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学者姓名:陈恩果
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为进一步提升图像处理的精准度和高效性,在对现有算法进行详尽分析的基础上,致力于研究一种创新的基于显著图的二维至三维转换技术.因此,针对动态显著性图的提取,利用空洞卷积实现多尺度空间特征抽取,通过时空域特征抽取模块融合空间与时间信息形成显著性图谱序列,并采用卷积长短时存储器(ConvLSTM)单元用于三维动态内容生成.在DAVIS和FBMS数据集上,量化指标优于FCNS、DSS等算法,2D-3D转换的立体舒适度得分也更高.该技术有效提升了 2D转3D的准确性和效率,具有应用价值.
Keyword :
2D转3D 2D转3D 显著图 显著图 深度信息 深度信息 视觉重要性 视觉重要性
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GB/T 7714 | 翁高奕 , 姚剑敏 , 陈恩果 et al. 基于显著图的2D转3D技术研究 [J]. | 信息技术与信息化 , 2025 , (2) : 183-186 . |
MLA | 翁高奕 et al. "基于显著图的2D转3D技术研究" . | 信息技术与信息化 2 (2025) : 183-186 . |
APA | 翁高奕 , 姚剑敏 , 陈恩果 , 严群 . 基于显著图的2D转3D技术研究 . | 信息技术与信息化 , 2025 , (2) , 183-186 . |
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The light source of traditional edge-lit backlight modules typically consists of LED bars which composed of multiple LED chips. However, the spacing between the chips can create distinct bright and dark spots (Hot Spot) on the input surface of the light guide plate (LGP), thereby affecting the optical performance of the backlight module. In this paper, we proposed an edge-lit backlight module with staggered light bars, incorporating a light propagation cavity design to enhance light receiving efficiency and eliminate Hot Spot. Firstly, we designed the structure of the staggered light bars and the light propagation cavity. Secondly, the advantages of the new backlight module design in eliminating Hot Spot were verified through TracePro simulations. The simulation results showed that the maximum irradiance of the backlight module reached 81,010 W/m(2), and the luminance uniformity peaked at 75.142 %. Compared to the traditional backlight modules, the light receiving efficiency was increased by 6.62 %, and the luminance uniformity was improved by 1.34 times, which effectively mitigated the Hot Spot. Finally, we discussed the impact of the improved backlight module in reducing the thickness of the LGP and decreasing the number of LED chips, achieved superior optical performance. This study demonstrates the significant advantages of the light propagation cavity in eliminating Hot Spot within backlight modules.
Keyword :
Edge-lit backlight module Edge-lit backlight module Hot spot Hot spot LED light propagation cavity LED light propagation cavity Optical design Optical design Staggered dual light bars Staggered dual light bars
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GB/T 7714 | Qiu, Yingyi , Ye, Yun , Xie, Hongxing et al. An LED light propagation cavity with staggered light bars for eliminating the Hot Spot [J]. | OPTICS COMMUNICATIONS , 2025 , 574 . |
MLA | Qiu, Yingyi et al. "An LED light propagation cavity with staggered light bars for eliminating the Hot Spot" . | OPTICS COMMUNICATIONS 574 (2025) . |
APA | Qiu, Yingyi , Ye, Yun , Xie, Hongxing , Chen, Peihui , Liu, Kuanhuang , Chen, Enguo et al. An LED light propagation cavity with staggered light bars for eliminating the Hot Spot . | OPTICS COMMUNICATIONS , 2025 , 574 . |
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光刻法是一种制备微型发光二极管(Micro-LED)像素化色转换薄膜的可靠方案,但存在量子点与光刻胶兼容性的难题.本文开发了一种通过N-苯基马来酰亚胺(NPMI)侧链改性的丙烯酸树脂制备兼容量子点的光刻胶,侧链基团上C==O键能与量子点形成配位键从而钝化表面缺陷,并提高量子点分散性,使光刻胶溶液的量子产率(PLQY)达到76.1%(红色)和43.4%(绿色).最终制备色转换薄膜时钝化效果仍然存在,绿色和红色的PLQY分别达到了66.4%和36.4%,像素化图形最小尺寸可实现10 μm×10 μm的矩形阵列.本研究中的树脂侧链改性方法为开发兼容量子点的光刻胶提供了指导,为Micro-LED全彩化的商业化应用提供了一种简便且可行的解决方案.
