Article
Chemistry, Multidisciplinary
Aurelie Champagne, Jonah B. Haber, Supavit Pokawanvit, Diana Y. Qiu, Souvik Biswas, Harry A. Atwater, Felipe H. da Jornada, Jeffrey B. Neaton
Summary: The weak and nonlocal dielectric screening in 2D materials leads to high sensitivity of their optoelectronic properties to environment. This study uses ab initio GW and Bethe-Salpeter equation calculations to investigate the doping dependence of the quasiparticle and optical properties of 2H MoTe2. The results show a significant quasiparticle band gap renormalization and exciton binding energy decrease with increasing doping density, highlighting the importance of accurately accounting for both dynamical and local-field effects in photoluminescence measurements.
Article
Chemistry, Multidisciplinary
Daniel A. Rhodes, Apoorv Jindal, Noah F. Q. Yuan, Younghun Jung, Abhinandan Antony, Hua Wang, Bumho Kim, Yu-Che Chiu, Takashi Taniguchi, Kenji Watanabe, Katayun Barmak, Luis Balicas, Cory R. Dean, Xiaofeng Qian, Liang Fu, Abhay N. Pasupathy, James Hone
Summary: In semimetallic T-d-MoTe2, the superconductivity is dramatically enhanced with decreasing thickness, with a critical temperature (Tc) increasing up to 7.6 K for monolayers, showing a 60-fold increase compared to bulk Tc. The response to high in-plane magnetic fields is unique compared to other 2D superconductors, reflecting the canted spin texture of the electron pockets.
Article
Physics, Applied
Dong Li, Pengyu Liu, Ruiman He, Yihang Bai, Chang Liu, Bing Wang, Guanwei Jia
Summary: We propose a 2D multiferroic material, VSI2 monolayer, with both ferromagnetic and ferroelectric properties. It shows robust ferroelectricity and large magnetic anisotropy energy. Biaxial strain can change its magnetic and ferroelectric properties, providing opportunities for magnetic-electric control and memory devices.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Seohui Kang, Dongyeun Won, Heejun Yang, Chia-Hsien Lin, Ching-Shun Ku, Ching-Yu Chiang, Sera Kim, Suyeon Cho
Summary: This study investigates power-dependent laser thinning and phase control of semiconducting hexagonal MoTe2. Low-power laser thinning retains the crystal structure, while high-power laser thinning causes phase transition and chalcogen vacancies.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Souvik Biswas, Aurelie Champagne, Jonah B. Haber, Supavit Pokawanvit, Joeson Wong, Hamidreza Akbari, Sergiy Krylyuk, Kenji Watanabe, Takashi Taniguchi, Albert Davydov, Zakaria Y. Al Balushi, Diana Y. Qiu, Felipe H. da Jornada, Jeffrey B. Neaton, Harry A. Atwater
Summary: This study experimentally investigates the excitonic luminescence properties of monolayer MoTe2 and reveals the temperature dependence and interplay between exciton and trion. The results demonstrate that these properties are influenced by free-carrier screening, Pauli blocking, and band gap renormalization, in agreement with theoretical calculations. These findings contribute to the potential applications of monolayer MoTe2 in near-infrared optoelectronics and photonic devices.
Article
Chemistry, Physical
Mohammed Benali Kanoun
Summary: The theoretical study explored the effects of vacancy defects and biaxial strain on the properties of monolayer MoTe2, revealing that Te vacancies have lower formation energies and that Mo vacancies introduce a magnetic moment. Furthermore, nonmagnetic defect systems can exhibit a change in magnetic state under biaxial tensile strain, indicating a potential for engineering electronic and magnetic properties in applications such as spintronics.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Tao Xu, Aolin Li, Shanshan Wang, Yinlong Tan, Xiang'ai Cheng
Summary: This article introduces a strategy for the chemical vapor deposition synthesis of few-layer molybdenum telluride (MoTe2) with controllable proportions of the 2H and 1T' phases. The authors also propose a new understanding of the phase-controllable growth mechanism based on experimental results and calculations. The study reveals that lattice distortion caused by Te vacancies or structural strain may make 1T'-MoTe2 more stable, while sufficient Te supply and appropriate tellurization velocity are necessary for obtaining the dominant 2H-MoTe2 phase.
