They are usually soft and weak, but can be made hard and tough. Hydrogels are gels that have water as their main constituent. A multiple particle tracking method was used to track probe particles ...

Now, researchers from Tokyo University of Science have used alginate from seaweed washed ashore, CaCO3, and carbonated water ...

Most contact lenses today are made of soft polymers like hydrogels — water-loving materials that retain moisture. So, ...