Mechanical resonators are devices that vibrate at specific frequencies when energy is applied. They can be found in various forms, such as strings, membranes, or beams, and are used in applications like musical instruments and sensors. The frequency at which they resonate depends on their physical properties, such as size, shape, and material. These resonators play a crucial role in technology, including microelectromechanical systems (MEMS) and atomic clocks. In MEMS, mechanical resonators help in sensing and actuation, while in atomic clocks, they contribute to precise timekeeping by stabilizing frequencies. Their ability to amplify signals makes them essential in many electronic devices.