Article
Materials Science, Multidisciplinary
Yujing Ran, Zhaotan Jiang, Zhi Wang
Summary: In this study, all-nitride perfect broadband metamaterial absorbers were designed and studied, which achieve high absorption performance within specific wavelength ranges and exhibit polarization independence and high absorption at large incidence angles. These all-nitride absorbers have promising potential in related applications.
RESULTS IN PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Wanqiao Huang, Zhenghou Zhu
Summary: This paper proposes a new design method for metamaterial absorbers composed of magnetic composites with a periodic structure. The absorber achieves an effective absorption bandwidth of 13.4 GHz, from 4.6 GHz to 18 GHz, with a thickness of 3.5 mm (0.05 lambda max). Analysis of the electric field distribution and surface current reveals absorption peaks at 6.1 GHz and 10.8 GHz, with reflection losses of -20 dB and -15.6 dB, respectively. Actual samples were prepared and their reflection losses were measured, confirming the simulation results.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Wenjie Chen, Junjie Zhan, Yi Zhou, Rui Chen, Yubo Wang, Yungui Ma
Summary: The research proposes a comprehensive stealth technology that can simultaneously handle microwave absorption and adjustable visible and near-infrared spectra to adapt to different environments. The designed artificial coat can absorb over 80% energy in the X-band and its visible and near-infrared spectra can be electrically adjusted through an integrated emission system. This method could be extended to broader wave bands and has potential applications in multifunctional stealth technologies.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Optics
Hui Mei, Wenqiang Yang, Dou Yang, Li Yao, Yongtao Yao, Chao Chen, Laifei Cheng
Summary: The recent utilization of metamaterial design has prompted a new stage of research on electromagnetic metamaterial absorbers (EMMAs), enabling integration of structure and function. Progress is focused on summarizing developments in structural design, absorbing performance, fabrication methods, and EMMA mechanisms. Future studies are expected to focus on shortcomings in current research and developing trends.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Wei Chen, Yuan Gao, Yuyang Li, Yiming Yan, Jun-Yu Ou, Wenzhuang Ma, Jinfeng Zhu
Summary: This research develops a deep learning model based on metamaterial spectrum transformer (MST) for the powerful design of high-performance broadband solar metamaterial absorbers (SMA). The model divides the optical spectrum of metamaterial into N patches, overcoming the problem of overfitting in traditional deep learning and greatly enhancing the learning capability. A flexible design tool is also developed for real-time on-demand design of metamaterials with various optical functions.
Review
Computer Science, Information Systems
Majid Amiri, Farzad Tofigh, Negin Shariati, Justin Lipman, Mehran Abolhasan
Summary: Future IoT devices are expected to be fully ubiquitous and autonomous, requiring completely wireless operation and accurate sensing. Metamaterial perfect absorbers (MPAs) have the potential to improve efficiency and applications of IoT devices.
IEEE INTERNET OF THINGS JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Amir Ghobadi, Turkan Gamze Ulusoy Ghobadi, Ekmel Ozbay
Summary: Although nanofabrication has advanced, scalability and repeatability issues limit large-scale applications. Lithography-free metamaterial absorbers (LFMAs) offer a potential solution for upscaling designs.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Engineering, Multidisciplinary
Liyun Cao, Yifan Zhu, Sheng Wan, Yi Zeng, Badreddine Assouar
Summary: This study presents a non-Hermitian loss-modulation beam and plate model based on complex wavenumber plane for designing lossy elastic metamaterials. The high-performance absorption of the metamaterial is achieved through a combination of dissipation-radiation balance and multiple reflections. The study provides a new approach for broadband low-frequency vibration suppression and offers an effective paradigm for wave engineering in non-Hermitian elastic wave systems.
INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE
(2022)
Review
Materials Science, Multidisciplinary
Chuanxin Chen, Minqi Chai, Meihua Jin, Tao He
Summary: Terahertz metamaterial absorbers (TMAs) efficiently absorb electromagnetic waves in the range of 0.1-10 THz, achieving perfect absorption and broad band absorption. Their ultra-thin design and tunable electromagnetic properties make them highly valuable in communication, imaging, detection, and security inspection applications.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Review
Physics, Multidisciplinary
Yadgar I. Abdulkarim, Ayesha Mohanty, Om Prakash Acharya, Bhargav Appasani, Mohammad S. Khan, S. K. Mohapatra, Fahmi F. Muhammadsharif, Jian Dong
Summary: Metamaterials are artificially designed materials that possess unique properties due to their geometrical design, such as negative refractive index and left-handed behavior. Metamaterial absorbers, made up of metallic patterns and dielectric layers, achieve high electromagnetic wave absorption through various mechanisms.
FRONTIERS IN PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Ben-Xin Wang, Guiyuan Duan, Chongyang Xu, Jieying Jiang, Wei Xu, Fuwei Pi
Summary: This paper presents a multiple-frequency-band terahertz metamaterial absorber using the surface structure of a toothed resonator. It is capable of controlling the number of absorption peaks without increasing design complexity, unlike previous works. Moreover, the introduction of temperature-controlled vanadium dioxide allows for dynamic tuning of its resonance performance.
