A New Generation of Living Buildings Using Hygromorphic Materials
When discussing sustainability in construction, we are used to an approach based on complex technological solutions, expensive sensors, costly materials and, most recently, artificial intelligence. But what if everything we are looking for (in terms of sustainability) could come from the materials themselves, taking advantage of their intrinsic properties, without even relying on electricity? The use of hygromorphic materials offers an innovative perspective and sheds light on little-explored possibilities in the field. These materials can adapt to variations in environmental humidity, changing their shape, size or other physical properties. Examples in nature include wood, hygroscopic proteins such as collagen, polysaccharides such as cellulose and chitin, hygroscopic minerals such as certain salts and silica gel, as well as spores and pollen grains; all of which exhibit the ability to absorb or release moisture in response to changes in humidity. In architecture, researchers have been striving to develop materials, particularly for façades, that can take on a life of their own and make buildings more comfortable naturally.
programming hygromorphic response, open when wet and open when dry, and thicker materials for slow response. Image © Artem Holstov / Newcastle University
When discussing sustainability in construction, we are used to an approach based on complex technological solutions, expensive sensors, costly materials and, most recently, artificial intelligence. But what if everything we are looking for (in terms of sustainability) could come from the materials themselves, taking advantage of their intrinsic properties, without even relying on electricity? The use of hygromorphic materials offers an innovative perspective and sheds light on little-explored possibilities in the field. These materials can adapt to variations in environmental humidity, changing their shape, size or other physical properties. Examples in nature include wood, hygroscopic proteins such as collagen, polysaccharides such as cellulose and chitin, hygroscopic minerals such as certain salts and silica gel, as well as spores and pollen grains; all of which exhibit the ability to absorb or release moisture in response to changes in humidity. In architecture, researchers have been striving to develop materials, particularly for façades, that can take on a life of their own and make buildings more comfortable naturally.
