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学者姓名：林腾飞
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Abstract ：
Piezoelectric materials (PEMs) can convert mechanical energy into electrical energy. Substantial works were performed to optimize PEMs and devices for smart sensing, human monitoring, and medical applications, however, their electromechanical behaviors under such scenarios with different applied frequencies remain unclear. Here, the frequency response behaviors of piezoelectric output current are revealed based on lead-free and lead-based PEMs toward advanced applications. The results show a linear relationship between output current and frequency under short-circuit condition, with the slope varying according to loading force (F) and piezoelectric coefficient (d33). However, when a load resistance (RL) is applied, a nonlinear relationship is shown: the current increases with frequency, reaches a critical point, and subsequently levels off. The saturation current is influenced by F, RL, d33, and device capacitance (C), while the critical frequency is related to RL, C, and action distance. This fundamental behavior of PEMs aligns with Maxwell's displacement current deducing and is wellsupported by circuit simulations and physical modeling. The universality of these results is further confirmed through lead-based PEMs. Open-circuit voltage is unaffected by f, while load voltage exhibits the same nonlinear frequency response as load current. Applying these findings by combining machine learning, human posture monitoring and robot motion recognition were achieved. This work gives a deep understanding of intrinsic frequency response behaviors of electromechanical conversion in PEMs and guides the emerging piezoelectric sensing and monitoring applications.
Keyword ：
Frequency response behaviors Frequency response behaviors Mathematical deducing and circuit simulations Mathematical deducing and circuit simulations Output current Output current Piezoelectric materials Piezoelectric materials Sensing and monitoring applications Sensing and monitoring applications
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| GB/T 7714 | Huang, Xi , Dong, Gaolei , Zhang, Yangdong et al. Decoding the intrinsic frequency response behaviors of piezoelectric output current toward advanced sensing and monitoring applications [J]. | NANO ENERGY , 2025 , 134 . |
| MLA | Huang, Xi et al. "Decoding the intrinsic frequency response behaviors of piezoelectric output current toward advanced sensing and monitoring applications" . | NANO ENERGY 134 (2025) . |
| APA | Huang, Xi , Dong, Gaolei , Zhang, Yangdong , Xu, Wei , Wu, Yourong , Zhao, Chunlin et al. Decoding the intrinsic frequency response behaviors of piezoelectric output current toward advanced sensing and monitoring applications . | NANO ENERGY , 2025 , 134 . |
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The introduction of dynamic covalent bonds into shape memory polymers (SMPs) has offered the possibility of reprocessing, but multifunctional modifications have not been sufficiently investigated. This work reported photoluminescence thermadapt two-way SMPs (2W-SMPs) based on syndiotactic 1,2-polybutadiene (SPB). The ZnS:Cu particles were modified to form beta-hydroxyester dynamic covalent bonds with epoxidized SPB (ESPB), and a dynamic reversible cross-linked network was constructed inside the shape memory polymer. The crystallization-melting characteristics of ESPB and the photoluminescence ability of ZnS:Cu endow the material with two-way shape memory and photoluminescence properties, respectively. Owing to the solid-state plasticity endowed by dynamic covalent bonds, the thermadapt 2W-SMPs can be recycled at high temperatures. In addition, we designed a "gripper" structure via its shape memory ability. The results showed that under variable temperature conditions, this material can successfully grasp objects. Its good photoluminescence effect ensures that the gripper structure can be accurately positioned in a dim environment.
