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学者姓名：张新平
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摘要 ：
We report a new SERS sensor based on the hybridization of the laser-induced graphene (LIG) and silver nano- particles (AgNPs). LIG was produced by direct laser writing on a PI film. AgNPs were produced on the LIG surface by thermal evaporation of silver. The porous-structured LIG layer increases largely the total surface area of the substrate and supplies delocalized pi bonds for the enhancement of the adsorption of the target molecules to the LIG surface. Furthermore, LIG also provided the chemical enhancement mechanism. The high-density hotspots supplied by AgNPs on the LIG surface in such a hybrid scheme are the main mechanism for the SERS sensing. In particular, strong surface morphology depending on the Ag-deposition thickness and deposition rate enables modification of hydrophobicity of the SERS substrate, which gives additional channels for improving the SERS performance. Theoretical analysis on the distribution of the optical electric field facilitates the determination of the optimized Ag thickness and the deposition rate. These multifold enhancement mechanisms produced a SERS enhancement factor of 3.19 x 10(5), which enables high-sensitivity detection of the banned dyes (CV, MG) in aquatic products. Strong Raman signals were detected with high contrast for a concentration as low as 10(-7)M. This sensor also has potentials for on-site detection in various application circumstances.
关键词 ：
Hydrophobicity Hydrophobicity Detection of banned additives for aquaculture Detection of banned additives for aquaculture Laser-induced graphene Laser-induced graphene Ag nanoparticles Ag nanoparticles Hybrid SERS sensor Hybrid SERS sensor
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| GB/T 7714 | Tao, Guanwei , Li, Jiajun , Zhang, Xinping . Hybrid SERS sensor using Ag nanoparticles on laser-induced graphene for detection of prohibited additives for aquaculture [J]. | APPLIED SURFACE SCIENCE , 2024 , 682 . |
| MLA | Tao, Guanwei 等. "Hybrid SERS sensor using Ag nanoparticles on laser-induced graphene for detection of prohibited additives for aquaculture" . | APPLIED SURFACE SCIENCE 682 (2024) . |
| APA | Tao, Guanwei , Li, Jiajun , Zhang, Xinping . Hybrid SERS sensor using Ag nanoparticles on laser-induced graphene for detection of prohibited additives for aquaculture . | APPLIED SURFACE SCIENCE , 2024 , 682 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Organic lasers based on distributed feedback (DFB) microcavities have been extensively investigated. However, the application of these lasers is limited by their low output power and large beam divergence. Therefore, laser amplifiers are needed to achieve practically applicable laser intensity and controllable lasing modes for far -field applications. In this work, we report self -injection -locked laser amplifiers using the combination of a DFB microcavity and a Bragg reflector, where a high -reflection mirror acts as the Bragg reflector and its feedback supplies the external -cavity injection. The coherent coupling between the DFB microcavity and the Bragg amplifier is crucial for achieving high conversion efficiency and highcontrast transverse modes. An amplification factor larger than 20 and a single output laser spot with high contrast that has been achieved. Such an integration design of the self -injected DFB microcavity amplifier can be directly utilized in the realization of high-performance thin-film laser sources for practical applications.
