Article
Chemistry, Physical
Kabir Hossain, Thennarasan Sabapathy, Muzammil Jusoh, Ping Jack Soh, Mohd Haizal Jamaluddin, Samir Salem Al-Bawri, Mohamed Nasrun Osman, R. Badlishah Ahmad, Hasliza A. Rahim, Mohd Najib Mohd Yasin, Nitin Saluja
Summary: This study presents an electrically tunable textile-based metamaterial (MTM) with left-handed characteristics and negative permittivity and permeability within specific frequency ranges. The proposed MTM unit cell and arrays were independently studied and experimentally verified, showing tunable transmission coefficient and dynamic operation potential for microwave wearable applications.
Article
Optics
Shaohua Zhang, Zhifu Wei, Ling Xu, Jianwei Xu, Shoujian Ouyang, Yun Shen
Summary: A method to achieve dual-band terahertz left-handed metamaterials was proposed using silver plasmonic fishnet structures, which resulted in negative permittivity and permeability. Experimental results confirmed negative refraction, potentially enabling practical applications in terahertz imaging, sensors, and communication.
Article
Biochemistry & Molecular Biology
Poulomi Das, Khac Huy Ngo, Fernaldo Richtia Winnerdy, Arijit Maity, Blaz Bakalar, Yves Mechulam, Emmanuelle Schmitt, Anh Tuan Phan
Summary: This study investigates the adaptability of left-handed G4 structures towards the presence of bulges, presenting the structural characteristics of left-handed G4s accommodating varying numbers of bulges. Bulges in left-handed G4s exhibit distinct features compared to those in right-handed G4s, and elucidation of the intricate structural details may enhance understanding of the potential roles and limitations of these unique structures.
NUCLEIC ACIDS RESEARCH
(2021)
Article
Computer Science, Information Systems
Samir Salem Al-Bawri, Mohammad Tariqul Islam, Kabir Hossain, Thennarasan Sabapathy, Muzammil Jusoh
Summary: This paper presents a textile-based C-shaped split-ring resonators (SRR) metamaterial (MTM) unit cells with an electrical tunability function. The proposed MTM exhibits negative index physical characteristics and tunable transmission coefficient. This research is of great significance for microwave-wearable applications.
CMC-COMPUTERS MATERIALS & CONTINUA
(2022)
Article
Computer Science, Information Systems
Iulia Andreea Mocanu
Summary: A compact 3-dB dual band ring coupler is designed using LH transmission line's duality principle, achieving size reduction and good performance in testing.
Article
Nanoscience & Nanotechnology
Takumi Kaneda, Tetsuya Ueda
Summary: Dual-band composite right/left-handed transmission lines with nonreciprocal phase shift controlled by external magnetic field are proposed and demonstrated. The dynamic change in the nonreciprocal phase gradient enables the realization of dual-band and unidirectional leaky-wave antennas without frequency-dependent change in beam direction. A prototype nonreciprocal metamaterial line using polycrystalline yttrium iron garnet is fabricated and measured for verification.
Article
Biophysics
Kevin Li, Liliya A. Yatsunyk, Stephen Neidle
Summary: Left-handed G quadruplexes (LHG4) have been discovered as a new type of G quadruplexes. Our study demonstrates that specific backbone torsion angles can differentiate between right-handed and left-handed G quadruplexes as well as other DNA structures. This analysis provides insights into the conditions of formation for LHG4s and their potential biological relevance.
BIOPHYSICAL JOURNAL
(2022)
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
Chemistry, Multidisciplinary
Poulomi Das, Anh Tuan Phan
Summary: This study demonstrates that ligands specific for right-handed G4s do not bind specifically to left-handed G4s, as the presence of tight T-capping in left-handed G4s hinders access to the tetrads.
CHEMICAL COMMUNICATIONS
(2022)
Article
Physics, Applied
Azakine Sindanne Sylvere, Vroumsia David, Mibaile Justin, Mora Joseph, Gambo Betchewe, Mustafa Inc
Summary: This paper investigates the effects of non-integer dimensional space (NDS) and normalized frequency on modulational instability (MI) gain in lossless left-handed metamaterials (LHM). The nonlinear Schrodinger equation (NLSE) with non-integer transverse laplacian is derived, and the MI gain expression is determined using linear stability analysis. The results show that increasing normalized frequency enhances both the amplitude and bandwidth of MI gain, and waves are more unstable due to non-integer dimension. These findings have newer applications in telecommunication through the construction of fractal-shaped antennas operating in multi-frequency bands.
