期刊
SMALL
卷 18, 期 45, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.202203871
关键词
electromagnetic manipulation; metasurfaces; touch-programmability
类别
资金
- National Key Research and Development Program of National Natural Science Foundation of China [11404207, 52177185]
- SHIEP Foundation [K2014-054, Z2015-086]
- Local Colleges and Universities Capacity Building Program of the Shanghai Science and Technology Committee, China [15110500900]
- National Key Research and Development Program of China [2017YFA0700201, 2017YFA0700202, 2017YFA0700203]
- Natural Science Foundation of Jiangsu Province [BK20212002]
- National Natural Science Foundation of China [61871127, 61735010, 61731010, 61890544, 61801117]
- State Key Laboratory of Millimeter Waves, Southeast University, China [K201924]
- Fundamental Research Funds for the Central Universities [2242018R30001]
- 111 Project [111-2-05]
This paper introduces a touch-programmable metasurface (TPM) based on touch sensing modules, which can achieve various electromagnetic (EM) manipulations and encryptions by touch controls. The TPM simplifies the coding regulation process and provides a new interaction manner, enabling independent and direct manipulations of meta-units and efficient inputs of coding patterns. The feasibility of the TPM design is verified through various coding patterns, demonstrating its wide application prospects.
Previous programmable metasurfaces integrated with diodes or varactors require external instructions for field programmable gate arrays (FPGAs), which usually rely on computer-inputs or pre-loaded algorithms. But the complicated external devices make the coding regulation process of the programmable metasurfaces cumbersome and difficult to use. To simplify the process and provide a new interaction manner, a touch-programmable metasurface (TPM) based on touch sensing modules is proposed to realize various electromagnetic (EM) manipulations and encryptions. By simply touching the meta-units of the TPM, the state of the diodes can be changed. Through the touch controls, the TPM can achieve independent and direct manipulations of meta-units and efficient inputs of coding patterns without using a FPGA or other control modules. Various coding patterns are demonstrated to achieve diverse scattering-field control and flexible near-field EM information encryptions, which verifies the feasibility of the TPM design. The presented TPM will have wide application prospects in imaging displays, wireless communications, and EM information encryptions.
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