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首页> 外文会议>Nanomaterial Synthesis and Integration for Sensors, Electronics, Photonics, and Electro-Optics; Proceedings of SPIE-The International Society for Optical Engineering; vol.6370 >The effect of morphology and surface doping on sensitization of quasi-1D metal oxide nanowire gas sensors
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The effect of morphology and surface doping on sensitization of quasi-1D metal oxide nanowire gas sensors

机译：形态和表面掺杂对准一维金属氧化物纳米线气体传感器敏化的影响

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摘要

Quasi 1-D metal oxide single crystal chemiresistors are about to occupy their specific niche in the real world solid state sensorics. The major expected advantage of this kind of sensors with respect to available granular thin film sensors will be their smaller size and stable, reproducible and calculable performance within a wide range of operating conditions. To be able to compete in sensitivity with the best available nanocrystalline thin film sensors, one has to use very fine nanowires with the effective diameter of the order of ten nanometers. Fabrication of nanostructures reproducibly and controllably in this size domain remains a challenging task. The second challenge is a control of the selectivity of these nanosensors. In this report, a few exemplary approaches to grow and functionalize the prospective nanosensors are presented. Namely, in order to produce the nanostructures with the reduced diameter of the conducting channel, we grow nanowires with the oscillating morphologies where mesoscopic, several microns long segments are connected by the segments with much smaller diameters. In order to tune the sensitivity and selectivity of these sensors the influence of the surface sensitization with catalyst particles of Ni/NiO and Pd were examined.
机译：准一维金属氧化物单晶化学电阻器将在现实世界的固态传感技术中占据特定的位置。相对于可用的颗粒状薄膜传感器，这类传感器的主要预期优势是它们的尺寸更小，并且在各种操作条件下都具有稳定，可重现和可计算的性能。为了能够在灵敏度上与最好的纳米晶薄膜传感器竞争，人们必须使用非常细的纳米线，其有效直径约为10纳米。在这种尺寸范围内可再现和可控地制造纳米结构仍然是一项艰巨的任务。第二个挑战是控制这些纳米传感器的选择性。在这份报告中，提出了一些示例性方法来生长和功能化预期的纳米传感器。即，为了产生具有减小的导电通道直径的纳米结构，我们生长具有振荡形态的纳米线，其中介观的，几微米长的段通过直径小得多的段连接。为了调整这些传感器的灵敏度和选择性，研究了Ni / NiO和Pd催化剂颗粒对表面敏化的影响。

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