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DOI | 10.1038/s41467-019-09113-0 |
Heat guiding and focusing using ballistic phonon transport in phononic nanostructures | |
Anufriev, Roman1; Ramiere, Aymeric1,2; Maire, Jeremie1; Nomura, Masahiro1,3 | |
2019-03-22 | |
发表期刊 | NATURE COMMUNICATIONS
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ISSN | 2041-1723 |
出版年 | 2017 |
卷号 | 8 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan |
英文摘要 | Unlike classical heat diffusion at macroscale, nanoscale heat conduction can occur without energy dissipation because phonons can ballistically travel in straight lines for hundreds of nanometres. Nevertheless, despite recent experimental evidence of such ballistic phonon transport, control over its directionality, and thus its practical use, remains a challenge, as the directions of individual phonons are chaotic. Here, we show a method to control the directionality of ballistic phonon transport using silicon membranes with arrays of holes. First, we demonstrate that the arrays of holes form fluxes of phonons oriented in the same direction. Next, we use these nanostructures as directional sources of ballistic phonons and couple the emitted phonons into nanowires. Finally, we introduce thermal lens nanostructures, in which the emitted phonons converge at the focal point, thus focusing heat into a spot of a few hundred nanometres. These results motivate the concept of ray-like heat manipulations at the nanoscale. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000401512500001 |
WOS关键词 | DEPENDENT THERMAL-CONDUCTIVITY ; SURFACE SCATTERING ; TEMPERATURE ; FLOW ; SI |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/204282 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Tokyo, Inst Ind Sci, Tokyo 1538505, Japan; 2.Univ Tokyo, CNRS, Inst Ind Sci,Natl Ctr Sci Res, Lab Integrated Micro Mechatron Syst,LIMMS,IIS, Tokyo 1538505, Japan; 3.Japan Sci & Technol Agcy, PRESTO, Saitama 3320012, Japan |
推荐引用方式 GB/T 7714 | Anufriev, Roman,Ramiere, Aymeric,Maire, Jeremie,et al. Heat guiding and focusing using ballistic phonon transport in phononic nanostructures[J]. NATURE COMMUNICATIONS,2019,8. |
APA | Anufriev, Roman,Ramiere, Aymeric,Maire, Jeremie,&Nomura, Masahiro.(2019).Heat guiding and focusing using ballistic phonon transport in phononic nanostructures.NATURE COMMUNICATIONS,8. |
MLA | Anufriev, Roman,et al."Heat guiding and focusing using ballistic phonon transport in phononic nanostructures".NATURE COMMUNICATIONS 8(2019). |
条目包含的文件 | 条目无相关文件。 |
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