Abstract
Based on transformation optics (TO), this paper uses geometric divisions and linear coordinate transformations to design “shrinking-shifting—and resha**”, and “amplifying-shifting—and resha**” devices. The proposed devices can reshape the sizes and locations of the wrapped-objects inside the core-region. The shrinking-shifting device shrinks the larger object into a smaller one and shifts it to different location, whereas the shrinking-resha** device can generate a smaller-size image with different shape located at different location. In contrast to previously designed shrinking devices, the real object wrapped inside the proposed core-region and the transformed object contains the same material properties, and the location-shifting is another feature. Here, the shifting-region is located inside the physical-space boundaries to achieve the non-negative, homogeneous, and anisotropic material properties of the proposed device, which are easier for real implementations. Thus, we further verified this concept with the amplifying-shifting and -resha** devices for visually transformation of smaller object into bigger one placed at different location and position. We also applied active scatterer to further validate the working functionality of proposed devices. In addition, the proposed devices behave like the concentrator and (or) rotator effect in the absence of any scatterer. Our findings highlight the role of TO, suggesting directions for future research on bi-functional devices that will be useful for shrinking and amplifying devices, illusion optics, camouflage, and object protection etc.
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Acknowledgements
H. A. Madni designed the devices and carried out the simulations. S. Koziel, M. M. Bilal, M. Afzal, F. Jaleel, A. Sohaib, and W. X. Jiang analysed the data and interpreted the results. H. A. Madni drafted the manuscript with the input from S. Koziel and the others. S. Koziel supervised the project. The authors would like to thank the Editor and the anonymous reviewers for their insightful comments and constructive suggestions that certainly improved the quality of this paper.
Funding
This work was supported in part by the Icelandic Centre for Research (RANNIS) Grant 206606, and by National Science Centre of Poland Grant 2020/37/B/ST7/01448.
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Madni, H.A., Koziel, S., Bilal, M.M. et al. Shrinking-shifting and amplifying-shifting device using transformation optics. Opt Quant Electron 54, 399 (2022). https://doi.org/10.1007/s11082-022-03787-5
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DOI: https://doi.org/10.1007/s11082-022-03787-5