Profiling nanowire thermal resistance with a spatial resolution of nanometers.
basic_science · Level V
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- Record sourced from PubMed, PMID 24382310.
- Also identified by DOI 10.1021/nl4041516.
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Abstract
We report a new technique to profile the thermal resistance along a nanowire with a spatial resolution of better than 20 nm. Using this technique, we mapped the thermal conductivity along a Si0.7Ge0.3/NiSi0.7Ge0.3 heterostructured nanowire. We also measured the interfacial thermal resistance (ITR) across the Si/NiSi2 interface embedded in Si/NiSi2 heterostructured nanowires. The ITR does not change even for adjacent interfaces as close as ∼ 50 atomic layers.