A5074346931- 2D Materials and Applications
- Graphene research and applications
- MXene and MAX Phase Materials
- Perovskite Materials and Applications
- Plasmonic and Surface Plasmon Research
- Optical Polarization and Ellipsometry
- Optical Coherence Tomography Applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Advanced Thermoelectric Materials and Devices
- Advanced Semiconductor Detectors and Materials
- Optical and Acousto-Optic Technologies
- Advanced biosensing and bioanalysis techniques
- Optical Coatings and Gratings
- Image Enhancement Techniques
- Photoacoustic and Ultrasonic Imaging
- Thermal properties of materials
- Nanoporous metals and alloys
- Advanced Memory and Neural Computing
- Transition Metal Oxide Nanomaterials
- Topological Materials and Phenomena
- Anodic Oxide Films and Nanostructures
- Random lasers and scattering media
- Quantum Dots Synthesis And Properties
- Remote-Sensing Image Classification
- Urban Heat Island Mitigation
National University of Defense Technology
2019-2024
Xi'an Jiaotong University
2020-2024
Xi’an University of Posts and Telecommunications
2021
Xiamen University of Technology
2019
Nanchang University
2019
Bi2 O2 Se is emerging as a photosensitive functional material for optoelectronics, and its photodetection mechanism mostly considered to be photoconductive regime in previous reports. Here, the bolometric effect discovered photodetectors. The coexistence of generally observed multiwavelength photoresponse measurements then confirmed with microscale local heating experiments. unique photodetectors may arise from change hot electrons during temperature rises instead photoexcited holes...
Abstract 2D materials with low‐symmetry exhibit anisotropic physical properties, making them promising candidates for various applications. However, the lack of matured synthesis methods in is still main obstacle to their future Given mature method transition metal dichalcogenides (TMDCs), manipulating anisotropy TMDCs becomes a way tune or trigger functional properties. Herein, first time, van der Waals symmetry engineering reported introduce in‐plane polarization MoS 2 through contact...
Active-polarization imaging holds significant promise for achieving clear underwater vision. However, only static targets were considered in previous studies, and a background region was required image restoration. To address these issues, this study proposes an dynamic polarization method based on pyramid decomposition reconstruction. During the process, polarized is downsampled to generate pyramid. Subsequently, spatial distribution of characteristics backscattered light reconstructed by...
Abstract The near-infrared (NIR) photoelectric properties of multilayer Bi 2 O Se nanofilms were systematically studied in this paper. Multilayer demonstrate a sensitive photo response to NIR, including high photoresponsivity (~ 101 A/W), quick time 30 ms), external quantum efficiency 20,300%), and detection rate (1.9 × 10 Jones). These results show that the device based on might have great potentials for future applications ultrafast, highly NIR optoelectronic devices.
The atomic substitution in two-dimensional (2D) materials is propitious to achieving compositionally engineered semiconductor heterostructures. However, elucidating the mechanism and developing methods synthesize 2D heterostructures with atomic-scale precision are crucial. Here, we demonstrate synthesis of monolayer WSe2–WS2 a relatively sharp interface from WSe2 using chalcogen atom-exchange route at high temperatures for short periods. was initiated edges lateral diffuse along...
Spectral–polarization imaging technology plays a crucial role in remote sensing detection, enhancing target identification and tracking capabilities by capturing both spectral polarization information reflected from object surfaces. However, the acquisition of multi-dimensional data often leads to extensive datasets that necessitate comprehensive analysis, thereby impeding convenience efficiency detection. To address this challenge, we propose fusion algorithm based on spectral–polarization...
Abstract Driven by the unique linear dichroism feature of anisotropic two‐dimensional (2D) materials, much attempt has been made to introduce artificial anisotropy into isotropic 2D materials deliver polarization‐sensitive performance. However, those methods have not widely promoted because technical limitations. This paper reports on successful modulation structural symmetry WSe 2 through van der Waals (vdW) interlayer coupling. Correspondingly, both polarized Raman and photoluminescence...