Keyword ：
dynamic covalentbonds dynamic covalentbonds photoluminescence photoluminescence recycling recycling thermadapt thermadapt two-way shape memory polymers two-way shape memory polymers
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| GB/T 7714 | Feng, Wenliang , Xia, Biao , Lin, Tengfei et al. Photoluminescence Thermadapt Two-Way Shape Memory Polymers Based on Syndiotactic 1,2-Polybutadiene with Modified Phosphors [J]. | ACS APPLIED POLYMER MATERIALS , 2025 , 7 (2) : 978-989 . |
| MLA | Feng, Wenliang et al. "Photoluminescence Thermadapt Two-Way Shape Memory Polymers Based on Syndiotactic 1,2-Polybutadiene with Modified Phosphors" . | ACS APPLIED POLYMER MATERIALS 7 . 2 (2025) : 978-989 . |
| APA | Feng, Wenliang , Xia, Biao , Lin, Tengfei , Wu, Wentao , Wei, Junwen , Gao, Min et al. Photoluminescence Thermadapt Two-Way Shape Memory Polymers Based on Syndiotactic 1,2-Polybutadiene with Modified Phosphors . | ACS APPLIED POLYMER MATERIALS , 2025 , 7 (2) , 978-989 . |
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The coordination of multiple luminescent centers in a simple and efficient way is a difficult challenge for realizing the tunable multicolor function of fluorescent hydrogels. In this work, we synthesized a fluorescent hydrogel with multicolor conversion via a "one-pot method," which greatly simplifies the tedious steps of preparing fluorescent hydrogels. The luminescence intensity and color of the synthesized DPA-Eu/TPE@PVA hydrogel can be modulated by various stimuli, such as the excitation wavelength, pH, and presence of Fe3+ ions. The entire work centers on the rational introduction of the light-emitting molecule tetrakis(4-hydroxyphenyl)ethylene (TPE-4OH) and the lanthanide ionic complex 2,6-pyridinedicarboxylic acid-Eu (DPA-Eu) into the poly(vinyl alcohol) (PVA) polymer network. Since the luminescence mechanisms of these two molecules differ, with the former emitting light with the aid of the aggregation-induced emission (AIE) effect and the latter emitting light through energy transfer via metal dynamic coordination bonds, individual luminescent molecules can be controlled independently under specific stimuli. The realization of this tunable multicolor fluorescence function has contributed to its application in fields such as sensors, probes, and information encryption.
Keyword ：
aggregation-induced emission aggregation-induced emission fluorescenthydrogels fluorescenthydrogels informationencryption informationencryption metaldynamic ligand bonds metaldynamic ligand bonds multicolor multicolor rare earth ions rare earth ions stimulus responsiveness stimulus responsiveness
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| GB/T 7714 | Liao, Shijie , Li, Zhou , Ren, Lumin et al. Multicolor Tunable AIE Fluorescent Hydrogels Containing Europium Ionic Complexes via the "One-Pot Method" [J]. | ACS APPLIED POLYMER MATERIALS , 2025 , 7 (2) : 700-709 . |
| MLA | Liao, Shijie et al. "Multicolor Tunable AIE Fluorescent Hydrogels Containing Europium Ionic Complexes via the "One-Pot Method"" . | ACS APPLIED POLYMER MATERIALS 7 . 2 (2025) : 700-709 . |
| APA | Liao, Shijie , Li, Zhou , Ren, Lumin , Lin, Tengfei , Lin, Cong , Zhao, Chunlin et al. Multicolor Tunable AIE Fluorescent Hydrogels Containing Europium Ionic Complexes via the "One-Pot Method" . | ACS APPLIED POLYMER MATERIALS , 2025 , 7 (2) , 700-709 . |
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Electrocaloric cooling based on ferroelectrics is an eco-friendly technology. BaTiO3 (BT)-based ferroelectric ceramics possess a high electrocaloric effect, which is significantly affected by grain size. Herein, fine and large grains' contributions to electrocaloric and related properties in BT-based ceramics are revealed via tuning sintered dwelling time (ts) in discontinuous grain growth (DGG) process with fine and large grains coexistence. With increasing ts, grain size change can be divided into two stages. The main change is the large-grain size (>100–200 μm) and number in the beginning DGG stage, and the properties' evolutions are mainly contributed by large grain change. The bigger grain size of large and fine grains contributes to the higher electrocaloric property, sharper phase transition, ferroelectric polarization (change rate), and coercive field. In the subsequent stage, fine grains gradually grow up (∼4.0–5.0 μm) while large-grain size decreases slightly. Here the properties' evolutions are influenced by the competitive contributions between fine and large grains. Large grain contribution is mainly attributed to the domain size effect, and fine grain contribution should embrace the domain size effect and grain-boundary pinning effect. This work contributes to a broad understanding of fine/large grain contributions in the promising BT-based electrocaloric ceramics. © 2024 Elsevier B.V.
