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Journal articles on the topic 'Tunable metasurface'

Author: Grafiati

Published: 28 June 2021

Last updated: 29 July 2025

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1

Li, Lixia, Yu Shi, Xulei Nan, et al. "Focusing control study of flexural waves by tunable radial metasurfaces." Physica Scripta 100, no. 6 (2025): 065982. https://doi.org/10.1088/1402-4896/add96c.

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Abstract Tunable metasurfaces show promising applications in modulating flexural waves, but existing research lacks effective modulation of multidirectional flexural waves. In this paper, a tunable radial metasurface is proposed, which is able to manipulate the flexural waves to achieve various functions, especially the control of the single-focus and multi-focus focusing positions inside the metasurface. The tunable radial metasurface consists of arc sub-units, and the height of the slider in the arc sub-units can be adjusted to obtain a phase shift covering a range of 2 π with a high transmi

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2

Chen, Huan, Zixin Wang, Xin Chen, and Junli Wang. "Tunable Beam Steering Metasurface Based on a PMN-PT Crystal with a High Electro-Optic Coefficient." Sensors 25, no. 1 (2024): 55. https://doi.org/10.3390/s25010055.

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Existing tunable optical metasurfaces based on the electro-optic effect are either complex in structure or have a limited phase modulation range. In this paper, a simple rectangular metasurface structure based on a Pb(Mg1/3Nb2/3)O3-PbTiO3 (PMN-PT) crystal with high electro-optic coefficient of 120 pm/V was designed to demonstrate its electrically tunable performance in the optical communication band through simulations. By optimizing the structure parameters, a tunable metasurface was generated that can induce a complete 2π phase shift for beam deflection while maintaining relatively uniform t

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3

Xu, Zhu-Long, Shi-Bo Yu, Junjie Liu, and Kuo-Chih Chuang. "A Tunable Zig-Zag Reflective Elastic Metasurface." Crystals 12, no. 8 (2022): 1170. http://dx.doi.org/10.3390/cryst12081170.

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In this paper, inspired by origami structures, we offer a very simple tuning method to overcome the limitations of general elastic metasurfaces, where only a certain functionality at a certain frequency range can be achieved, by designing a reflective metasurface based on foldable/deployable zig-zag structures. By utilizing peg/screw connections, the folding angles of the zig-zag structures can be easily tuned while also being fixable. By tuning the folding angle, the subunit of the zig-zag metasurface can cover a 2π phase shift span and the phase shift can be tuned continuously, and almost li

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4

Wang, Chang, Yan Sun, Zeqing Yu, et al. "Dual-Functional Tunable Metasurface for Meta-Axicon with a Variable Depth of Focus and Continuous-Zoom Metalens." Nanomaterials 13, no. 18 (2023): 2530. http://dx.doi.org/10.3390/nano13182530.

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Optical metasurfaces have been widely investigated for their versatile ability to manipulate wavefront and miniaturize traditional optical components into ultrathin planar devices. The integration of metasurfaces with multifunctionality and tunability has fundamentally transformed optics with unprecedented control over light propagation and manipulation. This study introduces a pioneering framework for the development of tunable metasurfaces with multifunctionality, and an example of a tunable metasurface of dual functionalities is proposed and numerically verified as one of the tunable meta-a

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Yang, Jingyi, Sudip Gurung, Subhajit Bej, Peinan Ni, and Ho Wai Howard Lee. "Active optical metasurfaces: comprehensive review on physics, mechanisms, and prospective applications." Reports on Progress in Physics 85, no. 3 (2022): 036101. http://dx.doi.org/10.1088/1361-6633/ac2aaf.

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Abstract Optical metasurfaces with subwavelength thickness hold considerable promise for future advances in fundamental optics and novel optical applications due to their unprecedented ability to control the phase, amplitude, and polarization of transmitted, reflected, and diffracted light. Introducing active functionalities to optical metasurfaces is an essential step to the development of next-generation flat optical components and devices. During the last few years, many attempts have been made to develop tunable optical metasurfaces with dynamic control of optical properties (e.g., amplitu

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Peng, Yao-Yin, Jin-Heng Chen, Zhang-Zhao Yang, Xin-Ye Zou, Chao Tao, and Jian-Chun Cheng. "Broadband tunable acoustic metasurface based on piezoelectric composite structure with two resonant modes." Applied Physics Express 15, no. 1 (2022): 014004. http://dx.doi.org/10.35848/1882-0786/ac444a.

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Abstract In this letter, we propose a deep-wavelength tunable acoustic metasurface composed of a fixed piezoelectric composite structure with a broad operating frequency range. The metasurface unit has two tunable resonant frequencies determined by specific external inductors and can continuously modulate the phase of the transmitted wave. The influence of the inductors on resonant frequencies are studied by simulation and experiment. Moreover, the functions of acoustic beam steering and focusing by the designed metasurface at three arbitrarily chosen frequencies are verified in simulation. Th

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7

He, Shaowei, Huimin Yang, Yunhui Jiang, Wenjun Deng, and Weiming Zhu. "Recent Advances in MEMS Metasurfaces and Their Applications on Tunable Lens." Micromachines 10, no. 8 (2019): 505. http://dx.doi.org/10.3390/mi10080505.

