Fig. 2: Coronavirus-inspired microchannel and the rapid collection of breath sample and blow sample. | Nature Communications

Fig. 2: Coronavirus-inspired microchannel and the rapid collection of breath sample and blow sample.

From: Wireless, battery-free, multifunctional integrated bioelectronics for respiratory pathogens monitoring and severity evaluation

Fig. 2: Coronavirus-inspired microchannel and the rapid collection of breath sample and blow sample.The alternative text for this image may have been generated using AI.

a Structure diagram of the coronavirus involving the envelope, spike protein, membrane protein, and inner space for storing genes. b Structure diagram of the coronavirus-inspired microchannel with the inlet, outlet, air channel and reservoir chamber. c Picture of a transparent PDMS microchannel marked using red ink. d, e Surface morphology and hydrophobic property of the microchannel, respectively. The contact angle (θ) of water on PDMS surface is 100°. Scale bar is 20 μm. f, g Pressure simulation and the correlation of the pressure and air velocity with different inlet numbers from 2 to 13, respectively. h, i Pressure simulation and the correlation of pressure and air velocity with different outlet lengths from 1 mm to 11 mm, respectively. j, k Pressure simulation and the correlation of pressure and air velocity with different outlet widths from 0.3 mm to 3 mm, respectively. l Demonstration of aerosol collection using the optimized microchannel. m Collection speed of aerosols using an atomizer. n, o Collection speed of aerosols by human breath and blow, respectively. Source data are provided as a Source Data file.

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