SBIR Phase I: Secondary Electron Emission from Nanowire Arrays

这个小企业创新研究（SBIR）第一阶段项目将优化金属阳极氧化铝（AAO）纳米线阵列的二次电子发射（SEE）性能，该纳米线表面涂有薄氧化镁（MgO）膜。金、铁和镍纳米线阵列将使用模板技术生产。该技术利用了铝在适当条件下阳极氧化时形成的自组织孔结构，用作形成纳米线的模板。在纳米结构材料被加工后，将测量SEE系数并确定最佳结构。将探索纳米线SEE结构与光电阴极技术的耦合，以产生快速、高效和低成本的新型微型光学探测器。这些器件的性能可能超过PIN和雪崩光电二极管。此外，这些装置可以直接与基于硅的控制电子器件集成。从MgO涂层的金属纳米线阵列研究SEE可以获得的商业潜力在于使用SEE中的预计增强来设计电子倍增器设备，该设备超越现有技术，将少量电子快速放大为数据采集和分析的重要信号。这些设备将在商业和科学界找到市场，作为实验，光通信和检测危险生物化学试剂的光学传感器。

This Small Business Innovation Research (SBIR) Phase I project will optimize the secondaryelectron emission (SEE) properties of arrays of metallic anodized aluminum oxide (AAO) nanowires coated with a thin magnesium oxide (MgO) film. Arrays of gold, iron and nickel nanowires will be produced using a template technique. The technique exploits the self-organizational pore structures that develop when aluminum is anodized under the proper conditions for use as a template to form the nanowires. After the nanostructured materials are processed the SEE coeficient will be measured and the optimum structure identified. The coupling of the nanowire SEE structures with photocathode technology to produce a new class of miniature optical detectors that are fast, efficient and low-cost will be explored. These devices could outperform PIN and avalanche photodiodes. Further, these devices can be directly integrated with silicon based control electronics. The commercial potential that can be derived from studying the SEE from MgO coatedmetallic nanowire arrays lies in using the projected enhancement in the SEE to engineerelectron multiplier devices that surpass existing technologies to rapidly amplify a smallnumber of electrons into a significant signal for data acquisition and analysis. These devices would find a market in the commercial and scientific communities as optical sensors for experimentation, optical communications, and the detection of hazardous bio-chemical agents.