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首页> 外文期刊>Applied Surface Science >Properties of ordered titanium templates covered with Au thin films for SERS applications
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Properties of ordered titanium templates covered with Au thin films for SERS applications

机译：用于SERS应用的覆盖有Au薄膜的有序钛模板的性能

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摘要

Currently, roughened metal nanostructures are widely studied as highly sensitive Raman scattering substrates that show application potential in biochemistry, food safety or medical diagnostic. In this work the structural properties and the enhancement effect due to surface enhanced Raman scattering (SERS) of highly ordered nano-patterned titanium templates covered with thin (5-20 nm) gold films are reported. The templates are formed by preparation of a dense structure of TiO2 nanotubes on a flat Ti surface (2 x 2 cm(7)) and their subsequent etching down to the substrate. SEM images reveal the formation of honeycomb nanostructures with the cavity diameter of 80 nm. Due to the strongly inhomogeneous distribution of the electromagnetic field in the vicinity of the Au film discontinuities the measured average enhancement factor (10(7)-10(8)) is markedly higher than observed for bare Ti templates. The enhancement factor and Raman signal intensity can be optimized by adjusting the process conditions and thickness of the deposited Au layer. Results confirm that the obtained structures can be used in surface enhanced sensing. (C) 2016 Elsevier B.V. All rights reserved.
机译：当前，粗糙化的金属纳米结构已被广泛研究为高度敏感的拉曼散射基底，显示出在生物化学，食品安全或医学诊断中的应用潜力。在这项工作中，报道了覆盖有薄的（5-20​​ nm）金膜的高度有序的纳米图案钛模板的表面增强拉曼散射（SERS）引起的结构性能和增强效果。通过在平坦的Ti表面（2 x 2 cm（7））上制备TiO2纳米管的致密结构并随后将其向下蚀刻至基板来形成模板。 SEM图像揭示了腔直径为80nm的蜂窝状纳米结构的形成。由于在Au膜间断点附近电磁场的分布非常不均匀，因此测得的平均增强因子（10（7）-10（8））明显高于裸Ti模板的观测值。增强因子和拉曼信号强度可以通过调整工艺条件和沉积的金层的厚度来优化。结果证实，所获得的结构可用于表面增强感测。 （C）2016 Elsevier B.V.保留所有权利。

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  • 来源
    《Applied Surface Science》 |2016年第ptab期|716-722|共7页
  • 作者

    Grochowska Katarzyna; Siuzdak Katarzyna; Sokolowski Michal; Karczewski Jakub; Szkoda Mariusz; Sliwinski Gerard;

  • 作者单位

    Polish Acad Sci, Szewalski Inst Fluid Flow Machinery, Ctr Plasma & Laser Engn, Fiszera 14 St, PL-80231 Gdansk, Poland;

    Polish Acad Sci, Szewalski Inst Fluid Flow Machinery, Ctr Plasma & Laser Engn, Fiszera 14 St, PL-80231 Gdansk, Poland;

    Gdansk Univ Technol, Fac Appl Phys & Math, Narutowicza 11-12 St, PL-80233 Gdansk, Poland;

    Gdansk Univ Technol, Fac Appl Phys & Math, Narutowicza 11-12 St, PL-80233 Gdansk, Poland;

    Polish Acad Sci, Szewalski Inst Fluid Flow Machinery, Ctr Plasma & Laser Engn, Fiszera 14 St, PL-80231 Gdansk, Poland|Gdansk Univ Technol, Fac Chem, Narutowicza 11-12 St, PL-80233 Gdansk, Poland;

    Polish Acad Sci, Szewalski Inst Fluid Flow Machinery, Ctr Plasma & Laser Engn, Fiszera 14 St, PL-80231 Gdansk, Poland;

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  • 正文语种 eng
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  • 关键词

    Anodization; Dimpled Ti templates; Au thin layers; SERS measurements;

    机译：阳极氧化;凹痕Ti模板;Au薄层;SERS测量;

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