Article
Materials Science, Multidisciplinary
Somyeong Shin, Seonyeong Kim, Hyeon-Kyo Song, Hansung Kim, Taekwang Kim, Hyewon Du, Dain Kang, Jun Yeon Hwang, Yun Sung Woo, Sunae Seo
Summary: A highly stable MoO3-doped graphene obtained through self-passivation exhibited improved electrical properties after annealing at 400 degrees C under a hydrogen atmosphere. The MoOx obtained mainly consisted of crystalline MoO3 and coexisting Mo4O11 and MoO2, which allowed the graphene to maintain stable electrical performance even after exposure to air and chemical immersion. This simple method of obtaining highly stable MoOx-doped graphene is expected to facilitate the fabrication and enhance the performance reliability of various graphene-based electronic devices.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
J. Zeng, C. B. Nie, H. D. Zhang, P. P. Hu, K. Maaz, L. J. Xu, P. F. Zhai, X. R. Yang, S. X. Zhang, J. Liu
Summary: This work explores the irradiation effects of MoS2/Graphene heterostructure field effect transistors induced by swift heavy ions. It was found that graphene experienced damage and MoS2 exhibited changes in photoluminescence after irradiation. Latent tracks were observed on the surface of MoS2. The performance of the devices, including decreased resistance, increased carrier mobilities, increased photocurrent, and responsivity, showed variations under irradiation.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Analytical
Meiling Cheng, Menglin Huang, Hanmei Deng, Hongling Li, Ruo Yuan, Shaping Wei
Summary: In this study, a novel photoactive material, cysteine-induced BiOBr (cys-BiOBr), was prepared to construct a highly efficient photochemical (PEC) biosensor for ultrasensitive detection of microRNA-155 (miRNA-155). The photoelectric efficiency of cys-BiOBr showed a 6-fold increase compared to individual BiOBr due to the doping of S, which narrowed the band gap, enhanced light absorption and carrier separation, and increased the surface oxygen vacancy concentration to prevent recombination of electron-hole pairs. A few miRNA-155 molecules were amplified through an exponential amplification reaction (EXPAR) to form abundant steady G-quadruplexes, which immobilized hemin and catalyzed H2O2 decomposition to significantly amplify the photocurrent signal. The proposed PEC biosensor exhibited a wide detection range from 0.5 fM to 1 nM with a detection limit of 0.13 fM, providing a new method for sensitive detection of biomolecules and showing great potential in early clinical diagnosis.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Physical
Tianpei Ge, Zhaobo Wei, Xiaoli Zheng, Pengfei Yan, Qun Xu
Summary: This study investigates the amorphization kinetics of MoO3-x nanomaterials in supercritical carbon dioxide (SC CO2) and identifies two different amorphization mechanisms depending on pressure. It is also demonstrated that amorphization directly affects the optical performance of nanosheets.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Qiankun Huang, Qingyou Liu, Xiao Li, Ruijin Hong, Chunxian Tao, Qi Wang, Hui Lin, Zhaoxia Han, Dawei Zhang
Summary: In this study, MoO3_x films were prepared by magnetron sputtering and thermal treatment. Analysis of annealed samples showed that thermal treatment enhances localized surface plasmon resonance and Raman scattering intensity, improves the uniformity and stability of Raman signals, and reduces the detection limit for dye methylene blue.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Hai Hu, Na Chen, Hanchao Teng, Renwen Yu, Yunpeng Qu, Jianzhe Sun, Mengfei Xue, Debo Hu, Bin Wu, Chi Li, Jianing Chen, Mengkun Liu, Zhipei Sun, Yunqi Liu, Peining Li, Shanhui Fan, F. Javier Garcia de Abajo, Qing Dai
Summary: In this study, we report a topological transition in the isofrequency dispersion contours of hybrid polaritons supported by a two-dimensional heterostructure consisting of graphene and alpha-phase molybdenum trioxide. By chemically changing the doping level of graphene, we observed a transformation of the topology of polariton isofrequency surfaces. Moreover, when the substrate was changed, the dispersion contour became dominated by flat profiles at the topological transition, thus supporting tunable diffractionless polariton propagation.
NATURE NANOTECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Qi Chu, Jingmeng Li, Sila Jin, Shuang Guo, Eungyeong Park, Jiku Wang, Lei Chen, Young Mee Jung
Summary: In this study, an Ag/MoO3 composite system was cosputtered onto a polystyrene colloidal microsphere array using Ar plasma bombardment, resulting in MoO3 with abundant oxygen vacancy defects. By using 4-aminothiophenol as a probe molecule, the contribution of oxygen vacancy defects to the system was evaluated, showing that they provide a channel for charge transfer. The presence of oxygen vacancy defects influences the SERS spectra, demonstrating their powerful effect on the system.