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The electromagnetic (EM) properties of metasurfaces depend on both structural design and material properties. microelectromechanical systems (MEMS) technology offers an approach for tuning metasurface EM properties by structural reconfiguration. In the past 10 years, vast applications have been demonstrated based on MEMS metasurfaces, which proved to have merits including, large tunability, fast speed, small size, light weight, capability of dense integration, and compatibility of cost-effective fabrication process. Here, recent advances in MEMS metasurface applications are reviewed and catego

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8

Chen, Yankai, and Yi Wang. "Electrically tunable toroidal Fano resonances of symmetry-breaking dielectric metasurfaces using graphene in the infrared region." Journal of Optics 24, no. 4 (2022): 044012. http://dx.doi.org/10.1088/2040-8986/ac5836.

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Abstract The magnitudes of coupling strength play an important role in various resonant phenomena such as Fano resonances (FRs). However, the coupling strength within the FRs using dielectric metasurfaces cannot be easily manipulated once they have been made. In this paper, toroidal FR is excited using the silicon metasurface with symmetry-breaking nanocylinders. Inserting a graphene layer with an ion-gel top gate onto the silicon metasurface, actively tunable response of a toroidal FR resulting from the manipulated coupling strength and the phase shift between two states. The hybrid graphene-

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9

Li, Jing, Hongjie Fan, Han Ye, et al. "Design of Multifunctional Tunable Metasurface Assisted by Elastic Substrate." Nanomaterials 12, no. 14 (2022): 2387. http://dx.doi.org/10.3390/nano12142387.

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Metasurfaces with both multifunctionality and tunability hold great application potential in next-generation optical devices. In this paper, we propose a stretchable metasurface composed of arrays of identical dielectric rectangular resonators embedded in the polydimethylsiloxane (PDMS) substrate. It is shown that the metasurface possesses three functions at the operating wavelength of 532 nm. The switching of functions can be implemented by changing the period Px of the metasurface, induced by stretching the PDMS substrate along the x-direction. When the period Px is less than the operating w

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10

Effah, Elijah, Ezekiel Edward Nettey-Oppong, Ahmed Ali, Kyung Min Byun, and Seung Ho Choi. "Tunable Metasurfaces Based on Mechanically Deformable Polymeric Substrates." Photonics 10, no. 2 (2023): 119. http://dx.doi.org/10.3390/photonics10020119.

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The emergence of metamaterials has presented an unprecedented platform to control the fundamental properties of light at the nanoscale. Conventional metamaterials, however, possess passive properties that cannot be modulated post-fabrication, limiting their application spectrum. Recent metasurface research has explored a plethora of active control mechanisms to modulate the optical properties of metasurfaces post-fabrication. A key active control mechanism of optical properties involves the use of mechanical deformation, aided by deformable polymeric substrates. The use of deformable polymeric

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11

Wang, Ling, Weijun Hong, Li Deng, et al. "Reconfigurable Multifunctional Metasurface Hybridized with Vanadium Dioxide at Terahertz Frequencies." Materials 11, no. 10 (2018): 2040. http://dx.doi.org/10.3390/ma11102040.

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Driven by the continuous demand for system integration and device miniaturization, integrating multiple diversified functions into a single metasurface hybridized with the tunable metaparticle is highly demanding at terahertz (THz) range. However, up to now, because of the limitation of the tunable metaparticle at terahertz range, most of the metasurfaces feature a single function only or process similar functionalities at a single frequency. A reconfigurable multifunctional metasurface which can realize the switch of transmission and reflection and manipulate the linearized polarization state

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12

Jiang, Huan, Junhao Huang, Wenchang Zhu, Yetian Wang, and Alexander V. Kildishev. "Tunable Polarization-Selective Absorption by Gating Ultrathin TiN Films in the Near-Infrared Region." Photonics 11, no. 10 (2024): 917. http://dx.doi.org/10.3390/photonics11100917.

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Ultrathin titanium nitride (TiN) is a novel material platform for constructing active metasurfaces in the near-infrared region (NIR). Here, we realized tunable polarization-selective absorption by gating ultrathin TiN in an Ultrathin TiN Grating Metasurface (UTGM) and a gold resonator/TiN film Hybrid Metasurface (GTHM), respectively. The TM wave absorption (0.96) was much larger than that of the TE wave in the UTGM. When the carrier density decreased by 12%, the near-perfect TM absorption peak blue-shifted by 0.3 μm. Similarly, the linear dichroism (0.96) peak in GTHM blue-shifted by 0.12 μm w

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13

Yu, Sanghyeok, Youngsoo Kim, Eunso Shin, and Soon-Hong Kwon. "Dynamic Beam Steering and Focusing Graphene Metasurface Mirror Based on Fermi Energy Control." Micromachines 14, no. 4 (2023): 715. http://dx.doi.org/10.3390/mi14040715.

