Article
Optics
Junsen Wang, Youjin Deng, Wei Zheng
Summary: Through studying the two-dimensional Su-Schrieffer-Heeger-Bose-Hubbard model, it was shown that topological Higgs amplitude modes exist in the strongly interacting superfluid phase. These modes exhibit different characteristics at different filling limits, but their topological properties remain unchanged.
Article
Materials Science, Multidisciplinary
Jorge David Castano-Yepes, Enrique Munoz
Summary: This article investigates confined electronic states and optical transitions in 3D topological insulator nanoparticles, focusing on triangular-shaped nanoplates which provide a more realistic approximation to experimentally observed morphologies. The study derives analytical expressions for the confined eigenstates and energy spectrum, and identifies conditions for the emergence of topologically trivial surface states. Additionally, the article explores optical transitions and selection rules imposed by nanoparticle size and morphology.
RESULTS IN PHYSICS
(2022)
Article
Physics, Multidisciplinary
Yuzhou G. N. Liu, Pawel S. Jung, Midya Parto, Demetrios N. Christodoulides, Mercedeh Khajavikhan
Summary: Tailoring hopping interactions between constituent elements of a physical system is crucial for observing unusual phenomena. Through the use of non-Hermitian concepts, tailored asymmetric interactions have been realized in photonic integrated platforms, enabling the induction of topological behaviors and the observation of topological responses.
Article
Physics, Multidisciplinary
Gal Shavit, Yuval Oreg
Summary: In this Letter, we investigate interacting systems with spontaneous discrete symmetry breaking and find that the degenerate symmetry-broken states are topologically distinct gapped phases. Edge modes emerge at the interfaces between the two topological phases. By introducing a weak disorder field related to the order parameter, we observe a thermal transition from a gapped uniform phase to a phase with disorder-induced domain structure driven by the entropy of the edge modes. We describe this transition using a phenomenological Landau functional and validate our findings with a specific microscopic model. Furthermore, we discuss the potential experimental manifestations of this phase transition and suggest graphene-based moiré heterostructures as promising materials for detecting such transitions.
PHYSICAL REVIEW LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Toshihiro Sato, Martin Hohenadler, Tarun Grover, John McGreevy, Fakher F. Assaad
Summary: （English Summary:）
In the system of Dirac fermions in (2 + 1) dimensions with dynamically generated anticommuting SO(3) antiferromagnetic and Z(2) Kekule valence-bond solid (KVBS) masses, there exists a field theory with a topological theta term that allows for continuous phase transitions. The presence of topological defects and the theta term play crucial roles in the transition process in this system.
Article
Optics
Xiao Xiong, Daniel Clarke, Yiming Lai, Ping Bai, Ching Eng Png, Lin Wu, Ortwin Hess
Summary: Plasmonic nanocavities are a promising platform for various applications such as spectroscopy, sensing, and photonic quantum information processing. To maximize their potential, it is important to continually innovate in cavity design and develop robust strategies for engineering plasmonic mode characteristics, to optimize spatial and spectral matching conditions for strong light-matter interaction.
Article
Materials Science, Multidisciplinary
V. S. Gerasimov, A. E. Ershov, R. G. Bikbaev, I. L. Rasskazov, I. L. Isaev, P. N. Semina, A. S. Kostyukov, V. Zakomirnyi, S. P. Polyutov, S. Karpov
Summary: The Kerker effect has been largely abandoned but experienced a revival with the emergence of all-dielectric nanophotonics, and can now be observed in nanostructures made of high-index materials. By adjusting the geometrical parameters of Al arrays, the lattice Kerker effect can be tailored in the UV and visible wavelength ranges, presenting a challenge for achieving this with other materials. The results of this study have far-reaching implications for plasmonics and the further application of the Kerker effect.
Article
Materials Science, Multidisciplinary
Loredana M. Vasiloiu, Apoorv Tiwari, Jens H. Bardarson
Summary: This study investigates the coherence times of Majorana zero modes in different scenarios by explicitly computing their closed form expressions in models of various dimensional superconductors. The results show enhanced coherence times for a certain class of Majorana operators under specific dissipative dynamics, while the coherence of the remaining operators decays much faster. Additionally, the numerical simulations demonstrate the robustness of the coherence times to the presence of disorder.
Article
Nanoscience & Nanotechnology
Tingli He, Xiaoming Zhang, Yefeng Li, Lei Jin, Ying Liu, Guodong Liu, Hongkuan Yuan
Summary: This study predicts a two-dimensional higher-order topological insulator material, Ni3(C6S6), in metal-organic frameworks. The non-trivial topology of the material is confirmed through two different bulk topological invariants, and the presence of corner states serves as an indicator of its non-trivial topology. Furthermore, the topological properties of the material are found to be stable against symmetry perturbations and spin-orbit coupling.