Keyword ：
BaTiO3-based ceramics BaTiO3-based ceramics Discontinuous grain growth Discontinuous grain growth Dwelling time of sintering Dwelling time of sintering Electrocaloric properties Electrocaloric properties Fine and large grain contributions Fine and large grain contributions
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| GB/T 7714 | Huang, X. , Li, H. , Xu, W. et al. Dwelling time influences on discontinuous grain growth and fine/large grain contributions in barium titanate-based electrocaloric ceramics [J]. | Journal of Alloys and Compounds , 2024 , 1004 . |
| MLA | Huang, X. et al. "Dwelling time influences on discontinuous grain growth and fine/large grain contributions in barium titanate-based electrocaloric ceramics" . | Journal of Alloys and Compounds 1004 (2024) . |
| APA | Huang, X. , Li, H. , Xu, W. , Zhao, C. , Wu, X. , Gao, M. et al. Dwelling time influences on discontinuous grain growth and fine/large grain contributions in barium titanate-based electrocaloric ceramics . | Journal of Alloys and Compounds , 2024 , 1004 . |
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Transparent dielectric ceramics with ultrafast discharge rates and gigantic power densities are ideal candidates for transparent pulse capacitors (TPCs). However, the requirement of a high external electric field and inferior temperature stability hinder practical applications. (Bi0.5Na0.5)TiO3-based ceramics exhibit large polarization and two characteristic dielectric peaks, easy to obtain high energy-storage density under low electric fields (low-E) and maintain stable energy-storage performance (ESP) within a wide temperature range. However, their low optical transmittance (T%) limits their development into TPCs. In this work, to concurrently obtain high T% and excellent ESP and stability under low-E conditions, we propose a collaborative optimization strategy for determining the regulations of grain size, bandgap energy and domain structure. The results show that the pellucidity and energy-storage characteristics improve with decreasing grain and domain sizes. A relatively high T% of 45.6 % (at 710 nm) and recoverable energy-storage density (Wrec ∼ 3.46 J cm−3 at 197 kV cm−1) are obtained for the (1-x)[0.85(Bi0.5-3yNa0.5-yYb3yHoyTiO3)-0.15SrZrO3]-xBaHfO3 ceramics. Additionally, the dielectric temperature stability also results in splendid storage temperature stability (ΔWrec/Wrec < 3.1 % in the range of 0–200 °C). Importantly, codoping Ho/Yb in the ceramics induces excellent fluorescence temperature sensing feature. The multifunctional TPCs have application potential in the field of search and rescue signal transmission, providing ideas for developing novel optoelectronic devices. © 2024
Keyword ：
Fluorescence temperature sensing Fluorescence temperature sensing Low-E energy storage Low-E energy storage Relaxor ferroelectrics Relaxor ferroelectrics Thermal stability Thermal stability Transparent ceramics Transparent ceramics
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| GB/T 7714 | Zeng, X. , Jiang, X. , Lin, J. et al. Excellent low-E energy storage and fluorescence temperature sensing features in Bi0.5Na0.5TiO3-based transparent ceramics [J]. | Chemical Engineering Journal , 2024 , 496 . |
| MLA | Zeng, X. et al. "Excellent low-E energy storage and fluorescence temperature sensing features in Bi0.5Na0.5TiO3-based transparent ceramics" . | Chemical Engineering Journal 496 (2024) . |
| APA | Zeng, X. , Jiang, X. , Lin, J. , Lin, Q. , Wang, S. , Wu, Y. et al. Excellent low-E energy storage and fluorescence temperature sensing features in Bi0.5Na0.5TiO3-based transparent ceramics . | Chemical Engineering Journal , 2024 , 496 . |
