Scanning flow cytometer modified to distinguish phytoplankton cells from their effective size, effective refractive index, depolarization, and fluorescence

Luca Fiorani, Valeri P. Maltsev, Vyacheslav M. Nekrasov, Antonio Palucci, Konstantin A. Semyanov, Valeria Spizzichino

Research output: Contribution to journalArticle

8 Citations (Scopus)


A laser flow cytometer based on scanning flow cytometry has been assembled. The unpolarized and linearly polarized light-scattering profiles, as well as the side emitted light in different spectral bands, were measured, allowing the simultaneous and real-time determination of the effective size and the effective refractive index of each spherelike particle. Additionally, each particle could be identified from depolarization and fluorescence measured simultaneously. The tests with aqueous samples of polystyrene spheres, fluorescent or nonfluorescent, and phytoplankton cells demonstrate that the system is able to retrieve size and refractive index with an accuracy of 1% and that the depolarization and fluorescence measurements allow the classification of particles otherwise indistinguishable. © 2008 Optical Society of America.
Original languageEnglish
Pages (from-to)4405 - 4412
Number of pages8
JournalApplied Optics
Issue number24
Publication statusPublished - 20 Aug 2008
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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