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(a) A SEM image of PbTe nanowires grown by the CVT method. (b) A high-resolution TEM image of a single-crystalline PbTe nanowire. The inset shows a SAED pattern for this PbTe nanowire.
A SEM image of an individual PbTe nanowire placed on the suspended microdevice. Pt/C thermal contact was deposited locally using a dual-beam FIB to prevent thermal resistance build-up between the PbTe nanowire and membranes (inset).
(a) A SEM image of an individual PbTe nanowire on the membranes after formation of the second thermal contacts. (b) Measured thermal conductivities for a PbTe nanowire with before and after formation of the second thermal contacts. The maximum difference in thermal conductivities was 0.4 W/mK at 110 K (inset).
The measured thermal conductivities of individual single-crystalline PbTe nanowires with , 277, and 436 nm. The inset shows the diameter dependencies of thermal conductivity at temperatures of 50, 120, 180, and 300 K.
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