Article
Optics
Lujun Huang, Lei Xu, Mohsen Rahmani, Dragomir Neshev, Andrey E. Miroshnichenko
Summary: By utilizing Mie mode engineering to construct eigenvalues that avoid divergence of leaky modes, it is possible to achieve multiple high-Q resonant modes in a single nonspherical dielectric cavity. The generation of high-Q modes is attributed to suppressed radiation and simultaneously quenched electric (magnetic) field in momentum space.
ADVANCED PHOTONICS
(2021)
Article
Multidisciplinary Sciences
Yuancheng Fan, Xuan He, Fuli Zhang, Weiqi Cai, Chang Li, Quanhong Fu, Nataliia Sydorchuk, Sergey L. Prosvirnin
Summary: This article demonstrates enhanced nonlinear frequency-agile response and hysteresis tunability in a Fano-resonant hybrid metamaterial, where a ceramic cuboid is electromagnetically coupled with a metal cut-wire structure to excite high-Q Fano-resonant mode. The significant nonlinear response of the ceramic cuboid can be employed for realization of tunable metamaterials, with the trapped mode with an asymmetric Fano-like resonance beneficial for achieving notable nonlinear modulation on the scattering spectrum. The nonlinear tunability of both the ceramic structure and the ceramic/metal hybrid metamaterial extends the operation band of metamaterials, providing possibility in practical applications with enhanced light-matter interactions.
Article
Engineering, Electrical & Electronic
Ajay Kumar Pandey, Rasila R. Hirani, Surya K. Pathak
Summary: In this article, a generalized analytical and computational numerical theory is developed to investigate the dispersive behavior of dielectric-loaded radially thick helix (DLRTH). The study reveals that the proposed structure exhibits physical leaky and trapped surface wave propagation characteristics. The parametric study of helix radius and pitch angle as well as dielectric constant provides optimized parameter values for designing the structure.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Review
Materials Science, Multidisciplinary
Jiahui Xu, Yue Wu, Pinzheng Zhang, Yiming Wu, Renaud A. L. Vallee, Suli Wu, Xiaogang Liu
Summary: Dielectric nanoparticles are a new class of photonic building blocks that enhance light-matter interactions within nanometric volumes, with strong electric and magnetic responses and negligible energy dissipation. Progress has been made in designing efficient dielectric nanoresonators in recent decades.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Chemistry, Physical
Amit Bhardwaj, Vimala Sridurai, Navas Meleth Puthoor, Geetha G. Nair
Summary: This study reports on a colloidal metamaterial system consisting of sub-micron-sized (approximately 530 nm) SiO2 particles dispersed in a nematic liquid crystal. Despite the low refractive index of the particles, Mie resonances are enhanced in the system due to the anisotropic nature of the host medium, resulting in forward directional scattering. The forward scattering intensity can be tuned by switching the refractive index of the liquid crystal medium, as demonstrated by experimental observations.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Optics
Wanxin Li, Jiewen Li, Lin Yu, Yang Feng, Yong Yao, Yunxu Sun, Yi Zou, Xiaochuan Xu
Summary: In this paper, the reflection-induced mutual coupling between clock-wise and counter-clock-wise resonant modes in a subwavelength grating metamaterial waveguide ring resonator (SGMRR) was investigated. It was found that this coupling breaks the degeneracy of the two modes, leading to the formation of Autler-Townes splitting. This phenomenon could be utilized to improve the detection limit of SGMRR-based sensors.
Article
Optics
Akira Matsumori, Hiroshi Sugimoto, Minoru Fujii
Summary: A nanoantenna that can direct light to a specific direction is crucial in various applications in nanophotonics. By controlling the interference between electric and magnetic multipolar modes, directional light scattering by a nanoantenna can be achieved. This study demonstrates both theoretically and experimentally that a small perturbation, such as a notch, on a Mie resonant silicon nanosphere (Si NS) can result in a unique structure that exhibits unidirectional transverse light scattering in the visible range. The mechanism and the generation of a large transverse optical force by a notched Si NS are discussed.
