无标签的图像扫描显微镜用于kHz超分辨率成像和单粒子跟踪
Optics express
|November 29, 2023
概括
我们改进了一种无标签图像扫描显微镜 (ISM),用于更快的2D成像,高达24kHz. 这种光学超分辨率技术使得纳米粒子的跟踪和细菌的成像能够以更高的分辨率进行.
科学领域:
- 光学和光子学 在光学和光子学.
- 显微镜的使用方法
- 生物物理学的生物物理.
背景情况:
- 无标签显微镜通过避免外源标签,为生物成像提供了优势.
- 图像扫描显微镜 (ISM) 提供了增强的分辨率和背景拒绝.
- 高速成像对于观察动态生物过程和跟踪纳米粒子至关重要.
研究的目的:
- 修改一个无标签的图像扫描显微镜 (ISM) 用于高速异步2D成像.
- 为了实现光学超分辨率成像与kHz的率.
- 为了证明该系统对纳米粒子跟踪和活细胞成像的能力.
主要方法:
- 实现了对12kHz单向扫描的共振镜.
- 使用彩色线来即时扫描直角方向.
- 适应光学光子重新分配,以在kHz扫描模式下实现超分辨率.
主要成果:
- 在高达24kHz的率下实现了异步的2D成像.
- 保持了标准ISM的横向分辨率增益和背景拒绝.
- 证明了单个纳米粒子跟踪 (20纳米金,50纳米) 和移动乳酸菌的成像,具有更好的分辨率.
结论:
- 经过修改的ISM系统可以实现高速,无标签,超分辨率的成像.
- 这一进步促进了对动态纳米尺度现象和生物过程的研究.
- 该系统为各种科学领域的先进显微镜应用提供了强大的工具.
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