4Pi MINFLUX 排列最大限度地提高了光发射器的时空定位精度
Julian D Rickert1,2, Marcus O Held1, Johann Engelhardt1
1Department of Optical Nanoscopy, Max Planck Institute for Medical Research, Heidelberg 69120, Germany.
概括
我们开发了一种4Pi MINFLUX方法,用于超精确的3D单分子定位,每光子达到创纪录的精度. 这种技术揭示了溶液中的纳米扩散异质性,适用于研究分子环境.
科学领域:
- 光学显微镜是一种光学显微镜.
- 纳米技术纳米技术
- 生物物理学的生物物理.
背景情况:
- 单个分子的精确3D定位对于理解纳米级动态至关重要.
- 现有的方法在研究复杂环境时,在精度和速度方面存在局限性.
研究的目的:
- 引入先进的4Pi MINFLUX光学配置,以提高3D单分子定位精度.
- 证明这种方法在分析纳米扩散和分子环境方面的能力.
主要方法:
- 使用4Pi光学设置与对立目标的干扰度照明.
- 采用三个连续倾斜的,反传播的光束对来进行精确的照明控制.
- 通过两个目标镜头收集光子以最大限度地定位精度.
主要成果:
- 在所有定位方案中,实现了每个检测到的光子的最高精度.
- 在2.9kHz的定位频率下,黄金纳米颗粒的证明亚纳米体积不确定性 (<0.4nm3).
- 揭示了单个光体和纳米珠在糖溶液中的扩散中的纳米级异质性.
结论:
- 4Pi MINFLUX 方法为纳米级研究提供了前所未有的时空分辨率.
- 适用于研究分子纳米环境和量化生物和材料系统中的快速分子运动.
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