Affiliation:
1. State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization
2. University of Electronic Science and Technology of China
3. Hainan University
Abstract
Traditional grating lenses can accumulate phase for adjusting wavefronts, and plasmonic resonances can be excited in metasurfaces with discrete structures for optical field modulation. Diffractive and plasma optics have been developing in parallel, with easy processing, small size, and dynamic control advantages. Due to theoretical hybridization, structural design can combine advantages and show great potential value. Changing the shape and size of the flat metasurface can easily produce light field reflections, but changes in height are rarely cross-explored. We propose a graded metasurface with a single-structure periodic arrangement, which can mix the effects of plasmonic resonance and grating diffraction. As for solvents of different polarities, strong polarization-dependent beam reflections are produced, enabling versatile beam convergence and deflection. Dielectric/metal nanostructures with selective hydrophobic/hydrophilic properties can be arranged by the structural material specification to selectively settle the location of the solution in a liquid environment. Furthermore, the wetted metasurface is actively triggered to achieve spectral control and initiate polarization-dependent beam steering in the broadband visible light region. Actively reconfigurable polarization-dependent beam steering has potential applications in tunable optical displays, directional emission, beam manipulation and processing, and sensing technologies.
Funder
National Natural Science Foundation of China
Chengdu Technology Innovation and Research and Development Project
Open Project Program of State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization
Sichuan Science and Technology Program
Subject
Atomic and Molecular Physics, and Optics
Cited by
1 articles.
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