In:
Royal Society Open Science, The Royal Society, Vol. 7, No. 1 ( 2020-01), p. 191921-
Abstract:
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.
Type of Medium:
Online Resource
ISSN:
2054-5703
Language:
English
Publisher:
The Royal Society
Publication Date:
2020
detail.hit.zdb_id:
2787755-3
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