Article
Engineering, Multidisciplinary
Ugur Cem Hasar, Yunus Kaya, Hamdullah Ozturk, Mehmet Ertugrul, Omar Mustafa Ramahi
Summary: An effective microwave method is developed to extract the electromagnetic properties of bianisotropic metamaterial (MM) slabs. This non-iterative method utilizes only the one-port scattering parameter measurements, making it useful for vector network analyzers that perform only one-port S-parameter measurements. The method is tested on bianisotropic MM slabs formed by C-shaped resonators using an X-band rectangular waveguide setup, and the possible error caused by any gap between the short-circuit termination and the MM slab is evaluated.
Article
Engineering, Multidisciplinary
C. Zebiri, M. L. Bouknia, D. Sayad, I. Elfergani, Moustafa H. Aly, Preecha Yupapin, Sarawoot Boonkirdram, Arpan Desai, J. Rodriguez
Summary: This paper surveys a new class of electromagnetic materials, focusing on the application of the bianisotropic medium in antenna design. The behavior of the magnetoelectric elements in the medium is investigated, revealing their effects on the input impedance and mutual coupling of a printed dipole antenna. The research highlights the significance of this medium in device matching, as well as its impact on input impedance and antenna array coupling.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
M. Ananda Reddy, R. Pandeeswari, Seok-Bum Ko
Summary: This study presents the use of Non-bianisotropic Complementary Split Ring Resonator (NBCSRR) and cylindrical metal vias to create a bandstop filter with electromagnetic bandgap behavior. The compact filter structure achieved sub-wavelength operation using NBCSRR. The prototype filter was fabricated and tested, showing good agreement between the measured and simulated results. The filter exhibits high rejection levels in the X band, ranging from 8.8GHz to 9.3GHz.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2023)
Article
Materials Science, Multidisciplinary
Maria Poleva, Kristina Frizyuk, Kseniia Baryshnikova, Andrey Evlyukhin, Mihail Petrov, Andrey Bogdanov
Summary: In this Letter, the theory of bianisotropy is generalized beyond the dipole response to cases of arbitrary high-order multipole resonances. The study demonstrates that bianisotropy is fully connected to the geometrical structure of meta-atoms and caused exclusively by the absence of their inversion symmetry. The developed theory provides a crucial insight into the scattering properties of nanoantennas and meta-atoms.
Article
Engineering, Multidisciplinary
Mohamed Lamine Bouknia, Chemseddine Zebiri, Djamel Sayad, Issa Elfergani, Mohammad Matin, Arpan Desai, Jonathan Rodriguez, Tathababu Addepalli, Hasan Abobaker
Summary: This paper presents an analytical study on the reciprocal metamaterial gyro-bianisotropy effects on the input impedance of a dipole antenna. The study uses numerical resolution and spectral method of moments to analyze the impact of chiral medium and Tellegen medium on resonant length and input impedance, as well as the features of combining the two cases to form more general complex media.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Xueyan Chen, Johnny Moughames, Qingxiang Ji, Julio Andres Iglesias Martinez, Huifeng Tan, Gwenn Ulliac, Vincent Laude, Muamer Kadic
Summary: This article introduces the advantages of the newly designed lightweight elastic isotropic bending-dominated truss lattice structure and its superior performance in energy absorption. Compared to other lattice structures, significant improvements have been achieved in various aspects.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2022)
Article
Materials Science, Multidisciplinary
Chengyao Zhang, Shuai Zhang, Yuchen Zhu, Haishen Zhang, Mingbo Zong, Zhiguo Wen, Chi Li
Summary: In recent years, there has been a growing interest in the research and applications of terahertz (THz) radiation, which is a new type of radiation source. Metamaterials, artificial composite electromagnetic materials, have unique physical properties in the terahertz band, unlike natural materials. This study proposes a tunable toroidal dipole device using a perovskite terahertz metamaterial that combines perovskite with organic and inorganic hybrid halide perovskite films. The research is significant for the design of terahertz devices such as filters and modulators.
