Figure 3

Concentration of E. coli sample through droplet centrifugation A1-A4). Centrifugation snapshots. Pulse-width-modulated (PWM) control of vibration motor induces circular motion path of droplet. B) Concentration of E. coli in 10 μL sample before and after droplet centrifugation revealing a 3.06 fold increase in mean concentration after 3 min.