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Beam steering technology is crucial for radio frequency and infrared telecommunication signal processing. Microelectromechanical systems (MEMS) are typically used for beam steering in infrared optics-based fields but have slow operational speeds. An alternative solution is to use tunable metasurfaces. Since graphene has gate-tunable optical properties, it is widely used in electrically tunable optical devices due to ultrathin physical thickness. We propose a tunable metasurface structure using graphene in a metal gap structure that can exhibit a fast-operating speed through bias control. The p

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14

Si, Wenrong, Chenzhao Fu, Fengyuan Gan, Dun Lan, and Wei Li. "Dynamic Beam Switching by the Highly Sensitive Metasurface Composed of All-Metallic Split-Ring Resonators." Journal of Nanomaterials 2022 (July 14, 2022): 1–6. http://dx.doi.org/10.1155/2022/5186069.

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The development of metasurfaces capable of arbitrarily manipulating electromagnetic waves has created new opportunities for various applications. However, most tunable metasurface devices via different modulation techniques exhibit large fabrication difficulties or narrow bandwidths. Here, we use the all-metallic split-ring resonator to design a dynamically tunable metasurface that is highly sensitive to the ambient refractive index and capable of broadband beam switching. Different from the previous optical scatters, the split-ring resonator is put on the metal substrate. Due to the existence

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15

Zhang, Yin, Yijun Feng, and Junming Zhao. "Graphene-Enabled Tunable Phase Gradient Metasurface for Broadband Dispersion Manipulation of Terahertz Wave." Micromachines 14, no. 11 (2023): 2006. http://dx.doi.org/10.3390/mi14112006.

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With the increasing demand for the miniaturization and flexibility of optical devices, graphene-based metasurfaces have emerged as a promising ideal design platform for realizing planar and tunable electromagnetic or optical devices. In this paper, we propose a tunable metasurface with low-dispersion phase gradient characteristics that is composed of an array of double-layer graphene ribbons sandwiched with a thin insulating layer and a polymer substrate layer with a gold ground plane. As two typical proof-of-concept examples, metasurfaces act as a planar prism and a planar lens, respectively,

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16

Zhang, Shijie, Qi Wang, Ruimei Zeng, Chenliang Chang, Dawei Zhang, and Songlin Zhuang. "Thermal tuning nanoprinting based on liquid crystal tunable dual-layered metasurfaces for optical information encryption." Optics Express 32, no. 3 (2024): 4639. http://dx.doi.org/10.1364/oe.514603.

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Dynamic tuning metasurfaces represent a significant advancement in optical encryption techniques, enabling highly secure multichannel responses. This paper proposes a liquid crystal (LC) tunable dual-layered metasurface to establish a thermal-encrypted optical platform for information storage. Through the screening of unit cells and coupling of characteristics, a dynamic polarization-dependent beam-steering metasurface is vertically cascaded with an angular multiplexing nanoprinting metasurface, separated by a dielectric layer. By integrating high-birefringence LCs into dual-layered metasurfac

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17

Luo, Sisi, Jianjiao Hao, Fuju Ye, et al. "Evolution of the Electromagnetic Manipulation: From Tunable to Programmable and Intelligent Metasurfaces." Micromachines 12, no. 8 (2021): 988. http://dx.doi.org/10.3390/mi12080988.

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Looking back on the development of metamaterials in the past 20 years, metamaterials have gradually developed from three-dimensional complex electromagnetic structures to a two-dimensional metasurface with a low profile, during which a series of subversive achievements have been produced. The form of electromagnetic manipulation of the metasurface has evolved from passive to active tunable, programmable, and other dynamic and real-time controllable forms. In particular, the proposal of coding and programmable metasurfaces endows metasurfaces with new vitality. By describing metamaterials throu

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18

Zhang, Ming, Peng Dong, Yu Wang, et al. "Tunable Terahertz Wavefront Modulation Based on Phase Change Materials Embedded in Metasurface." Nanomaterials 12, no. 20 (2022): 3592. http://dx.doi.org/10.3390/nano12203592.

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In the past decades, metasurfaces have shown their extraordinary abilities on manipulating the wavefront of electromagnetic wave. Based on the ability, various kinds of metasurfaces are designed to realize new functional metadevices based on wavefront manipulations, such as anomalous beam steering, focus metalens, vortex beams generator, and holographic imaging. However, most of the previously proposed designs based on metasurfaces are fixed once design, which is limited for applications where light modulation needs to be tunable. In this paper, we proposed a design for THz tunable wavefront m

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19

Ma, Ruize, Yu Mao, Peiyang Li, Dong Li, and Dandan Wen. "ITO-Based Electrically Tunable Metasurface for Active Control of Light Transmission." Nanomaterials 14, no. 19 (2024): 1606. http://dx.doi.org/10.3390/nano14191606.

