A5109037720- Advanced Fiber Optic Sensors
- Advanced Fluorescence Microscopy Techniques
- Photonic and Optical Devices
- Optical Coherence Tomography Applications
- Corrosion Behavior and Inhibition
- Photonic Crystal and Fiber Optics
- Hydrogen embrittlement and corrosion behaviors in metals
- Optical Network Technologies
- Advanced Fiber Laser Technologies
- Photoacoustic and Ultrasonic Imaging
- Spectroscopy and Chemometric Analyses
- Optical Systems and Laser Technology
- Engineering Applied Research
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Concrete Corrosion and Durability
- Metallurgy and Material Science
- Advanced Measurement and Metrology Techniques
- Geochemistry and Elemental Analysis
- Advanced battery technologies research
- Visual perception and processing mechanisms
- Image Processing Techniques and Applications
- Laser-induced spectroscopy and plasma
- Electrochemical Analysis and Applications
- Nanoporous metals and alloys
China Jiliang University
2023-2024
Sichuan University
2024
University of Hong Kong
2023-2024
West China Hospital of Sichuan University
2024
Xiamen Medical College
2023
University of Science and Technology Beijing
2023
Zhongshan Hospital of Xiamen University
2023
Qingdao University
2023
Chinese University of Hong Kong
2023
Chinese Academy of Medical Sciences & Peking Union Medical College
2022
Observing subcellular structural dynamics in living cells has become the goal of super-resolution (SR) fluorescence microscopy. Among typical SRM techniques, structured illumination microscopy (SIM) stands out for its fast imaging speed and low photobleaching. However, 2D-SIM requires nine raw images to obtain a SR image, leading undesirable artifacts live-cell imaging. In this paper, we propose single-frame (SF-SIM) method based on deep learning that achieves using only single image...
Discovery of new phosphors with desired properties is great significance for developing high optical quality solid-state lighting. The single-particle-diagnosis approach an effective way to search novel by analyzing tiny single crystals screened from the fired powder mixtures. In this work, a broadband orange-emitting phosphor Sr<sub>3</sub>Si<sub>8</sub>O<sub>4</sub>N<sub>10</sub>:Eu<sup>2+</sup> solid state lighting was discovered method. oxonitridosilicate crystallizes in monoclinic space...
Modulation-enhanced localization microscopy (MELM) has demonstrated significant improvements in both lateral and axial precision compared to conventional single-molecule (SMLM). However, modulated illumination based MELM (MELMxy) remains fundamentally limited two-dimensional imaging. Here we present three-dimensional Single-Molecule Modulated Illumination Localization Estimator (SMILE) that synergistically integrates modulation with point spread function engineering. By simultaneously...
Imaging three-dimensional, subcellular structures with high axial resolution has always been the core purpose of fluorescence microscopy. However, trade-offs exist between and other important technical indicators, such as temporal resolution, optical power density, imaging process complexity. We report a new modality, interference structured illumination microscopy (FI-SIM), which is based on three-dimensional for wide-field lateral reconstruction. FI-SIM can acquire images quickly within...
In guinea pig retina, immunostaining reveals a dual gradient of opsins: cones expressing opsin sensitive to medium wavelengths (M) predominate in the upper whereas shorter (S) lower retina. Whether these gradients correspond functional postreceptoral neurons is essentially unknown. Using monochromatic flashes, we measured relative weights with which M, S, and rod signals contribute horizontal cell responses. For background that produced 4.76 log 10 photoisomerizations per second (Rh*/rod/s),...
For the inter-modal four-wave mixing (IMFWM) in high-power fiber lasers, phase-matching frequency shift and coherence length are calculated to determine mode combinations corresponding IMFWM peaks; then, parameters of laser optimized accordingly suppress IMFWM. On basis parameter optimization, coiling method is applied further To validate this method, a master oscillator power amplifier was configured with 20/400 produce peaks at 1108 1071.6 nm output spectrum, then those were removed by...
