘Novel MEMS torsion-mirror actuators with monolithically integrated fiber self-holding structures are fabricated, and investigated experimentally and theoretically. Their electromechanical and optical characteristics are acceptable for optical switching or attenuating applications. | Wengang Wu, Dachao Li, Yong Yuan, Guizhen Yan, Yilong Hao, Shijiu Jin institute of Microelectronics, Peking University, Beijing 100871, China, Tel: 86-10-62757163, Fax: 86-10-62751789,E-mail: wuwg@ime.pku.edu.cn State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China | 2003 | 光学学报2003，23，S1： | 0 |
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