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In recent years, the rapid development of dynamically tunable metasurfaces has provided a new avenue for flexible control of optical properties. This paper introduces a transmission-type electrically tunable metasurface, employing a series of subwavelength-scale silicon (Si) nanoring structures with an intermediate layer of Al2O3-ITO-Al2O3. This design allows the metasurface to induce strong Mie resonance when transverse electric (TE) waves are normally incident. When a bias voltage is applied, the interaction between light and matter is enhanced due to the formation of an electron accumulatio

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20

Iqbal, Rehmat, Ubaid Ur Rahman Qureshi, Cao Jie, Zia Ur Rahman, and Naveed Jafar. "Polarization and Incident Angle Independent Multifunctional and Multiband Tunable THz Metasurface Based on VO2." Nanomaterials 14, no. 12 (2024): 1048. http://dx.doi.org/10.3390/nano14121048.

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Aiming at the limitations of single-functionality, limited-applicability, and complex designs prevalent in current metasurfaces, we propose a terahertz multifunctional and multiband tunable metasurface utilizing a -metal hybrid structure. This metasurface structure comprises a top -metal resonance layer, a middle polyimide dielectric layer, and a gold film reflective layer at the bottom. This metasurface exhibits multifunctionality, operating independently of polarization and incident angle. The varying conductivity states of the layers, enabling the metasurface to achieve various terahertz fu

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21

Hu, Yunsheng, Yihua Bai, Qing Zhang, and Yuanjie Yang. "Electrically controlled molecular fingerprint retrieval with van der Waals metasurface." Applied Physics Letters 121, no. 14 (2022): 141701. http://dx.doi.org/10.1063/5.0111940.

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Polaritons in two-dimensional van der Waals (vdW) materials possess extreme light confinement, which have emerged as a potential platform for next-generation biosensing and infrared spectroscopy. Here, we propose an ultra-thin and electric tunable graphene/hexagonal boron nitride/graphene metasurface for detecting molecular fingerprints over a broad spectrum. The vdW metasurface supports hybrid plasmon–phonon polariton resonance with high-quality factor (Q > 120) and electrically controlled broadband spectra tunability from 6.5 to 7 μm. After coating a thin layer of bio-molecular (e.g., CBP

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Selvaraj, Monisha, Ramya Vijay, Rajesh Anbazhagan, and Amirtharajan Rengarajan. "Reconfigurable Metasurface: Enabling Tunable Reflection in 6G Wireless Communications." Sensors 23, no. 22 (2023): 9166. http://dx.doi.org/10.3390/s23229166.

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With the continuous advancement of technology, there is an increasing need for innovative solutions that can handle complex applications such as haptic communications, Internet of Things for smart cities, automation, and manufacturing. One technology that has received much attention is the phase reconfigurable metasurface for reconfigurable intelligent surfaces (RISs). The RIS demands low-power consumption, simple configuration, angular stability, and polarization insensitivity. The use of phase reconfigurable metasurfaces provides benefits such as low cost, low power consumption, and improved

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23

Santonocito, Alberto, Barbara Patrizi, and Guido Toci. "Recent Advances in Tunable Metasurfaces and Their Application in Optics." Nanomaterials 13, no. 10 (2023): 1633. http://dx.doi.org/10.3390/nano13101633.

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Metasurfaces can be opportunely and specifically designed to manipulate electromagnetic wavefronts. In recent years, a large variety of metasurface-based optical devices such as planar lenses, beam deflectors, polarization converters, and so on have been designed and fabricated. Of particular interest are tunable metasurfaces, which allow the modulation of the optical response of a metasurface; for instance, the variation in the focal length of a converging metalens. Response tunability can be achieved through external sources that modify the permittivity of the materials constituting the nano

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Shen, Zhe, and Dingxin Huang. "A Review on Metasurface Beam Splitters." Nanomanufacturing 2, no. 4 (2022): 194–228. http://dx.doi.org/10.3390/nanomanufacturing2040014.

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Beam splitters are widely used in various optical systems, but traditional beam splitters are bulky and heavy, which are not conducive to the integrated utilization of optical devices. Metamaterials have attracted extensive attention as a kind of miniature artificial materials, and there have been many works on the design of metasurface beam splitters. Using metasurfaces, multiple functions of traditional beam splitters can be achieved. Meanwhile, metasurface beam splitters have the advantages of small size, easy integration, flexible design of beam-splitting performance, and tunable functions

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Cui, Ying, Xiaosai Wang, Huan Jiang, and Yongyuan Jiang. "High-efficiency and tunable circular dichroism in chiral graphene metasurface." Journal of Physics D: Applied Physics 55, no. 13 (2021): 135102. http://dx.doi.org/10.1088/1361-6463/ac4450.

