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学者姓名：黄衍堂
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Abstract ：
Broadband photodetection, especially for the high-intensity pulsed lasers, has garnered increasing interest in photophysics and applied sciences driven by the development of pulsed lasers. However, direct broadband photodetection of high-intensity pulsed lasers, with precisely capturing their spatiotemporal properties, has been hampered by low saturation intensity or damage threshold of traditional optoelectronic materials. Here, we demonstrate that strategic enhancement of excitonic effects in two-dimensional (2D) layered hybrid perovskite can enable robust high-order multiphoton absorption (MPA) optoelectronics with achieving strong four-photon absorption (4PA) and five-photon absorption (5PA) nonlinearities as well as efficient electronic properties simultaneously. This effectively overcomes the limitations of mainstream photodetectors. Our approach facilitates direct photodetection and high-precision imaging of high-intensity femtosecond lasers (21.5 GW/cm2) across a broad wavelength range of 800 to 2300 nanometer. These results offer valuable insights into advancing high-order nonlinearity-based optoelectronics and provide practical solutions for direct measurement tools of intensive lasers, filling the blank of high-precision characterization of intense-field laser phenomena.
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| GB/T 7714 | Xu, Yanming , Xu, Haojie , Zhu, Pengfei et al. Broadband photodetection of intense lasers via exciton-enhanced high-order multiphoton-absorption optoelectronics in 2D hybrid perovskite [J]. | SCIENCE ADVANCES , 2025 , 11 (21) . |
| MLA | Xu, Yanming et al. "Broadband photodetection of intense lasers via exciton-enhanced high-order multiphoton-absorption optoelectronics in 2D hybrid perovskite" . | SCIENCE ADVANCES 11 . 21 (2025) . |
| APA | Xu, Yanming , Xu, Haojie , Zhu, Pengfei , Xu, Jinlong , Huang, Yantang , Sun, Zhihua et al. Broadband photodetection of intense lasers via exciton-enhanced high-order multiphoton-absorption optoelectronics in 2D hybrid perovskite . | SCIENCE ADVANCES , 2025 , 11 (21) . |
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Lensless imaging microscopy has gained extensive application with the merits of system compactness and cost efficiency; however, its spatial resolution is usually compromised compared to conventional lens-based microscopes. To further enhance the spatial resolution, we built a lensless imaging system integrating a phase mask and a CMOS image sensor, and employed fluorescence fluctuation super-resolution microscopy (FF-SRM) algorithms to fully exploit the fluorescence intermittency (FI) characteristics of fluorescent molecules for high-resolution lensless image reconstruction. The study demonstrates that lensless image sequences processed by the Wiener deconvolution method can effectively retain the original fluorescence intermittency information, allowing for high-resolution reconstruction using FF-SRM algorithms. Furthermore, by combining expansion microscopy (ExM) and leveraging multi-algorithm synergy, we obtained additional improvements in spatial resolution and image quality for lensless imaging, facilitating clear visualization of biological subcellular organelles. This scheme offers a new pathway to achieve high spatial resolution imaging with practical advantages in simplicity and affordability.
Keyword ：
fluorescence intermittency fluorescence intermittency lensless imaging lensless imaging multi-algorithm synergy multi-algorithm synergy super-resolution reconstruction super-resolution reconstruction
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| GB/T 7714 | Zeng, Zhiping , Chen, Xinyi , Xu, Biqing et al. High-Resolution Lensless Microscopy Imaging Based on Fluorescence Intermittency [J]. | JOURNAL OF BIOPHOTONICS , 2025 , 18 (9) . |
| MLA | Zeng, Zhiping et al. "High-Resolution Lensless Microscopy Imaging Based on Fluorescence Intermittency" . | JOURNAL OF BIOPHOTONICS 18 . 9 (2025) . |
| APA | Zeng, Zhiping , Chen, Xinyi , Xu, Biqing , Qiu, Jin , Huang, Yantang , Xu, Canhua . High-Resolution Lensless Microscopy Imaging Based on Fluorescence Intermittency . | JOURNAL OF BIOPHOTONICS , 2025 , 18 (9) . |
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With the increasing demand for temperature sensing and fluorescent anti-counterfeiting applications, there is an urgent need to develop new environmentally friendly materials with multi-peak fluorescence and high stability. In this study, Cs2NaErCl6: Yb3+, Dy3+ double perovskite microcrystals (MCs) are successfully synthesized via a simple 'dissolve-dry' method. The fluorescence intensity ratio technique is employed to assess the temperature sensing performance of these samples, achieving maximum relative sensitivity are 3.27 %/K (up-conversion) and 1.23 %/K (down-conversion), respectively. Because these MCs presents yellow or green emission colors under different excitation, we design an advanced anti-counterfeiting pattern based on the MCs, which greatly improving the security of anti-counterfeiting. The above results show that the sample is dual-mode temperature sensing materials with high sensitivity. In addition, it has great application prospects in dual-mode fluorescent anti-counterfeiting. © 2025 Elsevier B.V.
