Hydrogel superglue is 90 percent water

Engineers have developed a method to make synthetic, sticky hydrogel that is more than 90 percent water. The hydrogel, which is a transparent, rubber-like material, can adhere to surfaces such as glass, silicon, ceramics, aluminum, and titanium with a toughness comparable to the bond between tendon and cartilage on bone.
Hydrogel superglue is 90 percent water

Robotic worm for head surgery can cut around corners

Removing tumors from within the inner ear is a very delicate matter that typically requires surgeons to remove the entire mastoid bone. However, in the future, all doctors will need to do is cut a tunnel of 5 mm in diameter through the bone using a miniature robot named NiLiBoRo. The system is capable of adjusting its path while drilling through bone to steer around sensitive tissue such as blood vessels and nerves.
Robotic worm for head surgery can cut around corners