Article
Chemistry, Multidisciplinary
Kai-Xin Zhang, Jian-Da Shao, Guo-Hang Hu, Ying-Jie Chai, Hong-Bo He, Mei-Ping Zhu, Da-Wei Li, Xiao-Feng Liu
Summary: This study focused on the fabrication of optical metamaterials using femtosecond laser processing. A suitable metamaterial was designed for this purpose, and the interaction between femtosecond laser and metal-dielectric-metal fishnet stacks was thoroughly investigated, revealing thermal melting and stress break processing mechanisms. The fishnet optical metamaterial was successfully fabricated using the femtosecond laser-induced stress break technique, with high resolution and speed capabilities.
Article
Optics
Yu-Han Chang, Vanna Chrismas Silalahi, Yun-Ting Yang, Yu-shiang Wen, Watson Kuo
Summary: The study presents a systematic investigation of resonator coupling between split-ring resonators (SRRs) and complementary split ring resonators (CSRRs) for any orientation combination. The method estimates the coupling strength through a linear combination of periodic functions based on two orientation angles, with a sinusoidal expansion of up to the 3rd order. This approach provides a satisfactory explanation of the band structure of SRR chains using a microwave-hopping model, facilitating the exploration of exotic photonic band structures based on tight-binding theory.
Article
Materials Science, Multidisciplinary
Muhammad Hafidzurrahman, Hadi Teguh Yudistira, Teuku Meurah Indra Riayatsyah, Adhitya Gandaryus Saputro
Summary: Multilayer metamaterials have been used to tailor material properties, but the alignment of each layer remains a critical challenge. This study focuses on the performance of negative refractive index using a touching circular unit cell of single-layer metamaterials, with varying dielectric thickness. Simulation and experimental results reveal that negative refractive index values occur for each dielectric thickness variation in single-layer metamaterials. The peaks of negative refractive index values shift with the varied dielectric thickness, and although there are disparities between simulation and experimental results due to imperfect fabrication samples, the trend in the simulation result is similar to the experimental result.
Article
Physics, Applied
Feng Yin, Kelan Yan, Liming Shen, Ningzhong Bao
Summary: This study reports the preparation of metallic ferromagnetic selenospinel composites using a solid-state reaction process, successfully demonstrating double negative properties with negative electric permittivity and negative magnetic permeability. The research provides theoretical insights and mechanisms for understanding and tuning the properties of double negative metamaterials.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Meng Liu, Eric Plum, Hua Li, Shaoxian Li, Quan Xu, Xueqian Zhang, Caihong Zhang, Chongwen Zou, Biaobing Jin, Jiaguang Han, Weili Zhang
Summary: Chiral media exhibit optical activity by differential retardation and attenuation of circularly polarized electromagnetic waves. Control of chirality, optical activity, and refractive index is demonstrated using a terahertz metamaterial based on 3D-chiral metallic resonators and achiral vanadium dioxide inclusions. The chiral structure shows pronounced optical activity and a negative refractive index at room temperature, while becoming achiral and having a positive refractive index upon heating. The chiral response originates from magnetic coupling and transitions to electric dipole excitations. Rotationally symmetric design allows the structure to function as a tunable polarization rotator, adjustable linear polarization converter, and switchable circular polarizer.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Gurudeo Nirala, Tarun Katheriya, Dharmendra Yadav, Shukdev Pandey, Shail Upadhyay
Summary: The solid-state ceramic method was used to synthesize Sr2Mn1-xNbxO4 compounds, and impurities were found in certain compositions. The permittivity and AC conductivity experiments showed different behaviors at different temperatures, possibly due to plasmonic oscillations of charge carriers. This indicates the potential of the Sr2Mn1-xNbxO4 system for switching action.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Jiaying Wang, Florian Allein, Cecile Floer, Nicholas Boechler, James Friend, Oscar Vazquez-Mena
Summary: This study presents a novel technology to fabricate acoustic metamaterials in water using microstructured silicon chips, enabling their operation in the MHz range for applications in biomedical ultrasound. The metamaterials are formed by assembling silicon chip unit cells that incorporate silicon nitride membranes and Helmholtz resonators. Finite-element method simulations and experimental measurements confirm the negative-index behavior of the material in the 0.25-0.35 MHz range. This work opens up new possibilities for achieving relevant frequencies for biomedical ultrasound applications using silicon technology microfabrication.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Optics
Rensheng Xie, Xudong Bai, Ji Liu, Xiong Wang, Yinuo Zheng, Zhen Gu, Hualiang Zhang, Chengbin Jing, Jun Ding, Junhao Chu
Summary: This study proposes a single-cell metasurface with independent complex-amplitude modulations at two discrete frequencies, and verifies its ability to reconstruct multiple Chinese characters at the imaging plane through a designed bi-spectral meta-hologram.