Keyword :
像素化 像素化 树脂改性 树脂改性 色转换 色转换 量子点光刻胶 量子点光刻胶
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GB/T 7714 | 蒋博瑞 , 宋博翔 , 陈恩果 et al. 基于N-苯基马来酰亚胺改性的量子点光刻胶制备色转换像素化薄膜 [J]. | 发光学报 , 2025 , 46 (3) : 536-544 . |
MLA | 蒋博瑞 et al. "基于N-苯基马来酰亚胺改性的量子点光刻胶制备色转换像素化薄膜" . | 发光学报 46 . 3 (2025) : 536-544 . |
APA | 蒋博瑞 , 宋博翔 , 陈恩果 , 罗家俊 , 唐江 . 基于N-苯基马来酰亚胺改性的量子点光刻胶制备色转换像素化薄膜 . | 发光学报 , 2025 , 46 (3) , 536-544 . |
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Single image super-resolution (SISR) is an emerging application in medical imaging, as high-quality images need to be obtained with limited radiation dose, such as low-dose computed tomography and low-field magnetic resonance imaging. However, a certain amount of noise and artifacts are frequently present in medical images due to the constraints of imaging equipment and the surrounding environment. This can cause structural distortion and blurring of details in the resulting medical images. This research proposes a dual-domain residual convolutional neural network (DDRN) based super-resolution reconstruction technique for medical images. Firstly, shallow feature extraction is performed on the low-resolution images through convolutional networks. Secondly, a newly designed spatial domain residual block (SDRB) is employed to alleviate gradient vanishing issues while enhancing feature reuse, thereby facilitating the recovery of edge details. Additionally, a coordinate attention (CA) module is incorporated to capture both channel-wise and long-range spatial correlations. By assigning adaptive weights to different channels and capturing global spatial context, CA enables precise restoration of texture and structural details in medical images. Subsequently, parallel wavelet domain residual blocks (WDRB) are employed to capture multi-directional high-frequency information, facilitating the restoration of clear texture details. Lastly, by introducing gradient space loss for training guidance, the network is encouraged to focus more on restoring the geometric structure of the image and suppressing artifacts. Extensive experiments demonstrate the superior performance of DDRN. At a scaling factor of 4, the network achieves a peak signal-to-noise ratio (PSNR) of 37.28 dB and a structural similarity index (SSIM) of 0.9310 on the COVID-19 CT lung segmentation dataset, and a PSNR of 28.85 dB and an SSIM of 0.9012 on the MRBrain2018 dataset.
Keyword :
Deep convolutional neural network Deep convolutional neural network Gradient space loss Gradient space loss Medical image super-resolution Medical image super-resolution Residual blocks Residual blocks
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GB/T 7714 | Chen, Peihui , Zheng, Xingke , Qiu, Yingyi et al. Dual-domain residual CNN for medical image super-resolution with enhanced detail preservation and artifact suppression [J]. | SIGNAL IMAGE AND VIDEO PROCESSING , 2025 , 19 (6) . |
MLA | Chen, Peihui et al. "Dual-domain residual CNN for medical image super-resolution with enhanced detail preservation and artifact suppression" . | SIGNAL IMAGE AND VIDEO PROCESSING 19 . 6 (2025) . |
APA | Chen, Peihui , Zheng, Xingke , Qiu, Yingyi , Liu, Kuanhuang , Chen, Enguo , Xu, Sheng et al. Dual-domain residual CNN for medical image super-resolution with enhanced detail preservation and artifact suppression . | SIGNAL IMAGE AND VIDEO PROCESSING , 2025 , 19 (6) . |
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Quantum dots(QDs)exhibit excellent optical properties with their size tunability,excellent photoluminescence quantum yield(PLQY),and broad spectral absorption,making them an ideal material choice for full-col- or,wide-gamut LED color conversion layers. In particular,MAPbBr3 quantum dots(PQDs)are not only easy to prepare,but also possess excellent photovoltaic properties,and thus are considered to be a material with great potential for commercialization. However,the ligands on the surface of MAPbBr3 PQDs are highly susceptible to detachment after their synthesis,leading to an increase in the density of surface defect states,which makes them less stable under environmental factors such as water-oxygen and temperature,thus further degrading the PLQY. In