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Abstract Circular dichroism (CD) response is extremely important for dynamic polarization control, chiral molecular sensing and imaging, etc. Here, we numerically demonstrated high-efficiency and tunable CD using a symmetry broken graphene-dielectric-metal composite microstructure. By introducing slot patterns in graphene ribbons, the metasurface exhibits giant polarization-selective absorption for circularly polarized (CP) wave excitations. The maximum CD reaches 0.87 at 2.78 THz, which originates from the localized surface plasmon resonances in patterned graphene. Besides, the operating freq

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Lin, Bizun, Jingru Li, Wei Lin, and Qingfen Ma. "Active Tunable Elastic Metasurface for Abnormal Flexural Wave Transmission." Applied Sciences 14, no. 7 (2024): 2717. http://dx.doi.org/10.3390/app14072717.

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An active elastic metasurface has more flexibility than a passively modulated elastic metasurface, owing to the manipulation of the phase gradient that can be realized without changing the geometrical configuration. In this study, a negative proportional feedback control system was employed to provide positive active control stiffness for adaptive unit cells, with the aim of achieving the active modulation of the phase gradient. The relationship between the control gain and the phase velocity of the flexural wave was derived, and the transfer coefficients and phase shifts of the flexural wave

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27

He, Qiong, Shulin Sun, and Lei Zhou. "Tunable/Reconfigurable Metasurfaces: Physics and Applications." Research 2019 (July 7, 2019): 1–16. http://dx.doi.org/10.34133/2019/1849272.

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Metasurfaces, ultrathin metamaterials constructed by planar meta-atoms with tailored electromagnetic (EM) responses, have attracted tremendous attention due to their exotic abilities to freely control EM waves. With active elements incorporated into metasurface designs, one can realize tunable and/or reconfigurable metadevices with functionalities controlled by external stimuli, opening a new platform to dynamically manipulate EM waves. In this article, we briefly review recent progress on tunable/reconfigurable metasurfaces, focusing on their working mechanisms and practical applications. We

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Meng, Qi, Xingqiao Chen, Wei Xu, Zhihong Zhu, Xiaodong Yuan, and Jianfa Zhang. "High Q Resonant Sb2S3-Lithium Niobate Metasurface for Active Nanophotonics." Nanomaterials 11, no. 9 (2021): 2373. http://dx.doi.org/10.3390/nano11092373.

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Phase change materials (PCMs) are attracting more and more attentions as enabling materials for tunable nanophotonics. They can be processed into functional photonic devices through customized laser writing, providing great flexibility for fabrication and reconfiguration. Lithium Niobate (LN) has excellent nonlinear and electro-optical properties, but is difficult to process, which limits its application in nanophotonic devices. In this paper, we combine the emerging low-loss phase change material Sb2S3 with LN and propose a new type of high Q resonant metasurface. Simulation results show that

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Li, Panyi, Jiwei Zhao, Caofei Luo, et al. "Self-Adaptive Intelligent Metasurface Cloak System with Integrated Sensing Units." Materials 17, no. 19 (2024): 4863. http://dx.doi.org/10.3390/ma17194863.

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Metasurfaces, which are ultrathin planar metamaterials arranged in certain global sequences, interact uniquely with the surrounding light field and exhibit unusual effects of light modulation. Many interesting applications have been discovered based on metasurfaces, particularly in invisibility cloaks. However, most invisibility cloaks are limited to working in specific directions. Achieving effectiveness in multiple directions requires the metasurface to be designed with both perception and modulation capabilities. Current multi-directional metasurface cloak systems are implemented with discr

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Asefa, Semere Araya, Sangmin Shim, Myeongsu Seong, and Dasol Lee. "Chiral Metasurfaces: A Review of the Fundamentals and Research Advances." Applied Sciences 13, no. 19 (2023): 10590. http://dx.doi.org/10.3390/app131910590.

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Chirality, the absence of mirror symmetry, is predominant in nature. The chiral nature of the electromagnetic field behaves differently with chiral matter for left circularly polarized and right circularly polarized light. The chiroptical behavior in the sensing of naturally occurring chiral objects is weak, and improving the chiroptical response enhances the chiral sensing platform. This review covers the fundamental concepts of chiral metasurfaces and various types of single- and multi-layered chiral metasurfaces. In addition, we discuss tunable and deep-learning-based chiral metasurfaces. T

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Jiang, Huixia, Lili Sheng, Yumei Luo, Liang Meng, and Weiping Cao. "Design of Tunable Broadband Graphene-Based Metasurface with Amplitude-Phase Modulation." Materials 16, no. 13 (2023): 4633. http://dx.doi.org/10.3390/ma16134633.

