Aerosolized particle collection and enrichment using stratified two-phase microfluidics for biothreat sensing

Kawkab Ahasan; Nicholas Schnoebelen; Pranav Shrotriya; Todd Kingston

doi:10.1117/12.2663415

20 December 2023 Aerosolized particle collection and enrichment using stratified two-phase microfluidics for biothreat sensing

Kawkab Ahasan, Nicholas Schnoebelen, Pranav Shrotriya, Todd Kingston

Author Affiliations +

Proceedings Volume PC12541, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XXIV; PC125410C (2023) https://doi.org/10.1117/12.2663415
Event: SPIE Defense + Commercial Sensing, 2023, Orlando, Florida, United States

Abstract

Real-time collection and detection are crucial to mitigate airborne biothreats as evidenced during the COVID-19 pandemic. Herein, we numerically and experimentally demonstrate the collection and enrichment of aerosolized polystyrene microparticles using stratified air-water flow in U-shaped and spiral microchannels. Collection efficiencies calculated from multiphase flow simulations show good agreement with the experiment data. The U-shaped channel demonstrates poor particle capture efficiency for submicron particles. To aid this, a two-stage spiral microchannel is designed and fabricated, which shows a 60% higher average particle capture efficiency for submicron particles. Thus, the microchannels enable enrichment and capture of microparticles in sensing-ready solutions.

Conference Presentation

Citation Download Citation

Kawkab Ahasan, Nicholas Schnoebelen, Pranav Shrotriya, and Todd Kingston "Aerosolized particle collection and enrichment using stratified two-phase microfluidics for biothreat sensing", Proc. SPIE PC12541, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XXIV, PC125410C (20 December 2023); https://doi.org/10.1117/12.2663415

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KEYWORDS

Biosensing

Microfluidics

Atmospheric particles

Biological and chemical sensing

Defense and security

Defense technologies

Explosives

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