Enhanced terahertz radiation directivity via a conical horn antenna from on-chip spintronic emitters.

A circular waveguide-fed conical horn antenna is fabricated using two-photon lithography (TPL) and integrated with a spintronic terahertz radiation emitter source to provide enhanced radiation directivity. In comparison to the bare terahertz radiation source, incorporating the antenna permits a spectral density gain up to 20.5 dB.

Self-efficacy latent growth trajectories' longitudinal links with achievement and interest: Both baseline and growth rate are important for interest outcomes.

Background: Self-efficacy beliefs have well established theoretical and empirical linkages to persistence and achievement. Budding theoretical and recent empirical research has worked to connect self-efficacy to interest. Building on research in these areas, burgeoning research has begun to examine the relative role of intercept and slope of self-efficacy for these learning outcomes.