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Due to the growing scarcity of spectrum resources in the low-frequency band, the requirement of beam-reconfigurable antennas in the millimeter wave band is urgent. In this paper, a W-band graphene-based metasurface working in a broad bandwidth is proposed with reflective amplitude coding. Here, graphene sheets play a dual role in radiating and regulating electromagnetic waves. By adjusting the Fermi levels of graphene, the reflective amplitude and phase of the metasurface can be modulated simultaneously, enabling multi-beam switching and beam deflection in far-field. The proposed metasurface a

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Ikeda, Taro, Etsumi Kojima, Shinya Sugiura, and Hideo Iizuka. "Reflective graphene metasurface without a metallic plate." Journal of Applied Physics 133, no. 7 (2023): 073102. http://dx.doi.org/10.1063/5.0134500.

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Reflective metasurfaces for arbitrary wave-front control require unit cells to achieve both [Formula: see text] phase rotation and unity amplitude in reflection waves, and such requirements are a fundamental challenge for ultra-thin metasurfaces without the use of a metallic plate. We analytically show that in two coupled resonators, tuning the resonance frequency with the external decay rate for one of the resonators enables near [Formula: see text] phase rotation and unity amplitude in the reflection wave, where no reflector is required. We implement the mechanism on a reflective graphene me

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SISOMBAT, Félix, Thibaut DEVAUX, Samuel CALLé, and Lionel HAUMESSER. "Acoustic reflector remotely tunable by the acoustic radiation force." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 270, no. 4 (2024): 7893–98. http://dx.doi.org/10.3397/in_2024_4019.

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Specifically structured surface can be used to control acoustic waves reflection enabling wavefront shaping tailored for desired applications such as imaging or cloaking. With the development of metasurfaces, which enable changing the reflection of an incident acoustic wave at an interface using a sub-wavelength structure, it is possible to explore new frontiers of Snell-Descartes laws. However, the control over wave propagation is pre-established when using fixed structures, directing research towards metasurfaces reconfigurable in both time and space. This work proposes a metamaterial archit

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Stojanoska, Katerina, and Chen Shen. "Non-Hermitian planar elastic metasurface for unidirectional focusing of flexural waves." Applied Physics Letters 120, no. 24 (2022): 241701. http://dx.doi.org/10.1063/5.0097177.

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Metasurfaces exhibiting spatially asymmetric inner structures have been shown to host unidirectional scattering effects, benefiting areas where directional control of waves is desired. In this work, we propose a non-Hermitian planar elastic metasurface to achieve unidirectional focusing of flexural waves. The unit cells are constructed by piezoelectric disks and metallic blocks that are asymmetrically loaded. A tunable material loss is then introduced by negative capacitance shunting. By suitably engineering the induced loss profile, a series of unit cells are designed, which can individually

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Zhang, Zhendong, Yan Li, Kaixiang Cheng, Duo Deng, Xiaosai Wang, and Yi Liu. "Thermally tunable metasurface for phase dynamic controlling of terahertz wave." Physica Scripta, February 7, 2025. https://doi.org/10.1088/1402-4896/adb3db.

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Abstract Metasurface, spatiotemporal metasurface and tunable metasurface have attracted more and more attention in the fields of communication, polarization image and terahertz detection. Numerous tunable metasurfaces have been proposed recently for generating a diverse array of applications. However, many proposed tunable metasurfaces have been limited to a single state switching function, which has severely hampered their development. In this paper, eight meta-atoms were designed by employing the InSb, that dielectric constant could be modulated by temperature. Consequently, the phase delay

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Dong, Yujie, Xiyu Sun, Yan Li, and Yi Liu. "Full-space terahertz metasurface based on thermally tunable InSb." Journal of Physics D: Applied Physics, September 5, 2022. http://dx.doi.org/10.1088/1361-6463/ac8f56.

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Abstract Terahertz (THz) metasurfaces have potential research value in high-quality molecular imaging, high-speed broadband communication, biology, etc. In this paper, thermally tunable full space metasurface was proposed and analyzed by using Finite Difference Time Domain method based on Pancharatnam–Berry phase modulation and InSb temperature characteristic. At 220 K, a metasurface composed of InSb elements can simultaneously achieve efficient transmission and reflection of the incident circularly polarized light at 0.8 THz and 1.15 THz, respectively. On the contrary, at 360 K, the metasurfa

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Yang, Younghwan, Hongyoon Kim, Trevon Badloe, and Junsuk Rho. "Gap-plasmon-driven spin angular momentum selection of chiral metasurfaces for intensity-tunable metaholography working at visible frequencies." Nanophotonics, May 16, 2022. http://dx.doi.org/10.1515/nanoph-2022-0075.

