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
Chemistry, Physical
Chenxu Zhao, Huan Wang, Yanyan Bu, Hui Zou, Xiangfu Wang
Summary: This paper introduces the absorption mechanism and design directions of metamaterial perfect absorbers (MPAs), highlighting equivalent impedance matching, plasma resonance, and interference effect as the main absorption mechanisms. The design aspects of MPAs include multiband absorption, ultra-wideband and ultra-narrowband absorption, polarization and angle insensitive absorption, and dynamically controllable tunable absorption.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Engineering, Multidisciplinary
Jun Zhu, Changsong Wu
Summary: Most amino acid detection techniques currently have limitations in equipment operation procedures, detection periods, and accuracy, which do not meet the requirement of high-standard amino acid identification in the food industry. This study proposes a novel detection and identification method based on the different refractive indices of aqueous amino acid solutions. Experimental results show that this method can accurately identify amino acids, providing an important reference for further development of metamaterial sensors.
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)
Article
Materials Science, Multidisciplinary
Zhengjie Guo, Xiaoyu Liu, Caixia Li, Jiefeng Li, Haotian Cai, Ming Fu, Dawei He, Yongsheng Wang
Summary: Broadband optical absorbers are essential for various applications such as solar energy harvesting, thermal emitters, and infrared detection. Metallic truncated nanocones demonstrated ultra-broadband absorption in the UV-visible-NIR spectral region, with an average absorptivity of 96.11% and continuous high absorptivity in a wide wavelength range. The interaction of different resonances in the truncated nanocones contributes to the high absorption performance, with potential for practical applications and fabrication feasibility.
Article
Materials Science, Multidisciplinary
Qianqian Huang, Gehuan Wang, Ming Zhou, Jing Zheng, Shaolong Tang, Guangbin Ji
Summary: Metamaterials are artificial composite structures with supernormal physical properties that allow effective manipulation of electromagnetic waves. One important application is metamaterial absorbers, which achieve perfect absorption through reasonable design. This review focuses on bionic design, new artificial design, and the use of 3D printing technology to prepare metamaterial absorbers.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Optics
Xudong Bai, Rui Yang
Summary: We demonstrate the perfect trapping of electromagnetic fields over multi-band frequencies through all-dielectric terahertz absorbers using water graphene cascade metamaterials. The water coating layer enhances high-order Fabry-Porot resonant absorbing modes, achieving more than 8 absorbing peaks with absorptions exceeding 99% below 3 THz. The integration with thermal controlled vanadium dioxide allows for easy resetting of the multiple perfect absorbing bands, and the reconfigurable characteristics of graphene enable dynamic tuning of absorbing frequencies.
Article
Materials Science, Multidisciplinary
Saif Hannan, Mohammad Tariqul Islam, Mohammad Rashed Iqbal Faruque, Hatem Rmili
Summary: This paper proposes a polarization-independent perfect absorber with near-zero index meta material (NZIM) property, which shows near unity absorptions at various frequencies and near-zero values of permittivity, permeability, and refractive index. The absorber demonstrates perfect absorption capability and near-zero refractive index at the entire operating frequency range, enhancing antenna gain, directivity, and sensing applications in C, X, and Ku band.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
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
Engineering, Mechanical
Jianlin Yi, Jiaxin Long, Chang Qing Chen
Summary: This study proposes a reconfigurable electromechanical metamaterial with first-order and second-order topological states for controlling elastic waves. The topology of the metamaterial can be reconfigured by switching the connected circuits and changing electrical parameters, and its potential applications in waveguide design are demonstrated.
EXTREME MECHANICS LETTERS
(2023)
Article
Optics
Shuqin Wang, Xiaogen Yuan, Leilei Gu, Shusheng Xie, Qiongxiong Ma, Zhongchao Wei, Jianping Guo
Summary: Significant progress has been made in researching metamaterial perfect absorbers using deep learning methods. This paper proposes a fully connected neural network (RFC-NN) based on the residual principle for inverse design, achieving better prediction performance and generalization ability compared to other network models. By using the trained RFC-NN model, a metamaterial perfect absorber with an absorption bandwidth of 1935 nm and an average absorptivity of 93.70% is successfully designed. The accuracy of the RFC-NN model is further improved using the Pearson correlation coefficient analysis method. This design method proves to be effective and applicable to other functional nanophotonic devices.