Article
Nanoscience & Nanotechnology
Jingyi Zhang, Yu Wang, Huaxia Deng, Chunyu Zhao, Yanan Zhang, Haiyi Liang, Xinglong Gong
Summary: The SM bianisotropic MSE combines high aspect ratio shape anisotropy and material anisotropy to achieve peculiar field-direction-dependent multimodal transformation. This material can be used to create flexible logic switches and ultrasoft magnetic manipulators.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Jian Qiao, Yufu Liu
Summary: In this study, a broadband metamaterial absorber based on a single square-loop resistive frequency selective surface was developed and demonstrated to have scalable high-temperature absorption. By utilizing a mixture of MoSi2 powder, Al powder, and water glass, the RFSS arrays showed a significant decrease in sheet resistance and high broadband absorption performance. The experimental and simulation results agreed well under certain conditions, providing promising potential for practical applications.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Tingting Yuan, Jingwen Wu, Xujun Xu, Jianjun Liu, Yong Du
Summary: Based on the controllable conductivity of photosensitive semiconductors and the phase transition characteristic of vanadium oxide, a metamaterial absorber with switchable single-band and dual-band absorption in the terahertz region is designed. By adjusting the external pump light power and the conductivity of gallium arsenide and vanadium oxide, the absorptivity can be increased to above 99%. The designed absorber can be switched from triple-band to single-band absorption by changing the conductivity state of gallium arsenide and vanadium oxide. The absorber also exhibits excellent absorption characteristics for both TE and TM fields in a wide-angle incidence range.
RESULTS IN PHYSICS
(2023)
Article
Multidisciplinary Sciences
Tania Tamoor, Nosherwan Shoaib, Fahad Ahmed, Tayyab Hassan, Abdul Quddious, Symeon Nikolaou, Akram Alomainy, Muhammad Ali Imran, Qammer H. Abbasi
Summary: This paper introduces a flexible bianisotropic metasurface with omega-type coupling, which exhibits different behaviors when excited from the forward and backward sides. The metasurface provides absorption and partial reflection properties, along with high out-of-band transmission rates, suitable for antenna gain enhancement and RCS reduction.
SCIENTIFIC REPORTS
(2021)
Review
Chemistry, Multidisciplinary
Mao-Mao Zhang, Bao-Le Qu, Bin Shi, Wen-Jing Xiao, Liang-Qiu Lu
Summary: This article introduces the application of metal-catalyzed high-order dipolar annulation reactions in the construction of medium-sized heterocycles. These reactions proceed through stepwise reaction pathways, different from the classical high-order pericyclic reactions. The use of chiral organometallic catalysts can also construct chiral medium-sized heterocycles.
CHEMICAL SOCIETY REVIEWS
(2022)
Article
Nanoscience & Nanotechnology
Akanksha Ninawe, Priyanka Suri, Zhuolin Xie, Xianfan Xu, Ambarish Ghosh
Summary: The study reports a large chiro-optical response from a non-periodic dielectric helical nanostructured film, achieved through a scalable and simple fabrication technique. This response was found to be strongly dependent on the ellipticities of the metal nanoparticles, with experimentally realized dissymmetry factor being the largest reported for wafer-scalable chiro-plasmonic samples. The computational model developed in this study accounts for all variations caused by the fabrication process and demonstrates the potential applications in manipulating optical polarization and enhancing sensing and detection of chiral molecules.
Article
Engineering, Mechanical
Chang Quan Lai, Kalaimani Markandan, Zhen Lu
Summary: The study investigates the elastic modulus and Poisson's ratio of a 3D anti-tetrachiral (3ATC) metamaterial design, finding that as the number of unit cells in the lattice decreases, the structure undergoes a symmetrical-to-asymmetrical transition leading to significant variations in Poisson's ratio at different relative densities.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Physics, Fluids & Plasmas
K. S. Krishnamurthy, D. S. Shankar Rao, Madhu B. Kanakala, Channabasaveshwar Yelamaggad
Summary: This study investigates the effect of low-frequency electric fields on elastic dipoles in twist-bend nematic droplets, finding that the dipoles shift towards the negative electrode in static fields and oscillate in AC fields. Moreover, the translational velocity of the dipoles increases linearly with frequency and the diameter of the droplets, showing a slightly nonlinear variation with increasing applied voltage at lower frequencies.
Article
Nanoscience & Nanotechnology
Soren Im Sande, Sergey I. Bozhevolnyi, Fei Ding
Summary: In this work, single-celled metasurfaces are designed and experimentally demonstrated to achieve broadband and spin-multiplexed holograms. The phase modulation relies on the geometric phase provided by a high-performance nanoscale half-wave plate operating in reflection. Four different multiplexing strategies are implemented and systematically assessed in terms of background levels, image fidelities, hologram efficiencies, and polarization conversion ratios.