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Abstract Tunable metasurfaces can replace conventional bulky active optical modules to realize practical flat optical devices such as lenses, LiDAR, holography, and augmented reality. However, tunable metasurfaces have generally been limited to switching between two distinct states. Here, we present liquid crystal (LC) integrated chiral metasurfaces, of which the metahologram intensity can be adjusted continuously between fully ‘on’ and ‘off’ states. The chiral metasurface consists of a gap-shifted split ring resonator (SRR), and exhibits spin angular momentum selection that reflects left-circ

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Kim, Sun Il, Junghyun Park, Byung Gil Jeong, et al. "Two-dimensional beam steering with tunable metasurface in infrared regime." Nanophotonics, February 2, 2022. http://dx.doi.org/10.1515/nanoph-2021-0664.

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Abstract Tunable metasurfaces can change the optical properties of incident light at will such as amplitude, phase, and polarization in a time-dependent fashion. Ultrafast switching speed and the ability for the pixel size reduction of the tunable metasurface can allow various applications such as light detection and ranging, interferometric sensors, and free space optical communications, to name a few. Although there have been successful demonstrations of the wavefront shaping using the tunable metasurface, the implementation of the two-dimensional metasurface pixel array that can be individu

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Nauman, Mudassar, Jingshi Yan, Domenico de Ceglia, et al. "Tunable unidirectional nonlinear emission from transition-metal-dichalcogenide metasurfaces." Nature Communications 12, no. 1 (2021). http://dx.doi.org/10.1038/s41467-021-25717-x.

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AbstractNonlinear light sources are central to a myriad of applications, driving a quest for their miniaturisation down to the nanoscale. In this quest, nonlinear metasurfaces hold a great promise, as they enhance nonlinear effects through their resonant photonic environment and high refractive index, such as in high-index dielectric metasurfaces. However, despite the sub-diffractive operation of dielectric metasurfaces at the fundamental wave, this condition is not fulfilled for the nonlinearly generated harmonic waves, thereby all nonlinear metasurfaces to date emit multiple diffractive beam

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Li, Liulin, Bingyi Liu, Zhixiang Li, Kai Guo, and Zhongyi Guo. "Acoustic vortex filter based on tunable metasurfaces." Applied Physics Letters 124, no. 1 (2024). http://dx.doi.org/10.1063/5.0170902.

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In this paper, we present an acoustic vortex filter (AVF) based on tunable metasurfaces, which can selectively filter the incident multiplexed vortices that carry different orbital angular momentum (OAM). Our metasurface-based AVF is composed of an upper acoustic metasurface (UAM) and a lower acoustic metasurface, of which the intrinsic topological charge (ITC) can be tuned by mechanically rotating the UAM along its central axis. Due to the critical order of the propagating vortex modes in waveguide, controlling the ITC of the AVF allows for the selective filtering of incoming multiplexed acou

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Sokhoyan, Ruzan, Claudio U. Hail, Morgan Foley, Meir Y. Grajower, and Harry A. Atwater. "All‐Dielectric High‐Q Dynamically Tunable Transmissive Metasurfaces." Laser & Photonics Reviews, February 8, 2024. http://dx.doi.org/10.1002/lpor.202300980.

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AbstractActive metasurfaces, which are arrays of actively tunable resonant elements, can dynamically control the wavefront of the scattered light at a subwavelength scale. To date, most active metasurfaces that enable dynamic wavefront shaping operate in reflection. On the other hand, active metasurfaces operating in transmission are of considerable interest as they can readily be integrated with chip‐scale light sources, yielding ultra‐compact wavefront shaping devices. Here, designs for all‐dielectric low‐loss active metasurfaces which can dynamically manipulate the transmitted light wavefro

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Lee, Seung Hyun, Daseul Jeong, K. K. Sriram, et al. "Plasmonic polymer nanoantenna arrays for electrically tunable and electrode-free metasurfaces." Journal of Materials Chemistry A, 2023. http://dx.doi.org/10.1039/d3ta03383j.

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Electrically tunable metasurfaces and interrelated nanofabrication techniques are essential for metasurface-based optoelectronic applications. We present a nanofabrication method suitable for various types of plasmonic polymer metasurfaces including inverted arrays of...

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Devi, Koijam Monika, Arun Jana, Shreeya Rane, Palash Roy Choudhury, and Dibakar Roy Chowdhury. "Temperature tunable electromagnetically induced transparency in terahertz metasurface fabricated on ferroelectric platform." Journal of Physics D: Applied Physics, October 11, 2022. http://dx.doi.org/10.1088/1361-6463/ac9912.

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Abstract The integration of active materials in terahertz (THz) metasurfaces is pivotal for the realization of functional device applications in diverse fields like sensing, imaging, communication, etc. In this context, ferroelectric materials endowed with tunable electro-optic properties have recently emerged as a novel candidate for achieving actively tuned THz metasurfaces. Here, we experimentally investigate temperature tuning of electromagnetically induced transparency (EIT) effects in a THz metasurface based on ferroelectric barium titanate (BaTiO3) thin film. We characterize tunable die

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Wang, Jiujiang, Chenhui Lu, Jiao Geng, and Liping Shi. "Polarization-switchable structural colors generated by AlN metasurfaces and the effect of different substrates." AIP Advances 14, no. 10 (2024). http://dx.doi.org/10.1063/5.0222874.

