Ballistic Energy Transport in Oligomers

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• 作者：Natalia I. Rubtsova ; Layla N. Qasim ; Arkady A. Kurnosov ; Alexander L. Burin ; Igor V. Rubtsov
• 刊名：Accounts of Chemical Research
• 出版年：2015
• 出版时间：September 15, 2015
• 年：2015
• 卷：48
• 期：9
• 页码：2547-2555
• 全文大小：822K
• ISSN：1520-4898

文摘

The development of nanocomposite materials with desired heat management properties, including nanowires, layered semiconductor structures, and self-assembled monolayer (SAM) junctions, attracts broad interest. Such materials often involve polymeric/oligomeric components and can feature high or low thermal conductivity, depending on their design. For example, in SAM junctions made of alkane chains sandwiched between metal layers, the thermal conductivity can be very low, whereas the fibers of ordered polyethylene chains feature high thermal conductivity, exceeding that of many pure metals. The thermal conductivity of nanostructured materials is determined by the energy transport between and within each component of the material, which all need to be understood for optimizing the properties. For example, in the SAM junctions, the energy transport across the metal-chain interface as well as the transport through the chains both determine the overall heat conductivity, however, to separate these contributions is difficult.