this study,we propose an efficient one-step strategy for the synthesis of MAPbBr3 PQDs∶MAPbBr3 PQDs with excellent stability and high PLQY,which were successfully synthesized by ligand-assisted redeposition and the innovative use of 2-hex-yldecanoic acid(DA)ligand to replace the conventional oleic acid(OA)ligand at room temperature,and the double-short-chain DA ligand was able to establish a stronger coordination bond with the MAPbBr3 PQDs compared with that of the single-length carbon chain OA ligand. The strong interactions between the ligands and the PQDs contribute to the overall passivation of the lattice defects,thus mitigating the non-radiative recombination process and enhancing the environmental stability. As a result,the modified MAPbBr3 PQDs not only exhibited up to 87. 8% PLQY,but also showed higher stability in both water and oxygen environments. The PL peak of MAPbBr3 PQDs modified with DA ligands remained at 68. 3% of its original value after being left for half a month in a room temperature environment, whereas OA ligand-modified PQDs exhibited almost complete fluorescence burst. Subsequently,the DA ligand-modified green MAPbBr3 PQDs,red CsPbBrI2 PQDs,and blue CsPbCl1. 5Br1. 5 PQDs were coated and cured in a polystyrene(PS)environment to form a film,which can be used as a color conversion material instead of the traditional phosphors for the backlight of light-emitting diode(LED)displays. The color gamut is 137. 09% under NTSC standard. © 2025 Editorial Office of Chinese Optics. All rights reserved.
Keyword :
Aspect ratio Aspect ratio Atomic emission spectroscopy Atomic emission spectroscopy Carbon Quantum Dots Carbon Quantum Dots Color Color Defect density Defect density Density (optical) Density (optical) Energy efficiency Energy efficiency Grain boundaries Grain boundaries Laser beams Laser beams Layered semiconductors Layered semiconductors Ligands Ligands Light sensitive materials Light sensitive materials Liquid crystals Liquid crystals Metamorphic rocks Metamorphic rocks Nanocrystallization Nanocrystallization Photoluminescence Photoluminescence Quantum yield Quantum yield
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GB/T 7714 | Li, Gongming , Cai, Junhu , Lai, Wenzong et al. Performance Enhancement of MAPbBr3 Perovskite Quantum Dot for Wide Color Gamut LED via Double Short-chain Ligand Modification [J]. | Chinese Journal of Luminescence , 2025 , 46 (1) : 1-11 . |
MLA | Li, Gongming et al. "Performance Enhancement of MAPbBr3 Perovskite Quantum Dot for Wide Color Gamut LED via Double Short-chain Ligand Modification" . | Chinese Journal of Luminescence 46 . 1 (2025) : 1-11 . |
APA | Li, Gongming , Cai, Junhu , Lai, Wenzong , Chen, Xiaogang , Zha, Nan , Ye, Yun et al. Performance Enhancement of MAPbBr3 Perovskite Quantum Dot for Wide Color Gamut LED via Double Short-chain Ligand Modification . | Chinese Journal of Luminescence , 2025 , 46 (1) , 1-11 . |
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Cadmium sulfide (CdS) nanocrystals with diverse morphologies are extensively utilized in various fields. For example, CdS nanorods are widely used in photocatalysis and photodetectors due to their high efficiency in photogenerated carrier separation. However, existing methods for synthesizing CdS nanorods typically require high temperatures and pressures, which limit the application of this material. In this work, an efficient hot injection procedure to control about growth in Cadmium sulfide nanorods by optimizing the proportion of dodecanethiol is reported, demonstrating the effective control of CdS nanorods growth by dodecanethiol. The maximum degradation efficiency of CdS nanorods applied to photodegradation of Rhodamine B (RhB) can reach 96%, indicating that the synthesized CdS nanorods have excellent photocatalytic properties. It is attributed to their broad absorption within the visible spectrum, which results in excellent light harvesting. And their one-dimensional structure facilitates carrier separation. Dodecanethiol act as a selective role within morphology of the CdS nanomaterials, which is anticipated to be utilized in the creation of other sulfides with different morphologies. © 2025 SPIE.
