Quantitative phase contrast microscopy in turbid microfluidic channels by digital holography
Anno: 2012
Autori: Bianco V., Paturzo M., Finizio A., Memmolo P., Puglisi R., Balduzzi D., Galli A., Ferraro P.
Affiliazione autori: CNR—National Institute of Optics, Via Campi Flegrei, 34, I-80078, Pozzuoli (NA), Italy;
Center for Advanced Biomaterials for Health Care @CRIB, Istituto Italiano di Tecnologia, P.le Tecchio, 80, 80125, Napoli, Italy;
Istituto Sperimentale Italiano “Lazzaro Spallanzani”, Località La Quercia, 26027—Rivolta d’Adda, Cremona, Italy.
Abstract: Clear coherent imaging through turbid media is a challenging task showing potentialities in the newest applications in microfluidics. If the targets of interest are dipped into turbid fluids, the medium particles act as strong scatterers, resulting in speckle noise and hindering a clear vision by conventional Optics. Conversely, Digital Holography is able to overcome this limit in case of both flowing and quasi-static media. If the liquid flows at sufficient speed into the microfluidic channel, the Doppler effect can be exploited to record the only useful information. In the quasi-static case, a method is proposed to reduce the speckle noise by processing multiple holograms. Experiments have been carried out to show that a clear amplitude and phase-contrast mapping is achievable by speckle reduction while preserving the image resolution.
Giornale/Rivista: PROCEEDINGS OF SPIE
Volume: 8413 Da Pagina: 84131V A: 84131V
Parole chiavi: Optics; Digital Holography; Turbid media; Imaging; DOI: 10.1117/12.2007273Citazioni: 1dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-04-21Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui