Article
Chemistry, Physical
Runqiu Wang, Shuai Guo, Zhonglin Li, Dieter Weller, Sufeng Quan, Jing Yu, Mengxuan Wu, Jie Jiang, Yingying Wang, Ruibin Liu
Summary: MoS2 nanoscrolls demonstrate strong anisotropic optical properties, making them a promising candidate for the fabrication of multifunctional devices.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Weiqi Wang, Jiamu Cao, Rongji Zhang, Huaxin Xiu, Yufeng Zhang
Summary: In this study, a MoS2/AuPt/SnO2 nanocomposite device was fabricated by interfacially engineering a MoS2/SnO2 nanostructure using Au and Pt bimetallic nanoparticles. The device exhibited remarkable sensing response, short response time, and excellent baseline recovery to NO2 gas at room temperature, as well as high sensitivity, low detection limit, commendable reversibility, stability, and selectivity against various gases. This work advances the development of room-temperature gas-sensitive nanomaterials and shows promise for applications in ultralow power-integrated sensors.
ACS APPLIED NANO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Xin Tang, Yulin Zheng, Ben Cao, Qing Wu, Jinghan Liang, Wenliang Wang, Guoqiang Li
Summary: By constructing GaN nanowire/Nb-doped MoS2 flake hybrid heterostructures, photodetectors with high responsivity, fast response speed, and a wide spectral response range can be realized.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Kai Lv, Dewen Zheng, Yangyang Shi, Xi Zhang, Feihong Wang, Jianming Li, Shanyu Wang, Binbin Dong, Lu Yuan Hao, Liangjun Yin, Xin Xu, Yuxi Xian, Simeon Agathopoulos
Summary: This study successfully utilized ceramic membrane technology to prepare MoS2-modified TiN electrodes, demonstrating excellent electrocatalytic activity. The vertically grown MoS2 nanoflakes on the TiN surface, forming a dual-pore structure, facilitated electron transfer and enhanced hydrogen evolution reaction efficiency.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Shusen Lin, Rutuja Mandavkar, Rakesh Kulkarni, Shalmali Burse, Md Ahasan Habib, So Hee Kim, Ming-Yu Li, Sundar Kunwar, Jihoon Lee
Summary: This study demonstrates a hybrid UV photodetector that incorporates a blended active layer of molybdenum disulfate (MoS2) nanoflakes and zinc oxide (ZnO) quantum dots (QDs) on Au core-shelled AuPd hybrid NPs (HNPs). The optimized device shows an increased photocurrent and improved performance parameters, making it one of the best ZnO-based photodetectors so far.
ACS APPLIED NANO MATERIALS
(2022)
Article
Environmental Sciences
Ravindranadh Koutavarapu, Won Young Jang, M. C. Rao, Malathi Arumugam, Jaesool Shim
Summary: This study presents a simple in-situ hydrothermal method for producing BiVO4/MoS2 binary nano composites as visible-light-driven catalysts, showing superior antibacterial photocatalytic performance and cycling stability, which can be attributed to their large surface area and tunable bandgap.
Article
Multidisciplinary Sciences
Anh Tuan Nguyen, Youlim Lee, Phuong Quang Hoang Nguyen, Przemyslaw Dera, Sang-Hee Yoon, Woochul Lee
Summary: By investigating the changes in graphite nanoflakes (GnFs) induced by gamma-ray irradiation, it is found that the electrical conductance exponentially increases while the interlayer spacing gradually decreases. Gamma-ray irradiation shows promise in tailoring the electrical properties of GnFs.
SCIENTIFIC REPORTS
(2022)
Article
Materials Science, Multidisciplinary
M. Saad, A. M. Rogov, A. G. Kiiamov, S. Nikitin, D. A. Tayurskii, R. Yusupov
Summary: This paper presents the effects of mild annealing treatments on the structural ordering and open edge morphology of graphite nanoflakes (GNF). The study reveals that the morphology of GNF edges evolves differently under annealing, with the width of the two-dimensional fast-Fourier transform (2D-FFT) maxima changing. The results suggest that annealing in different environments leads to different changes in GNF edges.