Keyword :
Laser beams Laser beams Nanoclay Nanoclay Nanocrystals Nanocrystals Nanorods Nanorods Photocatalysis Photocatalysis Photodegradation Photodegradation Photodetectors Photodetectors Photonics Photonics Photons Photons Rhodamine B Rhodamine B
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GB/T 7714 | Zhang, Liyan , Zhao, Wenxiao , Ye, Yun et al. The rapid synthesis of CdS nanorods by optimizing the dodecanethiol proportion for photocatalysis [C] . 2025 . |
MLA | Zhang, Liyan et al. "The rapid synthesis of CdS nanorods by optimizing the dodecanethiol proportion for photocatalysis" . (2025) . |
APA | Zhang, Liyan , Zhao, Wenxiao , Ye, Yun , Lin, Zexi , Wang, Ziyi , Zheng, Xingke et al. The rapid synthesis of CdS nanorods by optimizing the dodecanethiol proportion for photocatalysis . (2025) . |
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A cholesteric liquid crystal (CLC) reflective display is a device that employs CLC to reflect external ambient light, thereby facilitating the transfer of information. However, traditional CLC reflective displays exhibit a relatively slow response speed and are unable to be displayed in dark environments. Quantum dots (QDs), which are nanoparticles with excellent luminescence performance, can be doped to enhance device performance and the display effect. This paper proposes a multimode reflective display device (MRDE) that can respond rapidly to temperature and low-frequency AC voltage, and can realise four modes of display: reflective mode, transmissive mode, scattering mode and fluorescent mode. These modes can be converted to enhance the display effect and expand the device's application range in diverse scenarios. In reflective mode, MRDE is capable of shifting between reflective, scattering mode and transmissive modes in response to changes in temperature and voltage, and of encrypting and decrypting information. In fluorescent mode, the device is capable of displaying in dim environments, and the emission wavelength can be red-shifted from 628 nm to 636 nm within the temperature range of 248 K to 373 K. Additionally, it can provide an early warning for low and high temperature environments. The device is capable of providing early warning and encryption of information in low and high temperature environments. This provides a theoretical basis and guidance for the preparation of new devices with improved display performance, multifunctional integration, and temperature-responsive information encryption. © 2025 SPIE.
Keyword :
Cholesteric liquid crystals Cholesteric liquid crystals Fiber optic sensors Fiber optic sensors Hadrons Hadrons Laser beams Laser beams Liquid crystal displays Liquid crystal displays Nanocrystals Nanocrystals Photoelectric cells Photoelectric cells Photoelectric microscopes Photoelectric microscopes Photons Photons Red Shift Red Shift
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GB/T 7714 | Zhang, Tianning , Zheng, Xingke , Ye, Yun et al. Voltage/temperature responsive multimode reflective display devices for information encryption and smart windows [C] . 2025 . |
MLA | Zhang, Tianning et al. "Voltage/temperature responsive multimode reflective display devices for information encryption and smart windows" . (2025) . |
APA | Zhang, Tianning , Zheng, Xingke , Ye, Yun , Chen, Enguo , Guo, Tailiang . Voltage/temperature responsive multimode reflective display devices for information encryption and smart windows . (2025) . |
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In domains such as medical diagnosis, food safety, and environmental protection, the application of appropriate sensors for precise detection of sample concentrations is of paramount importance. This research put forward a surface plasmon resonance sensor based on a metal grating. Relying on the surface plasmon theory and employing FDTD Solutions, the reflection curves of an aluminum grating under different refractive indices of the medium were simulated. A sequence of fabrication techniques, including photolithography, electroforming template, and nanoimprinting technology, were adopted to fabricate an aluminum metal grating film with a period of 450nm. Eventually, the sensor tests were conducted by setting air, water, and ethanol solutions to test the response of the surface plasmon resonance sensor to different refractive indices. The results indicated that the sensor was capable of effectively discriminating surface substances, with a refractive index sensitivity of S = 78.18nm/RIU. © 2025 SPIE.
