A5035997139- Advanced Fiber Laser Technologies
- Advanced Memory and Neural Computing
- 2D Materials and Applications
- Laser-Matter Interactions and Applications
- Photonic Crystal and Fiber Optics
- Thin-Film Transistor Technologies
- Advanced Fiber Optic Sensors
- Semiconductor materials and devices
- Photonic and Optical Devices
- Graphene research and applications
- ZnO doping and properties
- Nanowire Synthesis and Applications
- Perovskite Materials and Applications
- Solid State Laser Technologies
- Spectroscopy and Laser Applications
- Carbon Nanotubes in Composites
- Ferroelectric and Negative Capacitance Devices
- Mechanical and Optical Resonators
- Advanced Frequency and Time Standards
- MXene and MAX Phase Materials
- Neuroscience and Neural Engineering
- Photoreceptor and optogenetics research
- Advanced Sensor and Energy Harvesting Materials
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
Central South University
2016-2025
China Jiliang University
2023-2024
Wright-Patterson Air Force Base
2022-2024
UES (United States)
2024
IMRA America (United States)
2013-2023
Shenzhen University
2021-2023
United States Air Force Research Laboratory
2023
State Grid Corporation of China (China)
2023
Guangxi University
2022
Southeast University
2007-2021
Hardware implementation of artificial synapses/neurons with 2D solid‐state devices is great significance for nanoscale brain‐like computational systems. Here, MoS 2 synaptic/neuronal transistors are fabricated by using poly(vinyl alcohol) as the laterally coupled, proton‐conducting electrolytes. Fundamental synaptic functions, such an excitatory postsynaptic current, paired‐pulse facilitation, and a dynamic filter information transmission biological synapse, successfully emulated. Most...
We report the extension of broadband degenerate OPO operation further into mid-infrared. A femtosecond thulium fiber laser with output centered at 2050 nm synchronously pumps a 500-μm-long crystal orientation patterned GaAs providing gain 4.1 µm. observe pump threshold 17 mW and bandwidth extending from 2.6 to 6.1 µm -30 dB level. Average power was 37 mW. Appropriate resonator group dispersion is key factor for achieving instantaneously broad bandwidth. The spectrum very sensitive absorption...
A novel photo-electronic hybrid-integrated synaptic device based on a 2D MoS<sub>2</sub> phototransistor gated by the electric-double-layer biopolymer electrolyte (sodium alginate) is proposed.
A fully stabilized all polarization-maintaining Er frequency comb with a nonlinear amplifying loop mirror below 0.2 rad carrierenvelope-offset phase noise is demonstrated.The integrated timing jitter measured as 40 attosecond from 10 kHz to MHz, which the lowest value of any fiber date.
Graphene-based photodetectors have recently received much attention for their potential to detect weak signals and short response time, both of which are crucial in applications such as optical positioning, remote sensing, biomedical imaging. However, existing devices detecting limited by the current photogating mechanism, so price achieving ultrahigh sensitivity is sacrifice time. In this work, we bridge gap between ultrafast employing a graphene/SiO2/lightly doped Si architecture with an...
Abstract Defect‐induced trap states are essential in determining the performance of semiconductor photodetectors. The de‐trap time carriers from a deep can be prolonged by several orders magnitude as compared to shallow traps, resulting additional decay/response device. Here, it is demonstrated that 2D ReS 2 efficiently modulated defect engineering through molecule decoration. traps greatly prolong response mostly filled protoporphyrin molecules. At same time, carrier recombination and...
Pain-perceptual nociceptors (PPN) are essential sensory neurons that recognize harmful stimuli and can empower the human body to react appropriately perceive precisely unusual or dangerous conditions in real world. Furthermore, sensitization-regulated (SRN) greatly assist pain-sensitive reduce pain sensation by normalizing hyperexcitable central neural activity. Therefore, implementation of PPNs SRNs hardware using emerging nanoscale devices improve efficiency bionic medical machines giving...
Abstract Humans can clearly perceive surroundings efficiently while consuming little energy because of human intelligence and powerful vision system. Thus, it has been a long‐sought dream for beings to build such an energy‐efficient artificial intelligent system with emerging devices. Unfortunately, wearable optoelectronic device visual nociceptor systems, regarded as key bionic function protect the vision, remains be developed so far. Herein, using vertical coplanar‐multiterminal flexible...
Abstract Adaptation is the most common and basic feature of living systems, which gives species or individuals a survival advantage. In particular, visual adaptation can enable organisms with clearer understanding real world, thereby avoiding potential harm, vital for life activities organisms. However, current adaptive devices based on logic circuits are still facing great challenges large‐scale integration limited bionic functions. Therefore, hardware impleofmentation biological...
Versatile liquid manipulating surfaces combining patternable and controllable wettability have recently motivated considerable attention owing to their significant advantages in droplet-solid impacting behaviors, microdroplet self-removal, liquid-liquid interface reaction applications. However, developing a facile efficient method fabricate these versatile remains an enormous challenge. In this paper, strategy for the fabrication of with on Polyimide (PI) film based femtosecond laser thermal...
