Piezoelectric actuators are devices that convert electrical energy into mechanical movement using the piezoelectric effect. This effect occurs in certain materials, such as quartz or ceramics, which change shape when an electric voltage is applied. These actuators are known for their precision and rapid response times, making them ideal for applications in fields like robotics and optics. These actuators can produce small displacements with high force, allowing for fine adjustments in positioning. They are commonly used in microscopes, automotive sensors, and medical devices, where accurate control is essential. Their compact size and reliability further enhance their utility in various technologies.