Article
Nanoscience & Nanotechnology
Biming Mo, Chao Wang
Summary: A transparent metamaterial with wide-angle absorption and polarization-insensitive broadband microwave absorbers has been designed. By adjusting the position of the ITO resonator, more than 90% absorption is achieved, and good optical transmittance is obtained using flexible transparent substrates.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Optics
Baoqing Wang, Cuiping Ma, Peng Yu, Alexander O. Govorov, Hongxing Xu, Wenhao Wang, Lucas V. Besteiro, Zhimin Jing, Peihang LI, Zhiming Wang
Summary: In this work, an ultra-broadband nanowire metamaterial absorber composed of vertically aligned dielectric nanowires with coaxial metallic rings is proposed. The absorber exhibits strong absorption from 0.2 to 7 μm wavelength range, making it suitable for various applications.
PHOTONICS RESEARCH
(2022)
Article
Physics, Applied
Shijun Ji, Hailin Ren, Chenguang Zhang, Ji Zhao, Han Wu, Handa Dai
Summary: An optically transparent metamaterial absorber with polarization insensitivity and wide-angle absorption is proposed. The absorber is composed of an indium tin oxide resistive film and a low-loss substrate, achieving an absorption rate of more than 97% in the range of 6.54-18.66 GHz. The design provides a new idea for future applications by using a low-resistivity resistive film as the frequency-selective surface.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Mechanics
Xiaonan Yuan, Qinhong Li, Xiao Xiang, Jiawei Jiao, Yingzhou Huang, Xiaoxiao Wu
Summary: This study achieved an ultra-broadband absorber with outstanding thermal convection performance in a fluid environment, which can reduce noise and support heat transfer simultaneously.
Article
Chemistry, Multidisciplinary
Buxiong Qi, Wenqiong Chen, Tiaoming Niu, Zhonglei Mei
Summary: The proposed all-metal titanium pyramid structured metamaterial absorber (MMA) achieves broadband absorption, efficient solar-selective absorption, and high photothermal conversion efficiency. The MMA exhibits strong and broadband absorption due to LSPP absorption, coupled effects of multiple plasmons, and high loss of the titanium material. It also shows wide-angle incidence and polarization insensitivity, with great processing accuracy tolerance.
Article
Materials Science, Multidisciplinary
Yao Xiong, Fu Chen, Yongzhi Cheng, Hui Luo
Summary: In this study, a broadband and optically transparent metamaterial absorber was successfully designed and prepared. It exhibited high microwave absorption efficiency at various angles and polarizations, while maintaining good transparency to visible light. The excellent performance and potential of this metamaterial absorber provide new possibilities for the development of transparent microwave absorbing windows and devices.
Article
Optics
Yu Zhou, Zheng Qin, Zhongzhu Liang, Dejia Meng, Haiyang Xu, David R. Smith, Yichun Liu
Summary: Broadband metamaterial absorbers with high absorption, ultrathin thickness and easy configurations are researched and demonstrated in this paper, paving the way for enhancing the optical performance in applications of infrared thermal emitters, imaging and photodetectors.
LIGHT-SCIENCE & APPLICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Yujie Zhong, Yi Huang, Shuncong Zhong, Tingting Shi, Fuwei Sun, Tingling Lin, Qiuming Zeng, Ligang Yao, Xuefeng Chen
Summary: This study achieves frequency-agile absorption adjustments by utilizing the coupling between total reflection prism and electrically-driven MoS2. The redistribution of electric field and susceptible dielectric response are found to be attributed to limited spatial near-field perturbation. The study also demonstrates that perturbed MoS2 plasmon modes promote the formation of dual-phase singularities to suppress attenuation of absorption amplitude, extending the relative tuning range.
Article
Chemistry, Multidisciplinary
Jing-Hao Wu, Yan-Long Meng, Yang Li, Yi Li, Yan-Song Li, Gui-Ming Pan, Juan Kang, Chun-Lian Zhan, Han Gao, Bo Hu, Shang-Zhong Jin
Summary: In this study, a center-aligned tandem nanopillar array based absorber for ultra-broadband solar energy harvesting was investigated. The absorber achieved high-efficiency and omnidirectional absorption by introducing the center-aligned tandem nanopillar array embedded in an Al2O3 dielectric layer. The absorber demonstrated strong absorption by adjusting the radii and heights of the nanopillars. The research proposed a potential absorber for applications in thermal photovoltaic systems, infrared detection, and isotropic absorption sensing, as well as providing a new approach to design high-efficiency absorbers in an ultrabroad wavelength range.
