Dual photoinitiated nanocomposite-ink printing

A method for forming a heterogeneous or gradient dielectric-property element comprises: (a) providing a plurality of solution-based feedstocks, each including an organic matrix, wherein at least one of the feedstocks includes a nanoparticle filler dispersed within the organic matrix, the feedstocks comprising a first ink having a first photosensitive entity and one or more additional feedstocks having other photosensitive entities, the first and subsequent feedstocks having at least one different photosensitization absorption band, such that spectrally discrete exposure results in different degrees of curing; (b) providing an electromagnetic (EM) source configured to polymerize one or more of the feedstocks; (c) depositing the feedstocks in a plurality of layers; and (e) curing at least a portion of the plurality of feedstocks, wherein deposition and subsequent curing results in regions where complex dielectric properties are different within or between at least one of the plurality of layers.