OPTICS COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Cheng-Yu Lu, Chin-Chien Chung, Ta-Jen Yen, Tsung-Yu Huang
Summary: The study presents a novel approach of using a periodic seed layer and oblique deposition method to fabricate a stochastically-distributed oblique-flat-sheet metamaterial perfect absorber (MPA) with increased absorption bandwidth and tolerance to high angle-incidence. Simulation and measurement results both demonstrate satisfactory absorption performance of the MPA.
SCIENTIFIC REPORTS
(2021)
Article
Multidisciplinary Sciences
Xin-Xian Wu, Cheng-Yu Lu, Tsung-Yu Huang
Summary: In this study, an oblique-flat-sheet metamaterial perfect absorber (MPA) was designed to enhance the sensitivity of a biosensor. By simulating and conducting experiments, it was confirmed that the MPA had higher sensitivity.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Shuqin Wang, Zhongchao Wei, Ruihuan Wu, Qiongxiong Ma, Wen Ding, Jianping Guo
Summary: In this paper, the authors address the limitations of previous research in the inverse design of metamaterial perfect absorbers (MPAs) by designing reconfigurable MPAs (RMPAs) with three distinct structures and proposing a residual parallel neural network (RPNN). The trained RPNN accurately predicts the structural parameters and absorption spectra, achieving remarkable precision and enabling the design of multifunctional MPAs. The proposed methodology holds great promise in various applications such as solar energy harvesting, detection, and filtration.
Article
Materials Science, Multidisciplinary
Chieh-Ting Lin, Ta-Jen Yen, Tsung-Yu Huang
Summary: This study presents a bifunctional sensor for simultaneous surface enhanced infrared absorption and refractive index sensing using a split-ring-resonator-based metamaterial perfect absorber. The sensor is able to detect polyvinyl chloride (PVC) with label-free and quantitative methods, achieving a detection limit of 0.5% in experiments, exceeding the current measurement limit of 10% through infrared absorption measurement.
Article
Nanoscience & Nanotechnology
Jijie Huang, Han Wang, Dongfang Li, Zhimin Qi, Di Zhang, Ping Lu, Hou-Tong Chen, Dmitry A. Yarotski, Pao-Tai Lin, Xinghang Zhang, Haiyan Wang
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Multidisciplinary Sciences
Andrew E. Cardin, Sinhara R. Silva, Shai R. Vardeny, Willie J. Padilla, Avadh Saxena, Antoinette J. Taylor, Wilton J. M. Kort-Kamp, Hou-Tong Chen, Diego A. R. Dalvit, Abul K. Azad
NATURE COMMUNICATIONS
(2020)
Article
Chemistry, Multidisciplinary
Shikhar Misra, Di Zhang, Zhimin Qi, Dongfang Li, Juanjuan Lu, Hou-Tong Chen, Haiyan Wang
CRYSTAL GROWTH & DESIGN
(2020)
Article
Chemistry, Multidisciplinary
Jijie Huang, Xuejing Wang, Dongfang Li, Tiening Jin, Ping Lu, Di Zhang, Pao-Tai Lin, Hou-Tong Chen, Jagdish Narayan, Xinghang Zhang, Haiyan Wang
ADVANCED MATERIALS INTERFACES
(2020)
Article
Materials Science, Multidisciplinary
Jijie Huang, Xin Li Phuah, Luke Mitchell McClintock, Prashant Padmanabhan, K. S. N. Vikrant, Han Wang, Di Zhang, Haohan Wang, Ping Lu, Xingyao Gao, Xing Sun, Xiaoshan Xu, R. Edwin Garcia, Hou-Tong Chen, Xinghang Zhang, Haiyan Wang
Summary: The study designs a structure that embeds alloy nanopillars into a BTO matrix, forming vertically aligned nanocomposites with excellent epitaxial quality and interesting properties like high magnetic anisotropy and magneto-optical coupling response.
Article
Optics
Chun-Chieh Chang, Shin-Chun Kuo, Hsyi-En Cheng, Hou-Tong Chen, Zu-Po Yang
Summary: By conformally coating plasmonic TiN films onto disordered AAO nanotemplates, we demonstrate TiN broadband metasurface perfect absorbers with polarization-insensitive and weak angle-dependent perfect absorption over the entire visible and near-infrared spectral regions. The light scattering induced by the strong disorder of the AAO nanopores and the strong absorption of the TiN deposited on their sidewall are critical for achieving broadband perfect absorption, making the TiN disordered metasurface perfect absorbers superior to many other types of broadband perfect absorbers previously reported.