LASER & PHOTONICS REVIEWS
(2023)
Article
Chemistry, Physical
Ravi Teja A. Tirumala, Sunil Gyawali, Aaron Wheeler, Sundaram Bhardwaj Ramakrishnan, Rishmali Sooriyagoda, Farshid Mohammadparast, Nishan Khatri, Susheng Tan, A. Kaan Kalkan, Alan D. Bristow, Marimuthu Andiappan
Summary: The study introduces a novel dielectric Mie resonance-enhanced photocatalysis approach to enhance the catalytic activity of metal oxide photocatalysts. It demonstrates the correlation between dielectric Mie resonances in Cu2O nanostructures and significantly higher photocatalytic rates. The results suggest that similar enhancements may be achievable with other metal oxide photocatalysts based on finite-difference time-domain (FDTD) simulations.
Article
Chemistry, Multidisciplinary
Ravi Teja Addanki Tirumala, Nishan Khatri, Sundaram Bhardwaj Ramakrishnan, Farshid Mohammadparast, Mohd Tauhid Khan, Susheng Tan, Phadindra Wagle, Sharad Puri, David N. McIlroy, Ali Kaan Kalkan, Marimuthu Andiappan
Summary: Controlling and tuning activity and selectivity in catalysis are crucial for energy-efficient and environmentally friendly catalytic processes. Plasmonic and dielectric Mie resonance-mediated photocatalyses have shown promise in this regard, although reports on tunable product selectivity are limited. Distinguishing the desired Mie resonance-mediated effects from the undesired light-induced heating effect is a major challenge.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Optics
Chunchao Wen, Jianfa Zhang, Shiqiao Qin, Zhihong Zhu, Wei Liu
Summary: This study investigates the extremizations of momentum-space scattering with respect to varying incident directions of plane waves from the perspective of quasi-normal modes (QNMs). It reveals that for effective single-QNM excitations, scatterings are maximized along those directions where the QNM radiation reaches its maximum, with matched incident and radiation polarizations. The principles revealed are protected by fundamental laws of reciprocity and energy conservation, which can be further expanded and applied for other branches of wave physics.
LASER & PHOTONICS REVIEWS
(2023)
Article
Nanoscience & Nanotechnology
Ravi Teja Addanki Tirumala, Sundaram Bhardwaj Ramakrishnan, Farshid Mohammadparast, Nishan Khatri, Swetha Mahalakshmi Arumugam, Susheng Tan, A. Kaan Kalkan, Marimuthu Andiappan
Summary: Dye-sensitized photocatalysis is a promising approach for developing visible and near-infrared light-responsive photocatalysts. However, current systems suffer from low light absorption efficiency. Recent research has shown that plasmonic metal nanostructures can enhance light absorption efficiency through plasmonic Mie resonance-enhanced dye-sensitization. In this study, dielectric Mie resonance-enhanced dye sensitization in cuprous oxide nanostructures is reported, showing significantly higher dye-sensitization rates compared to nanostructures without dielectric Mie resonance. This approach can also be applied to design a wide range of other dye-sensitized photocatalysis systems.
ACS APPLIED NANO MATERIALS
(2022)
Article
Optics
Giacomo Manzato, Maria Caterina Giordano, Matteo Barelli, Debasree Chowdhury, Marco Centini, Francesco Buatier de Mongeot
Summary: Flat optics nanogratings supported on thin free-standing membranes combine narrowband waveguided modes and Rayleigh anomalies for sensitive and tunable biosensing. Sharp waveguided modes and lattice resonances were achieved on high-refractive index Si3N4 membranes using lithographic nanogratings based on plasmonic nanostripes. These optical modes were fine-tuned over a broadband Visible and Near-Infrared spectrum, supporting strong near-field amplification and enabling versatile biosensing applications.
Review
Physics, Multidisciplinary
Lujun Huang, Lei Xu, David A. Powell, Willie J. Padilla, Andrey E. Miroshnichenko
Summary: All-dielectric metamaterials and metasurfaces are important for manipulating electromagnetic waves and enhancing light-matter interaction. Leaky modes, which are represented by complex eigenfrequency, play a dominant role in the optical properties of dielectric nanoparticles and metasurfaces. This review provides an overview of recent progress on leaky modes from fundamental physics to applications, including perfect light absorption, solar cells, photodetectors, enhanced light emission, and nonlinear harmonic generation.
