Large displacement plastic deformation process for silicon parasol structure

A large displacement silicon parasol structure has been realized using a developed two-step silicon plastic deformation process. This process consists of three key processes: first, plastic deformation at high temperature and applying a load from one side; second, two-step plastic deformation for large displacement and third, canopy release after plastic deformation. Accordingly, the silicon parasol structure with a diameter of 30 mm and a curvature radius of 100 mm can be fabricated by the developed plastic deformation process.