Article
Engineering, Environmental
Kakali Maiti, Nam Hoon Kim, Joong Hee Lee
Summary: This study focused on the synthesis of a Fe2O3-MoO3/NG core-shell catalyst for oxygen reduction reaction in fuel cells, which demonstrated excellent catalytic activity and long-term durability, as well as better methanol tolerance. The unique synergistic interactions of bimetallic Fe2O3-MoO3 and nitrogen-doped graphene support contribute to enhancing catalytic activity. The Fe2O3-MoO3/NG core-shell structure shows high potential to be an efficient non-precious electrocatalyst with promising applications in electrochemical energy conversion and storage.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Physics, Multidisciplinary
Xueying Zuo, Jingjing Cheng, Yulin Liang, Fuming Xu, Yanxia Xing
Summary: Using the nonequilibrium Green's function combined with the density functional theory, this study investigates the spin-resolved photoelectric current in ferromagnetic hydrogenated zigzag graphene nanoribbons with boron or phosphorus atom substitutions (B/P-ZGNRs). The findings show that B/P substitution induces half-metallic or semiconducting characteristics, depending on the edge form and substituted atoms. The results suggest potential applications of B/P-ZGNRs in spintronic devices and micro photoelectric detection.
NEW JOURNAL OF PHYSICS
(2023)
Article
Chemistry, Physical
Yi Wang, Yawei Yu, Zeyu Liu, Handan Qiao, Zheng Zhang, Takahiro Ishizaki, Xiulan Hu
Summary: The development of lithium-oxygen battery is crucial for mitigating energy crisis, conserving energy, and protecting the environment. This study proposes a novel and effective method to introduce more oxygen vacancies into MoO3, enhancing its electrocatalytic performance and ultimately improving the performance of lithium-oxygen batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Partha Bairi, Ayumi Furuse, Kazunori Fujisawa, Takuya Hayashi, Katsumi Kaneko
Summary: The nanoporosity of graphene oxide (GO) is sensitive to low-temperature heating, emphasizing the importance of carefully processing GO and GO-based materials for superior functions. Optimum pretreatment conditions, such as pre-evacuation temperature and time, are crucial for accurate pore structure information during gas adsorption in GO. Results suggest that specific pre-evacuation temperature and time (approximately 333-353 K and 4 h, respectively) are necessary to avoid irreversible changes in nanoporosity. Additionally, significant structural changes were observed in GO above the pre-evacuation temperature, indicating the importance of standard pretreatment for understanding intrinsic interface properties of GO.
Article
Chemistry, Physical
Dipayan Roy, Bikram Kumar Das, S. Najes Riaz, Dimitra Das, Sourav Sarkar, Kalyan Kumar Chattopadhyay
Summary: This study demonstrates the highly efficient catalysis of MoS2-MoO3 based on vacancy-induced band alignment. The oxygen vacancy reduces the work function, band gap, and d-band center of MoS2-MoO3, stabilizing the antibonding state and accelerating the hydrogen evolution reaction with para-nitrophenol reduction. The Mo5+/6+ site acts as a bifunctional center for alkaline hydrogen evolution and para-nitrophenol reduction, while the acidic hydrogen evolution reaction occurs through spillover of exothermically adsorbed H* from MoO3 to MoS2.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Francesco Paparoni, Yimin Mijiti, Shafaq Kazim, Marco Minicucci, Nicola Pinto, Alessandro D'Elia, Salvatore Macis, Changyoung Kim, Soonsang Huh, Roberto Gunnella, Augusto Marcelli, Andrea DiCicco, Seyed Javad Rezvani
Summary: This study systematically investigates the phase evolution and ionic redistribution in amorphous MoO3 films on metallic Al and Cu substrates after distinct thermal treatments. The results show that the metallic interface significantly modifies the structure and formation of oxygen vacancies in the MoO3 films, and the oxygen vacancy density can be tuned by the choice of metal and treatment parameters.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Zhou Zhou, Renkang Song, Junbo Xu, Xiang Ni, Zijia Dang, Zhichen Zhao, Jiamin Quan, Siyu Dong, Weida Hu, Di Huang, Ke Chen, Zhanshan Wang, Xinbin Cheng, Markus B. Raschke, Andrea Alu, Tao Jiang
Summary: By studying single-layer and twisted bilayer alpha-MoO3/graphene heterostructures, we demonstrate active modulation of the optical response function through IR nanospectroscopic imaging. Our results reveal that graphene doping leads to an increase in the wavelength of phonon polaritons, while the changes in amplitude and dissipation rate differ from the initial expectations. These variations can be attributed to the intricate interplay of gate-dependent components of the phonon polariton complex momentum.
