• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Beilstein Journal of Nanotechnology >Laser-assisted fabrication of gold nanoparticle-composed structures embedded in borosilicate glass
【2h】

Laser-assisted fabrication of gold nanoparticle-composed structures embedded in borosilicate glass

机译：激光辅助制备嵌入硼硅酸盐玻璃中的金纳米粒子组成的结构

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We present results on laser-assisted formation of two- and three-dimensional structures comprised of gold nanoparticles in glass. The sample material was gold-ion-doped borosilicate glass prepared by conventional melt quenching. The nanoparticle growth technique consisted of two steps – laser-induced defect formation and annealing. The first step was realized by irradiating the glass by nanosecond and femtosecond laser pulses over a wide range of fluences and number of applied pulses. The irradiation by nanosecond laser pulses (emitted by a Nd:YAG laser system) induced defect formation, expressed by brown coloration of the glass sample, only at a wavelength of 266 nm. At 355, 532 and 1064 nm, no coloration of the sample was observed. The femtosecond laser irradiation at 800 nm also induced defects, again observed as brown coloration. The absorbance spectra indicated that this coloration was related to the formation of oxygen deficiency defects. After annealing, the color of the irradiated areas changed to pink, with a corresponding well-defined peak in the absorbance spectrum. We relate this effect to the formation of gold nanoparticles with optical properties defined by plasmon excitation. Their presence was confirmed by high-resolution TEM analysis. No nanoparticle formation was observed in the samples irradiated by nanosecond pulses at 355, 532 and 1064 nm. The optical properties of the irradiated areas were found to depend on the laser processing parameters; these properties were studied based on Mie theory, which was also used to correlate the experimental optical spectra and the characteristics of the nanoparticles formed. We also discuss the influence of the processing conditions on the characteristics of the particles formed and the mechanism of their formation and demonstrate the fabrication of structures composed of nanoparticles inside the glass sample. This technique can be used for the preparation of 3D nanoparticle systems embedded in transparent materials with potential applications in the design of new optical components, such as metamaterials and in plasmonics.
机译：我们介绍了由玻璃中的金纳米颗粒组成的二维和三维结构的激光辅助形成的结果。样品材料是通过常规熔融淬火制备的掺杂金离子的硼硅酸盐玻璃。纳米粒子生长技术包括两个步骤–激光诱导的缺陷形成和退火。第一步是通过在很宽的注量和施加的脉冲数范围内用纳秒和飞秒激光脉冲照射玻璃来实现的。纳秒激光脉冲（由Nd：YAG激光系统发出）的辐照仅在266 nm的波长下会引起缺陷的形成，这种缺陷的形成是由玻璃样品的褐色所致。在355、532和1064nm处，未观察到样品的着色。飞秒激光在800 nm处的照射也会引起缺陷，再次观察到为褐色。吸收光谱表明，这种着色与缺氧缺陷的形成有关。退火后，被辐照区域的颜色变为粉红色，在吸收光谱中具有相应的明确定义的峰。我们将此效应与具有由等离子体激元激发定义的光学性质的金纳米颗粒的形成相关。通过高分辨率TEM分析证实了它们的存在。在355、532和1064 nm的纳秒脉冲照射的样品中未观察到纳米颗粒的形成。发现被辐照区域的光学特性取决于激光加工参数。这些特性是根据Mie理论进行研究的，该理论也用于关联实验光谱和所形成纳米颗粒的特性。我们还讨论了加工条件对形成的颗粒的特性及其形成机理的影响，并演示了玻璃样品内部由纳米颗粒组成的结构的制造。该技术可用于制备嵌入透明材料中的3D纳米粒子系统，在新的光学组件（例如超材料）和等离激元学设计中具有潜在的应用前景。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号