MATERIALS & DESIGN
(2023)
Article
Chemistry, Physical
Leilei Gu, Shusheng Xie, Ying Zhang, Yule Huang, Yaojun He, Hongzhan Liu, Zhongchao Wei, Jianping Guo
Summary: The emergence of metamaterials has revolutionized the manipulation of light behavior at the nanoscale. In this study, we demonstrate the forward and inverse design of plasmonic metamaterial absorbers using Light gradient boosting machine (LightGBM) and Extreme Gradient Boosting (XGBoost) algorithms. The results show that XGBoost performs better in both forward and inverse design, with high R-2 values. This framework is suitable for on-demand design of metamaterials and can be applied in various fields.
Article
Chemistry, Multidisciplinary
Jin Xu, Ruoxing Wang, Haoqing Jiang, Xingtao Liu, Licong An, Shengyu Jin, Biwei Deng, Wenzhuo Wu, Gary J. Cheng
Summary: In this study, ultrafast laser direct writing was combined with an external magnetic field for the first time to achieve mass production of 3D hybrid materials with unique functions. Metal-organic framework crystals were used as precursors to support graphene-coated ultrafine cobalt nanoparticles on 3D porous carbon. The study demonstrated significant improvements in electrochemical water-splitting tests due to the alignment of nanoparticles and controlled elemental compositions induced by the magnetic field.
Article
Materials Science, Multidisciplinary
Manuel J. Freire, Jesus Tornero, Ricardo Marques
Summary: This work demonstrates the use of metamaterial lenses to improve the signal-to-noise ratio of magnetic resonance imaging coils in low-field magnetic resonance imaging systems. The dominant source of noise in the signal-to-noise ratio in low-field magnetic resonance imaging systems is the metallization of the coil, while the contribution of noise sample or tissue can be neglected, unlike in high-field magnetic resonance imaging systems. A metamaterial lens composed of a three-dimensional array of capacitively loaded split rings was fabricated and tested on a 0.3 T MRI system. The experiment showed that the metamaterial lens was far enough from the coil to introduce negligible additional losses and tissue losses.
RESULTS IN PHYSICS
(2023)
Article
Engineering, Electrical & Electronic
Ali Vajdi, Mojtaba Sadeghi, Zahra Adelpour
Summary: In this paper, a dual-band ultra-narrow metamaterial absorber for sensing applications is presented. The absorber shows high reflectivity in the whole of the incident light, ranging from 1.05 to 1.45 mu m. The proposed sensor has the advantages of high absorption, high sensitivity, and a fabrication-friendly structure, promising a great platform for the detection of industrial analytes.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Optics
Hang Dong, Zhixin Sun, Jingyi Li, Yahui Li, Wei Zhang, Guangyong Jin
Summary: This paper calculates thermal stresses and adsorption forces to determine laser cleaning conditions and establishes relevant models. Experimental results show that the removal effect is better with increasing nanosecond pulse delay, with the best effect achieved at 600 milliseconds pulse delay. Based on the findings, the mechanisms of oxide film removal involve thermal stress against adsorption and plasma shock wave breaking the oxide layer.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Junjie Zhang, Wenjun Li, Bingtao Li, Zheng-Da Hu, Jicheng Wang, Feng Zhang, Lei Wang
Summary: A multilayer thin film device structure based on Tamm plasmons is proposed for high-performance near-infrared hot electron photodetectors. By optimizing the device structure parameters, high responsivity detection can be achieved.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Hong Huang, Zhiguang Han
Summary: This paper proposes a new ghost imaging reconstruction method using ordered orthogonal Hadamard derived speckle as the illumination speckle series, and introduces the alternating direction multiplier method to improve the imaging performance. The evaluation results show that the method can achieve high-quality reconstructed images under low sampling conditions.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Moritsugu Sakamoto, Yuki Ono, Kohei Noda, Tomoyuki Sasaki, Nobuhiro Kawatsuki, Masayuki Tanaka, Hiroshi Ono
Summary: The effect of wavelength and polarization of illuminating light in polarization imaging for birefringent objects placed behind a scattering structure was experimentally investigated. The result shows that the spatial distribution of the birefringent object was more clearly visualized in the longer wavelength combined with circularly polarized light illumination. This finding indicates the potential of using polarization imaging with circularly polarized light illumination in the near-infrared range for visualizing birefringent objects with scattering.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Peihui Du, Hongfang Wang, Pengwei Li, Rukeyemuhan Abadula, Hmbat Batelbek, Min Gao
Summary: In this study, we theoretically demonstrate the strong coupling between Tamm plasmons and exciton polaritons in metal Al/DBR-molecular structures, extending the operating wavelength to the deep ultraviolet region. The coupling strength can be effectively manipulated by adjusting the structure parameters, offering potential benefits for the development of new-style optical filters.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Priyanka Chaudhary, Akhilesh Kumar Mishra