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| GB/T 7714 | Liu, Yue , Wu, Wenwen , Zhang, Xinping . Self-injection-locked thin-film regenerative laser amplifier [J]. | ISCIENCE , 2024 , 27 (5) . |
| MLA | Liu, Yue 等. "Self-injection-locked thin-film regenerative laser amplifier" . | ISCIENCE 27 . 5 (2024) . |
| APA | Liu, Yue , Wu, Wenwen , Zhang, Xinping . Self-injection-locked thin-film regenerative laser amplifier . | ISCIENCE , 2024 , 27 (5) . |
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摘要 ：
We report a three-dimensional (3D) SERS substrate consisting of a silver nanoparticle (AgNP) coating on the skeleton-fiber surfaces of a polytetrafluoroethylene (PTFE) membrane. Simple thermal evaporation was employed to deposit Ag onto the PTFE membrane to produce grape-shaped AgNPs. The 3D-distributed AgNPs exhibit not only strong localized surface plasmon resonance (LSPR) but also strong hydrophobic performance. High-density hotspots via silver nano-grape structures and nanogaps, the large 3D interaction volume, and the large total surface area, in combination with the hydrophobic enrichment of the specimen, facilitate high-sensitivity sensing performance of such a SERS substrate for the direct detection of low-concentration molecules in water. An enhancement factor of up to 1.97 x 1010 was achieved in the direct detection of R6G molecules in water with a concentration of 10-13 mol/L. The lowest detection limit of 100 ppt was reached in the detection of melamine in water. Such a SERS sensor may have potential applications in food-safety control, environmental water pollution monitoring, and biomedical analysis.
关键词 ：
three-dimensional three-dimensional ultra-sensitive detection ultra-sensitive detection hydrophobic hydrophobic SERS sensors SERS sensors PTFE membranes PTFE membranes aqueous solutions aqueous solutions
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| GB/T 7714 | Tao, Guanwei , Li, Jiajun , Mu, Yunyun et al. A Three-Dimensional Hydrophobic Surface-Enhanced Raman Scattering Sensor via a Silver-Coated Polytetrafluoroethylene Membrane for the Direct Trace Detection of Molecules in Water [J]. | BIOSENSORS-BASEL , 2024 , 14 (2) . |
| MLA | Tao, Guanwei et al. "A Three-Dimensional Hydrophobic Surface-Enhanced Raman Scattering Sensor via a Silver-Coated Polytetrafluoroethylene Membrane for the Direct Trace Detection of Molecules in Water" . | BIOSENSORS-BASEL 14 . 2 (2024) . |
| APA | Tao, Guanwei , Li, Jiajun , Mu, Yunyun , Zhang, Xinping . A Three-Dimensional Hydrophobic Surface-Enhanced Raman Scattering Sensor via a Silver-Coated Polytetrafluoroethylene Membrane for the Direct Trace Detection of Molecules in Water . | BIOSENSORS-BASEL , 2024 , 14 (2) . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
This paper reports transient dynamics of strong near-field coupling behavior of plasmons in a multilayer metal nanostructure that enables ultrahigh-efficient optical switching. Particle plasmon on the top array units couples with localized/delocalized plasmons on the bottom Au film to produce dipolar and high-order hybrid modes with nearly suppressed reflection. The mode coupling can be tuned from near-field to far-field regime readily mediated by the spacer thickness. The dipolar mode inherits the high dispersive property of the delocalized plasmon, but the higher-order one shows limited dispersion. Transient spectroscopy illustrates both hybrid modes have a picosecond timescale redshift under on- and off-resonance excitation. However, the higher-order mode exhibits a longer decay lifetime than the dipolar one because of resonance characteristics and cavity properties. An ultrafast optical switching effect with a response time of tau = 3.2 ps and an ultrahigh efficiency of 5100 mOD mJ-1 cm2 is achieved under an extremely low pump fluence. Transient dynamics of strongly coupled plasmons in a multilayer metal nanostructure are investigated using pump-probe spectroscopy. Particle plasmon has strong near-field coupling with film plasmons to produce dipolar and high-order hybrid modes. The high-order mode decays more slowly than the dipole one but shows a similar redshift behavior under on- and off-resonance excitation, which can be exploited for ultrafast and ultrahigh-efficient optical switching. image
