期刊
LAB ON A CHIP
卷 12, 期 17, 页码 3073-3076出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2lc40114b
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资金
- Ministero delle Politiche Agricole e Forestali [SESSIBOV 9106/7303/2009]
- PON project MONICA
- MIUR (Italian Ministry of Education, University and Research)
We show that sharp imaging and quantitative phase-contrast microcopy is possible in microfluidics in flowing turbid media by digital holography. In fact, in flowing liquids with suspended colloidal particles, clear vision is hindered and cannot be recovered by any other microscopic imaging technique. On the contrary, using digital holography, clear imaging is possible thanks to the Doppler frequency shift experienced by the photons scattered by the flowing colloidal particles, which do not contribute to the interference process, i.e. the recorded hologram. The method is illustrated and imaging results are demonstrated for pure phase objects, i.e. biological cells in microfluidic channels.
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