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Eight figures, labeled from “a” to “h,” show the evolution of the design. The figure starts very rectangular and simple, and then more elements are added until it becomes rectangular with a complex lattice.

Lightweight and inexpensive, miniaturized mass filters are a key step toward portable mass spectrometers that could identify unknown chemicals in remote settings.

The one-step fabrication process rapidly produces miniature chemical reactors that could be used to detect diseases or analyze substances.

Researchers 3D print components for a portable mass spectrometer

Scientists 3D print self-heating microfluidic devices