Viziv Wireless Power Transfer Evaluation

This report provides an independent Sandia evaluation of Viziv Technologies’ proposed long-range wireless power-transfer system based on a Zenneck, or Sommerfeld-Zenneck, surface wave propagating along an interface. The work examines the physical basis of the claimed surface-wave mechanism, reviews prior test data supplied by Viziv, and develops a Sandia test methodology for characterizing the electromagnetic fields produced by the system and determining whether the observed behavior is consistent with the properties expected of a guided surface wave. The evaluation focuses on the quality and propagation behavior of the generated wave because those characteristics determine whether the concept could offer practical advantages for transmitting power over long distances. By combining independent measurements with analysis of the earlier Viziv data, the report establishes a technical basis for assessing both the claimed Zenneck-wave behavior and the broader feasibility of the technology for wireless power transfer. The study is therefore an engineering evaluation of the underlying propagation concept and available experimental evidence rather than an assumption that long-range performance follows from the theoretical mechanism alone.