The team created a scalable process that rolls flat, two-dimensional MXene sheets into ultra-thin tubular structures known as MXene nanoscrolls. These scrolls are about 100 times thinner than a human hair and conduct electricity more efficiently than their flat counterparts. However, producing high-quality one-dimensional MXene structures has remained a challenge until now. While flat structures work well in many systems, one-dimensional forms offer advantages in applications that require fast transport or mechanical reinforcement. The team tested the method on six different MXenes, including titanium carbide, niobium carbide, vanadium carbide, tantalum carbide, and titanium carbonitride.