NYU Scientists Create Hand-Sized Levitating Time Crystals

Scientists just turned ordinary packing material into something extraordinary that challenges the very laws of physics.

Researchers at New York University discovered a new type of time crystal using styrofoam beads suspended in midair by sound waves. Unlike previous time crystals that were microscopic and short-lived, this one is big enough to hold and stable enough to study in real time.

Time crystals are atomic arrangements that move in repeating patterns over time, breaking traditional rules of physics. Nobel laureate Frank Wilczek first proposed the idea in 2012, but scientists struggled to create versions with practical applications.

The NYU team's innovation changed that. They placed styrofoam beads between speakers arranged in a six-inch frame, letting sound waves hold the beads in place. When multiple beads float together, they scatter sound waves and harvest energy from them, creating a self-sustaining system that picks its own rhythm without any outside instructions.

What makes this discovery remarkable is how it violates Newton's third law of motion. That law says when two objects push on each other, they must push with equal force in opposite directions. Lead researcher Mia Morrell compared it to two ferries of different sizes approaching a dock, each making waves that push the other around differently based on their size.

"This was a discovery in the truest sense," said David G. Grier, the study's senior author. "Perhaps the most remarkable thing is that such rich and interesting behavior emerges from such a simple system."

The Bright Side

The simplicity of this setup could make it the foundation for understanding time crystals across countless applications. Grier believes studying this basic model could reveal insights into how natural clocks emerge in complex systems, from neural pacemakers in our hearts to cyclic trends in financial markets.

Previous time crystals required extreme laboratory conditions and lasted only brief moments. This version uses common materials and maintains stability, making it accessible for researchers worldwide to study and build upon.

The team published their findings in Physical Review Letters, opening the door for other scientists to explore practical uses. What started as an impossible theoretical idea a decade ago is now something you could literally hold in your hands.

Sometimes the biggest breakthroughs come from the simplest materials floating on waves of sound.