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首页> 外文期刊>Advanced Functional Materials >Tuning Dichroic Plasmon Resonance Modes of Gold Nanoparticles in Optical Thin Films
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Tuning Dichroic Plasmon Resonance Modes of Gold Nanoparticles in Optical Thin Films

机译：调谐光学薄膜中金纳米粒子的二向色性等离子体共振模式

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摘要

A simple method is presented to tune the gold surface plasmon resonance (SPR) modes by growing anisotropic nanoparticles into transparent SiO_2 thin films prepared by glancing angle deposition. In this type of composite film, the anisotropy of the gold nanoparticles, proved by gracing incidence small angle X-ray scattering, is determined by the tilted nanocolumnar structure of the SiO_2 host and yields a strong film dichroism evidenced by a change from an intense colored to a nearly transparent aspect depending on light polarization and/or sample orientation. The formation in these films of lithographic non-dichroic SPR patterns by nanosecond laser writing demonstrates the potentialities of this procedure to develop novel optical encryption or anti-counterfeiting structures either at micrometer- or macroscales.
机译：提出了一种简单的方法，通过将各向异性纳米粒子生长到通过掠角沉积制备的透明SiO_2薄膜中，来调节金表面等离子体共振（SPR）模式。在这种类型的复合膜中，金纳米颗粒的各向异性是由SiO_2主体的倾斜纳米柱状结构确定的，通过对入射角进行小角度X射线散射来证明，并产生了强烈的膜二向色性，这是由强烈的彩色变化所证明的。取决于光的偏振和/或样品的取向，几乎是透明的。通过纳秒激光写入在这些膜中形成平版非二向色SPR图案，表明该方法具有开发微米级或宏观级新型光学加密或防伪结构的潜力。

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  • 来源
    《Advanced Functional Materials》 |2013年第13期|1655-1663|共9页
  • 作者

    Lola Gonzalez-Garcia; Julian Parra-Barranco; Juan Ramon Sanchez-Valencia; Javier Ferrer; Mari-Cruz Garcia-Gutierrez; Angel Barranco; Agustin R. Gonzalez-Elipe;

  • 作者单位

    Nanotechnology on Surfaces laboratory Instituto de Ciencia de Materiales de Sevilla (CSIC-US) Avda. Ameerico Vespucio 49, 41092 Sevilla, Spain;

    Nanotechnology on Surfaces laboratory Instituto de Ciencia de Materiales de Sevilla (CSIC-US) Avda. Ameerico Vespucio 49, 41092 Sevilla, Spain;

    Nanotechnology on Surfaces laboratory Instituto de Ciencia de Materiales de Sevilla (CSIC-US) Avda. Ameerico Vespucio 49, 41092 Sevilla, Spain;

    Centra Nacional de Aceleradores (CNA) Universidad de Sevilla-CSIC Avenida Thomas A. Edison 7, 41092 Sevilla, Spain;

    Instituto de Estructura de la Materia (CSIC) Serrano 121, 28006 Madrid, Spain [+]Present address: EMPA, Swiss Federal Laboratories for Materials Science and Technology, nanotech@surfaces Laboratory, Ueberlandstrasse 129, 8600 Dubendorf, Switzerland;

    Nanotechnology on Surfaces laboratory Instituto de Ciencia de Materiales de Sevilla (CSIC-US) Avda. Ameerico Vespucio 49, 41092 Sevilla, Spain;

    Nanotechnology on Surfaces laboratory Instituto de Ciencia de Materiales de Sevilla (CSIC-US) Avda. Ameerico Vespucio 49, 41092 Sevilla, Spain;

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