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Nanomaterials
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Nanophotonics and Plasmonics
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Nanophotonics and Plasmonics

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanophotonics Materials and Devices".

Deadline for manuscript submissions: 25 January 2025 | Viewed by 678

Special Issue Editor

Prof. Tiansong Deng

E-Mail Website
Guest Editor
School of Electronics and Information Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
Interests: nanophotonics; plasmonic material; photocatalysis; sensors

Special Issue Information

Dear Colleagues,

The field of Nanophotonics and Plasmonics has emerged as a pivotal area of research, bridging the gap between optics and nanotechnology. This interdisciplinary domain explores the behavior of light at the nanoscale, particularly the interaction of light with metallic and dielectric nanostructures, leading to phenomena such as surface plasmon resonance. Rapid advancements in this field are driven by potential applications in sensing, imaging, data storage, bio-medicine, photocatalysis, and quantum computing.

This Special Issue of Nanomaterials aims to present the latest research in Nanophotonics and Plasmonics, including innovative approaches and methodologies that are shaping the future of this field. This issue seeks to foster a deeper understanding of the fundamental principles governing nanoscale light–matter interactions and their practical implications.

The Special Issue welcomes original research articles, review papers, and perspectives that cover a broad range of topics within Nanophotonics and Plasmonics. This includes, but is not limited to, the following areas:

- Design and fabrication of plasmonic nanostructures;
- Theoretical modeling of light-nanostructure interactions;
- Plasmon-enhanced spectroscopy and sensing;
- Optical properties of hybrid nanomaterials;
- Nanophotonic devices for energy and information technology;
- Quantum plasmonics and topological photonics;
- Applications of plasmonics in biomedicine and environmental science.

By assembling a collection of high-quality articles, this Special Issue aims to serve as a valuable resource for researchers, students, and professionals in the field of Nanophotonics and Plasmonics, promoting further advancements and collaborations.

Prof. Tiansong Deng
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Nanomaterials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • metal nanoparticles
  • nano optics
  • surface plasmon
  • plasmonic nanomaterials
  • photocatalysis
  • sensors
  • gold-based nanomaterials

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Published Papers (1 paper)

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Research

16 pages, 5891 KiB  
Article
Electromagnetic Wavefront Engineering by Switchable and Multifunctional Kirigami Metasurfaces
by Yingying Wang, Yang Shi, Liangwei Li, Zhiyan Zhu, Muhan Liu, Xiangyu Jin, Haodong Li, Guobang Jiang, Jizhai Cui, Shaojie Ma, Qiong He, Lei Zhou and Shulin Sun
Nanomaterials 2025, 15(1), 61; https://doi.org/10.3390/nano15010061 - 2 Jan 2025
Viewed by 395
Abstract
Developing switchable and multifunctional metasurfaces is essential for high-integration photonics. However, most previous studies encountered challenges such as limited degrees of freedom, simple tuning of predefined functionality, and complicated control systems. Here, we develop a general strategy to construct switchable and multifunctional metasurfaces. [...] Read more.
Developing switchable and multifunctional metasurfaces is essential for high-integration photonics. However, most previous studies encountered challenges such as limited degrees of freedom, simple tuning of predefined functionality, and complicated control systems. Here, we develop a general strategy to construct switchable and multifunctional metasurfaces. Two spin-modulated wave-controls are enabled by the proposed high-efficiency metasurface, which is designed using both resonant and geometric phases. Furthermore, the switchable wavefront tailoring can also be achieved by flexibly altering the lattice constant and reforming the phase retardation of the metasurfaces based on the “rotating square” (RS) kirigami technique. As a proof of concept, a kirigami metasurface is designed that successfully demonstrates dynamic controls of three-channel beam steering. In addition, another kirigami metasurface is built for realizing tri-channel complex wavefront engineering, including straight beam focusing, tilted beam focusing, and anomalous reflection. By altering the polarization of input waves as well as transformation states, the functionality of the metadevice can be switched flexibly among three different channels. Microwave experiments show good agreement with full-wave simulations, clearly demonstrating the performance of the metadevices. This strategy exhibits advantages such as flexible control, low cost, and multiple and switchable functionalities, providing a new pathway for achieving switchable wavefront engineering. Full article
(This article belongs to the Special Issue Nanophotonics and Plasmonics)
►▼ Show Figures

