David R. Smith

TL;DR: In this article, the authors demonstrate strong cross-phase modulation and four-wave mixing in a chiral metamaterial, highlighting the interplay of nonlinearity and circular dichroism and show that the magnitude of the nonlinear parametric interaction follows certain selection rules regarding the circular polarizations of the various interacting waves.

TL;DR: In this article, a frequency-diverse cavity-backed metasurface was proposed for high-resolution polarimetric imaging using a single transceiver and frequency sweep over the operational microwave bandwidth.

TL;DR: In this paper, the authors described how indirect holographic techniques, previously applied to the determination of antenna radiation patterns, can be adapted for the imaging of passive objects, and provided details of how complex scattered field values can be obtained in a simple and inexpensive manner.

TL;DR: In this article, a multi-slot loaded radiating PIFA element consisting of W-L shaped slots stacked with a polycrystalline silicon (poly-Si) solar cell operating as a parasitic patch element enables the proposed solar PIFA to operate at the center frequency bands of 1.8, 2.4, 3.4 and 5.8 GHz with measured impedance bandwidths of 16.7, 9.16, 7.65, and 3.45%, respectively.

TL;DR: Monocular OKN was symmetrical in normal subjects for the proportion and duration measures, but half the normal group showed small but significant asymmetries for the beats measure, and subjects in both enucleate and strabismic groups showed asymmetry of OKN favouring nasally directed stimulation.