MATERIALS TODAY NANO
(2023)
Article
Physics, Multidisciplinary
Afshan Begum, Yuanzhao Yao, Takashi Kuroda, Yoshihiko Takeda, Naoki Ikeda, Yoshimasa Sugimoto, Takaaki Mano, Kazuaki Sakoda
Summary: The researchers have successfully achieved a complete common band gap in photonic crystals fabricated on silicon, which is crucial for the existence of topologically protected edge modes. They confirmed the band inversion through experimental methods and observed the localized edge modes on the boundary, obtaining their dispersion relation.
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
(2023)
Article
Materials Science, Multidisciplinary
Kelvin Koor, Raditya Weda Bomantara, Leong Chuan Kwek
Summary: This work investigates the interplay between periodic driving, interaction effects, and Z2 symmetry in a two-dimensional spin-1/2 lattice, leading to the emergence of Floquet symmetry protected second-order topological phases. The formation of corner-localized 0 and π modes is verified, and the topological nature of these modes is established by deriving their associated topological invariants under special conditions.
Article
Multidisciplinary Sciences
Rahmat Hidayat, Jalu Setiya Pradana, Alvin Fariz, Susi Komalasari, Siti Chalimah, Herman Bahar
Summary: Rectangular wave-shaped surface-relief plasmonic gratings (RSR-PGs) were fabricated using a nanoimprint photocuring lithography technique and metallization with gold nanolayer. Reflectance spectral dip was observed in the visible light region when a one-dimensional plasmonic grating with a periodicity of approximately 700 nm was formed. The dip was associated with surface plasmon resonance (SPR) wave excitation and was consistent with the simulation results using the rigorous coupled wave analysis (RCWA) method. The RSR-PGs exhibited richer plasmon characteristics compared to sine wave-shaped plasmonic gratings.
SCIENTIFIC REPORTS
(2023)
Review
Multidisciplinary Sciences
Shuai Li, Tianyu Liu, Chang Liu, Yayu Wang, Hai-Zhou Lu, X. C. Xie
Summary: Topological materials with robust surface and/or edge states have become a focus of research in condensed matter physics. Magnetic topological materials, such as MnBi2Te4, have attracted considerable attention due to their potential for studying the interplay between topological and magnetic orders. This review summarizes the progress made on MnBi2Te4, including its crystal and magnetic structures, theoretical calculations, experimental probes, and possible future research directions.
NATIONAL SCIENCE REVIEW
(2023)
Article
Chemistry, Physical
Shahab Tavana, Shahram Bahadori-Haghighi
Summary: A metal-insulator-metal (MIM) structure consisting of a semi-circular resonant cavity (SCRC) and a circular split-ring resonator (SRR) is proposed and designed for optical sensing applications. The coupling between the SCRC and SRR can create dual Fano resonances in the visible range. The structure exhibits a high sensitivity and figures of merit, making it potentially useful for plasmonic nanosensors and slow-light devices.
Article
Physics, Multidisciplinary
Ashley M. Cook, Joel E. Moore
Summary: This article uncovers a new class of multiplicative topological phases using symmetry, which have nontrivial topological properties and can carry current at the edges of the sample. Considerable understanding of these phases has been gained recently by considering additional protecting symmetries, different types of quasiparticles, and systems out of equilibrium. The authors construct a large class of previously unidentified multiplicative topological phases characterized by tensor product Hilbert spaces, and demonstrate their methods by introducing multiplicative topological phases based on Hopf and Chern insulator phases.
COMMUNICATIONS PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Maciej Klein, Yutao Wang, Jingyi Tian, Son Tung Ha, Ramon Paniagua-Dominguez, Arseniy Kuznetsov, Giorgio Adamo, Cesare Soci
Summary: Emerging immersive visual communication technologies require light sources with complex functionality for dynamic control of light properties. Flat optics based on artificially structured metasurfaces offer a viable solution, but integrating them into electrically driven devices is challenging. This study demonstrates a new approach to monolithic integration of a dielectric metasurface into a perovskite light-emitting transistor, enhancing the electroluminescence intensity and enabling dynamic tunability of polarization. This concept opens up unlimited opportunities for light management strategies based on metasurface design and integration.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Applied
Tsekwi Gracious Rinwi, Da-Wen Sun, Ji Ma, Qi-Jun Wang
Summary: This study investigated the potential of isochoric freezing for chicken breast meat for the first time. The effects of temperature, pressure, and solution concentration on quality characteristics of the meat were evaluated. The results showed that increasing NaCl concentrations depressed freezing temperature and pressure, and samples treated in 2.5% NaCl solution at -4℃ and -8℃ exhibited no significant difference compared with the control.
