Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 31, Issue 25, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202100569
Keywords
advanced electromagnetic manipulation; arbitrarily linear polarizations modulation; full‐ phase modulation; radiation‐ type metasurfaces
Categories
Funding
- National Key Research and Development Program of China [2017YFA0700201, 2017YFA0700202, 2017YFA0700203]
- National Science Foundation of China [61890544, 61631007, 61701107, 61701108]
- 111 Project
- Foundation of National Excellent Doctoral Dissertation of China [201444]
- Scientific Research Foundation of Graduate School of Southeast University [YBPY1956]
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The proposed single-layer radiation-type metasurfaces enable advanced manipulation of electromagnetic waves by simultaneously controlling arbitrary phases, linear polarization states, and energy distributions. This innovative control approach may lead to the development of novel devices such as a multiple-input multiple-output antenna with efficient crosstalk suppression and information encryption, an energy-controllable router, and a metasurface holographic imaging system based on power transmission algorithms.
Manipulating the phase, polarization, and energy distribution of electromagnetic (EM) waves has facilitated numerous applications. Nowadays, metasurface provides an innovational scenario to carry out more promising and advanced control of EM waves. However, it is a great challenge to manipulate polarization, phase, and energy distribution simultaneously with a low profile. Herein, a class of single-layer radiation-type metasurfaces to achieve advanced EM manipulation is proposed. Desired EM functions can be achieved based on the geometric phase and resonant phase. Such metasurfaces enable the capability to manipulate arbitrary phases and linear polarization states simultaneously. Moreover, arbitrary energy distributions can be controlled. As examples of potential applications, three advanced EM functional devices are presented: a novel multiple-input multiple-output antenna with efficient crosstalk suppression and information encryption, an energy-controllable router, and a metasurface holographic imaging based on power transmission algorithm, respectively. The proposed strategy may open up an alternative way of controlling EM waves with advanced performance and minimalist complexity. Moreover, it may lead to advances in information encoding and cryptography.
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