Keyword ：
Microcrystals Microcrystals Thermocouples Thermocouples
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| GB/T 7714 | Gong, Chenglin , Lin, Lin , Wu, Yingzhen et al. Dual-mode temperature sensing and fluorescent anti-counterfeiting utilizing Cs2NaErCl6: Yb3+, Dy3+ double perovskite microcrystals [J]. | Journal of Luminescence , 2025 , 284 . |
| MLA | Gong, Chenglin et al. "Dual-mode temperature sensing and fluorescent anti-counterfeiting utilizing Cs2NaErCl6: Yb3+, Dy3+ double perovskite microcrystals" . | Journal of Luminescence 284 (2025) . |
| APA | Gong, Chenglin , Lin, Lin , Wu, Yingzhen , Zhang, Yanan , Chen, Xin , Feng, Zhuohong et al. Dual-mode temperature sensing and fluorescent anti-counterfeiting utilizing Cs2NaErCl6: Yb3+, Dy3+ double perovskite microcrystals . | Journal of Luminescence , 2025 , 284 . |
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Optical microcavity can confine photons to a tiny scale for a long time, and is an integrated, low-loss, small mode volume resonant cavity. The resonant frequency of WGM microcavities can be tuned by changing the refractive index and size of the cavity.Based on previous research, this paper proposes a micro-mushroom-shaped microcavity and illustrates the preparation method and characteristics of optical micro-mushroom cavities made of quartz materials. Through the photo-thermal effect, heated light was injected in along the handle of the micro-mushroom cavity, and the frequency tuning of the micro-cavity was thus achieved through the photo-thermal-optical conversion. © 2024 SPIE.
Keyword ：
Microcavities Microcavities Natural frequencies Natural frequencies Refractive index Refractive index
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| GB/T 7714 | Liao, Songsong , Tu, Bifeng , Xu, Huiyang et al. All-optical tuned optical micro-mushroom cavity resonance wavelength [C] . 2024 . |
| MLA | Liao, Songsong et al. "All-optical tuned optical micro-mushroom cavity resonance wavelength" . (2024) . |
| APA | Liao, Songsong , Tu, Bifeng , Xu, Huiyang , Feng, Baihe , Huang, Yantang . All-optical tuned optical micro-mushroom cavity resonance wavelength . (2024) . |
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According to the principle of blackbody radiation, the experimental exploration of high temperature optical fiber temperature sensor was carried out. The high temperature resistant calcium tungstate material was used as the blackbody radiation material to be made the optical fiber radiation probe. Optical power meter was used to measure the optical power of 980nm wavelength in every 10°C in the range of 150-800°C. The fourth-order polynomial was used to fit the relationship between the radiation optical power and the temperature, and the fourth-order optical power and temperature expression with a fitting degree of 0.99953 was obtained. The temperature measurement accuracy was within 1 % in the temperature range of 400-800 ℃. © 2024 SPIE.
Keyword ：
Heat radiation Heat radiation Optical fibers Optical fibers Temperature measurement Temperature measurement Temperature sensors Temperature sensors Tungsten compounds Tungsten compounds
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| GB/T 7714 | He, Pengyu , Wu, Luzhu , Liu, Huiyuan et al. High temperature optical fiber temperature sensor based on blackbody thermal radiation [C] . 2024 . |
| MLA | He, Pengyu et al. "High temperature optical fiber temperature sensor based on blackbody thermal radiation" . (2024) . |
| APA | He, Pengyu , Wu, Luzhu , Liu, Huiyuan , Feng, Baihe , Huang, Yantang . High temperature optical fiber temperature sensor based on blackbody thermal radiation . (2024) . |
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In this work, a ligand-free luminescent hydrogel is used as a visual ratiometric fluorescence sensor to detect rareearth (RE) ions for the first time. This hydrogel is easy to be prepared, environmentally friendly, and has high luminescent efficiency. It is found that the fluorescence intensity and emission color of the hydrogel immediately change significantly when solution of active RE3+ 3 + ions is added without any treatment. According to the linear relationship between the fluorescence intensity ratio and the concentration of RE3+ 3 + solutions, the detection limit is calculated to be as low as 0.94 mu M. The detection of RE ions has strong anti-interference to other ions. Therefore, this sensor can be used for preliminary field exploration of RE ores and detection of waste containing small amounts of RE ions.
