The paper reports the preparation of thin film with MoO₃ nanowires (NWs) by the doctor blade method and the study of its thermal diffusivity (α) by the sensitive photothermal beam deflection (PTD) method. When the Field Emission Scanning Electron Microscopic and Atomic Force Microscopic analysis unveil its morphology as NW bundles, the X-ray diffraction analysis reveals the structure to be orthorhombic. The NWs formed are of diameter ~ 20 nm and length up to 5 μm. The standardization of the transverse PTD setup is done by determining the value of α of iron, which agrees well with literature reports. The thermal diffusivity of MoO₃ NW film is obtained as 0.0036 cm²/s, which is 9.48% of its bulk counterpart. The reduction in the thermal diffusivity of NW makes it a suitable candidate for thermoelectric applications.

本文报道了用刮刀法用MoO ₃纳米线（NWs）制备薄膜，并通过灵敏的光热束偏转（PTD）方法研究其热扩散率（α）。当场发射扫描电子显微镜和原子力显微镜分析揭示其形态为NW束时，X射线衍射分析表明该结构是正交的。形成的NW的直径约为20 nm，长度可达5μm。横向PTD装置的标准化是通过确定铁的α值来完成的，这与文献报道非常吻合。MoO ₃ NW膜的热扩散率为0.0036 cm ²/ s，占批量价格的9.48％。NW的热扩散率的降低使其成为热电应用的合适候选者。