期刊
ROYAL SOCIETY OPEN SCIENCE
卷 7, 期 1, 页码 -出版社
ROYAL SOC
DOI: 10.1098/rsos.191921
关键词
algae; phase-microscopy; three-dimensional printing; open access
资金
- Royal Society [CHG/R1/170017, URF/R/180017]
- Royal Society University Research Fellowship
Phase microscopy allows stain-free imaging of transparent biological samples. One technique, using the transport of intensity equation (TIE), can be performed without dedicated hardware by simply processing pairs of images taken at known spacings within the sample. The resulting TIE images are quantitative phase maps of unstained biological samples. Therefore, spatially resolved optical path length (OPL) information can also be determined. Using low-cost, open-source hardware, we applied the TIE to living algal cells to measure their effect on OPL. We obtained OPL values that were repeatable within species and differed by distinct amounts depending on the species being measured. We suggest TIE imaging as a method of discrimination between different algal species and, potentially, non-biological materials, based on refractive index/OPL. Potential applications in biogeochemical modelling and climate sciences are suggested.
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