MODERN PHYSICS LETTERS B
(2023)
Article
Biochemistry & Molecular Biology
Lin Li, Yaping Zhang, Wanzhi Ma, Hui Chen, Mengqin Liu, Ran An, Bingxiao Cheng, Xingguo Liang
Summary: In vivo, left-handed DNA duplex (Z-DNA) is mainly formed in the region of DNA with alternating purine pyrimidine (APP) sequence and plays important biological roles. The study found that under strong topological constraint, non-APP sequences can also form stable left-handed DNA duplex as APP sequences. The thermal stability difference between Z-form and B-form is smaller for APP sequences, which may explain why Z-DNA forms preferentially for APP sequences.
NUCLEIC ACIDS RESEARCH
(2022)
Article
Robotics
Mingxing Cheng, Qingwei Li
Summary: This study focuses on the formation mechanism of helical actuators, discovering that the anisotropic expansion and Young's modulus of the active layer are crucial for helical curling. These key factors may interact or compete with each other, with the dominant factor determining the chirality.
Article
Engineering, Biomedical
Yoonjung Kim, Hyunjoon Chang, Taeyoung Yoon, Woobum Park, Hyunsung Choi, Sungsoo Na
Summary: Silk fibers are known for their exceptional mechanical properties, such as being over 7 times tougher than Kevlar 49 Fibre. A large portion of the superior properties of silk comes from its naturally formed nano-fishnet structures, which can be controlled by humidity and Arginine density. Understanding and manipulating these nano-fishnet structures could lead to advancements in protein and synthetic fiber design.
ACTA BIOMATERIALIA
(2021)
Article
Physics, Multidisciplinary
Eistiak Ahamed, Mohammad Rashed Iqbal Faruque, Ahmed Mahfuz Tamim, Mohammad Tariqul Islam, Mohd Fais Bin Mansor, Mohammad Badal Ahmmed
Summary: In this work, a narrow metal strip inspired by left-handed metamaterial and sensitive LC resonator structure is designed for microwave sensing applications, exhibiting high sensitivity and field enhancement effects. The proposed metamaterial tunnelling structure is potentially useful for various sensing applications.
CHINESE JOURNAL OF PHYSICS
(2021)
Article
Biochemistry & Molecular Biology
Joel M. Harp, Leighton Coates, Brendan Sullivan, Martin Egli
Summary: Cryo neutron crystallography was used to investigate the hydrogen bonding patterns of water molecules around a left-handed Z-DNA duplex, revealing orientations of first-shell and second-shell water molecules and uncovering hydration motifs within the minor groove, on the convex surface, and bridging nucleobase and phosphate oxygen atoms. The high-resolution neutron density visualized for the first time pinpointed the orientations of water molecules in contact with the DNA, highlighting unexpected orientations and surprising stabilization effects of exocyclic amino groups of guanine and cytosine. This structure provides the most detailed view to date of DNA solvation in the solid-state unaffected by metal ions or polyamines.
NUCLEIC ACIDS RESEARCH
(2021)
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.
Correction
Materials Science, Multidisciplinary
A. D. Boccardo, M. Tong, S. B. Leen, D. Tourret, J. Segurado
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
Tao Li, Qing Hou, Jie-chao Cui, Jia-hui Yang, Ben Xu, Min Li, Jun Wang, Bao-qin Fu
Summary: This study investigates the thermal and defect properties of AlN using molecular dynamics simulation, and proposes a new method for selecting interatomic potentials, developing a new model. The developed model demonstrates high computational accuracy, providing an important tool for modeling thermal transport and defect evolution in AlN-based devices.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
Shin-Pon Ju, Chao-Chuan Huang, Hsing-Yin Chen
Summary: Amorphous boron nitride (a-BN) is a promising ultralow-dielectric-constant material for interconnect isolation in integrated circuits. This study establishes a deep learning potential (DLP) for different forms of boron nitride and uses molecular dynamics simulations to investigate the mechanical behaviors of a-BN. The results reveal the structure-property relationships of a-BN, providing useful insights for integrating it in device applications.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
M. Salman, S. Schmauder
Summary: Shape memory polymer foams (SMPFs) are lightweight cellular materials that can recover their undeformed shape through external stimulation. Reinforcing the material with nano-clay filler improves its physical properties. Multiscale modeling techniques can be used to study the thermomechanical response of SMPFs and show good agreement with experimental results.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
Laura Gueci, Francesco Ferrante, Marco Bertini, Chiara Nania, Dario Duca
Summary: This study investigates the acidity of 30 Bronsted sites in the beta-zeolite framework and compares three computational methods. The results show a wide range of deprotonation energy values, and the proposed best method provides accurate calculations.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
K. A. Lopes Lima, L. A. Ribeiro Junior
