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Microfluidic chips have made it possible to manipulate biological fluidic samples in increasingly smaller volumes—even enabling multiplexed study of individual cells. Performing biological assays using microfluidic technology not only makes them more portable when compared to their traditional counterparts, but also decreases testing time and cost. These biofluidic circuits vary widely in design and function: multiplexed cell electroporation, on-chip cell culturing, cell-cell communication monitoring, protein crystallization, and small volume sample analysis are only a few examples of potential applications. The rapid rate of growth and change in this field creates a need for inexpensive and flexible rapid prototyping of microfluidic chips.