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Updated: Jan 14, 2026

Mapping Absolute DNA Density in Cell Nuclei using Single-molecule Localization Microscopy

Mapping Absolute DNA Density in Cell Nuclei using Single-molecule Localization Microscopy

Published on: November 11, 2025

在光显微镜中实现原子精确定位的贝叶斯式方法

Yuqin Duan¹, Qiushi Gu², Hanfeng Wang²

¹Research Laboratory of Electronics, MIT, 50 Vassar Street, Cambridge, MA, 02139, USA. sophiayd@mit.edu.

Nature communications

|October 21, 2025

概括

研究人员开发了一种新技术,即离散网格成像 (DIGIT),以克服超分辨率显微镜的限制. 通过利用原子格子结构来实现量子和生物系统的增强成像,DIGIT实现了安格斯特罗姆级精度.

科学领域:

物理物理学物理
光学显微镜的使用方法
量子技术量子技术是一种量子技术.

背景情况:

超分辨率显微镜在成像复杂系统时超过了阿贝衍射极限.
单分子定位显微镜 (SMLM) 达到纳米精度,但面临着局限性.
将SMLM改进到安格斯特罗姆级分辨率需要大幅增加光子收集,这往往是不切实际的.

研究的目的:

克服SMLM解决方案增强的基本障碍.
开发一种技术,在光学成像中实现安格斯特罗姆级精度.
为了实现量子和生物系统中原子特征的直接光学分辨率.

主要方法:

利用原子格子结构的周期性.
使用离散网格成像技术 (DIGIT).
使用量子发射器系统和大型量子发射器阵列.

主要成果:

观察到超出原子格子常数的局部化不确定性的指数式崩.
通过广场成像,证明了发射器在大型阵列中的平行定位.
实现了安格斯特罗姆级精度,打破了以前的分辨率障碍.

结论:

DIGIT克服了SMLM的二次性资源扩展限制.
该技术为前所未有的测量精度提供了具有竞争力的工具.
DIGIT为各种系统中原子特征的直接光学分辨率铺平了道路.

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