Article
Physics, Multidisciplinary
S. Bozhevolnyi, I. M. Suslov
Summary: Localization of electrons in 1D disordered systems is often described using the random phase approximation, assuming uniform distributions of phase f and Φ in the transfer matrix. However, in the general case, the random phase approximation is not valid and the evolution equations are written in terms of the Landauer resistance Φ and the combined phases Φ = Φ - f and Φ = Φ + f. The distribution of phase Φ exhibits an unusual phase transition at the point Φ0.
Review
Materials Science, Multidisciplinary
Yinhui Kan, Sergey I. I. Bozhevolnyi
Summary: Spontaneous photon emission can be significantly modified by using quantum emitters in nanostructured environment, resulting in enhanced emission rates and directed single-photon beams with well-defined polarization states. Recent advances in single-photon generation engineering demonstrate important possibilities for quantum information technologies. Optical metasurfaces offer complete control over optical fields and have the potential to shape single-photon emission. This article provides an overview of recent progress in utilizing quantum optical metasurfaces for enhanced and directed emission of single photons with specified polarization properties.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Lili Gui, Chuanshuo Wang, Fei Ding, Hao Chen, Xiaosheng Xiao, Sergey I. Bozhevolnyi, Xiaoguang Zhang, Kun Xu
Summary: In this study, a wavelength-tunable vortex fiber laser assisted by a metasurface is proposed and demonstrated. The laser can directly generate orbital angular momentum (OAM) beams with customizable topological charges. By combining a broadband gap-surface plasmon metasurface and an intracavity tunable filter, the laser's center wavelength can be continuously tuned from 1015 nm to 1075 nm, which is nearly twice the range of other reported vortex fiber lasers.
Article
Nanoscience & Nanotechnology
Christopher Damgaard-Carstensen, Sergey I. Bozhevolnyi
Summary: In this work, electro-optically controlled optical metasurfaces for reflection modulation are demonstrated. By identifying a suitable low-loss waveguide mode and exploiting its resonant excitation, the modulation of reflected light power with superior characteristics is achieved compared to previous research. The electro-optic Pockels effect in a 300 nm-thick lithium niobate (LN) film is utilized to realize fast and efficient light modulation.
Article
Chemistry, Multidisciplinary
Anders Pors, Kaspar G. Rasmussen, Rune Inglev, Nina Jendrike, Amalie Philipps, Ajenthen G. Ranjan, Vibe Vestergaard, Jan E. Henriksen, Kirsten Norgaard, Guido Freckmann, Karl D. Hepp, Michael C. Gerstenberg, Anders Weber
Summary: The invasiveness of glucose measurement in diabetes care hinders effective therapy and identification of at-risk individuals. Lack of calibration stability has limited the practical use of non-invasive glucose monitoring. This study introduces a Raman-based and portable non-invasive glucose monitoring device, which remains accurate for at least 15 days following calibration. Its use in a clinical study of 160 subjects with diabetes demonstrates promising real-life results and eliminates doubts about the practicality of non-invasive glucose monitoring.
Article
Chemistry, Multidisciplinary
Yinhui Kan, Xujing Liu, Shailesh Kumar, Sergey I. Bozhevolnyi
Summary: This paper develops a holography-based approach to flexibly design QE-coupled metasurfaces on-chip, which generate far-field quantum emission with specific spin and orbital angular momenta. The method enables multichannel quantum emission with multiple degrees of freedoms, providing a powerful platform for quantum nanophotonics.
Article
Chemistry, Multidisciplinary
Xujing Liu, Yinhui Kan, Shailesh Kumar, Liudmilla F. Kulikova, Valery A. Davydov, Viatcheslav N. Agafonov, Changying Zhao, Sergey I. Bozhevolnyi
Summary: This article introduces a new design for ultracompact single-photon sources, which can generate linearly polarized vortex beams using quantum emitter-coupled metasurfaces. The authors successfully demonstrate on-chip single-photon generation and realize the multiplexing of different topological charges of orthogonal linearly polarized single photons through multiple channels, demonstrating their entanglement. This research suggests that ultracompact quantum emitter-coupled metasurfaces have the potential to be a new quantum optics platform for chip-integrated high-dimensional single-photon sources.
