A new invention called the “morphing wheel” has been created by the Korea Institute of Machinery and Materials (KIMM). This wheel is designed to handle obstacles up to 1.3 times its radius, such as curbs, bumps, and stairs. Inspired by the way water droplets change shape, the wheel can switch between solid and fluid states to overcome challenges. It is expected to improve mobility for wheelchairs, delivery vehicles, and robots. In August, the invention was featured on the cover of Science Robotics. Lead researcher Song Sung-hyuk explained that the wheel could reach speeds up to 100 kilometers per hour, matching the speed of a typical car. Unlike current wheels, including airless tires, this wheel offers unmatched adaptability.

The wheel’s design includes a chain-like outer hoop and spoke wires connecting it to the center hub. A sensor adjusts the spokes’ stiffness in real-time, enabling the wheel to adapt to different terrains. KIMM tested the wheel on a prototype wheelchair, which climbed stairs 18 centimeters high while carrying a life-size dummy. It also stayed stable at speeds up to 30 kilometers per hour. The researchers hope to use the wheel in industrial robots and military machines. This innovation could transform transportation and robotics, offering stronger, more efficient, and more versatile mobility solutions for various industries.