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Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters
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缺陷缓解增强的等离子光热转换.

Shuyi Zhu1,2, Shuai Xu3, Yujing Guo1

  • 1Key Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China.

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|May 26, 2023
PubMed
概括

引入缺陷诱导的阻尼,以增强在等离子纳米结构粒子 (PNPs) 中的光热转化. 这一策略显著提高了效率,特别是对于较大的颗粒,通过验证的体外和体内应用.

关键词:
用缺陷丰富的等离子体纳米粒子.缺陷引起的减噪是由于缺陷引起的.增强的等离子体光热转换.在体外和体内生物光热实验.

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科学领域:

  • 纳米技术 纳米技术
  • 材料科学 材料科学 材料科学
  • 生物医学工程 生物医学工程

背景情况:

  • 提高塑纳米结构颗粒 (PNPs) 的光热转换效率对于热塑应用至关重要.
  • 对于具有特定形态和组成要求的PNP来说,实现高效率是具有挑战性的.

研究的目的:

  • 提出一种新的策略,以本质地提高PNP中的光热转换.
  • 为了研究缺陷引起的减噪对PNP光热性能的影响.

主要方法:

  • 开发了一个缺陷缓和波器的理论模型,以将PNP结构与光热转换相关联.
  • 制造的缺陷丰富的金纳米星 (Au NSs) 尺寸约为100-150nm.
  • 进行了体外和体内实验,以验证增强的光热性能.

主要成果:

  • 理论分析表明,缺陷诱导的减噪抑制光散射,并提高光热转换效率,特别是在较大的PNP (>100 nm) 中.
  • 在实验中,缺陷丰富的Au NS表现出明显更高的光热性能,与缺陷贫富的对应物相比,转换效率提高了23%.
  • 试验室和体内研究证实了缺陷丰富PNP在细胞和小鼠瘤中的优越光热疗效.

结论:

  • 缺陷诱导的缓冲提供了一种内在的策略,可以显著增强足够大的PNP的光热转换.
  • 这种方法适用于具有特定应用驱动形态和组成的PNP.
  • 该策略可以与现有方法相结合,以进一步提高光热性能.