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Weather-responsive adaptive shading through biobased and bioinspired hygromorphic 4D-printing
Tiffany Cheng1,2, Yasaman Tahouni3,4, Ekin Sila Sahin3,4
1Institute for Computational Design and Construction (ICD), University of Stuttgart, Stuttgart, Germany. tiffany.cheng@icd.uni-stuttgart.de.
Nature Communications
|November 28, 2024
Summary
Bioinspired 4D-printing with cellulosic materials creates adaptive building shading. This energy-autonomous solution responds to weather, reducing carbon emissions and improving indoor climate control.
Area of Science:
- Materials Science
- Biomimetics
- Sustainable Architecture
Background:
- Global need to reduce building energy consumption for climate control.
- Cellulose as a sustainable, hygromorphic material.
- 4D-printing enables complex, responsive structures.
Purpose of the Study:
- Investigate biobased cellulosic materials and 4D-printing for adaptive facade shading.
- Evaluate material response to environmental stimuli.
- Demonstrate scalability and real-world applicability.
Main Methods:
- 4D-printing of hygromorphic cellulosic bilayers.
- Testing motion response to temperature and humidity.
- Long-term (1+ year) performance evaluation under various weather conditions.
- Upscaling for real building facade deployment.
Main Results:
- Demonstrated weather-responsive motion of 4D-printed hygromorphic bilayers.
- Verified functionality of self-shaping shading elements in diverse conditions.
- Successfully scaled the manufacturing process for architectural application.
Conclusions:
- Hygromorphic bilayers are viable for weather-responsive facades.
- Bioinspired 4D-printing offers a resource-efficient, energy-autonomous adaptive shading solution.
- Potential to contribute to indoor climate regulation and climate change mitigation.
