期刊
JOURNAL OF INNOVATIVE OPTICAL HEALTH SCIENCES
卷 12, 期 3, 页码 -出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S1793545819500147
关键词
Structured illumination; super-resolution; digital micromirror device; fringe pattern; modulation depth
资金
- National Key Technologies R&D Program of China [2018YFC0114800, 2017YFC0109900]
- Natural Science Foundation of China (NSFC) [61405238]
- Natural Science Foundation of Jiangsu Province [BK20141206]
- Key Technologies R&D Program of Jiangsu Province [BE2018666]
Structured illumination microscopy (SIM) is a promising super-resolution technique for imaging subcellular structures and dynamics due to its compatibility with most commonly used fluorescent labeling methods. Structured illumination can be obtained by either laser interference or projection of fringe patterns. Here, we proposed a fringe projector composed of a compact multi wavelength LEDs module and a digital micromirror device (DMD) which can be directly attached to most commercial inverted fluorescent microscopes and update it into a SIM system. The effects of the period and duty cycle of fringe patterns on the modulation depth of the structured light field were studied. With the optimized fringe pattern, 1.6x resolution improvement could be obtained with high-end oil objectives. Multicolor imaging and dynamics of subcellular organelles in live cells were also demonstrated. Our method provides a low-cost solution for SIM setup to expand its wide range of applications to most research labs in the field of life science and medicine.
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