Responsive materials refer to materials that can respond to external stimuli such as temperature, light, pH, or mechanical force by changing their properties or behavior. These materials have the ability to reversibly alter their shape, size, or structure in response to specific triggers. This field of research is interdisciplinary, drawing from chemistry, physics, materials science, and engineering, and has applications in various industries such as medicine, textiles, electronics, and energy storage. Responsive materials have the potential to revolutionize fields such as drug delivery, sensors, actuators, and smart textiles by providing dynamic and adaptive functionalities.