关键词 ：
hybrid plasmons hybrid plasmons ultrafast dynamics ultrafast dynamics near-field coupling near-field coupling optical switching optical switching
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| GB/T 7714 | Lin, Yuanhai , Fan, Lufang , Jiang, Maojie et al. Ultrafast Dynamics of Strong Near-Field Coupled Localized and Delocalized Surface Plasmons [J]. | ADVANCED OPTICAL MATERIALS , 2024 , 12 (18) . |
| MLA | Lin, Yuanhai et al. "Ultrafast Dynamics of Strong Near-Field Coupled Localized and Delocalized Surface Plasmons" . | ADVANCED OPTICAL MATERIALS 12 . 18 (2024) . |
| APA | Lin, Yuanhai , Fan, Lufang , Jiang, Maojie , Wang, Danqing , He, Jianfang , Fu, Yulan et al. Ultrafast Dynamics of Strong Near-Field Coupled Localized and Delocalized Surface Plasmons . | ADVANCED OPTICAL MATERIALS , 2024 , 12 (18) . |
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摘要 ：
The band gap is a key parameter in semiconductor materials that is essential for advancing optoelectronic device development. Accurately predicting band gaps of materials at low cost is a significant challenge in materials science. Although many machine learning (ML) models for band gap prediction already exist, they often suffer from low interpretability and lack theoretical support from a physical perspective. In this study, we address these challenges by using a combination of traditional ML algorithms and the 'white-box' sure independence screening and sparsifying operator (SISSO) approach. Specifically, we enhance the interpretability and accuracy of band gap predictions for binary semiconductors by integrating the importance rankings of support vector regression (SVR), random forests (RF), and gradient boosting decision trees (GBDT) with SISSO models. Our model uses only the intrinsic features of the constituent elements and their band gaps calculated using the Perdew-Burke-Ernzerhof method, significantly reducing computational demands. We have applied our model to predict the band gaps of 1208 theoretically stable binary compounds. Importantly, the model highlights the critical role of electronegativity in determining material band gaps. This insight not only enriches our understanding of the physical principles underlying band gap prediction but also underscores the potential of our approach in guiding the synthesis of new and valuable semiconductor materials.
关键词 ：
binary semiconductors binary semiconductors machine learning machine learning insightful prediction insightful prediction band gap band gap SISSO SISSO
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| GB/T 7714 | Huo, Sitong , Zhang, Shuqing , Wu, Qilin et al. Feature-Assisted Machine Learning for Predicting Band Gaps of Binary Semiconductors [J]. | NANOMATERIALS , 2024 , 14 (5) . |
| MLA | Huo, Sitong et al. "Feature-Assisted Machine Learning for Predicting Band Gaps of Binary Semiconductors" . | NANOMATERIALS 14 . 5 (2024) . |
| APA | Huo, Sitong , Zhang, Shuqing , Wu, Qilin , Zhang, Xinping . Feature-Assisted Machine Learning for Predicting Band Gaps of Binary Semiconductors . | NANOMATERIALS , 2024 , 14 (5) . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
White light-emitting low-dimensional organic-inorganic hybrid lead halide perovskite materials have been considered as candidates for next generation of light sources because of the potential in daily lighting acting as white light emitters or phosphors. However, due to the instability of perovskite materials in water, the underwater application scenario has not been well developed. In this work, we report a method employing an ultraviolet (UV)-polymerizable acrylic monomer to wrap a low dimensional white light emitting perovskite single crystal ([DMEDA]PbBr4) powders in the polymer matrix. We investigate the exciton dynamics in this composite material by transient absorption spectra. More importantly, white light-emitting devices (WLEDs) are manufactured employing this composite material as phosphor excited by UV-LED. Thanks to the protection of the polymer matrix, the stability against the water of this WLED is very good allowing the devices to work underwater for many days. This strategy in this work illustrates a facile way for the application of white light emitting low dimensional perovskite single crystals in WLEDs.
