Article
Materials Science, Multidisciplinary
Hongyu Ren, Qianyi Shangguan, Zijun Song, Yong Zhao, Zao Yi, Guolu Ma, Jianguo Zhang, Hua Yang, Shifa Wang, Pinghui Wu
Summary: This paper presents a graphene metamaterial absorber based on impedance matching, which achieves a theoretically perfect absorption in the mid-infrared band. The designed absorber is capable of multiband stable high absorption and maintains excellent performance in a wide incident angle range. The results indicate that the graphene absorber has potential applications in biosensing, photodetection, and photocell fields.
Review
Nanoscience & Nanotechnology
Yu Yao, Jin Zhou, Zhengqi Liu, Xiaoshan Liu, Guolan Fu, Guiqiang Liu
Summary: Metamaterial light absorbers have gained significant attention for their absorption efficiency and wide range of applications, but traditional noble metals based absorbers can suffer from structural damage due to local high temperatures. Intensive research has focused on developing absorbers that can maintain efficient light absorption and structural stability at high temperatures. Refractory materials are seen as key to providing robust thermal stability and high performance for light absorption.
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
Chemistry, Multidisciplinary
Bin Tang, Neigang Yang, Xianglian Song, Gui Jin, Jiangbin Su
Summary: This study proposes an anisotropic perfect metamaterial absorber in visible frequencies, utilizing a multi-layered alpha-MoO3 nanoribbon/dielectric structure stacked on a silver substrate. Electromagnetic simulations show that triple-band perfect absorption can be achieved for polarization along [100] and [001] in the direction of alpha-MoO3 when the absorber is composed of three alpha-MoO3 nanoribbon/dielectric layers.
Article
Acoustics
Andre A. T. Brandao, Aline S. de Paula, Adriano T. Fabro
Summary: In recent years, the study of metastructures for vibration control has gained attention. However, there is a lack of application in rotating machines. This study investigates the use of locally resonant metastructures for vibration attenuation in rotating machines. The results suggest that this method can be effectively applied for vibration control in rotors, paving the way for further engineering solutions.
JOURNAL OF SOUND AND VIBRATION
(2022)
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
Jun Chen, Feng Tang, Xiangxian Wang, Jingjun Wu, Yiman Wu, Xin Ye, Yiqun Wang, Liming Yang
Summary: A novel model for a high-efficiency tunable broadband near-infrared absorber is proposed in this paper, achieving tuning of absorption efficiency and band by regulating temperature. The absorber utilizes MoS2 and VO2 materials to achieve high absorption rates in different wavelength ranges at different temperatures.
RESULTS IN PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Jin Hu, Kang Xu, Peilin Huang, Min Wang, Shaolin Xu, Qi-Huo Wei
Summary: Wideband perfect absorbers are in high demand for applications such as efficient photodetection and radiation cooling. This study introduces a novel hierarchical conical metasurface that achieves perfect absorption from visible to far-infrared wavelengths through surface-engraved nanogratings on microcones. The underlying mechanisms, including surface phonon polaritons and light trapping, are examined. This technology shows significant promise for applications in photodetectors.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Optics
Fengqing Yang, Juan Song, Zhiwei Guo, Xian Wu, Kejia Zhu, Jun Jiang, Yong Sun, Haitao Jiang, Yunhui Li, Hong Chen
Summary: This research focuses on designing and implementing robust long-range directional wireless power transfer, utilizing tools provided by topological photonics for near-field control of WPT. By designing a one-dimensional quasiperiodic Harper chain and introducing a power source, successful long-range directional WPT was achieved. By adding variable capacitance diodes, an experimental demonstration of actively controlled directional WPT based on electrically controllable coil resonators was realized.
Article
Optics
Shu Zong, Dongwen Zeng, Wen Yuan, Guiqiang Liu, Zhengqi Liu
Summary: This review summarizes the recent developments in perfect absorbers, including the use of new materials and structures. The applications of perfect absorption in various fields are discussed, and the challenges and prospects for future advancement are presented.
CHINESE OPTICS LETTERS
(2022)
Article
Chemistry, Physical
Li Yao, Wenqiang Yang, Shixiang Zhou, Hui Mei, Laifei Cheng, Litong Zhang
Summary: This research presents a design paradigm for mechanically robust all-dielectric microwave absorbing (MA) metamaterials, achieving perfect electromagnetic wave absorption. The introduction of a gyroid shell cellular structure optimizes the MA performance while maintaining mechanical properties. The fabricated gyroid shellular MA metamaterials exhibit unmatched MA performance and excellent mechanical properties.