Summary: We design and numerically investigate the switching dynamics between two outer waveguides in a parity-time (PT)-symmetric adiabatically coupled three waveguides nonlinear directional coupler (NLDC) system. The study shows that the device can provide switching even when the middle waveguide is nonlinear and the outer waveguides are linear. Furthermore, the effect of loss to gain ratio on critical switching power and the impact of launched light power and gain (loss) value on transmitted power are also studied.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Wei Feng, Yongcong Yi, Shuyang Li, Zhi Xiong, Boya Xie, Zhen Zeng
Summary: Traditional imaging techniques are ineffective in achieving clear underwater imaging due to the presence of scattering media. Single-pixel imaging (SPI) system based on Unet++ offers a solution for reconstructing high-quality images in highly turbid water environments.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Xiaorui Qu, Jufeng Zhao, Haijun Tian, Junjie Zhu, Guangmang Cui
Summary: This paper studies the structural similarity between RGB and spectral images and proposes a non-iterative Images Structure Similarity (ISS) method for fast reconstruction of spectral images. Additionally, the input of the Deep Image Prior (DIP) method is optimized for the first time by using the initial spectral data reconstructed by ISS, leading to an improved starting value for the iteration. The experimental results show that the proposed method can enhance the reconstruction quality in both spectral and spatial resolutions, while significantly reducing the reconstruction time compared to other DIP-based methods.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Donghe Sheng, Zhe Han, Zanyang Qiao, Tianpei Dong, Chenxi Wang, Huiping Tian
Summary: In this study, a distributed multi-parameter sensor based on an etched few-mode multi-core fiber is proposed, allowing simultaneous sensing of temperature, strain, and sample refractive index. By combining space division multiplexing and stimulated Brillouin scattering, the sensor achieves high sensitivity in detecting these parameters.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Dehao Chen, Zhenwu Mo, Zehong Liang, Junjie Jiang, Huilin Tang, Yidan Sun, Ziyu Wang, Quanfeng Wei, Yanru Chen, Dongmei Deng
Summary: In this study, a novel family of elliptical Airyprime vortex beams (EAPVBs) is introduced, which inherits the excellent self-focusing properties of the circular Airyprime vortex beam (CAPVB). The asymmetric focusing of EAPVB leads to some novel properties, such as the splitting of high-order optical vortex and the formation of two foci. By taking advantage of these properties, EAPVB is constructed as a tunable optical bottle for particle capture.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Xiao Ma, Qiongchan Shao, Jian-Jun He
Summary: In this study, an SHS chip based on Su8 waveguide was designed and fabricated. By physically adjusting the metal electrodes and compensating for transmissivity fluctuations, the generation of side ripples was successfully suppressed.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Hongbin Zhang, Jiansen Du, Zongtao Chi, Hailin Cong, Bin Wang
Summary: In this paper, a novel type of dual-wavelength confocal metalens is proposed to solve the spatial crosstalk between two wavelengths. The metalens can greatly reduce the spatial crosstalk and achieve high precision and efficiency in confocal imaging. It can also focus light in specific wavelength ranges, making it suitable for imaging, microscopy, and optical fiber communication.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Rui Qiu, Guanmao Zhang, Shaokai Du, Jie Liu, Hongyu Jib, Kaiyun Bi, Bochuan Xing, Guangchao Diao
Summary: Recent research has developed an achromatic metalens that shows potential for replacing traditional lenses. This study focuses on a continuously variable focus height broadband achromatic metalens for long-wavelength infrared applications. By optimizing materials and parameters, chromatic aberration is effectively corrected, making it suitable for high-resolution LWIR imaging and spectroscopy systems.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Marcos Troncoso-Costas, Gaurav Jain, Yiming Li, Mohammed Patel, Lakshmi Narayanan Venkatasubramani, Sean O'Duill, Frank Smyth, Andrew Ellis, Francisco Diaz-Otero, Colm Browning, Liam Barry
Summary: In this work, a fast-switching tuneable laser capable of wide wavelength coverage, low noise and linewidth levels suitable for high-order modulation formats is demonstrated. The laser is characterized to cover a wavelength range of 35 nm in the C-band with nanosecond switching time. It is used to successfully demonstrate 480 Gbit/s 16QAM transmission over 25 km of single-mode fiber for a wavelength range of 19 nm.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Takeshi Moriyasu, Masahiko Tani, Hideaki Kitahara, Takashi Furuya, Jessica Afalla, Toshiro Kohmoto, Daishiro Koide, Hiroki Sato, Mitsutaka Kumakura
Summary: Optical pump-terahertz probe spectroscopy was used to study the photocarrier dynamics and optical characteristics of semiconductor Si. The results showed that the thickness of Si influenced the transmitted terahertz field amplitude and peak delay time, indicating differences in photocarrier dynamics between different Si materials.
OPTICS COMMUNICATIONS
(2024)