A5000550102- Advanced Memory and Neural Computing
- Luminescence Properties of Advanced Materials
- Solid State Laser Technologies
- Ferroelectric and Negative Capacitance Devices
- Glass properties and applications
- Advanced Fiber Laser Technologies
- Neuroscience and Neural Engineering
- Perovskite Materials and Applications
- Biometric Identification and Security
- 2D Materials and Applications
- Microwave Dielectric Ceramics Synthesis
- Photoreceptor and optogenetics research
- Photonic and Optical Devices
- Conducting polymers and applications
- Photonic Crystal and Fiber Optics
- Plasmonic and Surface Plasmon Research
- Mechanical and Optical Resonators
- Colorectal Cancer Treatments and Studies
- Advanced Neural Network Applications
- Face and Expression Recognition
- Medical Image Segmentation Techniques
- Gastric Cancer Management and Outcomes
- Face recognition and analysis
- Image Retrieval and Classification Techniques
- Photorefractive and Nonlinear Optics
Institute of High Energy Physics
2025
Chinese Academy of Sciences
2025
Beijing Institute of Technology
2022-2024
Heilongjiang Academy of Sciences
2018-2024
South China University of Technology
2021-2023
State Key Laboratory of Luminescent Materials and Devices
2021-2022
Manufacturing Institute
2022
Lanzhou University
2020-2022
Lanzhou City University
2020
University of Ottawa
2017
Abstract Artificial synaptic devices are the basic composition units for neuromorphic computing processors that realize massive parallel computing. However, n‐type organic transistors have failed to achieve good performance as an artificial device until now. Here, a vertical three‐terminal synapse (TNOAS) using lithium ion‐based dielectric and donor–acceptor (D–A) conjugated polymer‐naphthalene‐1,4,5,8‐tetracarboxylic‐diimide‐thiophene‐vinyl‐thiophene (NDI‐gTVT) channel is proposed. The...
Neural networks are increasingly used to solve optimization problems in various fields, including operations research, design automation, and gene sequencing. However, these face challenges due the nondeterministic polynomial time (NP)-hard issue, which results exponentially increasing computational complexity as problem size grows. Conventional digital hardware struggles with von Neumann bottleneck, slowdown of Moore's law, arising from heterogeneous system design. Two-dimensional (2D)...
Abstract Organic polymer solid electrolytes show interesting application prospects in resistive switching memories and brain‐inspired computing ionic devices. However, can easily decompose under heat treatment their conductivity vary significantly at different temperatures. Among the reported memristors, most of them lack sufficient reproducibility, endurance, stability, uniformity, inter alia tolerance. Based on a molecular group that is thermally stable over large temperature range...
With the advent of "Big Data Era", rapid growth in different types data makes it urgent to improve storage density and computation speed. Flash memory with a floating gate (FG) structure is attracting attention due its miniaturization, low power consumption, reliable storage, which very effective solving problems large capacity high integration density. Meanwhile, FG charge principle can simulate synaptic plasticity perfectly, helps break traditional von Neumann computing architecture used...
Flash memory, dominating data storage due to its substantial density and cost efficiency, faces limitations such as slow response, high operating voltages, absence of optoelectronic etc., hindering the development sensing-memory-computing capability. Here, we present an ultrathin platinum disulfide (PtS
Abstract Neuromorphic computing systems employing artificial synapses and neurons are expected to overcome the limitations of present von Neumann architecture in terms efficiency bandwidth limits. Traditional neuromorphic devices have used 3D bulk materials, thus, resulting device size is difficult be further scaled down for high density integration, which required highly integrated parallel computing. The emergence two-dimensional (2D) materials offers a promising solution, as evidenced by...
The strong exciton absorption in monolayer transition metal dichalcogenides provides a promising platform for studying polaritons with tunable dispersions, which are crucial controlling polaritonic energy and momentum, but remain underexplored. In this work, MoS$_2$ is coupled Fabry-P\'erot microcavity to form polaritons. Five types of Bravais lattices sub-wavelength periods, based on polymethyl methacrylate (PMMA) nanopillars, intentionally designed. overlap between the periodic PMMA...
KZn 1− x Mn (PO 3 ) phosphors have three phases. Among them, an amorphous phosphor exhibits a wide spectral range of luminescent color tunability and has no TL traps, while the β-KZn strong properties.
Pulsed as well cw laser action has been observed in a new host material for Nd3+ ions, Na+ beta″ alumina. The unusual characteristics of the and its known physical properties are briefly described. Absorption spectra, fluorescence lifetime, laser-pulse shape, peak emission wavelength presented experimental evidence, comparisons made with other materials. Some exciting possibilities integrated-optics applications explored.
Solid polymer electrolyte (SPE) is one of the choices for many ionic devices, including organic transistors, ion batteries, memristors, and more. However, uncontrollable conductive filament formation seriously affects performance device. In this paper, PEDOT:PSS was doped to improve electronic conductivity amorphous poly(vinylpyrrolidone) (PVP), realizing transition filaments growth from cathode anode in atomic switch memristors. Based on difference electron mobility scanning microscope...