Article
Optics
Bo Yu, Jie Yang, Yexi Song, Zhigang Wang, Tiedi Zhang, Bo Yan, Ruimin Xu
Summary: This paper presents a terahertz metamaterial waveguide to mitigate amplitude and phase distortions in some terahertz systems. A simple method based on free-space analysis is proposed for designing metamaterial waveguides in an enclosed space. The abilities of the designed metamaterial waveguide to modulate the phase and absorption of terahertz waves around 0.2 THz are demonstrated.
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
Chemistry, Analytical
Romolo Marcelli, Giovanni Maria Sardi, Emanuela Proietti, Giovanni Capoccia, Jacopo Iannacci, Girolamo Tagliapietra, Flavio Giacomozzi
Summary: This study designed RF MEMS switches connected to triangular resonators and U-shaped resonators for frequency tuning in potential applications in the K-Band. Dual-band operation or fine-tuning of band-stop narrowband filters was achieved by switching between two paths loaded with different resonators.
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, Multidisciplinary
Duong Duc La, Tuan Ngoc Truong, Thuan Q. Pham, Hoang Tung Vo, Nam The Tran, Tuan Anh Nguyen, Ashok Kumar Nadda, Thanh Tung Nguyen, S. Woong Chang, W. Jin Chung, D. Duc Nguyen
Article
Chemistry, Physical
Nguyen Thi Mai, Son Tung Ngo, Peter Lievens, Ewald Janssens, Nguyen Thanh Tung
JOURNAL OF PHYSICAL CHEMISTRY A
(2020)
Article
Materials Science, Multidisciplinary
Nguyen Hong Son, Nguyen Giang Nam, Nguyen Tien Anh, Ta Ngoc Bach, Luu Thi Lan Anh, Nguyen Thanh Tung, Nguyen Ngoc Trung, Nguyen Duc Chien, Nguyen Huu Lam, Cong Tu Nguyen
Summary: Tungsten oxide hydrate nanoplates were functionalized with AgNO3 via one-step acid precipitation at room temperature, producing a nanocomposite of Ag2WO4 and WO3.H2O. The functionalization led to increased specific surface area and enhanced photocatalytic activity under visible light.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2021)
Article
Physics, Applied
Matias Bejide, Andre Vantomme, Nguyen Thanh Tung, Ewald Janssens
Summary: The extended two-temperature heat transfer model proposed in this study can be used to investigate the heat flow in multilayer antennas. The thermal properties of the buffer layer can control the heat flow dynamics in layered materials, and a large buffer layer electron-phonon coupling can induce non-intuitive reverse internal heat flow and transient energy retention on short timescales.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Minh Thuy Le, Van Duc Ngo, Thanh Tung Nguyen, Quoc Cuong Nguyen
Summary: This study introduces a comprehensive dual-band ambient RF energy harvesting system, consisting of rectenna and power management circuit. The system achieves high efficiency and is suitable for supplying low-power wireless sensor nodes for indoor applications.
INTERNATIONAL JOURNAL OF MICROWAVE AND WIRELESS TECHNOLOGIES
(2022)
Article
Multidisciplinary Sciences
Nguyen Minh Tam, Trung Hai Nguyen, Vu Thi Ngan, Nguyen Thanh Tung, Son Tung Ngo
Summary: This study demonstrates the efficiency of umbrella sampling (US) simulation in determining the unbinding pathway and binding affinity of small molecule inhibitors to SARS-CoV-2 Mpro. The accuracy of US is comparable to other methods and provides detailed insights into the binding mechanism between inhibitors and SARS-CoV-2 Mpro.
ROYAL SOCIETY OPEN SCIENCE
(2022)
Article
Biotechnology & Applied Microbiology
Van Hoang Nguyen, Dung T. Nguyen, T. Tung Nguyen, H. Phuong T. Nguyen, H. Binh Khuat, T. Hung Nguyen, V. Khanh Tran, S. Woong Chang, Phuong Nguyen-Tri, D. Duc Nguyen, Duc Duong La
Summary: In this study, activated carbon with an ultra-high surface area was fabricated from sawdust by simple, one-step chemical activation. The sawdust activated carbon exhibited a high and rapid removal efficiency toward Rhodamine B, with a removal percentage of nearly 100% after 10 min at an RhB concentration of 10 ppm. The effect of the pH solution on RhB removal performance by sawdust activated carbon showed that the sAC absorbed more than 90% of the RhB in all the pH at room temperature solutions.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Optics
Duong Thi Ha, Bui Son Tung, Bui Xuan Khuyen, Thanh Son Pham, Nguyen Thanh Tung, Nguyen Hoang Tung, Nguyen Thi Hoa, Vu Dinh Lam, Haiyu Zheng, Liangyao Chen, YoungPak Lee
Summary: A dual-band, polarization-insensitive, ultrathin and flexible metamaterial absorber was demonstrated based on high-order magnetic resonance. The absorption performance was investigated for both planar and bending models, showing a single peak at 4.3 GHz with 98% absorption in the planar model and additional high-order peaks in the bending structure. This work could be beneficial for future device realization and development, such as emitters, detectors, sensors, and energy converters.
