Starting from three minimal off-shell 4D, N = 1 supermultiplets, using constructions solely defined within the confines of the four dimensional field theory we show the existence of a "gadget"-a member of a class of metrics on the representation space of the supermultiplets-whose values directly and completely correspond to the values of a metric defined on the 1d, N = 4 adinkra networks adjacency matrices corresponding to the projections of the four dimensional supermultiplets.
We investigate the application of time-reversed electromagnetic wave propagation to transmit energy in a wireless power transmission system. "Time reversal" is a signal focusing method that exploits the time reversal invariance of the lossless wave equation to direct signals onto a single point inside a complex scattering environment. In this work, we explore the properties of time reversed microwave pulses in a lowloss ray-chaotic chamber. We measure the spatial profile of the collapsing wavefront around the target antenna, and demonstrate that time reversal can be used to transfer energy to a receiver in motion. We demonstrate how nonlinear elements can be controlled to selectively focus on one target out of a group. Finally, we discuss the design of a rectenna for use in a time reversal system. We explore the implication of these results, and how they may be applied in future technologies.
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