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Metasurfaces have the capability to boost the generation of distinct colors by improving the interaction between surface materials and photons. We present a straightforward and polarization-tunable aluminum nitride metasurface. This metasurface enables the display and concealment of the composition pattern and exhibits color switching by modifying the polarization state of the incident light. We further explore the impact of different substrates on metasurface performance. The results indicate that the full width at half maximum of the reflectance curves increases with the increase of the refr

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于博, 庄书磊, 王正心, et al. "Double-spiral terahertz tunable metasurface based on nano-printing technology." Acta Physica Sinica, 2022, 0. http://dx.doi.org/10.7498/aps.71.20212408.

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Electromagnetic devices made of artificially constructed metasurfaces can achieve filtering, modulation, sensing, and detection functions in the terahertz frequency band, which is essential for the application of terahertz waves in the fields of communication and imaging. We designed and prepared a flexible and transparent double helix metasurface based on nano-printing technology, and used the metasurface to construct a rotating tunable filter, which can achieve regular tuning of the terahertz wave transmittance by rotating the metasurface. After rotating by 90°, the transmittance at 0.52THz

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Hajian, Hodjat, Matthieu Proffit, Ekmel Özbay, Pascal Landais, and A. Louise Bradley. "Reprogrammable metasurface design for NIR beam steering and active filtering." Journal of Physics D: Applied Physics, July 12, 2024. http://dx.doi.org/10.1088/1361-6463/ad626c.

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Abstract Reprogrammable metasurfaces enable active modulation of light at subwavelength scales. Operating in the microwave, terahertz, and mid-infrared ranges, these metasurfaces find applications in communications, sensing, and imaging. Electrically tunable metasurfaces operating in the near-infrared (NIR) range are crucial for LiDAR applications. Achieving a NIR reprogrammable metasurface requires individual gating of nano-antennas, emphasizing effective heat management to preserve device performance. To this end, here we propose an electrically tunable Au-vanadium dioxide (VO2) metasurface

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Feng, Zheng, Dacheng Wang, Caihong Zhang, et al. "Active control of metasurface via integrated spintronic terahertz emitter." Journal of Physics D: Applied Physics, January 19, 2023. http://dx.doi.org/10.1088/1361-6463/acb4a7.

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Abstract Active metasurfaces have attracted increased attention due to their capabilities in function switching and wavefront shaping. Here we develop a new paradigm for active control of metasurfaces via integrating a tunable and programmable spintronic terahertz emitter (STE). While compatible with almost all conventional materials for metasurfaces, the STE can empower the passive metasurfaces to be active with increased flexibility. For the sake of illustration, a STE integrated metasurface quarter-wave plate is demonstrated, which enables broadband full polarization control over the entire

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Tan, Yonghui, Yunping Qi, Xinmiao Ding, Wenqing Guan, and Bing Luo. "Tunable continuously bound states for enhanced circular dichroism in graphene-enhanced metasurfaces." Physica Scripta, March 6, 2025. https://doi.org/10.1088/1402-4896/adbd8d.

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Abstract Metasurfaces are increasingly important for achieving optical chiral responses, especially those capable of spin-selective transmission and tunable circular dichroism (CD). In recent years, the introduction of asymmetry into structures, inspired by the concept of bound states in the continuum (BIC), has been found to enhance the chiral optical response. However, most of these chiral metasurfaces are either non-tunable or have low CD. In this paper, we present a planar metasurface that generates significant intrinsic chirality, while allowing for arbitrary control over the CD and trans

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Sokhoyan, Ruzan, Prachi Thureja, Jared Sisler, et al. "Electrically tunable conducting oxide metasurfaces for high power applications." Nanophotonics, January 18, 2023. http://dx.doi.org/10.1515/nanoph-2022-0594.

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Abstract Active metasurfaces designed to operate at optical frequencies are flat optical elements that can dynamic, subwavelength-scale wavefront control of reflected or transmitted light. The practical and fundamental power-handling limits of active metasurfaces at high pulse energies and high average powers determine the potential applications for these emerging photonic components. Here, we investigate thermal performance limits of reflective gate-tunable conducting oxide metasurfaces illuminated with high power density laser beams, for both continuous wave (CW) and pulsed laser illuminatio

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Yuan, Yifang, Jing Zhang, Chenyu Li, Hong Li, Yiping Han, and Jing Lou. "Ultrafast Light-driven Metasurfaces with Ultra-Broadband Frequency Agility Channel for Sensing." Nanoscale, 2024. http://dx.doi.org/10.1039/d3nr06686j.

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Active terahertz metasurface devices have been widely used in communication technology, optical computing and biosensing. However, numerous dynamically tunable metasurfaces are only operating at a single frequency point or in...

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