Oxide materials are emerging as potential candidates for a variety of existing and new optoelectronic and microwave applications. Critical to enabling this development is the need to have high-quality materials and to be able to construct viable heterostructures. The existence of improved metal oxide films has enabled a deeper understanding of both the oxides' intrinsic properties and their potential application in real world electronics. Because of their special properties or combinations thereof, oxide films are leading to new classes of devices as well as potentially replacing common...