Keyword :
Diagnosis Diagnosis Electroforming Electroforming Nanoimprint lithography Nanoimprint lithography Surface plasmon resonance Surface plasmon resonance
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GB/T 7714 | Xiao, Xinyu , Chen, Enguo , Guo, Tailiang . Surface plasmon resonance sensor based on metal grating [C] . 2025 . |
MLA | Xiao, Xinyu et al. "Surface plasmon resonance sensor based on metal grating" . (2025) . |
APA | Xiao, Xinyu , Chen, Enguo , Guo, Tailiang . Surface plasmon resonance sensor based on metal grating . (2025) . |
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Exceptional temperature sensitivity and the resulting luminescence response position perovskite materials as potent contenders in wearable sensing devices. However, the mechanisms driving temperature-induced fluorescence reversibility, especially across an ultrawide temperature range or at freezing temperatures, remain poorly understood. In this study, we systematically elucidate the mechanisms governing temperature-induced fluorescence reversibility in CsPbBr3/PS composite and astonishingly observe the reversible fluorescence enhancement under freezing temperatures for the first time. Elevated temperature-induced lattice phase transitions and freezing temperature-associated lattice distortions in CsPbBr3 can modulate the electrons' non-radiative recombination process, leading to temperature-dependent fluorescence quenching and enhancement, respectively. Notably, these structural perturbations can be reversed with temperature cycling, ensuring the reversibility of thermally induced fluorescence phenomena. Leveraging these insights, we develop a CsPbBr3/PS-based wearable temperature sensor that operates over an ultrawide range (263 K ∼ 423 K) with high precision (error margin within ± 10 %). Our findings highlight the significant breakthrough of CsPbBr3 in temperature sensing and wearable applications. © 2025 Elsevier Ltd
Keyword :
Fluorescence quenching Fluorescence quenching Scintillation Scintillation Setting Setting Thermocouples Thermocouples
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GB/T 7714 | Cai, Junhu , Lai, Wenzong , Chen, Yu et al. Ultrawide-range wearable temperature sensor utilizing reversible luminescence of CsPbBr3/PS composites [J]. | Nano Energy , 2025 , 142 . |
MLA | Cai, Junhu et al. "Ultrawide-range wearable temperature sensor utilizing reversible luminescence of CsPbBr3/PS composites" . | Nano Energy 142 (2025) . |
APA | Cai, Junhu , Lai, Wenzong , Chen, Yu , Ye, Yun , Xu, Sheng , Guo, Tailiang et al. Ultrawide-range wearable temperature sensor utilizing reversible luminescence of CsPbBr3/PS composites . | Nano Energy , 2025 , 142 . |
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Objective Inorganic perovskite quantum dots (PQDs) have garnered significant interest due to their exceptional optical characteristics, including narrow emission spectra and high photoluminescence quantum yield (PLQY). Despite these advantages, PQDs are often hindered by environmental instability, particularly notable in CsPbI3 QDs which exhibit lower PLQY and susceptibility to phase transitions at ambient conditions, compromising optical performance. To address these challenges, enhancing the stability and optical properties of CsPbI3 QDs is crucial. Current research focuses on methods such as ligand exchange, encapsulation, and ion doping, with the latter proving particularly effective in improving PLQY and stability. Ion doping, involving substitution at A, B, or X sites, can mitigate Pb toxicity, alter bond lengths, and enhance phase stability, thereby significantly impacting quantum dot performance. Initial CsPbI3 QDs typically demonstrate a PLQY of 50% to 60% but suffer rapid fluorescence quenching within ten days in environmental settings. This study proposes Zn ion doping as a promising strategy to augment the optical properties of perovskite quantum dots. Methods This article employs a