Influence of Polymeric Residue on the Thermal Conductivity of Suspended Bilayer Graphene
Influence of Polymeric Residue on the Thermal Conductivity of Suspended Bilayer Graphene
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DOI：
10.1021/nl104156y
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发表时间：
2011-03-01
期刊：
影响因子：
10.8
通讯作者：
Shi, Li
中科院分区：
文献类型：
--
作者：
Pettes, Michael Thompson;Jo, Insun;Shi, Li
两个双层石墨烯样品的热导率（K）在室温下测量为620 +/- 80和560 +/-70 W m（-1）K-1，并且在50和125 K之间的温度（T）下表现出与T-1.5成比例的k行为。较低的k比悬浮的石墨烯沿着与温度的依赖性计算的是由于在双层石墨烯中的声子的散射由残留的聚合物层，这是清楚地观察到的透射电子显微镜。
The thermal conductivity (K) of two bilayer graphene samples each suspended between two microresistance thermometers was measured to be 620 +/- 80 and 560 +/- 70W m(-1) K-1 at room temperature and exhibits a k proportional to T-1.5 behavior at temperatures (T) between 50 and 125 K. The lower k than that calculated for suspended graphene along with the temperature dependence is attributed to scattering of phonons in the bilayer graphene by a residual polymeric layer that was clearly observed by transmission electron microscopy.