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相关概念视频

Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been developed.

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使用向上转换纳米粒子进行多光子聚合,用于可调节的特征大小打印.

Qianyi Zhang1, Antoine Boniface1, Virendra K Parashar2

  • 1Laboratory of Applied Photonics Devices, School of Engineering, Institute of Electrical and Micro Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.

Nanophotonics (Berlin, Germany)
|December 5, 2024
PubMed
概括
此摘要是机器生成的。

向上转换纳米粒子 (UCNPs) 通过转换近红外光来启动聚合,使得使用廉价激光实现3D打印. 研究人员证明了对声量尺寸的控制,为微米尺度的3D结构铺平了道路.

关键词:
添加剂制造 添加剂制造 添加剂制造这种水凝是水凝.基于光的3D打印技术多光子聚合法多光子聚合法光聚合的光聚合方式.上升转换纳米粒子

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科学领域:

  • 材料科学 材料科学 材料科学
  • 纳米技术 纳米技术
  • 增材制造 增材制造 增材制造

背景情况:

  • 基于光的3D打印或光聚合通常使用紫外线或蓝光来凝固树脂.
  • 双光子打印 (TPP) 提供高分辨率,但需要昂贵的五秒激光器.
  • 向上转换纳米粒子 (UCNPs) 可以将近红外 (NIR) 光转换为可见/紫外光,作为一种替代的启动方法.

研究的目的:

  • 为了研究UCNP启动的光聚合的多光子机制.
  • 通过使用UCNP来证明非线性对3D打印过程的影响.
  • 通过调整NIR激发强度来探索打印的voxel大小的微调.

主要方法:

  • 利用UCNP吸收NIR光并启动光聚合.
  • 研究了UCNP系统中的多光子吸收机制.
  • 调整NIR激发功率以控制基于凝的水凝中的语音尺寸.

主要成果:

  • 证明UCNP能够使用连续波NIR激光器进行光聚合.
  • 表明NIR激发强度直接相关,并允许调整voxel大小.
  • 在不改变聚合度的情况下,实现了横向角尺寸 (1.32.8 μm) 和轴向角尺寸 (7.759 μm) 的控制.

结论:

  • 基于UCNP的光聚合为高分辨率3D打印提供了TPP的经济有效的替代方案.
  • 通过调整NIR功率来调整voxel大小的能力,可以精确控制3D结构的制造.
  • 这项技术为使用可访问的激光源创建微米特征大小的3D结构打开了新的道路.