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Nanoscience and Nanotechnology Commons

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Mechanical Engineering

Mechanical Engineering Publications

Microfluidics

2015

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Full-Text Articles in Nanoscience and Nanotechnology

Multi-Pixel Photon Counters For Optofluidic Characterization Of Particles And Microalgae, Pouya Asrar, Marta Sucur, Nicole N. Hashemi Jan 2015

Multi-Pixel Photon Counters For Optofluidic Characterization Of Particles And Microalgae, Pouya Asrar, Marta Sucur, Nicole N. Hashemi

Mechanical Engineering Publications

We have developed an optofluidic biosensor to study microscale particles and different species of microalgae. The system is comprised of a microchannel with a set of chevron-shaped grooves. The chevrons allows for hydrodynamic focusing of the core stream in the center using a sheath fluid. The device is equipped with a new generation of highly sensitive photodetectors, multi-pixel photon counter (MPPC), with high gain values and an extremely small footprint. Two different sizes of high intensity fluorescent microspheres and three different species of algae (Chlamydomonas reinhardtii strain 21 gr, Chlamydomonas suppressor, and Chlorella sorokiniana) were studied. The forward scattering emissions ...