Abstract: Apparatus, packaging, and methods of manufacture of an integrated circuit are provided. The integrated circuit includes a component of a first type fabricated on a first substrate containing a first material, and a component of a second type fabricated on a second substrate containing a second material. The first material has better compatibility than the second material with fabrication and/or performance of the component of the first type, while the second material has better compatibility than the first material with fabrication and/or performance of the component of the second type. Also described, is a method of making the above-mentioned integrated circuit, the method including, among other steps, the step of disposing the first and second substrates opposite one another, and the step of establishing an electrical connection between the components.