Sinusoidal rectification (i.e., desinusoiding) is necessary for scanning imaging systems and typically achieved by calculating a transform from calibration image such as regular grid. This approach susceptible to error due electronic or mechanical instability that can alter the phase of window with respect transform. Here, we show calibration-free method implemented live video light ophthalmoscope (SLO) without adaptive optics (AO). approach, which capitalizes on positional differences in...
We present the segmented corrosion method that uses hydrofluoric acid to etch fiber of a laser for removing high-power cladding light improve stripping uniformity and power handling capability. For theoretical guidelines, we propose simulation model etched-fiber evaluate relationship between parameters attenuation analyze achieved with corrosion. A two-segment etched is fabricated 19.8 dB capability up 670 W. find stripped uniformly temperature distribution uniform without formation hot spots.
A spectral reduction algorithm for an échelle spectrometer with spherical mirrors that builds a one-to-one correspondence between the wavelength and pixel position is proposed. The accuracy improved by calculating offset distance of principal ray from center image plane in two-dimensional vertical direction compensating line bending reflecting prism. simulation experimental results verify maximum deviation entire less than one pixel. This ensures wavelengths calculated spectrograms...
In an echelle spectrometer equipped with a prism cross-dispersion element, wavelength calibration is very difficult because of the complex, nonlinear interaction between and grating. From geometry dispersion equations for grating, detailed mathematical model derived that fits refractive index in real time. An expression relating index, wavelength, image coordinates constructed, standard sources positions are adopted to timely calculate which affected by ambient factors such as temperature...
We have demonstrated a Yb-doped fiber laser (YDFL) based on multifunctional acousto-optic tunable filter (AOTF) with flexible wavelength generation capability. The number of channels, as well their diffracted wavelengths and corresponding peak transmittances the AOTF, can be widely tuned by changing composite drive signal from homemade arbitrary wave (AWG) board enabling single-/multi-wavelength lasing different central relative intensities. maximal tuning range minimal resolved spacing are...
Three-dimensional structured illumination microscopy (3D-SIM) plays an essential role in biological volumetric imaging with the capabilities of improving lateral and axial resolution. However, traditional linear 3D algorithm is sensitive to noise generates artifacts, while low temporal resolution hinders live-cell imaging. In this paper, we propose a novel 3D-SIM based on total variation (TV) fast iterative shrinkage threshold (FISTA), termed TV-FISTA-SIM. Compared conventional algorithms,...
Object recognition, which is also referred as object classification or type aims at discriminating types in remote sensing images. With the availability of high resolution images, recognition attracts more and attention. Different from traditional methods mainly using hand-crafted features, we propose an method that combines deep features extracted a convolutional neural network (CNN) to recognize aircrafts ships The proposed consists two stages. In training stage, images objects with...
Optical microscopy is an essential tool for exploring the structures and activities of cells tissues. To break limit resolution caused by diffraction, researchers have made continuous advances innovations to improve optical since 1990s. These contributions, however, still make sub-10[Formula: see text]nm imaging obstacle. Here, we name a series technologies as modulated illumination localization (MILM), which makes ultra-high-resolution practical. Besides, review recent progress 2017 when...
A quantitative analysis method for corrosion products based on terahertz spectroscopy is proposed in this paper. Mixture samples consisting of three major (magnetite, hematite, and goethite) were prepared 51 different concentrations. The refractive index spectra measured by time-domain projected to the 2D score diagram performing principal component analysis. Euclidean distances between mixtures pure analyte used build a concentration prediction model. results indicate that established model...
In this study, the USGS black shale reference material SBC ‐1 was investigated as a matrix‐matched for both intra‐laboratory calibration and inter‐laboratory comparison of high‐precision Re‐Os dating organic‐rich sedimentary rocks. This analysed isotopic composition by three digestion protocols – inverse aqua regia , CrO 3 ‐H 2 SO 4 H O ‐ HNO . The results obtained yielded similar Re mass fractions but slightly (~ 5%) higher Os lower 187 Os/ 188 values than digestions. data set exhibited...