In this work, a planar light-controlled artificial synapse having high photosensitivity (I<sub>on</sub>/I<sub>off</sub>> 1000) with photocurrent and low dark current is realized based on ZnO thin film grown by radiofrequency sputtering.
Non-uniformity of switching parameters, e.g., voltage and resistances the high resistance state low state, could obstruct practical application electrochemical metallization cells. Higher voltages are also undesirable in terms power consumption. The non-uniformity is usually related to number conductive filaments (CFs) their degree dissolution during RESET process. CFs can be ideally reduced one by decreasing device area. However, location difficult control. Here, we introduce a SiO2/Ta2O5...
We report a silicate-clad heavily Tm3+-doped germanate core multimaterial fiber that is successfully drawn by using rod-in-tube method. This new has high gain per unit length of 6.11 dB/cm at 1.95 µm, which is, to the best authors' knowledge, highest reported so far for glass fibers. By virtue this high-gain fiber, an all-fiber-integrated passively mode-locked laser with fundamental repetition rate up 4.3 GHz demonstrated. Remarkably, generated pulse operating 1968 nm exhibits...
Abstract Since the first successful exfoliation of graphene, superior physical and chemical properties two-dimensional (2D) materials, such as atomic thickness, strong in-plane bonding energy weak inter-layer van der Waals (vdW) force have attracted wide attention. Meanwhile, there is a surge interest in novel physics which absent bulk materials. Thus, vertical stacking 2D materials could be critical to discover develop optoelectronic applications. Although vdW heterostructures been grown by...
Currently, fingerprint authentication systems in mobile devices, which have limited-size sensors, are mainly based on partial matching algorithms. To cover all areas of the finger, system usually collects multiple partially overlapping fingerprints during enrollment. Existing recognition methods either perform score-level fusion after single-to-single matching, or image-level mosaicking. However, these two-stage risk discarding some real information introducing fake information. In this...
The Judd–Ofelt analysis has been applied to the sigma-polarized absorption spectrum of Nd3+:NaB″alumina determine modified parameters Ωσ,2, Ωσ,4, and Ωσ,6. A model for near-neighbor environment Nd3+ proposed tested using a simplified point charge crystal field. indicates that observed may be explained by large linear field term in induced shift position conduction plane oxygen neodymium ions away from sites inversion symmetry.
High-gain Tm3+/Ho3+ co-doped optical fibers are urgently desired for high-repetition-rate mode-locked fiber lasers at >2 µm. Here, germanate glass with low hydroxyl (OH-) content was prepared by the conventional melt-quenching method combined reaction atmosphere procedure (RAP) dehydration technique. The doping concentrations of Tm2O3 and Ho2O3 2.5 mol.% (7.1 wt.%) 0.25 (0.7 wt.%), respectively. Thanks to high Tm3+ energy transfer efficiency (19.8%) between Ho3+ ions, it enables achieving...
Abstract In recent, neuromorphic computing has been proposed to simulate the human brain system overcome bottlenecks of von Neumann architecture. Memristors, considered emerging memory devices, can be used synapses and neurons, which are key components systems. To observe resistive switching (RS) behavior microscopically probe local conductive filaments (CFs) memristors, atomic force microscopy (CAFM) with ultra-high resolution investigated, could helpful understand dynamic processes...
Nd3+ beta″ alumina is one of a family potentially useful nonlinear-optical materials based on rare-earth ions substituted into host. The saturation intensity has been measured to be in the range 16 35 kW cm−2. Phase conjugation by degenerate four-wave mixing demonstrated, and phase-conjugate reflectivity as function both laser wavelength intensity.
In this work, the spectroscopic properties of 1.0 µm emission in Nd 3+ /Yb co-doped phosphate glasses were systematically investigated under 808 nm excitation. Notably, broadband with a full width at half maximum (FWHM) 96 was obtained glass doped 2 mol.% O 3 and 1 Yb . addition, energy transfer microscopic parameter efficiency analyzed. What is more, multimaterial fibers core silicate cladding successfully drawn by using molten method. An intense amplified spontaneous (ASE) can be realized...
Rare-earth (RE) ions doped laser glass has attracted the interest of many researchers because its numerous potential applications in planar waveguides and fiber lasers. In this work, 2-µm upconversion luminescence properties Ho3+ are simultaneously enhanced through design components used to regulate network structure germanate glass. Furthermore, thermal, structural, spectroscopic Ho3+/Yb3+ co-doped systematically investigated. It is noted that calculated gain coefficient Nb2O5 modified can...
Memristor, fusing the functions of storage and computing within a single device, is one core electronic components to solve bottleneck von Neumann architecture.With unique volatile/non-volatile resistive switching characteristic, memristor can simulate function synapses/neurons in brain well.In addition, due compatibility with traditional complementary metal-oxide-semiconductor (CMOS) processes, metal-oxidebased memristors have received lot attention.In recent years, many kinds metal-oxide...