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DOI | 10.1038/s41467-019-10288-9 |
Thermal conductivity and air-mediated losses in periodic porous silicon membranes at high temperatures | |
Graczykowski, B.1,2,3,4; El Sachat, A.1,2,5; Reparaz, J. S.1,2,9; Sledzinska, M.1,2; Wagner, M. R.1,2,10; Chavez-Angel, E.1,2; Wu, Y.6; Volz, S.6,7; Wu, Y.6; Alzina, F.1,2; Sotomayor Torres, C. M.1,2,8 | |
2019-05-28 | |
发表期刊 | NATURE COMMUNICATIONS |
ISSN | 2041-1723 |
出版年 | 2017 |
卷号 | 8 |
文章类型 | Article |
语种 | 英语 |
国家 | Spain; Poland; Germany; France; Japan |
英文摘要 | Heat conduction in silicon can be effectively engineered by means of sub-micrometre porous thin free-standing membranes. Tunable thermal properties make these structures good candidates for integrated heat management units such as waste heat recovery, rectification or efficient heat dissipation. However, possible applications require detailed thermal characterisation at high temperatures which, up to now, has been an experimental challenge. In this work we use the contactless two-laser Raman thermometry to study heat dissipation in periodic porous membranes at high temperatures via lattice conduction and air-mediated losses. We find the reduction of the thermal conductivity and its temperature dependence closely correlated with the structure feature size. On the basis of two-phonon Raman spectra, we attribute this behaviour to diffuse (incoherent) phonon-boundary scattering. Furthermore, we investigate and quantify the heat dissipation via natural air-mediated cooling, which can be tuned by engineering the porosity. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000409393900006 |
WOS关键词 | SURFACE RECOMBINATION ; PHONON-SCATTERING ; RAMAN-SPECTRUM ; HOLEY SILICON ; TRANSPORT ; LAYERS ; CRYSTALS ; FILMS |
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/204385 |
专题 | 资源环境科学 |
作者单位 | 1.CSIC, Catalan Inst Nanosci & Nanotechnol ICN2, Campus UAB, Barcelona 08193, Spain; 2.BIST, Campus UAB, Barcelona 08193, Spain; 3.Adam Mickiewicz Univ, NanoBioMed Ctr, Ul Umultowska 85, PL-61614 Poznan, Poland; 4.Max Planck Inst Polymer Res, Ackermannweg 10, D-55218 Mainz, Germany; 5.Univ Autonoma Barcelona, Dept Phys, Campus UAB, E-08193 Barcelona, Spain; 6.Cent Supelec, CNRS, Lab Energet Mol & Macroscop, Combust, F-92295 Chatenay Malabry, France; 7.Univ Tokyo, Inst Ind Sci, CNRS UMI2820, Lab Integrated Micro Mechatron Syst,Meguro Ku, 4-6-1 Komaba, Tokyo 1538505, Japan; 8.ICREA, Pg Lluis Companys 23, Barcelona 08010, Spain; 9.ICMAB CSIC, Inst Ciencia Mat Barcelona, Campus Univ Bellaterra, E-08193 Bellaterra, Spain; 10.Tech Univ Berlin, Inst Solid State Phys, Hardenbergstr 36, D-10623 Berlin, Germany |
推荐引用方式 GB/T 7714 | Graczykowski, B.,El Sachat, A.,Reparaz, J. S.,et al. Thermal conductivity and air-mediated losses in periodic porous silicon membranes at high temperatures[J]. NATURE COMMUNICATIONS,2019,8. |
APA | Graczykowski, B..,El Sachat, A..,Reparaz, J. S..,Sledzinska, M..,Wagner, M. R..,...&Sotomayor Torres, C. M..(2019).Thermal conductivity and air-mediated losses in periodic porous silicon membranes at high temperatures.NATURE COMMUNICATIONS,8. |
MLA | Graczykowski, B.,et al."Thermal conductivity and air-mediated losses in periodic porous silicon membranes at high temperatures".NATURE COMMUNICATIONS 8(2019). |
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