Microfabricated Air-Microfluidics Virtual Impactor with Groove-Based Envelope-Flow Particle Focusing System

Mahdavipour, Omid; Fahimi, Dorsa; Paprotny, Igor

doi:10.1109/transducers.2019.8808503

Cited by 2 publications

(1 citation statement)

References 2 publications

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“…An inertial element can filter PM 2.5 from PM 10 before the optical sensing stage [ 36 ]. For instance, this can be achieved by fluidic devices like cyclones [ 37 ] or Virtual Impactors (VI) [ 38 ].…”

Section: Introductionmentioning

confidence: 99%

Miniature Optical Particle Counter and Analyzer Involving a Fluidic-Optronic CMOS Chip Coupled with a Millimeter-Sized Glass Optical System

Jobert

Barritault

Fournier

et al. 2021

Sensors

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Our latest advances in the field of miniaturized optical PM sensors are presented. This sensor combines a hybrid fluidic-optronic CMOS (holed retina) that is able to record a specific irradiance pattern scattered by an illuminated particle (scattering signature), while enabling the circulation of particles toward the sensing area. The holed retina is optically coupled with a monolithic, millimeter-sized, refracto-reflective optical system. The latter notably performs an optical pre-processing of signatures, with a very wide field of view of scattering angles. This improves the sensitivity of the sensors, and simplifies image processing. We report the precise design methodology for such a sensor, as well as its fabrication and characterization using calibrated polystyrene beads. Finally, we discuss its ability to characterize particles and its potential for further miniaturization and integration.

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Section: Introductionmentioning

confidence: 99%

Miniature Optical Particle Counter and Analyzer Involving a Fluidic-Optronic CMOS Chip Coupled with a Millimeter-Sized Glass Optical System

Jobert

Barritault

Fournier

et al. 2021

Sensors

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Lab-on-a-Chip Platforms for Airborne Particulate Matter Applications: A Review of Current Perspectives

et al. 2022

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Lab-on-a-Chip (LoC) devices are described as versatile, fast, accurate, and low-cost platforms for the handling, detection, characterization, and analysis of a wide range of suspended particles in water-based environments. However, for gas-based applications, particularly in atmospheric aerosols science, LoC platforms are rarely developed. This review summarizes emerging LoC devices for the classification, measurement, and identification of airborne particles, especially those known as Particulate Matter (PM), which are linked to increased morbidity and mortality levels from cardiovascular and respiratory diseases. For these devices, their operating principles and performance parameters are introduced and compared while highlighting their advantages and disadvantages. Discussing the current applications will allow us to identify challenges and determine future directions for developing more robust LoC devices to monitor and analyze airborne PM.

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Microfabricated Air-Microfluidics Virtual Impactor with Groove-Based Envelope-Flow Particle Focusing System

Cited by 2 publications

References 2 publications

Miniature Optical Particle Counter and Analyzer Involving a Fluidic-Optronic CMOS Chip Coupled with a Millimeter-Sized Glass Optical System

Miniature Optical Particle Counter and Analyzer Involving a Fluidic-Optronic CMOS Chip Coupled with a Millimeter-Sized Glass Optical System

Lab-on-a-Chip Platforms for Airborne Particulate Matter Applications: A Review of Current Perspectives

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