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Absorption of Radiation01:05

Absorption of Radiation

The rate of heat transfer by emitted radiation is described by the Stefan-Boltzmann law of radiation:

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相关实验视频

Updated: Jul 6, 2026

Synthesis of Near-Infrared Emitting Gold Nanoclusters for Biological Applications
09:11

Synthesis of Near-Infrared Emitting Gold Nanoclusters for Biological Applications

Published on: March 22, 2020

量子大小的黄金星团作为高效的两光子吸收器.

Guda Ramakrishna1, Oleg Varnavski, Junhyung Kim

  • 1Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, USA.

Journal of the American Chemical Society
|March 25, 2008
PubMed
概括
此摘要是机器生成的。

黄金纳米星团表现出强烈的两光子吸收,对量子大小的星团有创纪录的截面. 这些特性使它们成为先进应用的理想选择,如双光子成像和光学功率限制.

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A Rapid and Quantitative Fluorimetric Method for Protein-Targeting Small Molecule Drug Screening
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Published on: February 5, 2016

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Last Updated: Jul 6, 2026

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09:11

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Published on: March 22, 2020

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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
  • 量子化学 是一个量子化学.

背景情况:

  • 黄金集群表现出独特的光学特性.
  • 两光子吸收 (TPA) 对于先进的光学应用至关重要.

研究的目的:

  • 调查黄金星团的两光子吸收特性.
  • 确定各种金大小的TPA截面.
  • 探索这些集群的潜在应用.

主要方法:

  • 两光子激发光谱学.
  • 时间解析的光向上转换测量.
  • 黄金集群大小的系统变化 (Au25到Au2406).

主要成果:

  • Au25星团的TPA截面在1290nm时为2700GM.
  • 可见光,允许两光子,观察到小黄金集群.
  • 测量了量子大小的黄金集群的创纪录的高TPA截面.

结论:

  • 黄金纳米集群具有显著的两光子吸收能力.
  • 量子大小的黄金星团对两光子成像有希望.
  • 潜在的应用包括光学功率限制和石版画.