Keyword ：
Fluorescence sensor Fluorescence sensor Ligand-free hydrogel Ligand-free hydrogel Rare-earth ions Rare-earth ions Visual detection Visual detection
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| GB/T 7714 | Zhang, Yanan , Lin, Lin , Wu, Yingzhen et al. A ligand-free hydrogel as a visual fluorescence sensor for detection of rare-earth ions [J]. | OPTICS COMMUNICATIONS , 2024 , 570 . |
| MLA | Zhang, Yanan et al. "A ligand-free hydrogel as a visual fluorescence sensor for detection of rare-earth ions" . | OPTICS COMMUNICATIONS 570 (2024) . |
| APA | Zhang, Yanan , Lin, Lin , Wu, Yingzhen , Gong, Chenglin , Feng, Zhuohong , Wang, Zhezhe et al. A ligand-free hydrogel as a visual fluorescence sensor for detection of rare-earth ions . | OPTICS COMMUNICATIONS , 2024 , 570 . |
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Fluorescence fluctuation-based super-resolution microscopy (FF-SRM) is an economical and widely applicable technique that significantly enhances the spatial resolution of fluorescence imaging by capitalizing on fluorescence intermittency. However, each variant of FF-SRM imaging has inherent limitations. This study proposes a super-resolution reconstruction strategy (synSRM) by synergizing multiple variants of the FF-SRM approach to address the limitations and achieve high-quality and high-resolution imaging. The simulation and experimental results demonstrate that, compared to images reconstructed using single FF-SRM algorithms, by selecting suitable synSRM routes according to various imaging conditions, further improvements of the spatial resolution and image reconstruction quality can be obtained for super-resolution fluorescence imaging. (c) 2024 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
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| GB/T 7714 | Zeng, Zhiping , Xu, Biqing , Qiu, Jin et al. Fluorescence super-resolution microscopy via fluctuation-based multi-route synergy [J]. | BIOMEDICAL OPTICS EXPRESS , 2024 , 15 (10) : 5886-5900 . |
| MLA | Zeng, Zhiping et al. "Fluorescence super-resolution microscopy via fluctuation-based multi-route synergy" . | BIOMEDICAL OPTICS EXPRESS 15 . 10 (2024) : 5886-5900 . |
| APA | Zeng, Zhiping , Xu, Biqing , Qiu, Jin , Chen, Xinyi , Huang, Yantang , Xu, Canhua . Fluorescence super-resolution microscopy via fluctuation-based multi-route synergy . | BIOMEDICAL OPTICS EXPRESS , 2024 , 15 (10) , 5886-5900 . |
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In this paper, Cs2NaErCl6 double perovskites microcrystals (MCs) co-doped with Yb3+ and Bi3+ are successfully synthesized by a simple "dissolving-drying" method. When excited at 379 nm, 808 nm and 980 nm, the MCs show strong red, green and yellow light, respectively, which can be well distinguished by the naked eyes. On this basis, two kinds of systems are designed with doped/undoped MCs for triple-mode fluorescent anti-counterfeiting and information encryption of numbers and characters. The results indicate that our MCs are not only beneficial to the application of fluorescent anti-counterfeiting, but also greatly improve the security of anti-counterfeiting. In addition, we evaluate the temperature sensing performance of these MCs by fluorescence intensity ratio technique. The samples show a high relative sensitivity as 3.8 %/K at 243 K. The results show that the samples have multi-functional applications in the fields of fluorescent anti-counterfeiting and temperature sensing, and this work will broaden the application fields of lead-free double perovskites in fluorescent anti-counterfeiting and temperature sensing.
