The image shows an innovative wheelchair with new-generation tubeless tires, which are 3D printed and non-pneumatic. These tires have a cellular structure and are made from a special material called TPU95A, which is flexible and strong.

A study on the development of these tires was published in the scientific journal Scientific Reports, and it was conducted by an international team of scientists.

The researchers developed flexible spokes, or FS-NET, using the TPU95A material. They tested the mechanical properties of this material in detail and validated the spoke models using finite element analysis (FE). This analysis showed that the models accurately predicted the behavior of the tire structure.