期刊
NANO LETTERS
卷 19, 期 8, 页码 4827-4835出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.9b01822
关键词
Rayleigh scattering; interferometric microscopy; iSCAT; extinction; protein sensing
类别
资金
- Alexander von Humboldt Foundation
Fluorescence microscopy has been the work-horse for investigating optical phenomena at the nanometer scale but this approach confronts several fundamental limits. As a result, there have been a growing number of activities toward the development of fluorescent-free imaging methods. In this Mini Review, we demonstrate that elastic scattering, the most ubiquitous and oldest optical contrast mechanism, offers excellent opportunities for sensitive detection and imaging of nanoparticles and molecules at very high spatiotemporal resolution. We present interferometric scattering (iSCAT) microscopy as the method of choice, explain its theoretical foundation, discuss its experimental nuances, elaborate on its deep connection to bright-field imaging and other established microscopies, and discuss its promise as well as challenges. A showcase of numerous applications and avenues made possible by iSCAT demonstrates its rapidly growing impact on various disciplines concerned with nanoscopic phenomena.
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