Article
Materials Science, Multidisciplinary
Yaqiang Zhang, Haonan Li, Jiahao Ge, Chi Zhang, Jingzhou Li, Cheng Zhang, Ruixiang Deng, Yang Zhang, Hongxing Dong, Long Zhang
Summary: This paper proposes a highly Vis-NIR transparent metamaterial-window with outstanding microwave broadband absorption and practical durability. The experimental results demonstrate excellent absorptivity and shielding effectiveness, and the physical mechanism is explained using a multiple reflections interference model. The gold mesh structure enables the window to have excellent salt spray corrosion resistance and high-temperature stability, making it a promising candidate for anti-electromagnetic interference and electromagnetic shielding in military and civilian applications.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Physics, Condensed Matter
Phuc Toan Dang, Jongyoon Kim, Truong Khang Nguyen, Khai Q. Le, Ji-Hoon Lee
Summary: This paper presents a titanium cross-shaped based-metamaterial absorber in the visible and near-infrared regions, enabling high broadband absorption and solar-thermal conversion efficiency. The structure achieves high absorption rates for both TE and TM polarizations, as well as high solar thermal conversion efficiency over a wide temperature range.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Chemistry, Multidisciplinary
Ehab Awad
Summary: Graphene is a promising material for infrared applications, but standalone monolayer graphene has low infrared absorption. In this study, a novel graphene metamaterial embedded inside a Bundt optical-antenna is introduced, which significantly enhances the infrared absorption of graphene and covers a wide range of optical communication bands.
Article
Materials Science, Multidisciplinary
Jing Xu, Yuancheng Fan, Xiaopeng Su, Jing Guo, Jiaxing Zhu, Quanhong Fu, Fuli Zhang
Summary: The optically transparent metamaterial microwave absorber shows wide operation angle, high absorptivity, and potential applications in various fields.
Article
Optics
Xiang Miao, Zhongyin Xiao, Zhentao Cui, Tiantian Zheng, Xiaoyu Wang
Summary: A three-dimensional dual-functional metamaterial (MM) is proposed in this paper. The polarization conversion part is made of vanadium dioxide (VO2), while the absorption part is composed of graphite and silica materials. By manipulating the phase transition characteristics of VO2, the switching between dual-functional polarization conversion and absorption is achieved. The simulation and theoretical calculation results show that the anisotropic polarization converter made from VO2 achieves a linear polarization conversion rate (PCR) of over 90% and a relative bandwidth (RB) of 99.3% in the frequency range of 0.67-1.99 THz. The broadband polarization conversion is explained by analyzing the current distribution. When VO2 is in a dielectric state, the absorptance at 1.6 THz is nearly 100%, and the absorption mechanism is also explained by the electric and magnetic field distribution on the surface. The two functions are designed independently, and the reconfiguration and tuning of one function does not affect the operating frequency band of the other function, achieving functional isolation.
Article
Materials Science, Multidisciplinary
Yadgar I. Abdulkarim, Halgurd N. Awl, Fatih Ozkan Alkurt, Fahmi F. Muhammadsharif, Salah Raza Saeed, Muharrem Karaaslan, Mehmet Bakir, Heng Luo
Summary: This paper presents a square-shaped water metamaterial as a perfect absorber for ultra-broadband absorption in the microwave frequency range. Numerical investigation using CST and fabrication through 3D printing technology were conducted. Results show high absorption and thermal stability.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Engineering, Electrical & Electronic
Hongcheng Xu, Bin-Zhen Zhang, Jun-Ping Duan, Jianli Cui, Yongqin Xu, Ying Tian, Li Yan, Mengfei Xiong, Qinyin Jia
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2018)
Article
Optics
Yuhua Yang, Yongqing Xu, Binzhen Zhang, Junping Duan, Li Yan, Hongcheng Xu, Yunpeng Liu, Yanan Shi
OPTICS COMMUNICATIONS
(2019)
Article
Optics
Jianli Cui, Binzhen Zhang, Hongcheng Xu, Huixia Sun, Guirong Shao
OPTICS COMMUNICATIONS
(2019)
Article
Engineering, Electrical & Electronic
Xuan Li, Weidong Wang, Lingjun Wu, Haitao Zhao, Meng Wang, Yuejiao Wang, Hongcheng Xu, Min Liu, Libo Gao