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Considering the large demand for electricity in the era of artificial intelligence and big data, there is an urgent need to explore novel energy storage media with higher energy density and intelligent temperature self-check functions. High-entropy (HE) ceramic capacitors are of great significance because of their excellent energy storage efficiency and high power density (PD). However, the contradiction between configurational entropy and polarization in traditional HE systems greatly restrains the increase in energy storage density. Herein, the contradiction is effectively solved by regulating the octahedral tilt and cationic displacement in ABO3-type perovskite HE ceramics, i.e., (1-x)[0.6(Bi0.47Na0.47Yb0.03Tm0.01)TiO3-0.4(Ba0.5Sr0.5)TiO3]-xSr(Zr0.5Hf0.5)O3 (BNYTT-BST-xSZH). Combining the tape-casting process and cold isostatic pressing, the optimal BNYTT-BST-0.06SZH ceramic displays a large recoverable energy storage density (10.46 J cm-3) at 685 kV cm-1 and a high PD (332.88 MW cm-3). More importantly, due to Tm/Yb codoping, abnormal fluorescent negative thermal expansion and excellent real-time temperature sensing are developed, thus the application of fault detection and warning in high-voltage transmission line systems is conceptualized. This study provides an effective strategy for enhancing the polarization of energy-storing HE ceramics and offers a promising material for overcoming the problems of insufficient capacitor density and thermal runaway in terminal communication. Herein, octahedral tilt and cationic displacement are observed in high entropy (HE) BNT- based ceramics. On the basis of tape-casting process and cold isostatic pressing, the optimal ceramics display a large Wrec (10.46 J cm-3) at 685 kV cm-1 and a high power density (332.88 MW cm-3). Importantly, Tm/Yb codoping endows the ceramics with fluorescent temperature self-check feature. image
Keyword ：
energy storage ceramics energy storage ceramics fluorescent negative thermal expansion fluorescent negative thermal expansion high-entropy (HE) high-entropy (HE) octahedral tilt octahedral tilt relaxor ferroelectrics relaxor ferroelectrics
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| GB/T 7714 | Zeng, Xiangfu , Lin, Jinfeng , Shen, Jie et al. Giant Capacitive Energy Storage in High-Entropy Lead-Free Ceramics with Temperature Self-Check [J]. | ADVANCED MATERIALS , 2024 , 36 (46) . |
| MLA | Zeng, Xiangfu et al. "Giant Capacitive Energy Storage in High-Entropy Lead-Free Ceramics with Temperature Self-Check" . | ADVANCED MATERIALS 36 . 46 (2024) . |
| APA | Zeng, Xiangfu , Lin, Jinfeng , Shen, Jie , Chen, Yan , Xu, Wei , Tang, Luomeng et al. Giant Capacitive Energy Storage in High-Entropy Lead-Free Ceramics with Temperature Self-Check . | ADVANCED MATERIALS , 2024 , 36 (46) . |
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创新创业教育与专业教育融合是创新人才培养、专业内涵发展和创新创业教育发展的必然要求。针对目前两者融合不够深入的问题，福州大学高分子材料与工程专业从教育理念、师资队伍、课程设置和教学管理等方面进行改革探索，以期实现高质量人才培养目标，为科学研究和区域经济发展提供有力支撑。
Keyword ：
专业教育 专业教育 创新创业教育 创新创业教育 教学改革 教学改革
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| GB/T 7714 | 吕秋丰 , 黄艳 , 林起浪 et al. 创新创业教育与专业教育融合的探索——以福州大学高分子材料与工程专业为例 [J]. | 化工高等教育 , 2024 , 41 (04) : 51-57 . |
| MLA | 吕秋丰 et al. "创新创业教育与专业教育融合的探索——以福州大学高分子材料与工程专业为例" . | 化工高等教育 41 . 04 (2024) : 51-57 . |
| APA | 吕秋丰 , 黄艳 , 林起浪 , 林腾飞 . 创新创业教育与专业教育融合的探索——以福州大学高分子材料与工程专业为例 . | 化工高等教育 , 2024 , 41 (04) , 51-57 . |
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Influences of calcination temperature (T-cal) on discontinuous grain growth (DGG), and related grain size effect on structure/ferroelectric/electrocaloric properties were studied and compared in fine-/large-grain Ba(Ti0.85Zr0.15)O-3 ceramics. DGG phenomena from several to >100 mu m are all observed with rising sintering temperature (T-S). Increasing T-cal (1200-1320 degrees C) can cause larger powders but decrease the sintering activity, leading to a higher critical T-S (1320-1360 degrees C) of DGG. Relatively high T-cal (larger powder size) will lead to