Figure 1

Figure 1
<p>Schematics of the switchable gradient metasurface based on the RS kirigami technique. The adjacent meta-atoms of the kirigami metasurface undergo reverse rotations by the stretching force. During the transformation, the meta-atoms located in the black and gray panels will rotate clockwise (CW) and counter-clockwise (CCW), respectively. In this process, not only the local lattice constant of the meta-atoms is changed but also the global phase profile of the spin-flipped anomalous modes is reformed. By altering the transformation state of the kirigami metasurface, the achieved functionalities can be flexibly switched, e.g., dual-channels of two spin-modulated anomalous modes at β = 0° (<b>a</b>), tri-channels of two anomalous modes and one normal mode at β = 22.5° (<b>b</b>), and the single-channel response of only the normal mode at β = 45° (<b>c</b>). Here, β is utilized to characterize the transformation state of the metasurface, which is defined as the intersection angle between the bottom edge of meta-atoms and the x-axis.</p> Full article ">Figure 2
<p>Design of high-efficiency composite-phase meta-atoms for the desired metasurface. (<b>a</b>) Schematic of the meta-atom array designed in the MIM configuration with a period of 8 <math display="inline"><semantics> <mrow> <mi mathvariant="normal">m</mi> <mi mathvariant="normal">m</mi> </mrow> </semantics></math>. The thicknesses of the metal layer and dielectric film are 0.035 mm and 3 mm, respectively. The other parameters are listed as follows: r = 3 mm, w = 0.85 mm, and α = 120°. The opening angle α is a controllable parameter for adjusting the resonant phase of the meta-atoms. (<b>b</b>) Simulated and measured PCR and reflection phase spectra of the sample shown in (<b>a</b>) under the illumination of u-polarized and v-polarized EM waves, respectively. (<b>c</b>,<b>d</b>) Simulated resonant phase (<b>c</b>) and PCR (<b>d</b>) of the proposed meta-atom array as the functions of the opening angle α and frequency.</p> Full article ">Figure 3
<p>Characterization of the switchable multiple-beam meta-reflector based on the RS kirigami technique. (<b>a</b>–<b>c</b>) Schematical illustrations and sample images of the metasurface in β = 0°, β = 22.5°, and β = 45° states under the illumination of LCP and RCP waves. (<b>d</b>–<b>f</b>) The reflection phase profiles of the kirigami metasurfaces in three states illuminated by the LCP and RCP waves at the frequency of 10 GHz. (<b>g</b>–<b>i</b>) Measured (symbols) and simulated (lines) normalized scattering field angular distributions of the kirigami metasurfaces in three states illuminated by LCP wave at 10 GHz. (<b>j</b>–<b>l</b>) Measured (symbols) and simulated (lines) normalized scattering field angular distributions of kirigami metasurfaces in three states illuminated by RCP wave at 10 GHz.</p> Full article ">Figure 4
<p>Experimental verification of the broadband switchable multiple beam deflection by RS kirigami metasurface. (<b>a</b>–<b>d</b>) Measured normalized scattering field intensities with LCP (<math display="inline"><semantics> <mrow> <mo>|</mo> <mfenced open="" close="&#x27E9;" separators="|"> <mrow> <mo>+</mo> </mrow> </mfenced> <mo>)</mo> </mrow> </semantics></math> and RCP (<math display="inline"><semantics> <mrow> <mfenced open="|" separators="|"> <mrow> <mfenced open="" close="&#x27E9;" separators="|"> <mrow> <mo>−</mo> </mrow> </mfenced> </mrow> </mfenced> </mrow> </semantics></math> as the functions of working frequency and reflection angle for the kirigami metasurfaces in three states illuminated by normally incident LCP or RCP wave. Here, open stars represent the positions predicted by the generalized Snell’s law.</p> Full article ">Figure 5
