Tiny forces, big effects: How particle interactions control the flow of soft materials

Sitting in a restaurant, you reach for the ketchup bottle, eyeing the basket of fries in front of you. You give the bottle a ...

Optical meta‑conveyors enable programmable nanomanipulation along arbitrary open paths

The task of gently transporting a microscopic particle from one point to another along a winding path, and then bringing it back using nothing more than a single, compact chip is a challenge we set ...