Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/86311
Title: Active Multifunctional Microelectromechanical System Metadevices: Applications in Polarization Control, Wavefront Deflection, and Holograms
Authors: Cong, Longqing
Pitchappa, Prakash
Wu, Yang
Ke, Lin
Lee, Chengkuo
Singh, Navab
Yang, Hyunsoo
Singh, Ranjan
Keywords: Wavefront Deflection
Polarization
Issue Date: 2016
Source: Cong, L., Pitchappa, P., Wu, Y., Ke, L., Lee, C., Singh, N., et al. (2017). Active Multifunctional Microelectromechanical System Metadevices: Applications in Polarization Control, Wavefront Deflection, and Holograms. Advanced Optical Materials, 5(2), 1600716-.
Series/Report no.: Advanced Optical Materials
Abstract: Metasurfaces have provided a novel route to control the local phase of electromagnetic radiation through subwavelength scatterers where the properties of each element remain passive. A passive metasurface design can only achieve a specific functionality as it is extremely challenging to reconfigure each element that contributes toward the control of the radiation. In this work, the authors propose a different scheme based on microelectromechanical system (MEMS) to reconfigure the resonance and radiation phase via control of each dipolar element. The suspension angle of the individual bimorph cantilever in air can be precisely controlled through electrostatic actuation that determines the operative phase diagram of the metadevice. The dynamic polarization conversion is demonstrated through global control. In addition, it is proposed that a multifunctional operation such as dynamic wavefront deflection and rewritable holographic display can be accomplished by using 1D and 2D control of the cantilever array when each cantilever in the MEMS metadevice array is uniformly and accurately controlled in the large-area samples. Such a rewritable proposition can enable myriad of applications of MEMS-based metadevices in polarization-division multiplexing and dynamic flat lenses.
URI: https://hdl.handle.net/10356/86311
http://hdl.handle.net/10220/44003
ISSN: 2195-1071
DOI: http://dx.doi.org/10.1002/adom.201600716
Rights: © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SPMS Journal Articles

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