...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Shape and Size Effect on Photothermal Heat Elevation of Gold Nanoparticles: Absorption Coefficient Experimental Measurement of Spherical and Urchin-Shaped Gold Nanoparticles
【24h】

Shape and Size Effect on Photothermal Heat Elevation of Gold Nanoparticles: Absorption Coefficient Experimental Measurement of Spherical and Urchin-Shaped Gold Nanoparticles

机译：金纳米颗粒光热升高的形状和尺寸效应：球形和内核形金纳米粒子的吸收系数实验测量

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Gold nanoparticles (GNP) are very suitable agents for thermal destruction of cancer cells because of their photothermal heating ability. In this work, photothermal properties of different sizes and shapes of GNPs were studied regarding different parameters such as GNP concentration, laser excitation intensity, and exposure time. By using the heat transfer theory, the temperature elevation in the GNP solutions was converted in temperature elevation at the GNP surface. This allows us to determine the absorption cross section (sigma(abs)) of two different sizes of spherical gold nanoparticles (GNS), which were compared with the theoretical calculations based on the Mie theory, and both results were in a good agreement. sigma(abs) was determined also for gold nanourchins with different sizes (50, 80, and 90 nm) with high precision. Finally, the temperature elevation speeds were experimentally measured for all GNPs, and we have demonstrated that they are proportional to the GNP surface area as demonstrated in the classical diffusive heat transport theory. The proposed approaches can be used to monitor the local heat generation around the GNP and pave the way to the optimization of the photothermal properties of GNPs.
机译：由于光热加热能力，金纳米颗粒（GNP）是非常合适的药物，用于热破坏癌细胞。在这项工作中，研究了关于不同参数的不同尺寸和形状的光热性质，例如GNP浓度，激光激发强度和曝光时间。通过使用传热理论，GNP溶液中的温度升高在GNP表面的温度升高中转化。这使我们可以确定两种不同尺寸的球形金纳米颗粒（GNS）的吸收横截面（Sigma（ABS））与基于MIE理论的理论计算进行比较，并且两个结果都处于良好的一致性。 Sigma（ABS）也针对具有高精度的不同尺寸（50,80和90nm）的金纳米氏素。最后，对所有GNP进行了实验测量的温度升高速度，我们已经证明它们与GNP表面积成比例，如在经典扩散热传输理论中所示。所提出的方法可用于监测GNP周围的局部发热，并铺平了GNP的光热性能的优化。

著录项

  • 来源
  • 作者

    Moustaoui Hanane; Saber Justine; Djeddi Ines; Liu Qiqian; Diallo Amadou Thierno; Spadavecchia Jolanda; de la Chapelle Marc Lamy; Djaker Nadia;

  • 作者单位

    Univ Paris 13 Sorbonne Paris Cite CNRS UMR 7244 UFR SMBH Lab CSPBAT 74 Rue Marcel Cachin F-93017 Bobigny France;

    Univ Paris 13 Sorbonne Paris Cite CNRS UMR 7244 UFR SMBH Lab CSPBAT 74 Rue Marcel Cachin F-93017 Bobigny France;

    Univ Paris 13 Sorbonne Paris Cite CNRS UMR 7244 UFR SMBH Lab CSPBAT 74 Rue Marcel Cachin F-93017 Bobigny France;

    Univ Paris 13 Sorbonne Paris Cite CNRS UMR 7244 UFR SMBH Lab CSPBAT 74 Rue Marcel Cachin F-93017 Bobigny France;

    Univ Paris 13 Sorbonne Paris Cite CNRS UMR 7244 UFR SMBH Lab CSPBAT 74 Rue Marcel Cachin F-93017 Bobigny France;

    Univ Paris 13 Sorbonne Paris Cite CNRS UMR 7244 UFR SMBH Lab CSPBAT 74 Rue Marcel Cachin F-93017 Bobigny France;

    Univ Paris 13 Sorbonne Paris Cite CNRS UMR 7244 UFR SMBH Lab CSPBAT 74 Rue Marcel Cachin F-93017 Bobigny France;

    Univ Paris 13 Sorbonne Paris Cite CNRS UMR 7244 UFR SMBH Lab CSPBAT 74 Rue Marcel Cachin F-93017 Bobigny France;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 物理化学（理论化学）、化学物理学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

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