Brain-inspired neuromorphic computing, featured by parallel is considered as one of the most energy-efficient and time-saving architectures for massive data computing. However, photonic synapse, key components, still suffering high power consumption, potentially limiting its applications in artificial neural system. In this study, we present a BP/CdS heterostructure-based synapse with ultra-low consumption. The device shows remarkable negative light response maximum responsivity up to 4.1 × 10
Capable of reflecting the location and intensity external harmful stimuli, a nociceptor network is great importance for receiving pain-perception information. However, hardware-based implementation through use transistor array remains challenge in area brain-inspired neuromorphic applications. Herein, simple ionotronic junctionless oxide with abilities successfully realized due to coplanar-gate proton-coupling effect sodium alginate biopolymer electrolyte. Several important characteristics...
Abstract Visual adaptation allows organisms to accurately perceive the external world even in dramatically changing environments, from dim starlight bright sunlight. In particular, polarization‐sensitive visual can effectively process polarized information that is ubiquitous nature. However, such an intriguing characteristic still remains a great challenge semiconductor devices. Herein, novel porous metal–organic‐framework phototransistor with anisotropic‐ReS 2 ‐based heterojunction...
Abstract Among today’s nonvolatile memories, ferroelectric-based capacitors, tunnel junctions and field-effect transistors (FET) are already industrially integrated and/or intensively investigated to improve their performances. Concurrently, because of the tremendous development artificial intelligence big-data issues, there is an urgent need realize high-density crossbar arrays, a prerequisite for future memories emerging computing algorithms. Here, two-terminal ferroelectric fin diode...
Abstract Neuromorphic computing systems, which mimic the operation of neurons and synapses in human brain, are seen as an appealing next-generation method due to their strong efficient abilities. Two-dimensional (2D) materials with dangling bond-free surfaces atomic-level thicknesses have emerged promising candidates for neuromorphic hardware. As a result, 2D devices may provide ideal platform developing multifunctional applications. Here, we review recent based on material The synthesis...
Abstract Reproducing human visual functions with artificial devices is a long‐standing goal of the neuromorphic domain. However, emulating chemical language communication system in fluids remains grand challenge. Here, “multi‐color” hydrogel‐based photoelectrochemical retinomorphic synapse reported unique chemical‐ionic‐electrical signaling an aqueous electrolyte that enables, e.g., color perception and biomolecule‐mediated synaptic plasticity. Based on specific enzyme‐catalyzed chromogenic...
Abstract The traditional von Neumann architecture has demonstrated inefficiencies in parallel computing and adaptive learning, rendering it incapable of meeting the growing demand for efficient high-speed computing. Neuromorphic with significant advantages such as high parallelism ultra-low power consumption is regarded a promising pathway to overcome limitations conventional computers achieve next-generation artificial intelligence. Among various neuromorphic devices, synapses based on...
We have studied the exciton properties of single-wall carbon nanotubes by solving Bethe-Salpeter equation within tight-binding models. The screening effect $\ensuremath{\pi}$ electrons in is treated random phase and static screened approximations. wave functions along tube axis circumference are discussed as a function $(n,m)$. A $2n+m=\mathrm{const}$ family behavior found length, excitation energy, binding environmental shift. This understood terms trigonal warping around $K$ point graphene...
We have developed the electron-phonon matrix element in single-wall carbon nanotubes by using extended tight-binding model based on density functional theory. calculate this to study coupling for radial breathing mode (RBM) and $G$-band $A$ symmetry modes of nanotubes. Three well-defined family patterns are found RBM, longitudinal optical (LO) transverse (TO) mode. find that among LO, TO modes, LO has largest interaction. To transport properties metallic nanotubes, we relaxation time mean...
We overcome the resolution limit of Fourier-transform spectrometry and measure instrumental line-shape-free broadband molecular spectra with lines narrower than optical path-limited resolution. do this by using an frequency comb precisely matching maximum delay range spectrometer to line spacing intensities individual lines. This method allows measurements undistorted high-resolution acquisition time interferometer length reduced orders magnitude scale accuracy given comb.
We demonstrate self-referencing of a Tm-doped fiber oscillator-amplifier system by performing octave-spanning supercontinuum generation in periodically poled lithium niobate waveguide. model the numerically and show good agreement with experiment.
Abstract Optoelectronic‐neuromorphic transistors are vital for next‐generation nanoscale brain‐like computational systems. However, the hardware implementation of optoelectronic‐neuromorphic devices, which based on conventional transistor architecture, faces serious challenges with respect to synchronous processing photoelectric information. This is because mono‐semiconductor material cannot absorb adequate light ensure efficient light–matter interactions. In this work, a novel...
Spatial coordinate and visual orientation recognition in cortical cells play important roles the system. Herein, spatiotemporally processed neurons are mimicked by a facile coplanar multigate two-dimensional (2D) MoS2 electric-double-layer transistor with proton-conducting poly(vinyl alcohol) electrolytes as laterally coupled gate dielectrics. Fundamental neuromorphic behaviors, e.g., excitatory postsynaptic current paired-pulse facilitation, were successfully mimicked. For first time,...
Abstract Lead sulfide (PbS) has attracted great attention due to its unique electronic, optical, and chemical properties. In particular, the narrow bandgap of PbS (≈0.37 eV) makes it very suitable for ultrafast application in optical communication or even longer wavelength region. this work, nanoparticles' (NPs) dispersion without any polymer is utilized as saturable absorber (SA) generate pulse a fiber ring laser first time. The characterization nonlinear properties NPs are investigated...