Researchers have created biocompatible, biodegradable and edible fiber from natural gel that has many medical uses.
As the main material for opticalfiber, a team of scientists from the University of Campinas used regular agar-agar, made from seaweed. The wire they created with a diameter of 2.5 mm has six cylindrical holes of 0.5 mm each along the internal axis. They are located around a solid core and prevent light scattering due to the difference between refractive indicesgel and air.
The waveguide parameters can be adjusted by changing the composition of natural gelatin, the shape and size of the cores for the holes when pouring.
Tests have shown that the gel undergoesstructural changes under the influence of temperature, humidity and pH. This allows it to be used for optical sensing, the creation of biocompatible optical sensors, disposable Petri dishes, various devices for operations, research, and localized drug delivery.
Scientists are experimenting with other materials, for example, recently the Finns made fiber from cellulose.
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