Scientists Create Laser “Whirlpools” That Spin Tiny Cells Without Touching Them

Karlsruhe Institute of Technology researchers developed a laser-based, contact-free way to rotate microscopic samples in 3D.

The method heats liquid around tiny objects, creating spiral fluid flows that spin cells and other samples without physical tools.

It could improve delicate sample handling and help produce sharper 3D biological images.

Potential applications include micromanipulation, microrobotics, and nanoscale manufacturing.