smaller ceramic grains and density before DGG, while being prone to obtain larger grains and stronger ferroelectric correlations, but lower density after DGG. The over-sized powders and smaller grains/density will present in ceramics if T-cal closes to critical T-S. In fine- and large-grain ceramics, grain size variation is similar to the evolution of dielectric, ferroelectric polarization, and electrocaloric properties, but shows an opposite variation trend with coercive field and relaxor phase transition. Electrocaloric strength of fine-grain ceramics increases with a rising electric field due to their difficult domain switching, while an opposite trend shows in large-grain ceramics. Finally, higher electrocaloric properties are obtained in ceramics with relatively big grains because of easier polarization rotation, higher polarization, and polarization change rate.
Keyword ：
BaTiO3-based ceramics BaTiO3-based ceramics Calcining temperature Calcining temperature Discontinuous grain growth Discontinuous grain growth Electrocaloric properties Electrocaloric properties Fine- and large-grain size effect Fine- and large-grain size effect
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| GB/T 7714 | Xu, Wei , Huang, Xi , Li, Hong et al. Calcination temperature-associated discontinuous grain size effect on electrocaloric properties in fine-/large-grain BaTiO3-based ferroelectric ceramics [J]. | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY , 2024 , 44 (12) : 7071-7080 . |
| MLA | Xu, Wei et al. "Calcination temperature-associated discontinuous grain size effect on electrocaloric properties in fine-/large-grain BaTiO3-based ferroelectric ceramics" . | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 44 . 12 (2024) : 7071-7080 . |
| APA | Xu, Wei , Huang, Xi , Li, Hong , Lin, Cong , Wu, Xiao , Gao, Min et al. Calcination temperature-associated discontinuous grain size effect on electrocaloric properties in fine-/large-grain BaTiO3-based ferroelectric ceramics . | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY , 2024 , 44 (12) , 7071-7080 . |
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Conventional nanomaterials are met with the bottleneck problem of difficult recycling and reuse when applied to water treatment. Carbon aerogel with three-dimensional structure can effectively solve the problem of recycling, however, the preparation of efficient and recyclable aerogel catalyst is still an urgent technical problem. Here, an NH 2 -MIL-88B(Fe)/agarose carbon aerogel (MGA-x) was synthesized at different calcination temperatures (x = 100, 150, 200 and 300 degrees C) and their changes in structures and photo-electrochemical properties were investigated. As a photo-Fenton catalyst, the aerogel could efficiently activate H 2 O 2 to ultrafast degrade mitoxantrone in water. Within 2 min, the removal efficiency of mitoxantrone in the MGA-200/H 2 O 2 /Light system was 97.6%, which was 85.3 times greater than that in the agarose aerogel/H 2 O 2 /Light system. Notably, the aerogel catalyst could be directly recovered and recycled without additional treatments, and the microstructure and degradation performance were maintained even after five cycles, demonstrating excellent sustainability for applications in practical aquatic environment. The primary active radicals involved in the photocatalytic degradation process were center dot OH, h + and center dot O 2 - , which were confirmed through free radical quenching experiments and electron paramagnetic resonance analysis. Additionally, possible degradation pathways for mitoxantrone were proposed based on the results of liquid chromatography-mass spectrometry. This study presents a photocatalytic aerogel with highly efficient degradation ability along with recycling and reuse capacity, exhibiting great potential for application in the remediation of water pollution.