关键词 ：
photopolymer photopolymer Light emitting diodes Light emitting diodes Excitons Excitons perovskite single crystal perovskite single crystal white light-emitting devices (WLEDs) white light-emitting devices (WLEDs) water resistance water resistance [DMEDA]PbBr4 [DMEDA]PbBr4 Absorption Absorption Perovskites Perovskites Polymers Polymers Composite materials Composite materials Crystals Crystals
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| GB/T 7714 | Zhang, Yiwei , Chen, Shuang , Tong, Peige et al. Low-Dimensional Perovskite in Acrylic Monomers for Underwater White LED [J]. | IEEE TRANSACTIONS ON ELECTRON DEVICES , 2024 , 71 (6) : 3727-3731 . |
| MLA | Zhang, Yiwei et al. "Low-Dimensional Perovskite in Acrylic Monomers for Underwater White LED" . | IEEE TRANSACTIONS ON ELECTRON DEVICES 71 . 6 (2024) : 3727-3731 . |
| APA | Zhang, Yiwei , Chen, Shuang , Tong, Peige , Wang, Jing , Fu, Yulan , Guo, Jinxin et al. Low-Dimensional Perovskite in Acrylic Monomers for Underwater White LED . | IEEE TRANSACTIONS ON ELECTRON DEVICES , 2024 , 71 (6) , 3727-3731 . |
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摘要 ：
We characterized exciton diffusion and dissociation behaviour in two ITIC derivatives non-fullerene acceptors (NFA) by time-resolved spectroscopic methods. The exciton diffusion length was determined to be similar to 26 and similar to 34 nm in ITIC and IT4F. We further examined the dissociation of excitons in those NFA at the acceptor/donor planar heterojunction interfaces by transient absorption measurements, in which efficient charge generation was observed. Finally, we fabricated planar heterojunction solar cells using PM6/NFA bilayer planar heterojunctions; a power conversion efficiency (PCE) of over 7 % for PM6/IT4F bilayers was determined. More importantly, the spin-coating of top layer NFA has negligible influence on the morphology of the PM6 layer, suggesting a clear bilayer interface, rather than a quasi-bilayer structure with a portion of bulk heterojunction. The results suggest that enhanced exciton diffusion length and efficient exciton dissociation and charge generation are elemental characters to realize high PCE planar heterojunction organic solar cells. We established direct linking between the exciton diffusion length and the photocurrent generation in NFA layer by transfer matrix simulation. The large exciton diffusion length in NFAs makes the realization of high efficiency and stable bilayer organic solar cells feasible.
关键词 ：
Charge generation Charge generation Donor/ acceptor bilayer Donor/ acceptor bilayer Power conversion Power conversion Non-fullerene acceptors Non-fullerene acceptors Organic photovoltaics Organic photovoltaics
