4D printing is the process of using 3D printing to create objects that can change their shape over time. This technology has the potential to revolutionize the way we manufacture products, as it allows for greater flexibility and customization. 4D printing could be used to create everything from medical implants to furniture, and it has already been used to create a self-folding chair.
One of the emerging trends in 4d printing is the use of shape-changing materials. These materials can be printed into a variety of shapes and then programmed to change shape in response to stimuli such as heat, light, or moisture. This technology has a wide range of potential applications, from medical implants that change shape to adapt to the body to smart packaging that changes shape to indicate when a product is damaged.