Summary: Advancements in nanomaterial synthesis and characterization have led to the discovery of new carbon allotropes, including biphenylene network (BPN). The study finds that BPN lattices with a single-atom vacancy exhibit higher CO2 adsorption energies than pristine BPN. Unlike other 2D carbon allotropes, BPN does not exhibit precise CO2 sensing and selectivity by altering its band structure configuration.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
Jay Kumar Sharma, Arpita Dhamija, Anand Pal, Jagdish Kumar
Summary: In this study, the quaternary Heusler alloys LiAEFeSb were investigated for their crystal structure, electronic properties, and magnetic behavior. Density functional theory calculations revealed that LiSrFeSb and LiBaFeSb exhibit half-metallic band structure and 100% spin polarization, making them excellent choices for spintronic applications.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
Roman A. Eremin, Innokentiy S. Humonen, Alexey A. Kazakov, Vladimir D. Lazarev, Anatoly P. Pushkarev, Semen A. Budennyy
Summary: Computational modeling of disordered crystal structures is essential for studying composition-structure-property relations. In this work, the effects of Cd and Zn substitutions on the structural stability of CsPbI3 were investigated using DFT calculations and GNN models. The study achieved accurate energy predictions for structures with high substitution contents, and the impact of data subsampling on prediction quality was comprehensively studied. Transfer learning routines were also tested, providing new perspectives for data-driven research of disordered materials.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
Zhixin Sun, Hang Dong, Yaohui Yin, Ai Wang, Zhen Fan, Guangyong Jin, Chao Xin
Summary: In this study, the crystal structure, electronic structure, and optical properties of KH2PO4: KDP crystals under different pressures were investigated using the generalized gradient approximate. It was found that high pressure caused a phase transition in KDP and greatly increased the band gap. The results suggest that high pressure enhances the compactness of KDP and improves the laser damage threshold.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
Tingting Yu
Summary: This study presents atomistic simulations revealing that an increase in driving force may result in slower grain boundary movement and switches in the mode of grain boundary shear coupling migration. Shear coupling behavior is found to effectively alleviate stress and holds potential for stress relaxation and microstructure manipulation in materials.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
Y. Zhang, X. Q. Deng, Q. Jing, Z. S. Zhang
Summary: The electronic properties of C2N/antimonene van der Waals heterostructure are investigated using density functional theory. The results show that by applying horizontal strain, vertical strain, electric field, and interlayer twist, the electronic structure can be adjusted. Additionally, the band alignment and energy states of the heterostructure can be significantly changed by applying vertical strain on the twisted structure. These findings are important for controlling the electronic properties of heterostructures.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
Chad E. Junkermeier, Evan Larmand, Jean-Charles Morais, Jedediah Kobebel, Kat Lavarez, R. Martin Adra, Jirui Yang, Valeria Aparicio Diaz, Ricardo Paupitz, George Psofogiannakis
Summary: This study investigates the adsorption properties of carbon dioxide (CO2), methane (CH4), and dihydrogen (H2) in carbophenes functionalized with different groups. The results show that carbophenes can be promising adsorbents for these gases, with high adsorption energies and low desorption temperatures. The design and combination of functional groups can further enhance their adsorption performance.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
Y. Borges, L. Huber, H. Zapolsky, R. Patte, G. Demange
Summary: Grain boundary structure is closely related to solute atom segregation, and machine learning can predict the segregation energy density. The study provides a fresh perspective on the relationship between grain boundary structure and segregation properties.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
M. R. Jones, L. T. W. Fey, I. J. Beyerlein
Summary: In this work, a three-dimensional ab-initio informed phase-field-dislocation dynamics model combined with Langevin dynamics is used to investigate glide mechanisms of edge and screw dislocations in Nb at finite temperatures. It is found that the screw dislocation changes its mode of glide at two distinct temperatures, which coincides with the thermal insensitivity and athermal behavior of Nb yield strengths.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
Joshua A. Vita, Dallas R. Trinkle
Summary: This study introduces a new machine learning model framework that combines the simplicity of spline-based potentials with the flexibility of neural network architectures. The simplified version of the neural network potential can efficiently describe complex datasets and explore the boundary between classical and machine learning models. Using spline filters for encoding atomic environments results in interpretable embedding layers that can incorporate expected physical behaviors and improve interpretability through neural network modifications.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