Article
Materials Science, Multidisciplinary
Stefanie Dengler, Adrian Azarian, Bernd Eberle
Summary: Spatial self-phase modulation (SSPM) involving the formation of self-diffraction ring patterns by transmitting a laser beam through solutions containing C-60 or C-70 was studied. The pattern consists of concentric rings expanding in time until reaching a maximum, with thermal effects responsible for the observed SSPM. Measurements and simulations were carried out to deepen the understanding of the physical processes involved.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Engineering, Electrical & Electronic
Mahalingam Babu, Sudhakara Reddy Bongu, Pritam P. Shetty, Eswaraiah Varrla, G. Ramachandra Reddy, Jayachandra Bingi
Summary: This study demonstrates various photonic functionalities using the thermally induced nonlinear optical response SSPM method of MoS2 nano bottles, including nonreciprocal light propagation and diode actions.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Engineering, Environmental
Raju Atla, Tae Hwan Oh
Summary: A novel photocatalyst MoS2/ZnWO4 was successfully prepared for efficiently eliminating toxic antibiotics from water bodies, with the optimal MSZW-10 heterostructure displaying superior photocatalytic performance degrading nearly 97.40% of TC within 105 minutes. The enhanced photocatalytic performance of the MoS2/ZnWO4 composite is attributed to improved charge carrier separation, suitable energy level positions, enhanced light absorption ability, and interfacial charge transfer between MoS2 and ZnWO4.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Manuraj Mohan, Nagaraj P. Shetti, Tejraj M. Aminabhavi
Summary: Miniaturization of electronic devices is increasingly common in the modern world. Development of flexible energy storage devices, particularly flexible supercapacitors using MoS2, has gained attention due to their superior performance and potential applications in various technologies. This review discusses recent applications, scope, and the development of MoS2-based flexible supercapacitors in composite forms with other materials, as well as self-standing devices that can generate and store energy.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Enze Wang, Zekun Chen, Run Shi, Zixin Xiong, Zeqin Xin, Bolun Wang, Jing Guo, Ruixuan Peng, Yonghuang Wu, Chenyu Li, Hongtao Ren, Xiaoyan Li, Kai Liu
Summary: In this study, dynamic engineering of buckling deformation in MoS2 thin films was achieved by humidity-tuned interfacial adhesion, allowing the transformation of 1D telephone-cord buckles to 2D web-like buckles. These buckled films have potential applications as patterned templates for liquid condensation and sensing units for tactile sensors.
Article
Chemistry, Multidisciplinary
Xueyu Chen, Ge Ding, Linwei Tang, Haijian Zou, Chaofeng Wang, Shuqing Chen, Chenliang Su, Ying Li
Summary: In this investigation, it was found that low-dimensional materials have feasibility and reliability in the development of optical logic gates. By modulating the spatial self-phase modulation patterns through MoS2 dispersions, using the initial intensity, phase, and topological charge of a Gauss vortex superposition interference beam, we successfully implemented novel optical logic gates, including AND, OR, and NOT gates.
Article
Polymer Science
Ren Liu, Alessio Caciagli, Jiaming Yu, Xiaoying Tang, Rini Ghosh, Erika Eiser
Summary: Nano-sized particles functionalised with short single-stranded (ss)DNAs can act as detectors of complementary DNA strands. The tri-block copolymer-based, self-assembling DNA-coated nanoparticles are easy to make. DNA functionalisation results in inter-micellar attraction and can form transient hydrogels due to the competing self-assembling mechanisms.
Article
Chemistry, Physical
Haihong Zheng, Biao Wu, Shaofei Li, Jun He, Keqiu Chen, Zongwen Liu, Yanping Liu
Summary: The modulation of moire potential and intralayer excitons in WS2/WS2 homostructure is observed in this study. By adjusting the twist angle, the depth of the moire potential can be modulated, and the confinement effect of the moire potential on intralayer excitons is demonstrated. Furthermore, atomic reconstructions are detected using low-frequency Raman mapping to ensure the uniformity of interlayer coupling.
Article
Chemistry, Physical
Biao Wu, Haihong Zheng, Shaofei Li, Chang -Tian Wang, Junnan Ding, Jun He, Zongwen Liu, Jian-Tao Wang, Yanping Liu
Summary: The recent discovery of various moire-related properties in twisted vertical stacking structures has attracted significant attention, particularly in transition metal dichalcogenide heterostructures. This study presents the observation of moire excitons in homostructures with different layer-coupling interactions, and the results show that reducing the number of underlying layers increases the moire potential. The effects of temperature, laser power, and valley polarization on moire excitons were also investigated, providing insights into their spectral features. These findings pave the way for the exploration of quantum phenomena and related applications in quantum information.
