Optomechanics at the nanoscale involves the integration of nano-optical components with nanomechanical resonators. When light interacts with a nanomechanical device, it can exert forces that cause the mechanical structure to move. Conversely, the motion of the mechanical structure can affect the properties of the light, such as its frequency or phase. This bidirectional interaction is harnessed for various applications, including the development of optomechanical sensors and quantum transducers.