Sensors small enough to disappear into the body, microrobots that move without wires, and smart systems hidden inside ...

Figure 1: an illustration of how the micrometer-scale hydrogel actuators work. a. When an external electric field is applied, water inside the soft hydrogel moves through its internal network, causing ...

Electrical engineers at Duke University have demonstrated the ability to print fully functional and recyclable electronics at sub-micrometer scales. The technique could impact the more than $150 ...