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS
(2023)
Article
Physics, Applied
Yongjun Yu, Pingyuan Sun, Yunfan Wang, Zhaoyang Chen
Summary: The proposed ultra-wideband microwave metamaterial absorber features a sandwich structure with a top metal pattern arranged periodically on a copper background. Combining Fe-Co composites and metamaterials, it effectively solves the narrow-band problem of microwave absorption, achieving over 90% absorptivity in the 2.16-18 GHz frequency band for normal incidence. The absorber's performance is not sensitive to the polarization of incident waves.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Hidemasa Negoro, Hiroshi Sugimoto, Tatsuki Hinamoto, Minoru Fujii
Summary: A solution-based bottom-up process is developed to produce one- and two-dimensional arrays of densely packed spherical nanoparticles (NPs) of crystalline silicon (Si), which have the lowest order Mie resonance in the visible range. The arrays are formed using a template-assisted self-assembly method and transferred to an arbitrary substrate. The proper formation of Si NP arrays is demonstrated through polarization-resolved scattering spectra measurements and numerical simulations. The results show strong modification of scattering spectra due to near-field coupling of the electric dipole (ED) modes and the Kerker effect.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Optics
Yeong Hwan Ko, Kyu Jin Lee, Robert Magnusson
Article
Optics
Shanwen Zhang, Yeong Hwan Ko, Robert Magnusson
Article
Optics
Katsuaki Yamada, Kyu Jin Lee, Yeong Hwan Ko, Junichi Inoue, Kenji Kintaka, Shogo Ura, Robert Magnusson
Article
Optics
Hafez Hemmati, Yeong Hwan Ko, Robert Magnusson
Article
Optics
K. J. Lee, Y. H. Ko, N. Gupta, R. Magnusson
Article
Optics
Y. H. Ko, N. Gupta, R. Magnusson
Proceedings Paper
Engineering, Aerospace
Robert Magnusson, Hafez Hemmati, Daniel John Carney, Kyu Jin Lee, Yeong Hwan Ko, Sun-Goo Lee
2019 IEEE AEROSPACE CONFERENCE
(2019)
Proceedings Paper
Optics
Robert Magnusson, Sun-Goo Lee, Kyu J. Lee, Hafez Hemmati, Daniel J. Carney, Pawarat Bootpakdeetam, Yeong Hwan Ko
INTEGRATED OPTICS: DEVICES, MATERIALS, AND TECHNOLOGIES XXIII
(2019)
Proceedings Paper
Optics
Ren-Jie Chen, Yeong Hwan Ko, Jae Woong Yoon, Robert Magnusson
2018 IEEE RESEARCH AND APPLICATIONS OF PHOTONICS IN DEFENSE CONFERENCE (RAPID)
(2018)
Proceedings Paper
Nanoscience & Nanotechnology
Robert Magnusson, Kyu J. Lee, Hafez Hemmati, Yeong Hwan Ko, Brett R. Wenner, Jeffery W. Allen, Monica S. Allen, Susanne Gimlin, Debra Wawro Weidanz
FRONTIERS IN BIOLOGICAL DETECTION: FROM NANOSENSORS TO SYSTEMS X
(2018)
Proceedings Paper
Materials Science, Coatings & Films
Yeong Hwan Ko, Robert Magnusson
NANOSTRUCTURED THIN FILMS X
(2017)
Proceedings Paper
Optics
Robert Magnusson, Yeong Hwan Ko
30TH ANNUAL CONFERENCE OF THE IEEE PHOTONICS SOCIETY (IPC)
(2017)
Proceedings Paper
Nanoscience & Nanotechnology
Robert Magnusson, Yeong Hwan Ko
2017 PHOTONICS NORTH (PN)
(2017)
Proceedings Paper
Engineering, Electrical & Electronic
Katsuaki Yamada, Kosuke Asai, Yeong Hwan Ko, Kenji Kintaka, Kyu Jin Lee, Junichi Inoue, Shogo Ura, Robert Magnusson
2016 INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE (ISLC)
(2016)