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Recent advances in nacre-inspired anisotropic thermally conductive polymeric nanocomposites

Nano Research 2023年第1期16卷 1362-1386页

作者： Qiang Chen Zhewen Ma Mingchao Wang Zhengzhou Wang Jiabing Feng Venkata Chevali Pingan Song Department of Polymer Materials School of Materials Science and EngineeringTongji UniversityShanghai 201804China Key Laboratory of Advanced Civil Engineering Materials(Tongji University) Ministry of EducationShanghai 201804China Centre for Theoretical and Computational Molecular Science Australian Institute for Bioengineering and NanotechnologyThe University of QueenslandSt LuciaQLD 4072Australia Centre for Future Materials University of Southern QueenslandSpringfield 4300Australia

The rapid development of miniaturized,highly integrated,and multifunctional modern electronic devices has generated a growing demand for anisotropic heat dissipation in polymer nanocomposites for thermal management applications.These anisotropic thermally conductive multifunctional polymer nanocomposites use bio-inspired structural design based on natural nacre,which is the gold standard for biomimetics.However,to date,a comprehensive review and critique on the highly-anisotropic thermal conduction of nacre-mimetic nanocomposites is nonexistent.As such,this extensive review of the nacre-inspired highly anisotropic thermal management nanocomposites summarizes the current design strategies,and explains the thermal conduction mechanisms,and factors affecting anisotropic thermal conductivity.Furthermore,the practical applications of the asprepared nacre-inspired highly anisotropic nanocomposites are highlighted.Finally,the key challenges and potential solution strategies associated with these nacre-inspired highly anisotropic nanocomposites are discussed and outlooks for future research opportunities are also proposed.

关键词： nacre-inspired structure high anisotropy thermal conductivity nanocomposites

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Structural and transport properties of Sr_2VO_(3-δ)FeAs superconductors with different oxygen deficiencies

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Science China(Physics,Mechanics & Astronomy) 2010年第7期53卷 1202-1206页

作者： HAN Fei ZHU XiYu MU Gang CHENG Peng SHEN Bing ZENG Bin WEN HaiHu National Laboratory for Superconductivity Institute of Physics and Beijing National Laboratory for Condensed Matter PhysicsChinese Academy of SciencesBeijing 100190China

Sr2VO3-δFeAs superconductors with different oxygen deficiencies have been successfully fabricated.It is found that the superconducting transition temperature drops down monotonically with the increase of nominal oxygen deficiency.The diminishing of superconductivity is accompanied by the enhancement of residual resistivity,indicating an anomalous scattering effect induced by the oxygen deficiency.The highest superconducting transition temperature at about 36 K is achieved near the stoichiometrical sample Sr2VO2.9FeAs.The Hall effect measurements reveal that the density of charge carriers(electron-like here) varies qualitatively with the increase of nominal oxygen deficiency.Magnetotransport measurements show that the superconducting transition changes from one-step-like shape at low fields to two-step-like one at high fields,indicating an enhanced vortex motion due to the high anisotropy.

关键词： iron-based superconductor oxygen deficiency transport properties high anisotropy

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high Coercive L10 FePt:C （001） Thin Films With Small Grain Size for Ultrahigh Density Magnetic Recording Media

High Coercive L10 FePt:C （001） Thin Films With Small Grain...

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第18届国际真空大会

作者： G.M.Chow Department of Materials Science ＆ Engineering National University of Singapore

FePt is considered as the most potential recording media supporting the areal density beyond 1 Tbits/in2. Simultaneous control of the phase transformation temperature, texture, and grain size of L10 FePt films is still the key problem for the practical application for perpendicular recording media. In this work, we present the microstructure and magnetic properties of L10 FePt :C （001） oriented films grown on CrRu（200） underlayer with Pt and MgO intermediate layer at temperature of 350oC by doping C element into the FePt films.Key works: high anisotropy, FePt, magnetic recording media, Microstructure

关键词： high anisotropy FePt magnetic recording media Microstructure

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