Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1126/science.aat5522 |
Experimental observation of high thermal conductivity in boron arsenide | |
Kang, Joon Sang; Li, Man; Wu, Huan; Nguyen, Huuduy; Hu, Yongjie | |
2018-08-10 | |
发表期刊 | SCIENCE
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ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2018 |
卷号 | 361期号:6402页码:575-578 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Improving the thermal management of small-scale devices requires developing materials with high thermal conductivities. The semiconductor boron arsenide (BAs) is an attractive target because of ab initio calculation indicating that single crystals have an ultrahigh thermal conductivity. We synthesized BAs single crystals without detectable defects and measured a room-temperature thermal conductivity of 1300 watts per meter-kelvin. Our spectroscopy study, in conjunction with atomistic theory, reveals that the distinctive band structure of BAs allows for very long phonon mean free paths and strong high-order anharmonicity through the four-phonon process. The single-crystal BAs has better thermal conductivity than other metals and semiconductors. Our study establishes BAs as a benchmark material for thermal management applications and exemplifies the power of combining experiments and ab initio theory in new materials discovery. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000441202700030 |
WOS关键词 | CRYSTALS ; DIAMOND ; SCATTERING ; HEAT ; BAS ; BP |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
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/199331 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | Univ Calif Los Angeles, Sch Engn & Appl Sci, Los Angeles, CA 90095 USA |
推荐引用方式 GB/T 7714 | Kang, Joon Sang,Li, Man,Wu, Huan,et al. Experimental observation of high thermal conductivity in boron arsenide[J]. SCIENCE,2018,361(6402):575-578. |
APA | Kang, Joon Sang,Li, Man,Wu, Huan,Nguyen, Huuduy,&Hu, Yongjie.(2018).Experimental observation of high thermal conductivity in boron arsenide.SCIENCE,361(6402),575-578. |
MLA | Kang, Joon Sang,et al."Experimental observation of high thermal conductivity in boron arsenide".SCIENCE 361.6402(2018):575-578. |
条目包含的文件 | 条目无相关文件。 |
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