Article
Environmental Sciences
Yu Zhang, Guiping Ren, Qijun Wang, Wenqing Xie, Zunzhuang Ke, Xu Zhao
Summary: This study demonstrates for the first time the enhanced carbon conversion efficiency between Lactococcus lactis and natural hematite under light illumination, and simulates the phenomenon in different systems, verifying its prevalence. This sunlight-triggered carbon cycle pathway is of great significance in nature.
GEOMICROBIOLOGY JOURNAL
(2023)
Article
Engineering, Environmental
Zhou Cao, Yunpu Zhao, Jingmai Li, Qizhao Wang, Qiong Mei, Hongfei Cheng
Summary: A novel highly dispersed PdO/g-C3N4/kaolinite (P/CNK) composite was synthesized for the efficient degradation of tetracycline hydrochloride (TCH) using peroxymonosulfate (PMS) under visible light. The 4% P/CNK catalyst exhibited excellent catalytic ability for TCH degradation (94.5%) within 20 minutes. The composite's favorable specific surface area and pore volume allowed for the high dispersion of PdO and the adsorption of PMS, while the presence of kaolinite enhanced the self-decomposition of PMS. The system also demonstrated good degradation efficiency under different pH conditions and maintained its catalytic activity after five cycles.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Shulin Dong, Qi Wang, Ruirun Chen, Yingdong Qu, Jingjie Guo, Guanglong Li, Wei Zhang, Bo Yu
Summary: In order to investigate the effect of temperature gradient on the microstructure and fracture toughness of high-Nb TiAl-based alloy prepared by cold crucible directional solidification (CCDS), an alloy ingot of Ti-44Al-8Nb-0.1B was prepared using CCDS with different input powers. The increase in input power led to a higher temperature gradient, resulting in the formation of a directional solidification microstructure. The alloy prepared at the highest input power exhibited the best fracture toughness, attributed to a banded microstructure. The study also clarified the conditions required to obtain this banded microstructure.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Coatings & Films
Haoqiang Zhang, Haiqing Li, Guidi Chen, Jianxing Su, Min Wei, Cunqiang Ma, Jingsheng Bai, Qimin Wang
Summary: Poor oxidative performance limits the applications of refractory alloys due to the non-protective nature of their oxide scales. B-modified MoSi2 coating is a widely investigated protective coating system for refractory alloys developed in recent decades. To further modify the oxidation resistance of Mo-Si-B coatings, Mo-W-Si-B coatings are synthesized in situ on the surfaces of Mo-20W alloy substrates using a halide-activated pack-cemented Si-B co-deposition process, and their isothermal oxidation behavior at 1200 and 1650 degrees C in static air is investigated. The results indicate that the Mo-W-Si-B coatings have better oxidation resistance than Mo-Si-B coatings at both temperatures. Fewer mass changes of -4.36 and -0.39 mg/cm2 were obtained by the Mo-W-Si-B coatings at 1200 degrees C for 1000 h and 1650 degrees C for 4 h, respectively. The oxidation process of the Mo-W-Si-B coatings was elaborated on, and the improved performance was attributed to the slower Si consumption and better stability of the borosilicate scale in the Mo-W-Si-B coatings.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Eng Aik Chan, Carolina Rendon-Barraza, Benquan Wang, Tanchao Pu, Jun-Yu Ou, Hongxin Wei, Giorgio Adamo, Bo An, Nikolay I. I. Zheludev
Summary: This article introduces a super-resolution single-shot optical method for counting and mapping subwavelength particles on a surface. The method uses deep learning analysis of the intensity profile of scattered light to accurately count and map the particles. The method has been demonstrated to have high accuracy in particle counting and mapping, and can be applied to various types of nanoparticulates and high-speed counting tasks.
Article
Physics, Multidisciplinary
Qiandong Ran, Joel Stephen Short, Qi Jie Wang, Hao Li
Summary: We have successfully generated an all-solid-state deep-ultraviolet (DUV) laser at 206 nm using 5th harmonic generation with a 197-W, 10-kHz, 1.2-ps, 1,030-nm Yb:YAG laser. The DUV laser provides pulses of 180 mu J-582 fs with a peak power of 291 MW, which is the highest peak power at 206 nm ever achieved by an all-solid-state kHz DUV laser source driven at 1 μm wavelength. This represents a one order of magnitude improvement compared to the previous state-of-the-art record.
