Engineers have developed a bio-compatible ink that solidifies into different 3D shapes and structures by absorbing ultrasound waves. Because the material responds to sound waves rather than light, the ...

Our bodies are constantly breaking down. Over time, their built-in repair mechanisms also fail. Knee cartilage grinds away. Hip joints no longer support weight. Treatments for breast cancer and other ...

In order to keep surgeries minimally invasive, it would be great if implants could be injected into the body in liquid form, then solidified once in place. Well, a new ultrasound-based 3D printing ...