Thermal conductivities of individual tin dioxide nanobelts
نویسندگان
چکیده
We have measured the thermal conductivities of a 53-nm-thick and a 64-nm-thick tin dioxide (SnO2) nanobelt using a microfabricated device in the temperature range of 80–350 K. The thermal conductivities of the nanobelts were found to be significantly lower than the bulk values, and agree with our calculation results using a full dispersion transmission function approach. Comparison between measurements and calculation suggests that phonon–boundary scattering is the primary effect determining the thermal conductivities. © 2004 American Institute of Physics. @DOI: 10.1063/1.1697622#
منابع مشابه
Characterization of Heat Propagation along Single Tin Dioxide Nanobelt Using the Thermoreflectance Method
In this paper, we studied heat transfer properties of a single tin dioxide nanobelt using non-contact high resolution thermoreflectance imaging technique. Temperature difference across the nanobelt was created by attaching its both ends to a microfabricated thin film heater and sensor pair. High resolution thermal images of the nanobelt and thin film devices were obtained at variant pulsing cur...
متن کاملHierarchical oxide nanostructures
A variety of hierarchical oxide nanostructures, including ZnO nanonails on nanowires/nanobelts, ZnO nanorods on nanobelts, comb-like ZnO nanostructures, hierarchical MgO nanowires, etc., have been synthesized by thermal vapor evaporation and condensation. Observation of these nanostructures demonstrates the diversity of the geometry of these oxides in the nanoscale range. These nanostructures m...
متن کاملThermal conductivity of group-IV semiconductors from a kinetic-collective model
The thermal conductivity of group-IV semiconductors (silicon, germanium, diamond and grey tin) with several isotopic compositions has been calculated from a kinetic-collective model. From this approach, significantly different to Callaway-likemodels in its physical interpretation, the thermal conductivity expression accounts for a transition from a kinetic (individual phonon transport) to a col...
متن کاملIntegration of metal oxide nanobelts with microsystems for nerve agent detection
We have assembled tin dioxide nanobelts with low-power microheaters for detecting dimethyl methylphosphonate sDMMPd, a nerve agent simulant. The electrical conductance of a heated nanobelt increased for 5% upon exposure to 78 parts per billion DMMP in air. The nanobelt conductance recovered fully quickly after the DMMP was shut off, suggesting that the single-crystal nanobelt was not subject to...
متن کاملZinc oxide nanostructures: growth, properties and applications
Zinc oxide is a unique material that exhibits semiconducting and piezoelectric dual properties. Using a solid–vapour phase thermal sublimation technique, nanocombs, nanorings, nanohelixes/nanosprings, nanobelts, nanowires and nanocages of ZnO have been synthesized under specific growth conditions. These unique nanostructures unambiguously demonstrate that ZnO probably has the richest family of ...
متن کامل