Yingchao Meng

1 Introduction Indoor air quality has become an increasingly important issue since humans spend now between 80% and 90% of their time on indoor activities.[1] Airborne bioaerosols, including bacteria, fungi, and viruses pose threats to human health through both respiratory and heart diseases.

MATERIALS AND METHODS Microfluidic devices were fabricated using standard soft lithographic techniques. First, microchannel patterns were designed in AutoCAD 2018 (Autodesk, San Rafael, USA) and printed onto a high-resolution film photomask (Micro Lithography Services, Chelmsford, UK). A 55-μm-thick resist layer (SU-8 3050, MicroChem, Westborough, USA) was coated onto a silicon wafer.