Keyword ：
Aerogel Aerogel Energy band gap Energy band gap Mitoxantrone Mitoxantrone Photo-Fenton Photo-Fenton Sustainable Sustainable
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| GB/T 7714 | Wu, Yourong , Cai, Wanqian , Zhong, Shiqi et al. Sustainable NH 2-MIL-88B(Fe)/agarose carbon aerogel as a photo-Fenton catalyst for ultrafast degrading mitoxantrone [J]. | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2024 , 12 (4) . |
| MLA | Wu, Yourong et al. "Sustainable NH 2-MIL-88B(Fe)/agarose carbon aerogel as a photo-Fenton catalyst for ultrafast degrading mitoxantrone" . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 12 . 4 (2024) . |
| APA | Wu, Yourong , Cai, Wanqian , Zhong, Shiqi , Lin, Cong , Lin, Mei , Lin, Tengfei et al. Sustainable NH 2-MIL-88B(Fe)/agarose carbon aerogel as a photo-Fenton catalyst for ultrafast degrading mitoxantrone . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2024 , 12 (4) . |
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Photoferroelectrics that involve strong light-matter coupling are regarded as promising candidates for realizing bulk photovoltaic and photoelectric effects via light absorption. Nonetheless, understanding the photoresponse mechanism or modulation of performance from a microscopic point of view is scarcely explored through quantification of macroscopic properties. Herein, we design a model material, Gd3+-doped (K0.5Na0.5)NbO3 ferroelectric-transparent ceramics, and present an advantageous strategy to enhance the optoelectronic coupling through joint modulations of lattice distortion and oxygen vacancies, along with inner defects and ferroelectric domains. Significantly, their microcosmic manipulation can be intuitively and facilely evaluated by the optical transparency of each ceramic. An approximately 10(4) fold increase in conductivity under ultraviolet irradiation was produced. Under the cocoupling between external physical fields, the synergy of photoelectric stimulation increased the photoconductivity of the ceramics by 13.89 times. Additionally, a significant increase (4.5-fold) in the current output from the photovoltaic effect was achieved via ferroelectric domains of moderate size, whose size could be easily assessed by optical transmittance. In situ microscopic observations confirmed that the configuration of oxygen vacancy-dependent ferroelectric domains contributes to the enhanced optoelectronic response. This research provides a distinct way to develop inexpensive optocoupler devices and meet the requirements for multifunctional integration in single photoferroelectrics.
Keyword ：
ferroelectric domains ferroelectric domains oxygen vacancies oxygen vacancies photoferroelectrics photoferroelectrics potassium-sodium niobate potassium-sodium niobate transparent ceramics transparent ceramics
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| GB/T 7714 | Wu, Xiao , Wang, Peng , Jiang, Xingan et al. Photoconductivity and Photovoltaic Effect Strengthened via Microstructural Cotuning in Ferroelectrics: Intuitively Assessed by Macroscopic Transparency [J]. | ACS APPLIED MATERIALS & INTERFACES , 2024 , 16 (41) : 55760-55770 . |
| MLA | Wu, Xiao et al. "Photoconductivity and Photovoltaic Effect Strengthened via Microstructural Cotuning in Ferroelectrics: Intuitively Assessed by Macroscopic Transparency" . | ACS APPLIED MATERIALS & INTERFACES 16 . 41 (2024) : 55760-55770 . |
| APA | Wu, Xiao , Wang, Peng , Jiang, Xingan , Cao, Shuyao , Lin, Jinfeng , Xiong, Rui et al. Photoconductivity and Photovoltaic Effect Strengthened via Microstructural Cotuning in Ferroelectrics: Intuitively Assessed by Macroscopic Transparency . | ACS APPLIED MATERIALS & INTERFACES , 2024 , 16 (41) , 55760-55770 . |
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