high-temperature thermal injection method for the synthesis of Cs-oleate precursors. Initially, Cs-oleate precursors are synthesized and subsequently rapidly injected into a high-temperature octadecene solution containing PbX2, ZnI2 and ligands. The reaction proceeds for a few seconds before the mixture is quenched in an ice water bath. Various molar ratios of ZnI2/PbI2 can be adjusted to achieve a series of CsPb1-xZnxI3 (0 2 concentration, while the overall cubic structure of the QDs remains unchanged. This modification enhances the radiative recombination rate and effectively mitigates defect states. The maximum enhancement in photoluminescence quantum yield (PLQY) reaches 98%, accompanied by improved stability(Fig.3(b)). Original CsPbI3 QDs exhibit complete fluorescence quenching within ten days at room temperature, whereas Zn-doped CsPbI3 QDs maintain over 80% of their initial PLQY under the same conditions(Fig.3(d)). Transmission electron microscopy (TEM) analysis shows that despite the addition of ZnI2 precursor, the QDs retain their cubic morphology, with the average particle size decreasing from 18.9 nm to 17.6 nm. This size reduction is attributed to the inhibitory effect of I ions on further QD growth. The interplanar spacing of the QDs decreases from 3.16 Å to 3.13 Å, indicating lattice contraction induced by Zn doping. X-ray diffraction (XRD) patterns confirm that Zn-doped CsPbI3 QDs exhibit no new diffraction peaks compared to pure CsPbI3 QDs, but show a gradual shift of peaks towards larger angles, indicating successful substitution of Pb by Zn ions. Analysis of time-resolved photoluminescence (TRPL) spectroscopy reveals that CsPbI3 QDs have an average fluorescence lifetime of 138.44 ns, while Zn-doped CsPbI3 QDs exhibit a shorter lifetime of 103.61 ns(Fig.3(e)), attributed to the suppression of halogen vacancy defects and shallow-level states by Zn doping(Tab.1). This doping strategy effectively passivates surface defects and enhances the optical properties of CsPbI3 QDs. Conclusions In this study, CsPbI3 quantum dots doped with Zn2+ were successfully synthesized using ZnI2 via the thermal injection method. The incorporation of Zn enhanced the phase stability of CsPbI3 quantum dots compared to their undoped counterparts. Photoluminescence quantum yield (PLQY) significantly improved from 56% to 98%, with PLQY retention above 80% after 10 days. Subsequently, narrow-emitting Zn:CsPbI3, CsPbBr3, and CsPbCl3 quantum dots were selected as replacements for conventional phosphors in LED color conversion materials. These quantum dots achieved a color gamut of 135.22% based on the National Television Standards Committee (NTSC) standard(Tab.2), highlighting their promising applications in LED display technologies. Copyright ©2025 Infrared and Laser Engineering. All rights reserved.
Keyword :
Crystal defects Crystal defects Crystalline materials Crystalline materials Crystals Crystals Defect engineering Defect engineering Defect states Defect states Durability Durability Ice Ice Optical emission spectroscopy Optical emission spectroscopy Optical materials Optical materials Phase composition Phase composition Semiconductor growth Semiconductor growth Structure (composition) Structure (composition) Synthetic metals Synthetic metals Yield stress Yield stress
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GB/T 7714 | Zha, Nan , Cai, Junhu , Ye, Yun et al. Zn2+-doped CsPbI3 quantum dots for color conversion LEDs(cover paper·invited) [J]. | Infrared and Laser Engineering , 2025 , 54 (1) . |
MLA | Zha, Nan et al. "Zn2+-doped CsPbI3 quantum dots for color conversion LEDs(cover paper·invited)" . | Infrared and Laser Engineering 54 . 1 (2025) . |
APA | Zha, Nan , Cai, Junhu , Ye, Yun , Xu, Sheng , Guo, Tailiang , Chen, Enguo . Zn2+-doped CsPbI3 quantum dots for color conversion LEDs(cover paper·invited) . | Infrared and Laser Engineering , 2025 , 54 (1) . |
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