thermal conductivity of a monolayer of exfoliated graphite nanoplatelets prepared by liquid-liquid interfacial self-assembly
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ID: 233898
2010
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Abstract
A monolayer film composed of exfoliated graphite nanoplatelets (xGnPs) was extracted from a chloroform-water interface and supported on a glass substrate. The nanoplatelets are interconnected at the edges without overlapping forming a very densely packed structure with uniform thickness. Micro-Raman spectroscopy with a 50 mW 532 nm laser generating heat at the center of a xGnP sample was used to probe the thermal conductivity of the xGnP monolayer at different power levels. The Raman G peak shift of graphite was used to record the local temperature rise in the monolayer. The cross-sectional area of heat conduction is determined by the thickness of individual nanoplatelets. A UV-Vis spectrometer was used to measure the absorption of light by the monolayer. Depending on the interface density, the thermal conductivities are around 380 W/m K and 290 W/m K for monolayers with average particle size of 10 μm and 5 μm, respectively.
| Reference Key |
xiang2010journalthermal
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|---|---|
| Authors | ;Jinglei Xiang;Lawrence T. Drzal |
| Journal | reproductive biology and endocrinology |
| Year | 2010 |
| DOI |
10.1155/2010/481753
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| URL | |
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