Article
Crystallography
Ibuki Takegami, Tsutomu Nagayama, Seiji Fukushima, Toshio Watanabe
Summary: This paper introduces a design theory for electromagnetic metamaterials with negative refractive indices using a distributed transmission-line model, and applies it to the design of acoustic metamaterials. The design formulas and calculations with small adjustments are used to rigorously design the unit cell structures of metamaterials with negative refractive indices and background media with positive refractive indices. The validity of the design theory is demonstrated through calculations, eigenvalue analysis, and full-wave simulations.
Article
Mechanics
F. Capone, G. Massa
Summary: This study investigates the onset of thermal convection in a bi-disperse porous medium with uniform rotation and horizontal isotropy, considering the Vadasz term. Linear instability analysis shows that the Vadasz term allows convection to start in an oscillatory state, but has no effect on convection starting in a stationary motion.
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2021)
Article
Mathematics, Applied
K. B. Ustinov, D. M. Idrisov
Summary: Exact analytical solutions for three configurations of composed bi-layers with semi-infinite interface cracks have been extended to cover a wider range of elastic and geometric parameters using a scaling technique. The problems involve a total of 10 constants, but the number of dimensionless constants can be reduced to 8 by choosing proper scales. Solutions are obtained for cases involving different layer materials and thicknesses, as well as stress intensity factors in terms of integral characteristics of external loads.
ZAMM-ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK
(2021)
Article
Optics
Lingling Zhang, Lin Ke, Qing Wang
Summary: This study explores the dispersion relation and modulation instability in one-dimensional bi-periodic optical lattice of negative index metamaterials waveguide arrays. It reveals that plateau formations occur at a coupling coefficient of around 0.25, with their width increasing as the nonlinear and longitudinal modulation depth increase. The phase shift has minimal impact on the modulation instability gain spectrum under specific coefficient values that facilitate plateau generation.
Article
Physics, Multidisciplinary
Xinyu Li, Qian Kong, Xinglin Wang, Ming Shen
Summary: The transmission properties of Fibonacci quasi-periodic photonic crystals with negative zero-positive index metamaterials (NZPIM) are systematically studied. An asymmetric band gap appears near the optical Dirac point (DP) only under oblique incidence due to linear dispersion. Zero-(n) over bar gaps and Bragg gaps exist when the refractive indexes of NZPIM are negative and positive, respectively. Gaps induced by total reflection on both sides of the DP gap are also obtained. The corresponding Goos-Hanchen (GH) shifts and phase variations are analyzed in detail, showing their dependence on the incident angle, number of periods, and layer thickness.
COMMUNICATIONS IN THEORETICAL PHYSICS
(2023)
Article
Energy & Fuels
Yuwei Jin, Moses Amoasi Acquah, Mingyu Seo, Samira Ghorbanpour, Sekyung Han, Taeyoung Jyung
Summary: The steady-state voltage security region (SVSR) is an important criterion for evaluating the power system's operation security and safety margin. However, its application to electric vehicle (EV) proliferation has not been explored. To address this, we propose a load margin index (LMI) based on SVSR considering uncertainties, and use it to assess the impact of EV proliferation. A bi-layer optimal EV scheduling model is employed to solve a dispatching plan for EV aggregators in the upper layer, and model each EV's charging/discharging strategy in the lower layer. A real-time scheduling plan is also used to adjust the day-ahead scheduling based on forecast errors. A case study on the IEEE-33 node distribution network confirms the feasibility and effectiveness of the proposed method.
Article
Engineering, Mechanical
L. Tiam Megne, C. B. Tabi, J. A. Ambassa Otsobo, C. M. Muiva, T. C. Kofane
Summary: This paper presents an explicit derivation of a (3+1)-dimensional cubic-quintic-septic complex Ginzburg-Landau equation, which describes the dynamics of dissipative light bullets in nonlinear metamaterials. Numerical simulations show the evolution of various dissipative optical bullets in metamaterials with different topological charges. It is found that with the right choice of higher-order parameters, the stability of the system can be achieved.
