Monolithic microfabricated valves and pumps by multilayer soft lithography.

By M. Unger, H. Chou, Todd Thorsen, Axel Scherer, Stephen R. Quake. Science, 2000

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A fast, robust, and tunable synthetic gene oscillator (2008, methodology): “All described devices were fabricated in the UCSD Integrated Technology Lab (ITL) and the Calit2 Nano3 facility using standard soft lithography techniques (Duffy et al. 1998; Unger et al. 2000; Whitesides et al. 2001; Sia and Whitesides 2003).”
Determining the optimal PDMS–PDMS bonding technique for microfluidic devices (2008, background): “Unger et al reported a bonding technique that relied on using a sticky layer with less cross-linking agent that would be combined with a hard cross-linked layer [4].”
A soft, bistable valve for autonomous control of soft actuators (2018, methodology): “These designs use Quake-type valves, in which elastomeric membranes block or permit flow through channels depending on an applied input pressure (27).”
Direct, one-step molding of 3D-printed structures for convenient fabrication of truly 3D PDMS microfluidic chips (2015, background): “2008), peristaltic valve (Unger et al. 2000; Thorsen et al. 2002; Liu et al. 2003) and 3D chaotic advective mixer (Liu et al.”