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| GB/T 7714 | Zhang, Yiwei , Tong, Peige , Chen, Shuang et al. Long exciton diffusion distance and efficient exciton dissociation enable high efficiency planar heterojunction non-fullerene organic solar cells [J]. | MATERIALS TODAY PHYSICS , 2024 , 46 . |
| MLA | Zhang, Yiwei et al. "Long exciton diffusion distance and efficient exciton dissociation enable high efficiency planar heterojunction non-fullerene organic solar cells" . | MATERIALS TODAY PHYSICS 46 (2024) . |
| APA | Zhang, Yiwei , Tong, Peige , Chen, Shuang , Liu, Yifei , Dou, Fei , Guo, Jinxin et al. Long exciton diffusion distance and efficient exciton dissociation enable high efficiency planar heterojunction non-fullerene organic solar cells . | MATERIALS TODAY PHYSICS , 2024 , 46 . |
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摘要 ：
一种二氧化钒纳米颗粒掺杂的高性能光致聚合物薄膜制备及应用，属于薄膜技术领域。按照质量比将丙烯酸酯类单体、交联剂、光引发剂搅拌至均匀状态；将二氧化钒纳米颗粒分散到有机溶剂中，搅拌均匀放置于一密闭容器中在避光条件下抽真空，使有机溶剂甲苯完全挥发得到复合薄膜溶液。将溶液滴涂在石英基片上制备成三明治结构并在紫外光下固化成膜，复合薄膜具有良好的柔韧性，在近红外波段有一个良好的调制，并且薄膜具有快速图案化的特点，在智能窗和红外防伪领域有很高的应用价值。
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| GB/T 7714 | 郭金鑫 , 韩煜 , 张莉莎 et al. 一种二氧化钒纳米颗粒掺杂的高性能光致聚合物薄膜制备及应用 : CN202310023380.X[P]. | 2023-01-07 . |
| MLA | 郭金鑫 et al. "一种二氧化钒纳米颗粒掺杂的高性能光致聚合物薄膜制备及应用" : CN202310023380.X. | 2023-01-07 . |
| APA | 郭金鑫 , 韩煜 , 张莉莎 , 张新平 , 张一伟 . 一种二氧化钒纳米颗粒掺杂的高性能光致聚合物薄膜制备及应用 : CN202310023380.X. | 2023-01-07 . |
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摘要 ：
一种基于光学检测方法的水凝胶湿度传感器的制备及应用，属于新型传感器领域。将丙烯酰胺单体按一定比例掺杂在丙烯酸酯类水凝胶中，采用紫外光引发聚合的方式实现共聚，可以提高水凝胶的溶胀率。基于纳米压印技术，通过“两步转印法”制备了高质量的水凝胶光栅。所述水凝胶光栅可以采取光学检测的方法对湿度进行传感检测。本发明开发了一种快速简易可控的水凝胶光栅制备技术，成本低廉；所制备的水凝胶光栅湿度传感器具有高的响应灵敏度、良好的线性度、可调的响应范围以及好的可重复性，在生物传感、环境监测等方面具有良好的实用性和发展前景。
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| GB/T 7714 | 郭金鑫 , 张莉莎 , 韩煜 et al. 一种基于光学检测方法的水凝胶湿度传感器的制备及应用 : CN202310042618.3[P]. | 2023-01-28 . |
| MLA | 郭金鑫 et al. "一种基于光学检测方法的水凝胶湿度传感器的制备及应用" : CN202310042618.3. | 2023-01-28 . |
| APA | 郭金鑫 , 张莉莎 , 韩煜 , 张新平 , 张一伟 . 一种基于光学检测方法的水凝胶湿度传感器的制备及应用 : CN202310042618.3. | 2023-01-28 . |
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摘要 ：
一种二氧化钒纳米颗粒掺杂的高性能光致聚合物光子晶体薄膜材料及制备方法，属于薄膜技术领域。针对目前二氧化钒自支撑薄膜制备的方法较为繁琐、光子晶体结构制备复杂和成本较高等问题，提出了基于转印法的钨掺杂二氧化钒光致聚合物复合薄膜光子晶体结构快速制备工艺。按照质量比将丙烯酸酯类单体、交联剂、光引发剂搅拌至均匀状态；将二氧化钒纳米颗粒分散到有机溶剂中，搅拌均匀放置于一密闭容器中在避光条件下抽真空，使有机溶剂甲苯完全挥发得到复合薄膜溶液。将光刻法和模板转印法相结合，在365nm的紫外光催化下发生光化学反应生成掺杂二氧化钒纳米颗粒的光致聚合物光子晶体薄膜。
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| GB/T 7714 | 郭金鑫 , 韩煜 , 张莉莎 et al. 一种二氧化钒纳米颗粒掺杂的高性能光致聚合物光子晶体薄膜材料及制备方法 : CN202310037311.4[P]. | 2023-01-07 . |
| MLA | 郭金鑫 et al. "一种二氧化钒纳米颗粒掺杂的高性能光致聚合物光子晶体薄膜材料及制备方法" : CN202310037311.4. | 2023-01-07 . |
| APA | 郭金鑫 , 韩煜 , 张莉莎 , 张新平 , 张一伟 . 一种二氧化钒纳米颗粒掺杂的高性能光致聚合物光子晶体薄膜材料及制备方法 : CN202310037311.4. | 2023-01-07 . |
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