【摘 要】
：
ZnO-SnO2 composite nanofibers are synthesized via an electrospinning method and characterized by x-ray diffraction,scanning electron microscopy,and transmission
【机 构】
：
Key Laboratory of Key Technology on Agricultural Machine and Equipment(Ministry of Education), Engin
论文部分内容阅读
ZnO-SnO2 composite nanofibers are synthesized via an electrospinning method and characterized by x-ray diffraction,scanning electron microscopy,and transmission electron microscopy.Micro sensors are fabricated by spinning the nanofibers on Si substrates with Pt signal and heater electrodes.The sensors with small areas (600 μm × 200 μm) can detect CO down to 1 ppm at 360C.The corresponding sensitivity,response time,and recovery time are 3.2,6s,and 11 s,respectively.Importantly,the sensors can operate at high humidity conditions.The sensitivity only decreases to 2.3 when the sensors are exposed to 1 ppm CO at 95％ relative humidity.These excellent sensing properties are due to combining the benefits of one-dimensional nanomaterials and the ZnO-SnO2 grain boundary in the nanofibers.
其他文献
一、概述 工业机器人(以下简称机器人)的应用已日益普及,在许多场合下,为提高产品质量、生产率和生产柔性,应用机器人是必不可少的,如汽车的焊装、新结构自行车的车架焊接等
首先分析了系统风险和非系统风险对证券投资收益的影响;然后,讨论β系数在分析投资风险中的意义和作用;最后,运用均值方差模型(MVM)和资本资产定价模型(CAPM)理论给出β约束
The crystal surface properties of potassium tantalite niobate,KTa0.5Nb0.5O3 (KTN),are studied with firstprinciples calculation based on the density functional t
Stability of a dust acoustic wave in cylindrical complex plasmas is investigated.Effects of a static magnetic field (axial) and an electric field (radial) on th
“留白”原是国画创作中的一种构图方法,它的意思是计白当黑,可以收到虚实相生、形神兼备的艺术效果,创造出“无画处亦成妙境”的艺术境界。语文教学是对文学作品语言美、结
The acoustic nonlinearity of surface waves is studied to evaluate plastic deformation in aluminum alloys.A narrow-band surface wave is successfully generated by
Current self-oscillation in doped n+nn+ wurtzite InN diodes driven by a dc electric field is theoretically investigated by solving the time-dependent drift-diff
75As nuclear magnetic resonance (NMR) was measured for Ba(Fe1-xNix)2As2 single crystals with x =0.05 and x =0.1 under 0 and 1.5GPa,respectively.For the optimal
Neuronal firing that carries information can propagate stably in neuronal networks.One important feature of the stable states is their spatiotemporal correlatio