基于芯片的无标签不连贯超分辨率光学显微镜
Nikhil Jayakumar1, Luis E Villegas-Hernández2, Weisong Zhao3
1Department of Physics and Technology, UiT The Arctic University of Norway, Tromsø, 9037, Norway. nik.jay.hil@gmail.com.
Light, science & applications
|August 3, 2025
概括
研究人员开发了Evanescently衰变的光发光散射使无标签光学纳米镜 (EPSLON) 能够用于无标签超分辨率显微镜. 这种技术克服了无需样本标记的衍射极限,使得自然生物成像成为可能.
科学领域:
- 光学和光子学 在光学和光子学.
- 生物物理学的生物物理.
- 显微镜的使用方法
背景情况:
- 超分辨率显微镜利用光分子绕过光学衍射极限.
- 标记生物样本可以干扰微妙的细胞过程.
- 现有的无标签方法与分散光相干性作斗争,阻碍了超分辨率应用.
研究的目的:
- 开发一种超高分辨率的无标签显微镜技术,克服衍射极限.
- 为了使生物样本在它们的原始状态下进行成像,而无需外源标签.
- 适应现有的超高分辨率方法,用于无标签的成像.
主要方法:
- 利用化波导的光发光 (PL) 进行近场照明.
- 使用Evanescently衰变的光发光散射使无标签光学纳米镜 (EPSLON) 成为可能.
- 展示模仿纳米尺寸光分子的照明特性,以实现不连贯性.
主要成果:
- 在纳米珠上实现了~180nm的两点分辨率.
- 在使用富里埃环相关性 (FRC) 的衍射极限上观察到1.9×到2.8×的分辨率改进.
- 在各种生物样本上验证了该技术.
结论:
- 通过产生不连贯的照明,EPSLON可以实现远场,无标签的超高分辨率成像.
- 该技术允许在没有标签的情况下应用结构化照明显微镜 (SIM) 和基于强度波动的光学纳米镜 (IFON) 等方法.
- 对于研究没有外源标签的生物系统来说,EPSLON代表了一项重大进展.
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