Whether somber or whimsical, masks are transformation devices: you put one on and you assume a new identity, one that can radiate supernatural energy.
The importance of the theme of metamorphosis is more apparent than real; passion is the essential theme of the poem, and passion imparts more unity to the work than do the transformation devices employed by Ovid.
In this paper, we have reviewed the recent progress on the parametric design of transformation devices, such as invisibility cloaks, electromagnetic (EM) concentrator, EM-wave converter, etc.
Therefore, international cooperation is required to unify network codes, planning standards, energy transformation devices and information system interfaces.
Therefore, high-efficiency energy transformation devices and the interaction pathways they enable between different energy systems should be studied in depth, especially low-cost P2G technologies and impacts.
All other resonators are employed as nonlinear input-output transformation devices and therefore a high bandwidth (corresponding to much lower loaded quality factor) is necessary for achieving a high bit rate.
In the Energy Internet, different energy systems are coupled through energy transformation devices (e.g., micro-turbine, electric vehicle (EV), power to gas (P2G), or vehicle to grid (V2G)).
Such a transformation optics device can concentrate the current into a designed central region and enhance the current density inside.
Shin, D; Urzhumov, Y; Lim, D; Kim, K; Smith, DR, A versatile smart transformation optics device with auxetic elasto-electromagnetic metamaterials., Scientific Reports, vol. 4 (January, 2014), pp. 4084 [doi] [abs].
The now well-known "invisibility cloak" was the first example of a transformation optical device, first suggested by Pendry and the Duke team in 2006 [J. B. Pendry, D. Schurig, D. R. Smith, "Controlling electromagnetic fields," Science 312, 1780 (2006)] and subsequently demonstrated at Duke [D. Schurig et al., "Metamaterial electromagnetic cloak at microwave frequencies," Science 314, 977 (2006)].