<p>Switchable and multifunctional complex wavefront engineering based on the RS kirigami technique. (<b>a</b>–<b>c</b>) Schematical illustrations and sample images of the kirigami metasurface in β = 0°, β = 22.5°, and β = 45° states under LCP and RCP wave illumination. (<b>d</b>–<b>f</b>) The reflection phase distributions <math display="inline"><semantics> <mrow> <msub> <mrow> <mi mathvariant="sans-serif">ϕ</mi> </mrow> <mrow> <mi mathvariant="normal">R</mi> <mi mathvariant="normal">R</mi> </mrow> </msub> <mo>(</mo> <mi mathvariant="normal">x</mi> <mo>,</mo> <mi mathvariant="normal">y</mi> <mo>)</mo> </mrow> </semantics></math> of kirigami metasurfaces in three states illuminated by the RCP wave at the frequency of 10 GHz. (<b>g</b>–<b>i</b>) The reflection phase distributions <math display="inline"><semantics> <mrow> <msub> <mrow> <mi mathvariant="sans-serif">ϕ</mi> </mrow> <mrow> <mi mathvariant="normal">L</mi> <mi mathvariant="normal">L</mi> </mrow> </msub> <mo>(</mo> <mi mathvariant="normal">x</mi> <mo>,</mo> <mi mathvariant="normal">y</mi> <mo>)</mo> </mrow> </semantics></math> of kirigami metasurfaces in three states illuminated by the LCP wave at the frequency of 10 GHz.</p> Full article ">Figure 6
<p>Characterization of the switchable and multifunctional complex wavefront engineering based on the RS kirigami technique. (<b>a</b>–<b>c</b>) Measured (symbols) and simulated (lines) normalized scattering field angular distributions with RCP of the kirigami metasurfaces in three states of β = 0°, β = 22.5°, and β = 45° illuminated by normally incident RCP wave. (<b>d</b>–<b>f</b>) Measured electric field distribution with LCP <math display="inline"><semantics> <mrow> <mo>(</mo> <msub> <mrow> <mi mathvariant="normal">E</mi> </mrow> <mrow> <mi mathvariant="normal">L</mi> <mi mathvariant="normal">C</mi> <mi mathvariant="normal">P</mi> </mrow> </msub> <mo>)</mo> </mrow> </semantics></math> in the XOZ plane for the kirigami metasurfaces in three states illuminated by normally incident LCP wave. (<b>g</b>–<b>i</b>) Measured electric field intensity distribution of the normal mode (<math display="inline"><semantics> <mrow> <msub> <mrow> <mi mathvariant="normal">E</mi> </mrow> <mrow> <mi mathvariant="normal">L</mi> <mi mathvariant="normal">C</mi> <mi mathvariant="normal">P</mi> </mrow> </msub> </mrow> </semantics></math> or <math display="inline"><semantics> <mrow> <msub> <mrow> <mi mathvariant="normal">E</mi> </mrow> <mrow> <mi mathvariant="normal">R</mi> <mi mathvariant="normal">C</mi> <mi mathvariant="normal">P</mi> </mrow> </msub> <mo>)</mo> </mrow> </semantics></math> in the XOZ plane for the kirigami metasurfaces in three states illuminated by normally incident LCP or RCP wave. Here, the frequency is fixed at 10 GHz.</p> Full article ">Figure 7
<p>Tunable beam focusing effect by RS kirigami metasurface. (<b>a</b>) Schematics of two beam focusing effects by RS kirigami metasurface illuminated by normally incident LCP wave. Here, the red and orange beams originate from the anomalous mode (focus 1) and normal mode (focus 2), respectively. (<b>b</b>) Focal position along the z direction of focus 1 as a function of β. (<b>c</b>,<b>d</b>) Focal position along both the z direction and x direction of focus 2 as a function of β, respectively. Here, the frequency is fixed at 10 GHz.</p> Full article ">
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