Review
Optics
Yiduo Wang, Yingwei Wang, Jun He
Summary: Family of MXenes, the 2D transition metal carbides, nitrides, and carbonitrides, has gained significant attention due to their tunable optical, electronic, electrochemical, and mechanical properties, leading to the emergence of compact nonlinear optical (NLO) devices. MXenes, as a novel 2D materials system, not only possess the advantages of classical 2D materials for NLO applications, but also demonstrate unique superiority such as high yield and scalable synthesis, stability, and switchable NLO response. This article provides a comprehensive overview of MXenes nonlinear optics, covering synthesis, linear and NLO properties, NLO applications, as well as challenges and future prospects of MXenes NLO research.
LASER & PHOTONICS REVIEWS
(2023)
Article
Chemistry, Physical
Li Zhou, Jianlong Kang, Yulan Dong, Yiduo Wang, Yejun Li, Han Huang, Si Xiao, Yingwei Wang, Jun He
Summary: Featured with high thermal decomposition temperature and layered structure, violet phosphorus (VP) has demonstrated high-performance optoelectronic and photonics applications at the nanoscale. In this study, few-layer and nanometer-sized VP with robust stability in different environments were successfully prepared using ultrasound-assisted liquid phase exfoliation. The ultrafast carrier dynamics and third-order nonlinear optical response of VP were investigated for the first time, showing its potential for ultrafast nonlinear photonic applications like saturable absorbers and optical switches.
Article
Chemistry, Multidisciplinary
Dingdong Xie, Ge Gao, Bobo Tian, Zhiwen Shu, Huigao Duan, Wei-Wei Zhao, Jun He, Jie Jiang
Summary: Visual adaptation allows organisms to perceive the external world accurately, even in changing environments. In this study, a novel porous metal-organic-framework phototransistor with anisotropic-ReS2-based heterojunction is demonstrated for polarization-sensitive visual adaptation emulation. The device exhibits intriguing polarized sensitivity and adaptive ability. Through this phototransistor, various polarization-sensitive neuromorphic behaviors are experimentally demonstrated, and advanced polarization-sensitive visual adaptation is successfully achieved with the polarization-electricity cooperation strategy.
ADVANCED MATERIALS
(2023)
Article
Optics
Li Zhou, Yiduo Wang, Yingwei Wang, Jianlong Kang, Wanxin Zheng, Jun He
Summary: This work investigates the nonlinear optical response and carrier dynamics in the visible region of NbSe2. The transient absorption spectra reveal the relaxation process, including electron-phonon scattering and phonon-phonon scattering. These results contribute to a better understanding of light-matter interactions and carrier dynamics in NbSe2 and provide a foundation for its applications in nonlinear photonic and optoelectronic devices.
JOURNAL OF NONLINEAR OPTICAL PHYSICS & MATERIALS
(2023)
Article
Physics, Applied
Mianzeng Zhong, Baocheng Cui, Zhangxun Mo, Yali Yu, Qinglin Xia, Fen Zhang, Ziqi Zhou, Le Huang, Bo Li, Juehan Yang, Jun He, Zhongming Wei
Summary: Controlling the band alignment of heterostructures is important for designing novel physical properties and functional devices. Van der Waals heterostructures have the advantage of overcoming lattice matching limitations, but achieving full control over band alignment is challenging. In this study, black-arsenic (b-As)/WSe2 van der Waals heterostructures with type-I band alignment were realized and the band alignment could be tuned by a gate electric field, resulting in improved photoresponsivity and ultra-fast photoresponse.
