laser apparatus and methods are provided for synthesizing areas of ceramic substrates or thin films , such ceramics as silicon carbide and aluminum nitride , to produce electronic devices and circuits as integral electron circuit components thereof . circuit components such as conductive tabs , interconnects , wiring patterns , resistors , capacitors , insulating layers and semiconductors are synthesized on the surfaces and within the body of such ceramics . selected groupings and arrangements of these electronic circuit components within the substrates or thin films provide a wide range of circuits for applications such as digital logic elements and circuits , transistors , sensors for measurements and monitoring effects of chemical and / or physical reactions and interactions of materials , gases , devices or circuits that may utilize sensors . the electronic elements and components offer the advantages of providing thermal compatibilities vith the substrate , since they are an integral part thereof and consequently are compatible therewith regarding thermal coefficients of expansion and thermal dissipation .