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Subatomic Particles03:37

Subatomic Particles

Dalton was only partially correct about the particles that make up matter. All matter is composed of atoms, and atoms are composed of three smaller subatomic particles: protons, neutrons, and electrons. These three particles account for the mass and the charge of an atom.

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光子雪崩的纳米粒子

Luan N Passini1, Emory M Chan1, Bruce E Cohen1,2

  • 1The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.

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|February 25, 2026
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概括
此摘要是机器生成的。

光子雪崩纳米粒子 (ANPs) 通过极端光非线性实现成像和光学计算方面的创新. 这些纳米粒子实现超高分辨率成像和新的传感能力,开辟了光子学的新前沿.

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科学领域:

  • 光子学和纳米技术的使用.
  • 材料科学 材料科学 材料科学
  • 光学物理学的光学物理学

背景情况:

  • 光子雪崩 (PA) 首次在 1979 年在批量晶体中观察到.
  • 在41年后,在光子雪崩纳米粒子 (ANP) 中实现了纳米尺度的PA.
  • ANP表现出极端的非线性,排放量可扩展到强度的第32功率.

研究的目的:

  • 探索ANP的新光学和传感特性.
  • 展示ANP在超高分辨率成像和光学计算中的潜力.
  • 研究ANP在感知外部干扰方面的应用.

主要方法:

  • 采用Tm3+添加剂的升级转换纳米粒子,用于极端非线性和超分辨率成像.
  • 采用扫描共聚焦显微镜来实现70nm的空间分辨率.
  • 在ANP中研究了NIR控制的双向光交换和内在光学可视化 (IOB).
  • 评估ANP作为广泛动态范围的力传感器.

主要成果:

  • 在Abbe极限上实现了5倍的改进,达到70nm分辨率.
  • 经过1000多个NIR控制的双向光交换周期的演示,没有光降解.
  • 开发了INPALM超分辨率技术,其定位精度低于安格斯特罗姆.
  • 展示了基于Nd3+的ANP,具有用于光学计算应用的内在光学可比性.
  • Tm3+ ANPs检测到从皮科纽顿到微纽顿的力量.

结论:

  • ANP在光学成像,纳米尺度模式和光学计算方面取得了重大进展.
  • ANP的极端非线性使得对外部干扰产生前所未有的传感能力.
  • ANP 代表了在光子学领域进行基本发现和技术创新的新平台.