Plantic

Plantic is a fictional plant-based material introduced in the novel "The Martian" by Andy Weir. In the context of the story, Plantic is developed by the Ares III mission's botanist, Mark Watney, as a crucial component for his survival on Mars. It is described as a versatile and durable material derived from plant matter, specifically engineered to be lightweight and strong.

Watney utilizes Plantic in several key ways to overcome the challenges of his isolated situation. He initially uses it to construct a makeshift habitat expansion, creating a larger, more secure living space within the Hab. The material's ability to be molded and sealed is essential for this purpose, allowing him to join sections and maintain a breathable atmosphere.

Furthermore, Plantic plays a role in Watney's food production efforts. While not directly edible, it is used in the construction of his potato farm, serving as lining or structural elements for the growing environment. Its inert properties are important to ensure it does not interfere with the delicate Martian soil and crop cultivation. The development and application of Plantic highlight Watney's ingenuity and his reliance on scientific principles and innovative material usage to survive against overwhelming odds.