NONLINEAR DYNAMICS
(2023)
Article
Engineering, Electrical & Electronic
Xiang He, Steve Benoit, Ron Kaspi, Steven R. J. Brueck
IEEE JOURNAL OF QUANTUM ELECTRONICS
(2016)
Article
Chemistry, Multidisciplinary
Vijay Saradhi Mangu, Marziyeh Zamiri, S. R. J. Brueck, Francesca Cavallo
Article
Engineering, Electrical & Electronic
Steve Benoit, S. R. J. Brueck
IEEE PHOTONICS JOURNAL
(2018)
Article
Optics
Yuliya Kuznetsova, Alexander Neumann, S. R. J. Brueck
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
(2012)
Article
Nanoscience & Nanotechnology
S. C. Lee, Y-B Jiang, M. Durniak, C. Wetzel, S. R. J. Brueck
Article
Optics
Shima Nezhadbadeh, A. Neumann, Payman Zarkesh-Ha, S. R. J. Brueck
Article
Optics
S. C. Lee, S. Krishna, Y-B Jiang, S. R. J. Brueck
Summary: A novel midwave infrared photodetector with plasmonic coupling for enhanced responsivity is reported. The detector features broadband absorption and narrowband SPW enhancement, making it suitable for detecting midwave infrared light.
Article
Optics
P. Dey, A. Neumann, S. R. J. Brueck
Summary: Imaging Interferometric microscopy (IIM) is a technique that combines multiple sub-images to enhance resolution, with methods proposed in this study to address challenges like phase deviations and frequency response. The proposed correction methods were found effective in improving image quality, as validated through simulation and experiments.
Article
Optics
S. C. Lee, S. R. J. Brueck
Summary: The lineshape of extraordinary optical transmission (EOT) associated with surface plasma waves (SPWs) excited by a metal photonic crystal (MPC) is analyzed. The resonance energy of the fundamental SPW is extracted through Fano interference and its accuracy is verified experimentally. Other lineshape parameters and the Fano interference condition for EOT are determined.
Article
Engineering, Electrical & Electronic
Vineeth Sasidharan, Alexander Neumann, S. R. J. Brueck
Summary: In this study, large-area, oblique-incidence interferometric nanopatterning was demonstrated using a low-cost multilongitudinal-mode diode laser as the source and a spin-on-glass based diffraction-phase-mask grating beam splitter. By introducing a dual-grating-mask, achromatic interferometric scheme, the gap dimension between the mask and sample was extended to easily accessible scales, enabling the fabrication of uniform nanopatterns with a periodicity of 600 nm. This scalable technique has the potential for large-area nanopatterning applications.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
(2021)
Article
Optics
Xuemei Wang, Vineeth Sasidharan, Alexander Neumann, Payman Zarkesh-Ha, S. R. J. Brueck
Summary: An integrable on-chip spectrometer based on a transversely-chirped-grating waveguide coupler is demonstrated for the 400-700 nm visible spectral range. The spectrometer achieves a resolution of approximately 1.2 nm without any signal processing reconstruction.
Article
Engineering, Electrical & Electronic
Xuemei Wang, Collin Burt, Payman Zarkesh-Ha, Alexander Neumann, S. R. J. Brueck
Summary: This paper introduces an integrated plenoptic device/people occupancy counting sensor for energy conservation in HVAC systems. The sensor uses time-of-flight measurements and demonstrates good immunity to background light sources. It is realized on a commercial silicon-based integrated-photonics foundry line, providing a pathway to volume manufacturing.
IEEE PHOTONICS JOURNAL
(2022)
Article
Engineering, Biomedical
Joseph D. Gleason, Meeko Oishi, Michelle Simkulet, Arunas Tuzikas, John P. Hanifin, George C. Brainard, S. R. J. Brueck, Robert F. Karlicek, Lee K. Brown
IEEE JOURNAL OF TRANSLATIONAL ENGINEERING IN HEALTH AND MEDICINE
(2019)
Proceedings Paper
Engineering, Electrical & Electronic
Christoph J. M. Stark, Theeradetch Detchprohm, Christian Wetzel, S. C. Lee, S. R. J. Brueck
2012 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2012)
Proceedings Paper
Biophysics
E. R. Brown, W. Zhang, E. A. Mendoza, Y. Kuznetsova, S. R. J. Brueck, M. Rahman, M. L. Norton
OPTICAL INTERACTIONS WITH TISSUE AND CELLS XXIII
(2012)
