Magnetic 3D-printed structures crawl, roll, and jump

Engineers have created soft, 3D-printed structures whose movements can be controlled with a wave of a magnet, much like marionettes without the strings. The menagerie of structures that can be magnetically manipulated includes a smooth ring that wrinkles up, a long tube that squeezes shut, a sheet that folds itself, and a spider-like ‘grabber’ that can crawl, roll, jump, and snap together fast enough to catch a passing ball.
Magnetic 3D-printed structures crawl, roll, and jump

A nanotech sensor that turns molecular fingerprints into bar codes

A new system can detect and analyze molecules without the need for an infrared spectrometer. The system uses nanostructured metapixels to detect and then translate molecules’ unique signatures into bar codes. The technology can be integrated into a compact sensor chip. It opens the door to large-scale image-based detection of materials using machine-learning technology.
A nanotech sensor that turns molecular fingerprints into bar codes