Detecting chemicals, measuring strain with a pencil and paper: Sometimes solving a problem doesn't require a high-tech solution. Sometimes, you have to look no farther than your desktop.
Three students from Northwestern University's McCormick School of Engineering—an undergraduate, a master's student, and their teaching assistant—have proven that pencils and regular office paper can be used to create functional devices that can measure strain and detect hazardous chemical vapors.
7 years ago
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