FRONTIERS IN PHYSICS
(2023)
Article
Environmental Sciences
Zhong Zhuang, Qiqi Wang, Siyu Huang, Andrea Giovanna NinoSavala, Yanan Wan, Huafen Li, Andreas H. Schweiger, Andreas Fangmeier, Juergen Franzaring
Summary: This study investigated the risk of cadmium accumulation in soil and wheat/maize systems in China. The results identified mining activities, sewage irrigation, industrial activities, and agricultural practices as critical factors contributing to cadmium accumulation. The study also developed cadmium enrichment models to predict cadmium levels in wheat and maize grains, providing valuable insights for risk assessments and predictions of cadmium accumulation.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Ren-Wu Huang, Xin Song, Shulin Chen, Jun Yin, Partha Maity, Jiayi Wang, Bingyao Shao, Hongwei Zhu, Chunwei Dong, Peng Yuan, Taimoor Ahmad, Omar F. F. Mohammed, Osman M. M. Bakr
Summary: Zero-dimensional (0D) scintillation materials are of great interest for the fabrication of flexible high-energy radiation scintillation screens. Challenges still persist in the development of 0D scintillators, but a strategy based on metal nanoclusters shows promise in overcoming these limitations. This work demonstrates the synthesis and self-assembly of atomically precise nanoclusters with high phosphorescence quantum yield, AIEE behavior, and intense radioluminescence. The self-assembled nanoclusters can be used as building blocks for flexible particle-deposited scintillation films with high-resolution X-ray imaging performance.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Prakash T. Parvatkar, Sharath Kandambeth, Aslam C. Shaikh, Issatay Nadinov, Jun Yin, Vinayak S. Kale, George Healing, Abdul-Hamid Emwas, Osama Shekhah, Husam N. Alshareef, Omar F. Mohammed, Mohamed Eddaoudi
Summary: Heterogeneous photocatalysis is an ecofriendly and sustainable method for addressing energy and environmental issues. Heterogeneous photocatalysts based on covalent organic frameworks (COFs) have gained attention due to their performance and recyclability, offering a prospective alternative to homogeneous photocatalysts based on precious metal/organic dyes.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Materials Science, Coatings & Films
Dongsen Geng, Yu X. Xu, Qimin Wang
Summary: In this study, Cr-O/Al-O coatings were fabricated using a hybrid deposition technique to reduce growth defects. The optimized process conditions resulted in high hardness Cr-O/Al-O coatings. These coatings exhibited excellent chemical inertness, making them promising protective layers for cutting tools.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Guolin Zheng, Cheng Tan, Zheng Chen, Maoyuan Wang, Xiangde Zhu, Sultan Albarakati, Meri Algarni, James Partridge, Lawrence Farrar, Jianhui Zhou, Wei Ning, Mingliang Tian, Michael S. Fuhrer, Lan Wang
Summary: The authors demonstrate in CsV3Sb5 nanodevices that electrically controlled proton intercalation has significant impacts on quantum phenomena, such as superconductivity, charge density wave, and anomalous Hall effect. Disorder in thin nanoflakes leads to a quantum phase transition from a superconductor to a failed insulator, while carrier density modulation in thicker nanoflakes results in an extrinsic-intrinsic transition of the anomalous Hall effect.
NATURE COMMUNICATIONS
(2023)
Article
Environmental Sciences
Zhe Dong, Hong Yan Yao, Shi Cheng Yu, Fei Huang, Jian Jun Liu, Yan Lin Zhao, Qi Q. Wang
Summary: This study evaluated the trend of notified incidence of pulmonary tuberculosis (PTB) in China at different periods by population and region. The results showed a continuous decline in the notified incidence of PTB in China from 2005 to 2020. High-risk groups such as males, older adults, high-burden areas, and rural regions require proactive screening and timely management services.
BIOMEDICAL AND ENVIRONMENTAL SCIENCES
(2023)
Article
Public, Environmental & Occupational Health
Jiaxin Dong, Qiqi Wang, Jue Liu, Hongyan Yao, Xiao Qi, Jianjun Liu
Summary: This report reveals that sanitation of public places has been a major focus of environmental sanitation construction in China, crucial to the goal of building national healthy cities and counties. The study findings indicate that residents' satisfaction with the sanitation of transportation hubs like railway stations ranked the highest, while farmers' markets ranked the lowest. The implications for public health practice are that this study provides valuable insights for government decision-makers to improve sanitation in key public places and further promote the construction of national healthy cities and counties.