Article
Multidisciplinary Sciences
Francesco L. Ruta, Brian S. Y. Kim, Zhiyuan Sun, Daniel J. Rizzo, Alexander S. McLeod, Anjaly Rajendran, Song Liu, Andrew J. Millis, James C. Hone, D. N. Basov
Summary: The authors demonstrate a topological transition of polariton wavefront induced by plasmon-phonon hybridization in graphene/alpha-MoO3 heterostructures, which offers the possibility to explore the topological properties of hyperbolic phonon polaritons. The transition can be achieved by tuning the hybrid modes from surface waves to bulk waveguide modes.
NATURE COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Mengmeng Yang, Wei Gao, Qiqi Song, Yuchen Zhou, Le Huang, Zhaoqiang Zheng, Yu Zhao, Jiandong Yao, Jingbo Li
Summary: In this study, a simple and universal structure was designed and engineered for the fabrication of highly sensitive photodetectors. By etching a SiO2 window to provide a suspended alpha-In2Se3 channel and introducing local strain and intramolecular type-II alignment, the interface charge transfer was optimized, enhancing the photodetection performance.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Kaixiang Shu, Nan Wang, Nengjie Huo, Fengshuo Wan, Jingbo Li, Chunlai Xue
Summary: This study reports the observation of large negative magnetoresistance in GeSn strips, which is sensitive to the orientation of the magnetic and electric field. The negative magnetoresistance only emerges when the applied magnetic field is parallel to the electric field, consistent with the chiral anomaly in topological semimetals. This work opens up a new way to explore the negative magnetoresistance behavior and underlying mechanism in a new class of Dirac semimetals.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Shuai Liu, Yujia Chen, Shengxue Yang, Chengbao Jiang
Summary: The study demonstrates the high-performance FET based on SnSe, showing excellent electrical properties with a high on/off ratio and carrier mobility.
Article
Chemistry, Multidisciplinary
Ling Li, Jianyu Zhang, Chenyi Yang, Le Huang, Jun Zhang, Jie Bai, Carl Redshaw, Xing Feng, Changyong Cao, Nengjie Huo, Jingbo Li, Ben Zhong Tang
Summary: The novel ferrocene-based organic molecule crystal Fc-Cz, as a strain sensor material, exhibits advantages such as fast response, high sensitivity, and versatility. Analysis based on density functional theory shows that external pressure can change the polarity and enhance the dielectric constant of crystal Fc-Cz.
Article
Chemistry, Multidisciplinary
Tianle Zhang, Yujun Zhang, Mingyuan Huang, Bo Li, Yinghui Sun, Zhe Qu, Xidong Duan, Chengbao Jiang, Shengxue Yang
Summary: In this study, the exchange bias effect in Fe3GeTe2 (FGT)/CrOCl heterostructures is investigated through anomalous Hall effect (AHE) and reflective magnetic circular dichroism (RMCD) measurements. The exchange bias field (H-EB) is successfully tuned by changing the FGT/CrOCl thickness and the cooling field. A larger H-EB in RMCD measurements is observed, which is proposed to be related to the distribution of uncompensated spins at the interface.
Article
Physics, Multidisciplinary
Srivatsan Chakram, Kevin He, Akash Dixit, Andrew E. Oriani, Ravi K. Naik, Nelson Leung, Hyeokshin Kwon, Wen-Long Ma, Liang Jiang, David Schuster
Summary: Interactions play a crucial role in generating correlated quantum many-body states and are important for various physics phenomena. A new scheme has been implemented to create high-order interactions between photons stored in multiple electromagnetic modes of a microwave cavity. This method allows for the preparation of single-mode Fock states and multimode W states.
Article
Physics, Applied
Shasha Li, Yong Yan, Jie Li, Mengdan Qian, Chenhai Shen, Xiaohui Song, Yurong Jiang, Congxin Xia, Jingbo Li
Summary: In this study, a new type of SWIR photodetector based on In2(1-x)Sb2xSe3 material was designed and prepared, and it showed excellent photoresponse performance, indicating its potential as an important material for SWIR photodetectors.