Article
Optics
Le Van Long, Nguyen Sy Khiem, Bui Son Tung, Nguyen Thanh Tung, Trinh Thi Giang, Pham Thanh Son, Bui Xuan Khuyen, Vu Dinh Lam, Liangyao Chen, Haiyu Zheng, Youngpak Lee
Summary: A flexible broadband metamaterial perfect absorber (FBMPA) was proposed in this work, using conductive-graphene ink pasted on a polyimide substrate. The FBMPA showed an absorption over 90% covering a wide frequency range, and maintained stable high absorption even under oblique incidence and when wrapped around cylindrical surfaces. The absorption mechanism was explained by perfect impedance matching and dielectric loss of the absorber, providing groundwork for future applications in meta-devices such as sensors, optical filters/switchers, photodetectors, and energy converters.
Article
Chemistry, Physical
Ngo Thi Lan, Nguyen Thi Mai, Duong Duc La, Nguyen Minh Tam, Son Tung Ngo, Ngo Tuan Cuong, Nguyen Van Dang, Thu Thi Phung, Nguyen Thanh Tung
Summary: By doping the Au-10(2+) cluster with 3d transition metal atoms, the study explores superatomic clusters as analogues of more complex molecules. It is found that Au9M2+ exhibits different structural evolution patterns and stable magnetic behavior.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Polymer Science
Linh Nguyen Pham Duy, Chuong Bui, Liem Thanh Nguyen, Tung Huy Nguyen, Nguyen Thanh Tung, Duong Duc La
Summary: This study investigates the dispersion of graphene nanoplatelets (GNPs) in natural rubber (NR) matrix using dioctyl phthalate (DOP) modification. The modified GNPs effectively improve the abrasion resistance, shear strength, and tensile strength of the rubber composite. The presence of graphene slightly reduces some mechanical properties but remains significant as an effective additive for high abrasion resistance.
Article
Chemistry, Multidisciplinary
Ngo Thi Lan, Nguyen Thi Mai, Ngo Tuan Cuong, Phung Thi Hong Van, Duong Duc La, Nguyen Minh Tam, Son Tung Ngo, Nguyen Thanh Tung
Summary: In this study, the interaction of H2 with small-sized AgnCr (n = 1-12) was investigated using density functional theory calculations. It was found that the cluster structures remained preserved during the adsorption process, and relatively stable adsorption configurations were identified.
Article
Chemistry, Physical
Ngo Thi Lan, Nguyen Thi Mai, Duong Duc La, Son Tung Ngo, Nguyen Minh Tam, Nguyen Van Dang, Nguyen Thanh Tung
Summary: In this study, the interaction between hydrogen molecules and Au9M2+ clusters was investigated using density-functional theory (DFT). The preferred adsorption configuration of hydrogen on these clusters was found to be influenced by factors such as surface/encapsulated position, relative electronegativity, and coordination number of atoms. The research provides insights into the mechanisms underlying hydrogen adsorption and can aid further theoretical and experimental studies of hydrogenation in nanostructured materials.
CHEMICAL PHYSICS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Thi Quynh Xuan Le, Linh Nhat Nguyen, Thanh Tung Nguyen, Eun Ha Choi, Quang Liem Nguyen, Nagendra Kumar Kaushik, Nguyen Thuan Dao
Summary: This study investigated the effects of plasma treatment on the germination and growth of mung bean seeds and determined the optimal treatment parameters. The results showed that plasma treatment significantly enhanced germination and growth, and the mechanism behind the treatment effects was revealed through observations and measurements of the seed coating.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Multidisciplinary
Son Tung Ngo, Trung Hai Nguyen, Duc-Hung Pham, Nguyen Thanh Tung, Pham Cam Nam
Summary: Understanding the thermodynamics and kinetics of the binding process between antibodies and the SARS-CoV-2 receptor-binding domain (RBD) is crucial for COVID-19 vaccine development. The study revealed that the South African variant (B1.351 or 501Y.V2) can resist neutralizing antibodies due to three substitutions in the RBD. These mutations alter various properties of the RBD + NAb complex, resulting in decreased binding affinity between the antibody and 501Y.V2 RBD.
