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arXiv 1601.02072cond-mat.mes-hallcond-mat.mtrl-sci
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氢化石墨烯纳米层的几何结构、稳定性和热输运

Geometry, stability and thermal transport of hydrogenated graphene nanoquilts

Zhongwei Zhang, Yuee Xie, Qing Peng, Yuanping Chen

摘要:

利用分子动力学模拟研究了氢化折叠的石墨烯纳米绗缝的几何形状、稳定性和热输运。氢化的石墨烯纳米绗缝显示出增加的热力学稳定性和比没有氢化的折叠石墨烯结构更好的传输性能。对于双层石墨烯纳米被子,几何形状和热导率都对吸附的氢链非常敏感,这可以通过PDOS的红移来解释。对于多折叠纳米绗缝,通过改变周期数或长度,它们的热导率可以从原始石墨烯的100%调整到15%。我们的研究结果表明,氢化石墨烯纳米绗缝是非常适合的热管理设备。

英文摘要:

Geometry, stability, and thermal transport of graphene nanoquilts folded by hydrogenation are studied using molecular dynamics simulations. The hydrogenated graphene nanoquilts show increased thermodynamic stability and better transport properties than folded graphene structures without hydrogenation. For the two-fold graphene nanoquilt, both geometry and thermal conductivity are very sensitive to the adsorbed hydrogen chains, which is interpreted by the red-shift of PDOS. For the multi-fold nanoquilts, their thermal conductivities can be tuned from 100% to 15% of pristine graphene, by varying the periodic number or length. Our results demonstrated that the hydrogenated graphene nanoquilts are quite suitable to be thermal management devices.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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