Article
Chemistry, Multidisciplinary
Jiafang Wu, Yizhi Li, Lingling Zhao, Tianao Dai, Xiangmiao Zhao, Lijun Meng
Summary: The study proposes a tunable Weyl semimetal state in substitutional disordered alloys MoTe2-xSx, showing that the number of Weyl points can vary based on the substitutional position of S. By utilizing shear and axial strain, the energies, separation distance of Weyl points, and Nwp can be changed to tune the topological strength. This finding offers a route to control the topological electronic properties.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Nanoscience & Nanotechnology
Zhuoliang Ni, A. V. Haglund, H. Wang, B. Xu, C. Bernhard, D. G. Mandrus, X. Qian, E. J. Mele, C. L. Kane, Liang Wu
Summary: Antiferromagnets are interesting materials for spintronics applications due to their fast dynamics and robustness against magnetic field perturbations. This study demonstrates that uniaxial strain can align the Neel vector in MnPSe3 down to the monolayer limit, showing evidence of long-range antiferromagnetic order and Ising-type Neel vector switching. The emergence of strain-controlled Ising order in the XY magnet MnPSe3 opens up new possibilities for compact antiferromagnetic spintronic devices in the two-dimensional limit.
NATURE NANOTECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Shiying Shen, Qian Wu, Ying Dai, Baibiao Huang, Yandong Ma
Summary: This study reports the realization of nonvolatile ferromagnetism in bilayer CrI3, where the magnetic ground state switches from antiferromagnetic to ferromagnetic when interfacing with monolayer MoSeTe. The obtained ferromagnetic transformation in bilayer CrI3 is attributed to the competition between orbital-dependent interlayer antiferromagnetic super-super-exchange and ferromagnetic super-super-exchange.
Article
Physics, Fluids & Plasmas
P. Kong, Peng Wang, Liang Zhou, Ran Li
Summary: The evolution of structural defects during phase transition plays a significant role in understanding the mechanism of solid-liquid transition. However, current research on topological defects lacks an accurate method to quantify the local changes of structural defects. This paper proposes the use of local volume fraction as a key parameter to accurately quantify the variation of structural defects. The experimental results show that the evolution of structural defects in the particle system is caused by the decrease of local volume fraction, and the critical value of phase transition can be determined by the minimum local volume fraction phi(min). Furthermore, the evolution law of structural defects suggests that the phase transition is continuous, consistent with Kosterlitz-Thouless-Halperin-Nelson-Young theory. Therefore, the quantitative analysis of structural defects using local volume fraction can provide a clearer understanding of the mechanism of solid-liquid phase transition.
Article
Chemistry, Physical
Jun-Ho Lee, Young-Woo Son
Summary: Using first-principles calculation methods, this study reveals multiple phase transitions in monolayered quantum spin Hall insulators under different gating or electron doping, including superconducting and charge density wave phases, leading to the formation of a topological nontrivial phase with fully filled bands.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Green & Sustainable Science & Technology
S. Aftab, M. Z. Iqbal, S. M. Wabaidur, Ganesh Koyyada
Summary: In this study, we demonstrated how to control the conduction type of 2H-MoTe2 by using trapped interface states between h-BN and SiO2, achieving a polarity inversion from ambipolar to selective n-type or p-type FETs. This research is important as it paves the way for fabricating photodiodes with low power consumption using transition metal dichalcogenides materials.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Nanoscience & Nanotechnology
Mari Ohfuchi, Akihiko Sekine
Summary: We investigated the 2D lateral heterojunctions of monolayer 1T'-WTe2 and monolayer 2H-MoTe2 and found that the QSH states appear at the junctions, which could be applied in future topological quantum computation.
ACS APPLIED NANO MATERIALS
(2023)
Article
Physics, Applied
Weiqing Tang, Xuefeng Wu, Yaping Wu, Zhiming Wu, Li Shuping, Junyong Kang
Summary: In this study, two-dimensional WSSe/CrN van der Waals heterostructures were designed to control valley polarization, resulting in significant valley splitting and anomalous Hall conductivity at the K valley. Additionally, the manipulation of valley splitting was achieved by in-plane strain and interlayer distance adjustments.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Qin Chang, Dong Jing, Xie Beibei, Wang Hongkun, Zhang Na, Zhao Chunhua, Qiao Congde, Liu Mingxia, Yang Xiaodeng, Li Tianduo
Summary: Poly(lactic-co-glycolic acid)(PLGA) with different molecular weights and LA/GA molar ratio was prepared and characterized in this study. The results demonstrated that PLGA(3.2) film with an LA/GA molar ratio of 52/48 is a promising curcumin carrier.
