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首页> 外文会议>Optical trapping and optical micromanipulation VIII >Plasmonic Nanopillar Arrays for Optical Trapping, Biosensing, and Spectroscopy
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Plasmonic Nanopillar Arrays for Optical Trapping, Biosensing, and Spectroscopy

机译：等离子纳米柱阵列，用于光学陷印，生物传感和光谱学

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摘要

In this work, we propose a unique plasmonic substrate that combine the strength of localized and extended surface plasmons for optical trapping, spectroscopy and biosensing, all in the same platform. The system is based on periodic arrays of gold nanopillars fabricated on a thin gold sheet. The proposed periodic structure exhibits high refractive index sensitivities, as large as 675 nm/RIU which is highly desirable for biosensing applications. The spectrally sharp resonances, we determine a figure of merit, as large as 112.5. The nanopillar array also supports easily accessible high near-field enhancements, as large as 10.000 times, for surface enhanced spectroscopy. The plasmonic hot spots with high intensity enhancement lead to large gradient forces, 350 pN/W//im2, needed for optical trapping applications.
机译：在这项工作中，我们提出了一种独特的等离子体衬底，该衬底将局部和扩展表面等离子体激元的强度结合在一起，用于光学捕获，光谱学和生物传感，所有这些都在同一平台上进行。该系统基于在薄金片上制造的金纳米柱的周期性阵列。所提出的周期性结构表现出高达675 nm / RIU的高折射率灵敏度，这对于生物传感应用是非常需要的。光谱上的尖锐共振，我们确定了一个品质因数，高达112.5。纳米柱阵列还支持可轻松获得的高达10.000倍的高近场增强，用于表面增强光谱。具有高强度增强的等离激元热点导致光学陷波应用所需的大梯度力350 pN / W // im2。

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  • 来源
    《Optical trapping and optical micromanipulation VIII》|2011年|p.80971P.1-80971P.7|共7页
  • 会议地点 San Diego CA(US)
  • 作者

    Arif E. Cetin; Ahmet Ali Yanik; Cihan Yilmaz; Sivasubramanian Somu; Ahmed Busnaina; Hatice Altug;

  • 作者单位

    Department of Electrical and Computer Engineering, and Photonics Center, Boston University, Boston, Massachusetts 02215, USA;

    Department of Electrical and Computer Engineering, and Photonics Center, Boston University, Boston, Massachusetts 02215, USA;

    NSF Nanoscale Science and Engineering Center for High-rate Nanomanufacturing,Northeastern University, Boston, Massachusetts 02215, USA;

    NSF Nanoscale Science and Engineering Center for High-rate Nanomanufacturing,Northeastern University, Boston, Massachusetts 02215, USA;

    NSF Nanoscale Science and Engineering Center for High-rate Nanomanufacturing,Northeastern University, Boston, Massachusetts 02215, USA;

    Department of Electrical and Computer Engineering, and Photonics Center, Boston University, Boston, Massachusetts 02215, USA;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 光学;
  • 关键词

    plasmonics; optical trapping; biosensing; spectroscopy;

    机译：等离子体光学陷阱生物传感光谱学;

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