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Title: Perturbative countersurveillance metaoptics with compound nanosieves
Authors: Xue, J.
Zhou, Z.-K.
Lin, L.
Guo, C.
Sun, S. 
Lei, D.
Qiu, C.-W. 
Wang, X.-H.
Issue Date: 2019
Publisher: Springer Nature
Citation: Xue, J., Zhou, Z.-K., Lin, L., Guo, C., Sun, S., Lei, D., Qiu, C.-W., Wang, X.-H. (2019). Perturbative countersurveillance metaoptics with compound nanosieves. Light: Science and Applications 8 (1) : 101. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: The progress of metaoptics relies on identifying photonic materials and geometries, the combination of which represents a promising approach to complex and desired optical functionalities. Material candidate options are primarily limited by natural availability. Thus, the search for meta-atom geometries, by either forward or inverse means, plays a pivotal role in achieving more sophisticated phenomena. Past efforts mainly focused on building the geometric library of individual meta-atoms and synthesizing various ones into a design. However, those efforts neglected the powerfulness of perturbative metaoptics due to the perception that perturbations are usually regarded as adverse and in need of being suppressed. Here, we report a perturbation-induced countersurveillance strategy using compound nanosieves mediated by structural and thermal perturbations. Private information can be almost perfectly concealed and camouflaged by the induced thermal-spectral drifts, enabling information storage and exchange in a covert way. This perturbative metaoptics can self-indicate whether the hidden information has been attacked during delivery. Our results establish a perturbative paradigm of securing a safer world of information and internet of things. © 2019, The Author(s).
Source Title: Light: Science and Applications
ISSN: 20955545
DOI: 10.1038/s41377-019-0212-4
Rights: Attribution 4.0 International
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