LANGMUIR
·
2023
·
IF 3.9
Guoxu Yu,Yuan Ma,Xuan Li,Bowen Yu,Xinping Zhang,Xuanhe Zhang,Yiqing Chen,Zhenwei Liang,Zuobo Pang,Ding Weng,Lei Chen,Jiadao Wang
Micro/nanospherical lens photolithography (SLPL) constitutes an efficient and precise micro/nanofabrication methodology. It offers advantages over traditional nanolithography approaches, such as cost-effectiveness and ease of implementation. By using micrometer-sized microspheres, SLPL enables the preparation of subwavelength scale features. This technique has gained attention due to its potential applications. However, the SLPL process has a notable limitation in that it mostly produces simple pattern shapes, mainly consisting of circular arrays. There has been a lack of theoretical analysis regarding the possible shapes that can be created. In our experiments, we successfully prepared annular and ring-with-hole pattern shapes. To address this limitation, we applied the Mie scattering theory to systematically analyze and summarize the various patterns that can be obtained through the SLPL process. We also proposed methods to predict and obtain different patterns. This theoretical analysis enhances the understanding of SLPL and expands its potential applications, making it a valuable area for further research.
研究领域:
材料科学
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光学工程
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2021
·Vol. 9
·期 39
·13704-13712
·
IF 7.393
Xinran Fu,Qiying Wang,Jingtao Wang,Zhijian Huang,Xueqian Li,Da Wen,Junyu Fang,Bobo Li,Shuang Zhou,Haixi Zhang
Solution processed perovskite photodetectors have attracted extensive interest in recent years. For future commercialization, highly efficient and stable devices need to be realized. Herein, we demonstrate that by introducing low-cost polystyrene microspheres as light scattering media in a p–i–n perovskite photodetector, enhanced photoelectric conversion rate can be obtained. Based on Mie scattering theory, a theoretical design was firstly executed to calculate the optimized microsphere size and then applied to the fabrication of the detector. After embedding microspheres, the high photocurrent and responsivity under 760 nm incident light illumination (light intensity P = 1.0 mW cm−2) reached 19.05 μA and 0.32 A W−1, respectively, which were nearly twice enhancements in comparison with the pristine device. Similarly, the improvement of detector performance response to 530 nm incident light was observed for the polystyrene microsphere embedded device. The maximum responsivity up to 0.45 A W−1 (P = 1.0 mW cm−2) and on/off ratio up to 104 were achieved. This work provides an effective design and implementation strategy to improve responsivity to specific light illumination for perovskite photodetectors.
研究领域:
材料科学
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光学工程
·
电子工程
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产品关联
DOI
高影响因子
Nanoscale Advances
·
2021
·Vol. 3
·期 24
·6934-6939
·
IF 4.553
Chen Kang,Zhoutao Sun,Xiaohui Fang,Lei Zha,Yu Han,Hongmei Liu,Jinxin Guo,Xinping Zhang
Surface-enhanced Raman scattering (SERS) has been widely used owing to its high sensitivity and rapid response. In particular, 3D SERS-active platforms greatly extend the interaction area and ensure the ability to directly detect trace amounts of molecules in liquids. A silver-coated capillary, with the ability of liquid sampling and light guiding, provides a new platform for high-performance SERS substrates. In this paper, the silver mirror reaction was used for coating silver on the outer wall of the capillary. PDMS was used as a coating material to protect the silver film. Because of the silver coating, Mie scattering and Raman scattering in the liquid channel can be refocused and reflected back which greatly reduces the propagation loss and extends the interaction length. An enhancement factor as high as 108 and a detection limit of 10−10 M of rhodamine 6G in aqueous solution have been achieved. Moreover, the SERS intensity is homogeneous across the end face of the liquid channel, with the relative standard deviation (RSD) value changing within 7%. The large area and high homogeneity greatly reduce the requirement of light coupling precision and liquid injection pressure. Using a common flange optical fiber connector, the capillary can be simply connected and aligned with a multimode fiber with a detection limit of 10−8 M. The experiment results show great potential for the development of an optofluidic integrated system in the future.
研究领域:
光学
·
分析化学
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产品关联
DOI
PubMed
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2025
·
IF 8.9
Tianyi Zhu,Zeyu Ren,Debao Wang,Sudan Zhao,Xue Liu,Wei Fan,Yue-E Miao,Chao Zhang,Tianxi Liu
Polymer aerogels exhibit promise as solar-thermal co-management materials, offering combined thermal insulation and solar scattering characteristics. However, challenges persist in their large-scale preparation and pore structure tailoring. Herein, a polymethylsilsesquioxane interwoven cellulose nanofiber aerogel scaffold with improved interlayer interfaces and tunable pore sizes is prepared via reactive 3D printing. The resulting 3D-printed aerogel scaffold exhibits minimal volume shrinkage during freeze-drying and significantly enhanced interlayer interfaces, demonstrating superior fatigue resistance and impressive environmental resilience. The significantly decreased pore sizes in the aerogel scaffold greatly enhance full solar scattering through the Mie scattering mechanism. Utilized as a hydrophobic and flame-retardant solar–thermal regulatory cooler, the aerogel scaffold demonstrates a solar reflectance of 94.2 % and an atmospheric window emissivity of 95.6 %. The aerogel scaffold achieves a cooling power of 72.2 W m −2 with an average sub-ambient cooling of 5.8 °C under direct sunlight.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
Materials Research Express
·
2025
·Vol. 12
·期 8
·085101
·
IF 2.2
Yao Liu,Jinqiang Zhou,Jianwei Zhang,Jianguo Cheng,Lina Zhan
The attenuation coefficient of ultraviolet UV light is a critical factor influencing the mechanical properties of photocurable ceramics. Aiming to fabricate high-precision and high-performance ZrO2 ceramics, this study systematically investigates the impact of the UV attenuation coefficient on the polymerization kinetics of ZrO2 ceramic slurries. Through linear fitting, the absorption and scattering coefficients of the ZrO2 slurry were determined as 66 cm−1. By integrating the Beer-Lambert law, we further validated how the UV attenuation coefficient affects the variation in C=C double bond conversion within the cured slurry layers. Additionally, based on Mie scattering theory, although the incident energy was 52 mW cm−2 and slice thickness was 50 μm, the curing depth Cd and exposure energy In{E}_{o} is optimal. The ZrO2 ceramic was formed , in which the sintered sample density was 6.02 g cm−3 (99%).
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）