A5100366054- Advanced Optical Network Technologies
- Optical Network Technologies
- Advanced Photonic Communication Systems
- Perovskite Materials and Applications
- Laser Material Processing Techniques
- Advanced Surface Polishing Techniques
- Photonic and Optical Devices
- Laser-induced spectroscopy and plasma
- Quantum Dots Synthesis And Properties
- Semiconductor Lasers and Optical Devices
- Conducting polymers and applications
- Advanced machining processes and optimization
- Advanced Fiber Optic Sensors
- Diamond and Carbon-based Materials Research
- Ocular and Laser Science Research
- Ga2O3 and related materials
- Chalcogenide Semiconductor Thin Films
- Emotion and Mood Recognition
- Optical measurement and interference techniques
- Laser-Plasma Interactions and Diagnostics
- Photonic Crystal and Fiber Optics
- Advanced optical system design
- Advanced Polymer Synthesis and Characterization
- Data Quality and Management
- Algorithms and Data Compression
Xiamen University
2019-2025
Xiamen University of Technology
2018-2024
BGI Research
2023
China National GeneBank
2023
Inspur (China)
2023
Harbin Institute of Technology
2010-2022
Northwestern Polytechnical University
2021
Beijing Institute of Technology
2020
Nanjing University of Information Science and Technology
2019
Shanghai Jiao Tong University
2003-2009
The organic–inorganic halide perovskite has become one of the most promising candidates for next-generation memory devices, i.e. memristors, with excellent performance and solution-processable preparation. Yet, mechanism resistive switching in perovskite-based memristors remains ambiguous due to a lack situ visualized characterization methods. Here, we directly observe process photoluminescence (PL) imaging microscopy under an external electric field. Furthermore, corresponding element...
Content-based Image Retrieval (CBIR) techniques have been extensively studied with the rapid growth of digital images. Generally, CBIR service is quite expensive in computational and storage resources. Thus, it a good choice to outsource cloud server that equipped enormous However, privacy protection becomes big problem, as cannot be fully trusted. In this paper, we propose an outsourced scheme based on novel bag-of-encrypted-words (BOEW) model. The image encrypted by color value...
Instability caused by the migrating ions is one of major obstacles toward large-scale application metal halide perovskite optoelectronics. Inactivating mobile ions/defects via chemical passivation, e.g., amino acid treatment, a widely accepted approach to solve that problem. To investigate detailed interplay, L-phenylalanine (PAA), typical acid, used modify SnO2/MAPbI3 interface. The champion device with PAA treatment maintains 80% its initial power conversion efficiency (PCE) when stored...
Molecular engineering contributes to a well-aligned stacking of low-dimensional compositions in quasi-two-dimensional perovskite thin-films, resulting high performance and stable-operation photodetectors across the whole visible range.
Abstract Filterless perovskite narrowband photodetectors (PNPDs) are highly demanded in color and spectral discrimination, which typically demonstrated by charge collection narrowing (CCN) effect of single crystals, showing a limited sensing area slow response speed. Here, fast‐response, high‐sensitivity PNPDs using spin‐deposited polycrystalline 2D (poly‐2D) Ruddlesden–Popper (RP) films with thickness ≈3.6 µm. The strong excitonic light absorption diffusion length poly‐2D RP perovskites...
Halide perovskite memristors are rapidly emerging as promising candidates in the fields of neural network construction, logic operation, and biological synaptic simulation. Understanding resistive switching mechanism, yet, is crucial for ensuring stability reproducibility device performance. Here, we prepare quasi-2D perovskites with enhanced performance through optimization molecular, solvents, dimensions. Subsequently, process directly observed by a nondestructive situ photoluminescence...
This paper reported a label free, all-fiber static pressure sensor constructed by cascading two single mode fiber(SMF) - few-mode fiber(FMF) fiber(SFS) critical wavelength structures. Vernier effect was adopted to magnify the sensitivity of interference peaks and superimposed transmission spectrum has an envelope which free range varies with reaches maximum when approaching (CWL <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">E</sub> ). Thus,...
This paper studied the relationship between temperature/strain wavelength sensitivity of a fiber optic in-line Mach-Zehnder interferometer (MZI) sensor and separation measured to critical (CWL) in CWL-existed interference spectrum formed by LP <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">01</sub> xmlns:xlink="http://www.w3.org/1999/xlink">02</sub> modes. The MZI has been constructed splicing section specially designed few-mode (FMF), which...
Last decades have witnessed the rapid development of ultraviolet (UV) photodetectors in diversity applications. The III-nitride semiconductor and metal halide perovskite both performed promising UV-sensing optoelectronic properties. However, they are still suffering from either high temperature epitaxial-growth or low photocurrent generated UV range. In this work, we demonstrate an innovative MAPbCl3/GaN particle hybrid device with all-solution-processed deposition methods. Comparing to...
ABSTRACT Urea–formaldehyde (UF) resin adhesive is one of the most widely applied in wood composite materials. However, it suffers from issues related to low water resistance and elevated levels formaldehyde emission. In this study, polyamide–epichlorohydrin (PAE) was used as a modifier crosslinking agent prepare modified UF adhesives with high strength using molar ratio resin. The interaction between PAE, UF, surface effect PAE on chemical structure, thermal stability, bonding strength,...
The nano-metric cutting process of single-crystal SiO 2 was studied using molecular dynamics simulation, where the effects anisotropy on material removal and surface integrity were analyzed. typical crystal directions different planes selected as directions. results show that chip formation, temperature distribution in machined area, force, phase transformation damage layer thickness vary according to direction. orientation (110) [00−1] exhibits a large range expansion while [1−10] smallest...
Abstract Background With the advancement of whole‐genome sequencing (WGS) technology, massively parallel (MPS) remains mainstream due to its accuracy, low cost, and high throughput. The development analytical pipeline corresponding MPS has always been great importance. Increasingly large population genomics studies, as a specific type big data research, pose new challenges for analysis solutions. Results Here, we introduce ZBOLT, comprehensive system that incorporates both software hardware...
Abstract Because of the different features same facial expressions from angles, most methods are only suitable for face images, and accuracy expression recognition is low. Therefore, a multi‐angle method based on generative adversarial networks (GAN) proposed. Firstly, depth regression network used to detect key points image achieve alignment, so as reduce difficulty feature extraction. Then, input GAN. The generator composed encoder decoder, skip connection designed. In encoding phase, can...
Ion migration can lead to detrimental consequences, including hysteresis effects, interfacial reactions, etc., which degrades the stability and efficiency of perovskite solar cells (PSCs). Ionic liquid has been introduced enhance PSCs, yet detailed mechanism is still under debate. To address question, in situ wide-field photoluminescence microscopy employed characterize ion migration, found more obviously suppressed at buried interface than surface after 1-butyl-3-methylimidazolium...
A new scheme to mitigate the connection setup time and minimize reconfiguration times of optical cross- connects (OXCs) for WDM networks is proposed in tins study. In scheme, we consider information switch fabrics signaling protocol, winch designated as with fabric status (SWFS). Distributed reservation algorithms will reserve wavelength minimum OXCs along route. Simulation results indicate that our schemes have shorter time, lower switching ratio well better blocking performance than those...
Optical freeform surfaces have been widely used in optical systems owing to their design degrees of freedom, which can simplify the structure and improve performance systems. High accuracy testing for surface is needed due improvement machining accuracy. However, it still a challenge achieve high measuring because lack rotational symmetry. In this paper, an off-axis catadioptric partial compensator (OACPC) non-null interferometric method proposed measure surface. The OACPC consists two...