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Dox sent in this article from Wired Science about this “lab on a chip” –

A young professor has used her favorite childhood toy, a laser printer, and a toaster oven to make microfluidic devices – tiny computer chips with plumbing that are usually fabricated in multimillion dollar labs.

When she began working at the University of California Merced last year, Michelle Khine was eager to get started with her research, but stuck without sophisticated equipment.

In an act of desperation, she turned to Shrinky Dinks– plastic sheets that get smaller when they are baked in a household oven.

– Hack: Young Professor Makes Lab-on-a-Chip with Shrinky Dink and Toaster Oven – Link & more.