Kinetic Façade Design with Eshelby Twist for Sunlight Exposure Reduction

This research focuses on interpreting the Eshelby twist behavior into kinetic façade design, which is a continuous crystallographic twist generated by the torsional force of an axial screw dislocation in a one-dimensional nanowire structure. The mechanism can be adjusted to the kinetic façade, changing dynamically rather than being static or fixed and allowing movement to occur on a building's surface with the potential to reduce sunlight exposure. Natural light is essential for making human work in building spaces more productive. The solution to the issue of inappropriate natural light in indoor spaces is a kinetic façade, which is self-adjustable according to sunlight intensity. The simulation results before and after installing the façade show the sunlight exposure value were 2030 kWh/m² and 300 kWh/m² per year, respectively. 2030 kWh/m², this value is too excessive for direct sunlight for users living in the space. As a result, the sunlight exposure value after installation is acceptable for users; it is verified that the proposed design can strongly decrease sunlight exposure. These findings indicate that the Eshelby twist is the principal phenomenon facilitating façade movement.