<p>➀ Researchers at Cornell University have developed a method to convert symmetric semiconductor particles into chiral materials, which can enhance light-polarization control in films.</p><p>➁ Chiral materials can rotate polarized light, and this study utilizes cadmium-based semiconductor compounds to achieve this effect.</p><p>➂ The research shows that by controlling the drying geometry, the structure and chirality of the film can be controlled, leading to films with high light-matter interaction strength.</p>