Mobile dark-field microscope image analysis for biomolecule quantification is feasible upon mating an LED light source, a dark-field condenser and a 20× objective lens to a mobile phone camera. This system can achieve performance analogous to that of a standard dark-field microscope, allowing the use of stable, nanoparticle-based quantitation assays in resource-limited areas where standard assay approaches are not practical.
Dali Sun and Ye Hu, "A low cost mobile phone dark-field microscope for nanoparticle-based quantitative studies," Proc. SPIE 10486, Design and Quality for Biomedical Technologies XI, 104860W (Presented at SPIE BiOS: January 28, 2018; Published: 14 March 2018); https://doi.org/10.1117/12.2295853.5751449027001.
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