Violet phosphorus (VP), a novel two-dimensional (2D) nanomaterial, boasts structural anisotropy, tunable optical bandgap, and superior thermal stability compared with its allotropes. Its multifunctionality has sparked widespread interest in the community. Yet, VP's air susceptibility impedes both probing intrinsic features device integration, thus making it of urgent significance to unveil degradation mechanism. Herein, we conduct comprehensive study photoactivated effects on VP. A nitrogen...
This paper presents a modified Bidirectional Reflectance Distribution Function (BRDF) model based on the Cauchy–Lorentz distribution that accurately characterizes reflected energy of typical materials, such as metals and coatings in hemispherical space. The proposed overcomes problem large errors classical models when detecting angles far away from specular reflection angle by dividing light into reflection, directional diffuse ideal components. newly added component is represented...
Monolayer graphene has high symmetrical crystal structure and exhibits in-plane isotropic physical properties. However, twisted bilayer (tBLG) is expected to differ physically, due the broken symmetry introduced by interlayer coupling between adjacent layers. This breaking usually accompanied anisotropy in their electrical, optical thermal existence of tBLG remained evasive until now. Here, an unambiguous identification established angle-resolved polarized Raman spectroscopy. It was found...
Palladium diselenide (PdSe2) has been discovered as an intriguing two-dimensional (2D) semiconductor for its unique pentagonal crystalline structure, electrical and optical anisotropy, thickness-modulated band gap, robust air stability, high carrier mobility, demonstrating great potential in field-effect transistors (FETs), photodetectors, thermoelectric devices. Controlling the polarity contact Schottky barriers is of significance realizing high-performance PdSe2 optoelectronic Here, by...
Abstract Within angle‐resolved polarized Raman spectroscopy (ARPRS) experiments, ensuring accurate configurations is crucial for obtaining reliable results, especially when dealing with anisotropic materials like CrOCl crystal structure and phonon properties. However, comprehensive understanding of phase‐dependent ARPRS the calibration phase angle on modes from a crystallographic perspective are still lacking. Herein, detailed investigation looked into photo‐phonon interaction in through...
This work reports the interlayer difference of exciton and phonon performance between top bottom layer a bilayer-stacked two-dimensional materials structure (BSS). Through photoluminescence (PL) Raman spectroscopy, we find that, compared to that layer, BSS demonstrates PL redshift, E 2 g 1 mode lower intensity. Spatial inhomogeneity are also observed in BSS. Based on theoretical analysis, these exotic effects can be attributed substrate-coupling-induced strain doping. Our findings provide...
The optical path difference (OPD) equations of the dual Wollaston prisms (DWP) with an adjustable air gap (AG) are derived by wave normal tracing method, which is suitable for arbitrary incidence plane and angle. spatial distribution OPD various AG presented. validity equation verified comparing calculated interferograms experimentally observed one. performance a novel static birefringent Fourier transform imaging spectrometer (SBFTIS) based on DWP investigated. spectral resolution can be...
A novel channel-modulated static birefringent Fourier transform imaging spectropolarimeter (CSBFTIS) is introduced, which based on a double Wollaston prism (DWP). With an adjustable air gap (AG), the spectral resolution can be adjusted by changing AG. The CSBFTIS combines and slit-free spectrometer technology with resolution. device compact robust, wide range large luminous flux. Compared various previous spectropolarimeters, it greatly reduce size of image data to adapt different...
Memristors have attracted considerable attention in the past decade, holding great promise for future neuromorphic computing. However, intrinsic poor stability and large device variability remain key limitations practical application. Here, we report a simple method to directly visualize origin of stability. By mechanically removing top electrodes memristors operated at different states (such as SET or RESET), memristive layer could be exposed characterized through conductive atomic force...
The twist-angle dependence of exciton absorption in a molybdenum disulfide (MoS2)/graphene heterostructure (MGH) is reported. Using photoluminescence (PL) spectroscopy, we found that, as the twist angle increased, MGH demonstrated an enhancement PL intensity and peak position blueshift, indicating that radiative recombination was positively correlated with angle. In addition, optical reflectance measurements were performed order to investigate MGH. It samples dependent at wavelengths 620 670...