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相关概念视频

Super-resolution Fluorescence Microscopy01:37

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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...
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Atomic Force Microscopy01:08

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Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
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相关实验视频

Updated: Jun 25, 2025

High-Throughput Total Internal Reflection Fluorescence and Direct Stochastic Optical Reconstruction Microscopy Using a Photonic Chip
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通过自适应交叉最大化实现无漂移的高吞吐量纳米学.

Hongqiang Ma1,2, Maomao Chen1, Phuong Nguyen1,2

  • 1Department of Medicine, Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15213, USA.

Science advances
|May 23, 2024
PubMed
概括

我们开发了自适应交叉最大化 (AIM),一种通过精确纠正高频漂移来提高单分子局部化显微镜 (SMLM) 解析度的新方法. 在标准硬件上,AIM有效地提高了SMLM图像质量.

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科学领域:

  • 生物物理学的生物物理.
  • 显微镜的使用方法
  • 计算生物学 计算生物学

背景情况:

  • 单分子定位显微镜 (SMLM) 对于纳米生物成像至关重要.
  • 在SMLM中,低于最佳分辨率的原因往往是未经纠正的样本漂移.
  • 现有的漂移校正方法与高频漂移和大数据集作斗争.

研究的目的:

  • 开发一种新的,高效的,无模型的算法来纠正SMLM中的漂移.
  • 通过精确跟踪高频漂移来提高SMLM的分辨率.
  • 为改善SMLM数据质量提供一个用户友好的软件解决方案.

主要方法:

  • 适应交叉最大化 (AIM) 算法利用整个数据集信息.
  • 强大的漂移跟踪的无模型方法.
  • 适用于模拟和实验性高通量SMLM数据集.

主要成果:

  • 对于高频漂移,AIM实现了斯特罗姆级的跟踪精度.
  • 在各种成像条件下表现出强大而高效的性能.
  • 在模拟和生物SMLM数据中显著提高分辨率.

结论:

  • AIM有效地将漂移校正错误降到最低,特别是高频漂移.
  • 该方法为SMLM系统提供了即时分辨率增强.
  • AIM是用于标准CPU的计算效率高,可访问的软件解决方案.