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Matrix induced in-situ growth of crystalline Au nanoparticles for photonic applications

机译:基质诱导的用于光子应用的晶体金纳米颗粒的原位生长

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摘要

The authors present a novel in-situ method of fabricating crystalline gold nanoparticles by self-organization. This nanoparticles are grown and modified in a surrounding thin film matrix using two different host materials (YBa_2Cu_3O_(7-δ) and SrTiO_3) prepared by a pulsed laser deposition technique. The crystalline Au nanoparticles are formed out of a gold seed layer whereby the thickness of the initial seed layer influences the particle size and their distribution density. As we will show, using a matrix based preparation technique offers several advantages over conventional preparation methods. On the one hand, nanoparticle size and the distribution density can be controlled individually. On the other hand, by choosing an appropriate matrix material as well as suitable growth conditions also the shape of the resulting particles can be modified. Thus, also anisotropic nanoparticles can be prepared without using highly sophisticated methods like electron beam lithography or focused ion beam techniques. As one might have to extract the nanoparticles or at least theirs tips from the surrounding matrix material to realize photonic applications, we will show that an extraction is easily possible by selectively etching the matrix. This extraction process does not influence the particle distribution, i.e. particles can be prepared and extracted at distinct positions on the substrate utilizing a patterning of the Au seed layer. A spectral characterization of extracted as well as embedded particles will be presented based on microspectroscopy as well as on measurements using an integrating sphere.
机译:作者提出了一种通过自组织制造结晶金纳米颗粒的新颖原位方法。使用通过脉冲激光沉积技术制备的两种不同的主体材料(YBa_2Cu_3O_(7-δ)和SrTiO_3)在周围的薄膜基质中生长和修饰该纳米粒子。结晶的金纳米颗粒由金种子层形成,由此初始种子层的厚度影响粒径及其分布密度。正如我们将显示的,使用基于矩阵的制备技术比常规制备方法具有多个优势。一方面,纳米颗粒的大小和分布密度可以单独控制。另一方面,通过选择合适的基质材料以及合适的生长条件,也可以改变所得颗粒的形状。因此,也可以在不使用高度复杂的方法(例如电子束光刻或聚焦离子束技术)的情况下制备各向异性纳米粒子。由于可能必须从周围的基质材料中提取纳米颗粒或至少它们的尖端才能实现光子应用,因此我们将展示通过选择性蚀刻基质很容易实现的提取。该提取过程不影响颗粒分布,即,可以利用Au种子层的图案在衬底上的不同位置处制备和提取颗粒。将基于显微光谱以及使用积分球的测量结果,对提取的颗粒和嵌入的颗粒进行光谱表征。

著录项

  • 来源
    《Nanophotonic materials X》|2013年|88070K.1-88070K.9|共9页
  • 会议地点 San Diego CA(US)
  • 作者单位

    Friedrich-Schiller-University Jena, Institute of Solid State Physics, Helmholtzweg 5, 07743 Jena,Germany;

    Friedrich-Schiller-University Jena, Institute of Solid State Physics, Helmholtzweg 5, 07743 Jena,Germany;

    Friedrich-Schiller-University Jena, Institute of Solid State Physics, Helmholtzweg 5, 07743 Jena,Germany;

    Friedrich-Schiller-University Jena, Institute of Solid State Physics, Helmholtzweg 5, 07743 Jena,Germany;

    Institute of Photonic Technology, Albert-Einstein-Strasse 5, 07743 Jena, Germany;

    Institute of Photonic Technology, Albert-Einstein-Strasse 5, 07743 Jena, Germany;

    Otto Schott Institute of Materials Research, Loebdergraben 32, 07743 Jena, Germany;

    Otto Schott Institute of Materials Research, Loebdergraben 32, 07743 Jena, Germany;

    Otto Schott Institute of Materials Research, Loebdergraben 32, 07743 Jena, Germany;

    Friedrich-Schiller-University Jena, Institute of Solid State Physics, Helmholtzweg 5, 07743 Jena,Germany;

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

    rod-like nanoparticles; surface plasmon resonance; self-assembly; matrix-induced growth; biosensors; dewetting; in-situ preparation; gold;

    机译:棒状纳米颗粒;表面等离子体共振;自组装;基质诱导的生长;生物传感器除湿原位制备;金;

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