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首页> 外文会议>ASME international design engineering technical conferences and computers and information in engineering conference 2013 >HIGH ASPECT RATIO AU/NI COAXIAL NANOROD ARRAYS FOR BIOSENSING APPLICATIONS
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HIGH ASPECT RATIO AU/NI COAXIAL NANOROD ARRAYS FOR BIOSENSING APPLICATIONS

机译：用于生物传感应用的高纵横比AU / NI同轴纳米阵列

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摘要

In this study, a novel fabrication method for high aspect ratio magnetic Au/Ni coaxial nanorod arrays is proposed. It is expected that the stiffness of the gold shell could be supported by the core nickel rod. Furthermore, a magnetic force can be employed to manipulate the motion of the coaxial nanorod arrays. The fabrication procedures include: AAO template preparation, working electrode coating, nickel electrodeposition, alumina etching, and gold-plating by an electroless nickel immersion gold (ENIG) process. Experimental results demonstrated that the proposed method in this study could synthesize high aspect ratio magnetic Au/Ni coaxial nanorod arrays. The height of the synthesized coaxial nanorods is about 65.3 μm and the diameter of each nanorod is around 0.225 μm. Hence the aspect ratio is 290. The Au/Ni coaxial nanorod array was further used as a biosensor for the detection of glucose. The sensitivity of the proposed glucose biosensor was 225 μA/(mM·cm~2) with a linear detection range of 27.5 μm to 1.38 mM, The sensitivity of the proposed Au/Ni coaxial nanorod array for glucose detection is the best among the reported works.
机译：在这项研究中，提出了一种新的高长宽比磁性金/镍同轴纳米棒阵列的制造方法。预期金壳的刚度可以由芯镍棒支撑。此外，可以采用磁力来操纵同轴纳米棒阵列的运动。制造程序包括：AAO模板准备，工作电极涂层，镍电沉积，氧化铝蚀刻以及通过化学镀镍浸金（ENIG）工艺进行的镀金。实验结果表明，该方法能够合成高长径比的Au / Ni同轴纳米棒阵列。合成的同轴纳米棒的高度约为65.3μm，每个纳米棒的直径约为0.225μm。因此，长宽比为290。Au / Ni同轴纳米棒阵列还被用作检测葡萄糖的生物传感器。提出的葡萄糖生物传感器的灵敏度为225μA/（mM·cm〜2），线性检测范围为27.5μm至1.38 mM，提出的Au / Ni同轴纳米棒阵列用于葡萄糖检测的灵敏度是报道的最好的作品。

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