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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Aligned carbon nanotubes as polarization-sensitive, molecular near-field detectors
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Aligned carbon nanotubes as polarization-sensitive, molecular near-field detectors

机译:对齐的碳纳米管作为偏振敏感的分子近场检测器

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摘要

Near-field scanning optical microscopes are widely used in imaging of subwavelength features in various material systems and nano-structures. For a variety of applications, polarization-sensitive near-field probes can provide valuable information on the nature and symmetry of the imaged nanoparticles and emitters. Conventional near-field optical microscopy lacks in-plane polarization sensitivity. Here, we use aligned single-wall carbon nanotubes as polarization-sensitive molecular scale probes to image the transverse near-field components of an optical Hertzian dipole antenna. Because of the Raman "antenna effect" in carbon nanotubes, only the near-field components along the nanotube axis are detected. These findings demonstrate that aligned carbon nanotubes can be used as polarization-sensitive near-field detectors.
机译:近场扫描光学显微镜广泛用于各种材料系统和纳米结构中亚波长特征的成像。对于各种应用,偏振敏感的近场探头可以提供有关成像纳米粒子和发射器的性质和对称性的有价值的信息。传统的近场光学显微镜缺乏面内偏振灵敏度。在这里,我们使用对准的单壁碳纳米管作为偏振敏感的分子尺度探针,以成像光学赫兹偶极天线的横向近场分量。由于碳纳米管中的拉曼“天线效应”,仅沿纳米管轴的近场分量被检测到。这些发现表明,对齐的碳纳米管可用作偏振敏感的近场检测器。

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  • 作者单位

    School of Engineering and Applied Sciences, Harvard University, 9 Oxford Street, Cambridge, MA 02138;

    School of Engineering and Applied Sciences, Harvard University, 9 Oxford Street, Cambridge, MA 02138;

    Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA 02138;

    School of Engineering and Applied Sciences, Harvard University, 9 Oxford Street, Cambridge, MA 02138;

    Department of Materials Science and Engineering, University of Illinois, Urbana, IL 61801;

    School of Engineering and Applied Sciences, Harvard University, 9 Oxford Street, Cambridge, MA 02138;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    optical antenna; plasmonics;

    机译:光学天线等离子体;

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