Article
Chemistry, Physical
Ekaterina A. Dolgopolova, Dongfang Li, Steven T. Hartman, John Watt, Carlos Rios, Juejun Hu, Ravi Kukkadapu, Joanna Casson, Riya Bose, Anton Malko, Anastasia Blake, Sergei Ivanov, Oleksiy Roslyak, Andrei Piryatinski, Han Htoon, Hou-Tong Chen, Ghanshyam Pilania, Jennifer A. Hollingsworth
Summary: Research shows that spinel metal oxide nanocrystals have the ability to modify the light-emission properties of telecom-emitting quantum dots. By adjusting synthetic conditions, unprecedented tunability of nanocrystal size, composition, and doping characteristics can be achieved. Plasmonics enhancement can significantly increase the decay rates of quantum dots emitting in the communication range.
NANOSCALE HORIZONS
(2022)
Editorial Material
Optics
Li-Guo Zhu, Zhengming Sheng, Harald Schneider, Hou-Tong Chen, Masahiko Tani
Summary: This article provides an overview of the papers published in the feature issue on ultrafast phenomena and terahertz waves, showcasing cutting-edge research in this field and recent developments in THz technology.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2022)
Editorial Material
Physics, Applied
Isabelle Staude, Houtong Chen, Andrey Miroshnichenko, Junichi Takahara, Willie J. Padilla
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Wendao Xu, Wenzhang Fang, Teng Shi, Xin Ming, Yingli Wang, Lijuan Xie, Li Peng, Hou-Tong Chen, Yibin Ying
Summary: Researchers have developed an alternative approach to achieve tunable terahertz photonic devices by postprocessing nanothickness graphene films. These films have widely tunable conductivity and enable versatile THz applications, such as high-performance electronics, photonics, and sensors. The researchers successfully detected diphenylamine using this method, demonstrating its potential in molecular sensing.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Optics
Jacob Pettine, Prashant Padmanabhan, Nicholas Sirica, Rohit P. Prasankumar, Antoinette J. Taylor, Hou-Tong Chen
Summary: Nonlinear optical spectroscopies are powerful tools for investigating material properties and light-induced dynamics. Terahertz emission spectroscopy has emerged as a versatile method for tracking the ultrafast evolution of physical properties within bulk materials and nanoscale interfaces. The understanding of underlying broken symmetries and point group symmetries in this technique allows for the exploration of emerging materials and nanoscale physics.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Jacob Pettine, Lauren Gingras, Peter Adel, Chun-Chieh Chang, Rohit P. Prasankumar, Ronald Holzwarth, Antoinette J. Taylor, Shi-Zeng Lin, Prashant Padmanabhan, Hou-Tong Chen
Summary: This study presents a novel method for versatile ultrafast light-based current control within optoelectronic metasurfaces, with potential applications in information science, charge acceleration, THz spectroscopies, and THz imaging.
2023 48TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES, IRMMW-THZ
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Hou-Tong Chen, Chun-Chieh Chang, Hichem Guerboukha, Daniel M. Mittleman, John L. Reno, Michael Lilly, Sadhvikas J. Addamane
Summary: This study presents active THz metasurfaces that exhibit near-zero reflection when incident from the substrate side and applied with an appropriate voltage bias. It offers a new approach to achieve near-unity modulation depth of THz waves, which is particularly promising for THz wireless communications.
2023 48TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES, IRMMW-THZ
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Lauren Gingras, Jacob Pettine, Peter Adel, Ronald Holzwarth, Hou-Tong Chen
Summary: In this study, we demonstrate the imaging capability of a new class of metamaterials using a newly developed 1W output power module at 780 nm. The symmetry-broken optoelectronic metasurfaces generate THz electric pulses with spatially patterned polarization maps, which can be observed in the far field using state-of-the-art fiber-coupled photoconductive antennas.
2023 48TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES, IRMMW-THZ
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Fahid Hassan, Jeffrey Lei, Hichem Guerboukha, Hou-Tong Chen, Chun-Chieh Chang, Sadhvikas J. Addamane, Michael Lilly, Edward W. Knightly, Daniel M. Mittleman
Summary: We present the use of an electrically-controlled metasurface for THz multi-user communication. By applying different voltage profiles on the metasurface, simultaneous 2-user communication with QPSK symbols can be achieved.
2023 48TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES, IRMMW-THZ
(2023)