Keyword ：
Double perovskites Double perovskites Fluorescent anti-counterfeiting Fluorescent anti-counterfeiting High-sensitivity High-sensitivity Microcrystals Microcrystals Temperature sensing Temperature sensing
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| GB/T 7714 | Gong, Chenglin , Lin, Lin , Wu, Yingzhen et al. Triple-mode fluorescent anti-counterfeiting and temperature sensing properties of lead-free double perovskites Cs2NaErCl6: Yb3+ , Bi3+ microcrystals [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2024 , 1008 . |
| MLA | Gong, Chenglin et al. "Triple-mode fluorescent anti-counterfeiting and temperature sensing properties of lead-free double perovskites Cs2NaErCl6: Yb3+ , Bi3+ microcrystals" . | JOURNAL OF ALLOYS AND COMPOUNDS 1008 (2024) . |
| APA | Gong, Chenglin , Lin, Lin , Wu, Yingzhen , Zhang, Yanan , Feng, Zhuohong , Wang, Zhezhe et al. Triple-mode fluorescent anti-counterfeiting and temperature sensing properties of lead-free double perovskites Cs2NaErCl6: Yb3+ , Bi3+ microcrystals . | JOURNAL OF ALLOYS AND COMPOUNDS , 2024 , 1008 . |
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In this research, double perovskite quantum dots Cs 2 AgInCl 6 : Tb 3 + /Sm 3 + /Bi 3 + are synthesized employing a hightemperature thermal injection method. The temperature-dependent emission spectra and the fluorescence decay curves of samples show the quantum dots can be applied to dual-mode temperature sensing employing fluorescence intensity ratio technique (between 656 nm (Sm 3 + ) and 549 nm (Tb 3 + )) and fluorescence lifetime thermometry (549 nm (Tb 3 + )), achieving maximal relative sensitivities of 3.24%/K (351 K) and 0.68%/K (373 K), respectively. This study offers valuable insights into the temperature sensing capabilities of these quantum dots, which shows that these quantum dots are promising high-sensitivity dual-mode temperature sensing materials.
Keyword ：
Dual-mode thermometry Dual-mode thermometry High-sensitivity High-sensitivity Lanthanide Lanthanide Perovskite Perovskite Quantum dots Quantum dots
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| GB/T 7714 | Gong, Chenglin , Lin, Lin , Wu, Yingzhen et al. Double perovskite quantum dots Cs 2 AgInCl 6: Tb 3+/Sm 3+/Bi 3+for dual-mode fluorescence temperature sensing [J]. | MATERIALS RESEARCH BULLETIN , 2024 , 179 . |
| MLA | Gong, Chenglin et al. "Double perovskite quantum dots Cs 2 AgInCl 6: Tb 3+/Sm 3+/Bi 3+for dual-mode fluorescence temperature sensing" . | MATERIALS RESEARCH BULLETIN 179 (2024) . |
| APA | Gong, Chenglin , Lin, Lin , Wu, Yingzhen , Zhang, Yanan , Feng, Zhuohong , Wang, Zhezhe et al. Double perovskite quantum dots Cs 2 AgInCl 6: Tb 3+/Sm 3+/Bi 3+for dual-mode fluorescence temperature sensing . | MATERIALS RESEARCH BULLETIN , 2024 , 179 . |
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In this paper, a very simple method was used to synthesize ligand-free luminous hydrogels doped with Tb3+ and Eu3+. The hydrogels exhibit red (615 nm), green (544 nm) and blue (425 nm) emissions derived from Tb-3, Eu3+ and defects, respectively. Effective energy transfer from Tb3+ to Eu3+ is observed. We apply these ligand-free luminous hydrogels for temperature sensing for the first time. In surprise, the relative sensitivities are all very high (>2 %/K) by using many kinds of fluorescence intensity ratios. In addition, with the increase of temperature, the emission color of the samples changes significantly (from orange-red to blue) which can be applied for visual temperature sensing. The above results infer that the ligand-free luminous hydrogels can be used as an eco-friendly visual temperature sensing material.
Keyword ：
High-sensitive High-sensitive Ligand-free Ligand-free Luminous hydrogel Luminous hydrogel Rare earth Rare earth Temperature sensing Temperature sensing
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| GB/T 7714 | Zhang, Yanan , Lin, Lin , Wu, Yingzhen et al. Visual high-sensitive temperature sensing of a novel rare-earth doped ligand-free luminous hydrogel [J]. | OPTICAL MATERIALS , 2024 , 155 . |
| MLA | Zhang, Yanan et al. "Visual high-sensitive temperature sensing of a novel rare-earth doped ligand-free luminous hydrogel" . | OPTICAL MATERIALS 155 (2024) . |
| APA | Zhang, Yanan , Lin, Lin , Wu, Yingzhen , Zhang, Mingze , Ma, Wenjun , Ju, Niuniu et al. Visual high-sensitive temperature sensing of a novel rare-earth doped ligand-free luminous hydrogel . | OPTICAL MATERIALS , 2024 , 155 . |
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