Flexible electronics are electronic devices built on bendable, stretchable, or foldable substrates, such as plastic, metal foil, or paper, instead of traditional rigid silicon wafers. This technology enables the creation of lightweight, thin, and versatile devices that can conform to various shapes and surfaces. Common applications include wearable sensors, flexible displays, electronic skin, and smart packaging. The flexibility allows for innovative product designs and integration into everyday objects, expanding the possibilities for electronics in healthcare, consumer products, and industrial uses.