APPLIED PHYSICS REVIEWS
(2023)
Article
Chemistry, Multidisciplinary
Fen Zhang, Zhangxun Mo, Baocheng Cui, Shuo Liu, Qinglin Xia, Bo Li, Linwei Li, Zhengwei Zhang, Jun He, Mianzeng Zhong
Summary: Optical devices based on alloying semiconductors, especially nanowires, offer new possibilities for wide-spectrum detection. In this study, (BixIn1-x)(2)S-3 nanowires were designed by controlling the ratio of Bi and In atoms, allowing for optimized optoelectronic device performance. Experimental results showed that Bi1.28In0.72S3 nanowire-based photodetectors exhibited excellent photoresponse performance.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Xiaoming Yuan, Xinhui Yang, Zhiwei Huang, Liqiang Zhang, Xinxin Peng, Haitao Chen, Jun He
Summary: Reducing gap distance to the nanometer range provides a promising platform for exploring light-matter interactions at the nanoscale. The designed nanocavity using BPT and WSe2 as a barrier and Ag nanowire and Au film as a cavity enables local electric field enhancement and strong polarization-dependent Raman scattering. It also exhibits enhanced trion emission intensity and a new low energy emission peak below 173 K, making it an excellent platform to study emission phenomena in transition-metal dichalcogenide and related heterostructures.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Optics
Shuo Liu, Xuejuan Liu, Yan Xiong, Yiping Xu, Shaohua Tao, Wenxing Yang, Shubo Cheng
Summary: This paper generates a type of double helico-conical beam (HCB) by binarizing the modified helico-conical phase (MHCP). The diffraction patterns of the double HCBs and multi-helix beams were analyzed theoretically and experimentally, showing that their relative positions can be adjusted arbitrarily by introducing a blazed grating and the number and relative positions of multi-helix beams can be controlled by the number of superimposed MHCP profiles and the azimuth factor. This arrayed HCB has potential applications in optical manipulation and multiplexed holography.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
(2023)
Article
Optics
Shuo Liu, Xuejuan Liu, Yan Xiong, Yiping Xu, Shaohua Tao, Wenxing Yang, Shubo Cheng
Summary: This paper analyzes the self-healing properties of symmetrical power-exponent-phase vortices (SPEPVs) and verifies the self-healing of obstructed SPEPVs through simulations. The study explores the influence of external factors and internal parameters on the self-healing effect, and discusses the energy flow density, similarity coefficient, effective self-healing distance, and diffraction efficiency of obstructed SPEPVs. The results demonstrate the ability of petal-like SPEPVs to trap microparticles three-dimensionally.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
(2023)
Article
Nanoscience & Nanotechnology
Zhihui Chen, Defeng Xu, Menglong Zhu, Yueting Wang, Junfan Feng, Chuancun Shu, Si Xiao, Jianqiao Meng, Jun He
Summary: Multiphoton fluorescence is widely used in high-resolution imaging, photochemistry, micro- and nano-processing, and clinical diagnosis. In this study, metal-organic frameworks (MOFs) with 7-fold and 8-fold interpenetration were synthesized, and the 8-fold interpenetrated MOFs exhibited unexpectedly giant blue-shifted two-photon-induced fluorescence compared to its intrinsic fluorescence. Density functional theory (DFT) and time-dependent density functional theory (TDDFT) simulations revealed that under two-photon excitation, electrons and holes can be more delocalized, and intermolecular interactions mainly govern the emission process of the 8-fold interpenetrated MOFs.
Article
Materials Science, Multidisciplinary
Zhong-Jian Yang, Xiao-Jing Du, Ma-Long Hu, Jun He
Summary: We propose a magnetic laser in a subwavelength system consisting of a high-refractive-index dielectric cavity and magnetic quantum emitters. The conditions and feasibility of magnetic lasers in realistic systems are analyzed, with numerical results showing the potential in silicon disks with embedded emitters. The competition between electric and magnetic interactions and the enhancement of magnetic light-matter interactions are also investigated in achievable systems.
Article
Chemistry, Multidisciplinary
Yang Gao, Yueqiu Hu, Cheng Ling, Guanghao Rui, Jun He, Bing Gu
Summary: As an allotrope of phosphorus, layered violet phosphorus (VP) is widely used in electronics, photonics, and optoelectronics, but its nonlinear optical properties need further exploration. In this study, VP nanosheets were prepared and characterized, and their spatial self-phase modulation (SSPM) effects were investigated for all-optical switching applications. The SSPM ring forming time and the third-order nonlinear susceptibility of monolayer VP nanosheets were found to be about 0.4 s and 10(-9) esu, respectively. The results demonstrate the potential of two-dimensional nanomaterials for designing and realizing non-degenerate nonlinear photonic devices.