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
(2023)
Article
Engineering, Mechanical
Di Wang, Tian Tian, Song-Sheng Lin, Xiao-Long Liu, Ming-Xia Liu, Zhi-Fu Yin, Yu-Na Xue, Zhen Yang, Pei-Ying Bian, Ke-Song Zhou
Summary: In this study, CrNx/CrAlN multilayer coatings with different modulation periods were deposited on TC4 titanium alloy substrates via cathodic arc deposition. The effects of the modulation periods on the microstructure, mechanical properties, erosion resistance, and fracture failure mechanism of the coatings were investigated. The results reveal that the multilayer coatings exhibit a dense structure, with distinct composition and phase characteristics in the CrNx and CrAlN layers. The multilayer coating with a modulation period of 200 nm shows the best comprehensive mechanical properties, including high hardness, strong bonding force, good crack propagation resistance, minimal residual stress, and superior erosion resistance. The fracture failure of the coating is mainly attributed to the ductile-brittle transition in the CrNx ductile layer, which eventually leads to brittle fracture and layered peeling failure.
Article
Pediatrics
Ming-Xia Liu, Hai-Feng Li, Mei-Qin Wu, Shan-Shan Geng, Li Ke, Bi-Wen Lou, Wenchong Du, Jing Hua
Summary: This study compared the motor development and suspected developmental coordination disorder (DCD) of children born at different gestational ages in China with their full-term peers. The results showed that very and moderately preterm children had lower motor performance and balance at ages 3-6 compared to their full-term peers. They also had a higher risk of suspected DCD. Late preterm and early-term children did not show any significant difference in motor performance. Early detection and intervention are important for these preterm children.
WORLD JOURNAL OF PEDIATRICS
(2023)
Article
Geosciences, Multidisciplinary
Youcun Liu, Haohong Huang, Lihong Meng, Mingxia Liu, Zidan Wu, Tao Liu, David Labat
Summary: Based on the analysis of the MODIS NDVI and DEM data for the upper reaches of the Ganjiang River Basin in China from 2000 to 2020, this study examined the temporal and spatial evolution of vegetation coverage and its relationship with terrain factors. The results showed that the highest vegetation coverage was found at an elevation of 750-1,000 meters, with an average of 83.54%. Vegetation coverage also increased with higher elevation and slope. Human activities mainly affected areas at low elevation and small slopes where cities and towns are located.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Health Care Sciences & Services
Chengcheng Wang, Limei Zhang, Jinshan Zhang, Lishan Qiao, Mingxia Liu
Summary: In this study, a multiview functional brain network fusion strategy through joint embedding was proposed for fMRI-based ASD identification. The experimental results showed that the proposed method outperformed other methods in automated ASD diagnosis and discovered potential biomarkers for ASD diagnosis.
JOURNAL OF PERSONALIZED MEDICINE
(2023)
Article
Neurosciences
Yuqi Fang, Guy G. Potter, Di Wu, Hongtu Zhu, Mingxia Liu
Summary: In this article, a dual-expert fMRI harmonization (DFH) framework is proposed for automated MDD diagnosis. The framework can utilize data from a labeled source domain/site and two unlabeled target domains to reduce data distribution differences. Experimental results demonstrate the superiority of our method in identifying MDD and suggest potential biomarkers for fMRI-related MDD diagnosis.
HUMAN BRAIN MAPPING
(2023)
Article
Neurosciences
Mingxia Liu, Mo Li, Jing He, Yi He, Jian Yang, Zuoli Sun
Summary: This study investigated the levels of chiral amino acids in the peripheral serum of Alzheimer's disease (AD) patients and found that D-proline, D-aspartate, and D-phenylalanine were altered in AD patients, which may serve as novel biomarkers for AD. Additionally, the level of D-aspartate was associated with the severity of AD.
JOURNAL OF ALZHEIMERS DISEASE
(2023)
Article
Materials Science, Multidisciplinary
Qiaomei Luo, Lan Sun, Yiwei Zhao, Chen Wang, Hongqiang Xin, Danyang Li, Fei Ma
Summary: In this study, a hollow NiCoP/MoS2-V heterostructure with 63.2% 1T-MoS2 was synthesized by a simple solvothermal method. The heterostructure showed abundant catalytic active sites, improved mass transfer properties, and optimized electronic states. The low energy difference between 2H and 1T phases and near zero free energy of hydrogen adsorption resulted in enhanced kinetics and excellent catalytic performances. Specifically, the NiCoP/MoS2-V composite exhibited low overpotential (74.6 mV at 10 mA cm-2) and superior stability in alkaline electrolytes, opening up new possibilities for developing high-activity electrocatalysts.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Danyang Li, Qiaomei Luo, Hongqiang Xin, Chen Wang, Yiwei Zhao, Huizhong Bai, Fei Ma
Summary: A controllable fabrication method for heterogeneous catalysts has been developed, where renewable particles are generated on graphitized wood-derived carbon frameworks and molybdenum disulfide nanoflakes are anchored on CNTs. The resulting hybrid electrode exhibits superior performance for the hydrogen evolution reaction, with low overpotential and high stability.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Public, Environmental & Occupational Health
Tingting Wang, Qi Gao, Yuanyuan Yao, Ge Luo, Tao Lv, Guangxin Xu, Mingxia Liu, Jingpin Xu, Xuejie Li, Dawei Sun, Zhenzhen Cheng, Ying Wang, Chaomin Wu, Ruiyu Wang, Jingcheng Zou, Min Yan
Summary: Using Mendelian randomization, this study found that obesity may cause iron deficiency anemia.