APPLIED PHYSICS LETTERS
(2022)
Article
Physics, Applied
Jina Wang, Hanyu Wang, Quan Chen, Ligan Qi, Zhaoqiang Zheng, Nengjie Huo, Wei Gao, Xiaozhou Wang, Jingbo Li
Summary: The van der Waals heterojunction based on 2D Weyl semimetals shows promise in improving photon detection and response speed, and can be widely used in various systems.
APPLIED PHYSICS LETTERS
(2022)
Article
Physics, Applied
Yong Yan, Jie Li, Hengyi Li, Shasha Li, Zhongwei Li, Wei Gao, Yurong Jiang, Xiaohui Song, Congxin Xia, Jingbo Li
Summary: In this study, a high-performance self-powered broadband photodetector was fabricated based on a near-broken-gap GeSe/SnS2/InSe heterostructure. The device exhibited ultrahigh open-circuit voltage, high power-dependent responsivity, and fast response time in the self-powered mode. By utilizing the near-broken band alignment and the high electron mobility of InSe layer, the conversion efficiency of the device was improved. The unipolar hole barrier at the interface also inhibited the Langevin recombination, leading to the enhancement of open-circuit voltage. This work provides an opportunity for the realization of high-sensitivity polarization-sensitive broadband photodetectors.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Tianle Zhang, Jiantao Du, Wenjun Wang, Keming Wu, Shuai Yue, Xinfeng Liu, Wanfu Shen, Chunguang Hu, Minghui Wu, Zhe Qu, Shengxue Yang, Chengbao Jiang
Summary: In this work, the strong in-plane optical anisotropy in two-dimensional vdW antiferromagnet VOCl was systematically studied. The optical brightness, absorption coefficient, and Raman intensity exhibit evident periodic variations with the change of incident polarization, demonstrating the strong in-plane anisotropic optical absorption and phonon properties. In addition, in-situ visualization of in-plane optical reflection anisotropy and the presence of strong in-plane nonlinear optical anisotropy were also observed. These findings will benefit the applications of VOCl in the fields of polarization-dependent electronics and spintronics.
Article
Materials Science, Multidisciplinary
Shuai Liu, Xuwei Cui, Qinghua Zhang, Wanfu Shen, JianTao Du, Ting Lin, Yunkun Wang, Minghui Wu, Lin Gu, Yunan Gao, Chunguang Hu, Luqi Liu, Shengxue Yang, Chengbao Jiang
Summary: This study reports on an interesting low-symmetry 2D material, GaPS4, and investigates its in-plane anisotropic structure, optical, and mechanical properties. The experimental results show that GaPS4 is sensitive to crystalline orientation and linear dichroism. An interesting pressurized bubble method is used to verify the anisotropic mechanical properties of GaPS4, and saddle-like bubble devices of GaPS4 are successfully fabricated.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Optics
Wen -Long Ma, Shu-Shen Li, Ren-Bao Liu
Summary: This paper investigates the relationship between projective measurements and generalized quantum measurements, and provides a proof that projective measurements can be constructed from sequential generalized measurements under certain conditions. The paper also proposes a specific scheme for constructing projective measurements of a quantum system using sequential generalized measurements, and shows that a single ancilla qubit is sufficient for mediating sequential generalized measurements to construct arbitrary projective measurements.
Article
Physics, Multidisciplinary
Wen-Long Ma, Shu-Shen Li, Liang Jiang
Summary: This research reveals the algebraic structure of path-independent quantum control and provides an exact and unified condition for combating ancilla noise.
PHYSICAL REVIEW RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Yang Liu, Jia-Xin Xiong, Zhi Wang, Wen-Long Ma, Shan Guan, Jun-Wei Luo, Shu-Shen Li
Summary: Fast spin control in germanium hole-spin qubits is achieved through electric dipole spin resonance (EDSR) by utilizing the finite k-linear Rashba SOC of 2D holes, which compensates for the lack of Dresselhaus SOC in centrosymmetric germanium materials.
Article
Materials Science, Multidisciplinary
Ruixue Bai, Tao Xiong, Jinshu Zhou, Yue-Yang Liu, Wanfu Shen, Chunguang Hu, Faguang Yan, Kaiyou Wang, Dahai Wei, Jingbo Li, Juehan Yang, Zhongming Wei
Summary: This article introduces photodetectors based on quasi-1D ZrGeTe4 nanoribbons, featuring low dark current and wideband polarization detection. These photodetectors can operate without bias voltage and demonstrate polarization sensitivity from VIS to NIR regions.
