The Droplet That Obeys Voltage: The US Patent

Got something to say to this podcast? Send a voicemail, and you might hear yourself on the next episode! How do you move a tiny droplet across a surface without touching it? In this episode, Elena and Marcus explore a US patent granted in 2014 to Nathan Crane, Pradeep Mishra, and Alex Volinsky: bidirectional electrowetting actuation. By building diodes directly into the electrowetting surface, a droplet glides smoothly and continuously on a single circuit — and reversing the voltage polarity reverses its direction. No electrode switching, no top plate. A story of microfluidics, lab-on-a-chip, and an elegant circuit insight. Note: voices in this episode are AI-generated.