Summary: Flexible tactile sensors are gaining attention in various fields and are extensively used in force sensing devices. A novel flexible tactile sensor with ultrahigh sensitivity and wide sensing range has been developed for a self-cleaning and fully integrated wearable tactile sensing system for real-time analysis. The sensor system has the potential to enhance wearable electronics for practical applications.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Nanoscience & Nanotechnology
Hongcheng Xu, Libo Gao, Haitao Zhao, Hanlin Huang, Yuejiao Wang, Gang Chen, Yuxin Qin, Ningjuan Zhao, Dandan Xu, Ling Duan, Xuan Li, Siyu Li, Zhongbao Luo, Weidong Wang, Yang Lu
Summary: An ultrabroad-linear range (1 MPa) iontronic pressure sensor with superior sensitivity (12.43 kPa(-1)) and stretchability (up to 20%) was proposed for biophysical monitoring and deep learning-based knee-rehabilitation training. The sensor features high sensitivity, ultrabroad linear sensing range, high pressure resolution, long-term durability, and excellent stretchability, allowing it to maintain operating stability even in emergency cases with high sudden impact force. With the help of a neuro-inspired fully convolutional network algorithm, the sensor can accurately predict knee joint postures for improved rehabilitation after surgery.
MICROSYSTEMS & NANOENGINEERING
(2021)
Article
Engineering, Electrical & Electronic
Yuxin Qin, Hongcheng Xu, Siyu Li, Dandan Xu, Weihao Zheng, Weidong Wang, Libo Gao
Summary: This study successfully develops a flexible dual-mode capacitive sensor that combines proximity and pressure sensing, and enables wireless sensing. The sensor is fabricated using low-cost screen printing and laser engraving methods, and exhibits features such as high detection distance, extended operating range, low detection limit, and fast response time.
IEEE SENSORS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Libo Gao, Ningjuan Zhao, Hongcheng Xu, Xinkang Hu, Dandan Xu, Weihao Zheng, Weidong Wang
Summary: This study proposes a flexible piezoresistive pressure sensor based on poly(3,4-ethylenedioxythiophene):poly(styrene sulfonic acid) and cross interlocked nylon fabrics, which exhibits a wide sensing range, fast response time, and the capability of mapping and identification of spatial pressure distribution.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2022)
Article
Computer Science, Information Systems
Hongcheng Xu, Weihao Zheng, Yangbo Yuan, Dandan Xu, Yuxin Qin, Ningjuan Zhao, Qikai Duan, Yujian Jin, Yuejiao Wang, Weidong Wang, Yang Lu, Libo Gao
Summary: A highly permeable and stretch-resistant flexible bowtie antenna was developed, with high vapor transmission rate and radiation efficiency. The antenna can capture changes in tensile strain and temperature, showing great potential for applications in soft electronics.
IEEE INTERNET OF THINGS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Weihao Zheng, Yunlong Zhao, Hongcheng Xu, Yangbo Yuan, Weidong Wang, Libo Gao
Summary: We report a stretchable iontronic pressure sensor (SIPS) array with low proximate crosstalk for epidermal monitoring. The SIPS exhibits high sensitivity, low limit of detection, broad linear sensing range, rapid response time, and long-term stable working durability. The serpentine island bridge structure enables the SIPS array to stretch, allowing pulse and grip monitoring of a bent wrist and finger.
IEEE ELECTRON DEVICE LETTERS
(2023)
Article
Chemistry, Analytical
Ying Peng, Chao He, Hongcheng Xu
Summary: The monitoring of head posture is crucial for interactive learning and building feedback with learners' attention. This study introduces an attachable inertial device (AID) that comfortably monitors head posture at the neck and uses machine learning for attention assessment. The device accurately distinguishes different head motion postures with a high accuracy of 98.00% using a 2D convolutional neural network (CNN).
Article
Computer Science, Information Systems
Junping Duan, Rui Liu, Hongcheng Xu, Rui Zhang, Binzhen Zhang, Byung-Sung Kim
Article
Computer Science, Information Systems
Qinyin Jia, Hongcheng Xu, M. F. Xiong, Binzhen Zhang, Junping Duan
Article
Computer Science, Information Systems
Hongcheng Xu, Jianli Cui, Junping Duan, Binzhen Zhang, Ying Tian
