With 4D printing, the objects can change shape or properties using external stimuli such as temperature, light, pH, magnetic field, electricity, and moisture. Additionally, the changes in shape or ...

Combining materials with different swelling ratios creates structures that transform into tubes when exposed to water. (Courtesy: Yu Bin Lee) Materials that controllably change shape over time – often ...

I’m hesitant to describe a virtual reality experience as a “killer app” ever again, but I’m oh-so-tempted once more. I just emerged from a glimpse into the fourth dimension by way of a VR experience, ...