FRONTIERS IN PUBLIC HEALTH
(2023)
Article
Engineering, Aerospace
Jintao Chen, Mingxia Liu, Yuxiang Zhu, Kairu Jin, Zhenyu Tian, Lijun Yang, Chong -Wen Zhou
Summary: The chemical kinetics of hydrogen atom (H-atom) abstraction reactions from nor-bornadiene (NBD) by five radicals (H, O(3P), OH, CH3, and HO2), and the unimolecular reac-tions of three NBD derived radicals, were studied through high-level ab-initio calculations. The results show that the H-atom abstraction reactions from the a-carbon atom of NBD are the most critical channels at low temperatures. Total rate constants for H-atom abstraction reactions by OH radical are also the fastest among all of the reaction channels investigated at the temperature range from 298.15 to 2000 K.
PROPULSION AND POWER RESEARCH
(2023)
Review
Biochemistry & Molecular Biology
Zhaoping Pan, Yuxi Zhao, Xiaoyun Wang, Xin Xie, Mingxia Liu, Kaiyao Zhang, Lian Wang, Ding Bai, Leonard J. Foster, Rui Shu, Gu He
Summary: Bromodomain (BD) is a conserved protein module found in 46 different BD-containing proteins (BCPs), which plays an important role in transcriptional regulation, chromatin remodeling, DNA damage repair, and cell proliferation. BCPs have been shown to be involved in the pathogenesis of various diseases, and researchers have developed inhibitors and degraders of BCPs to interfere with pathogenic gene transcription. This paper provides a comprehensive review of recent advances in the study of drugs that inhibit or down-regulate BCPs.
MOLECULAR BIOMEDICINE
(2023)
Article
Chemistry, Physical
Chen Wang, Chaofan Zeng, Haiyue Ning, Fengnan Li, Mingxia Liu, Kewei Xu, Fei Ma
Summary: Pulsed laser deposition and two-step thermal annealing are used to fabricate passivation layers on a-IGZO TFTs. The influences of the passivation layers on electrical properties are investigated. The combination of HC-PLD and oxygen plasma is employed to solve the oxygen deficiency in certain thin films. Furthermore, two-step annealing enhances the carrier mobility and improves the on-off performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Anesthesiology
Yue Ming, Fengjiang Zhang, Yuanyuan Yao, Zhenzhen Cheng, Lina Yu, Dawei Sun, Kai Sun, Yang Yu, Mingxia Liu, Longfei Ma, Yuxin HuangYang, Min Yan
Summary: The study aimed to investigate whether large volume acute normovolemic hemodilution (L-ANH) can reduce perioperative allogeneic blood transfusion in patients undergoing cardiac surgery with cardiopulmonary bypass (CPB) compared to moderate acute normovolemic hemodilution (M-ANH). The results showed that L-ANH was associated with a lower incidence of perioperative red blood cell transfusion and postoperative excessive bleeding compared to M-ANH.
JOURNAL OF CLINICAL ANESTHESIA
(2023)
Article
Materials Science, Multidisciplinary
Yiwei Zhao, Jin Cao, Zeying Zhang, Si Li, Yan Li, Fei Ma, Shengyuan A. Yang
Summary: Recent experiments have shown interesting physics in a two-dimensional composition-tunable material Nb2n+1SinTe4n+2. These materials offer a good platform for studying the Berry curvature dipole (BCD) and nonlinear Hall effect due to their low symmetry, metallic nature, tunable composition, and ambient stability. Using first-principles calculations, it is found that the BCD exhibits pronounced peaks in monolayer Nb3SiTe6 and decreases with increasing n, eventually vanishing in the limit of n -> infinity. The resulting nonlinear Hall response from the BCD is discussed.