ADVANCED MATERIALS
(2023)
Article
Physics, Multidisciplinary
Henrik Parsamyan, Torgom Yezekyan, Khachatur Nerkararyan, Sergey Bozhevolnyi
Summary: Scanning near-field optical microscopy (SNOM) is a powerful optical technique for visualizing surface nanostructures and fields beyond the diffraction limit. The resolution of SNOM is theoretically unlimited but limited in practice due to background light scattering. This article proposes using a "dark" SNOM probe to suppress background scattering and improve sensitivity and resolution for nano-optical characterization.
NEW JOURNAL OF PHYSICS
(2023)
Article
Energy & Fuels
Anisha Chirumamilla, Fei Ding, Yuanqing Yang, Murugan Senthil Mani Rajan, Sergey I. Bozhevolnyi, Duncan S. Sutherland, Kjeld Pedersen, Manohar Chirumamilla
Summary: In this study, a simple large-area nanofabrication method was proposed to create tungsten nanodisc spectrally-selective emitters with high emissivity and thermal stability. The method showed invariance to changes in polarization and incidence angles. This research is significant in advancing the implementation of photonic/plasmonic thermal emitters in high-temperature stable and efficient thermal energy harvesting systems.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Multidisciplinary Sciences
Danylo Komisar, Shailesh Kumar, Yinhui Kan, Chao Meng, Liudmila F. Kulikova, Valery A. Davydov, Viatcheslav N. Agafonov, Sergey I. Bozhevolnyi
Summary: This article presents a method for channeling and controlling the emission direction and polarization characteristics of single photons using plasmonic holographic metasurfaces. Experimental results demonstrate the efficient generation of two well-collimated single-photon beams on a chip, with independent direction and polarization control for each channel by coupling quantum emitters to plasmonic holographic metasurfaces.
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Xujing Liu, Yinhui Kan, Shailesh Kumar, Danylo Komisar, Changying Zhao, Sergey I. Bozhevolnyi
Summary: By using specially designed anisotropic nanodimers, we achieved nonradiative coupling between a quantum emitter and a surface plasmon polariton, allowing the generation of single photons with spin and orbital angular momenta encoded. We demonstrated the on-chip generation of well-collimated, circularly polarized, and high purity single-mode vortex beams with different topological charges and high single-photon purity. This approach can be extended to produce multiple single-photon radiation channels with different polarizations, enabling advanced quantum photonic technologies.
Article
Quantum Science & Technology
Yinhui Kan, Sergey I. Bozhevolnyi, Shailesh Kumar
Summary: Nanoantennas and nanocavities are widely used for quantum emission manipulation, and this study explores the use of silver nanocube dimers on silver substrates to achieve large Purcell enhancement. The relationship between the size and separation gap of the nanocube dimers and the resulting enhancement is investigated, with a maximum enhancement of 6.4 x 106 observed. The experimental realization of large Purcell enhancements is demonstrated using atomic force microscopy and prefabricated dielectric brick dimers, providing a promising method for designing and realizing single photon sources.
ADVANCED QUANTUM TECHNOLOGIES
(2023)
Article
Nanoscience & Nanotechnology
Saskia Fiedler, Sergii Morozov, Danylo Komisar, Evgeny A. A. Ekimov, Liudmila F. F. Kulikova, Valery A. A. Davydov, Viatcheslav N. N. Agafonov, Shailesh Kumar, Christian Wolff, Sergey I. I. Bozhevolnyi, N. Asger Mortensen
Summary: Impurity-vacancy centers in diamond provide a class of robust photon sources with versatile quantum properties. The ensembles of color centers have tunable photon-emission statistics and their emission properties can be controlled by different types of excitation. Electron-beam excitation can synchronize the emitters' excitation and control the second-order correlation function g(2)(0), as confirmed by experimental results in this letter. Such a photon source based on an ensemble of few color centers in a diamond crystal offers a highly tunable platform for room temperature informational technologies.
Article
Nanoscience & Nanotechnology
Torgom Yezekyan, Vladimir A. Zenin, Martin Thomaschewski, Radu Malureanu, Sergey I. Bozhevolnyi
Summary: The demand for broadband near-infrared photodetections with high responsivity is increasing, but its realization remains a technological challenge. We demonstrate a simple design approach to fabricate a Ge photodetector that significantly enhances absorption and detector responsivity for a wide range of wavelengths. Our approach utilizes Ge disks of different diameters, resulting in nearly two orders of magnitude improvement compared to unstructured Ge photodetectors.
