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学者姓名：陈继民
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Abstract ：
In this study, highly loaded tin oxide-based (SnO2-based) porous electrodes were prepared by digital light processing (DLP) 3D printing technology. Firstly, the SnO2 light-cured slurry was prepared. The curing process and heat treatment process were analyzed and optimized. Then the best process parameters were obtained. Antimony oxide (Sb2O3) was selected as the conductive agent to improve the electrical con-ductivity of the SnO2-based electrode. Through the characterization of resistivity, SEM and XRD, the op-timum doping amount of conductive agent Sb2O3 was determined to be 6 wt. %. Three kinds of porous electrodes with different shapes were prepared by DLP 3D printing, and the printing accuracy and me-chanical properties were characterized. The results showed that the forming dimension error was about 1.7 % in the X and Y direction, 2.3 % in the Z direction. And the average compressive strength was 18.1 MPa, which effectively ensured the shape integrity and mechanical stability of the printed parts. Then the electrochemical properties of DLP 3D printed SnO2-based electrode and conventional coated electrode were tested and compared. The results showed that the 3D printed porous electrode showed lower charge transfer impedance and higher ion diffusion efficiency, and the maximum charge transfer impedance could be reduced to 1/25 of the traditional electrode; At the same time, it showed better cycle performance and rate performance, and the capacity retention of the 3D printed porous electrode could be improved by about 29.0 % compared with the traditional electrode. This work shows that high-performance high-load porous electrodes can be accurately prepared by DLP 3D printing, which provides a new strategy for the future development of high-load thick electrodes. (c) 2022 Elsevier B.V. All rights reserved.
Keyword ：
DLP 3D printing DLP 3D printing Doping Doping Porous electrodes Porous electrodes SnO2-based SnO2-based
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| GB/T 7714 | Qi, Guoan , Yao, Haihua , Zeng, Yong et al. Preparation and properties of highly loaded SnO2-based porous electrodes by DLP 3D printing [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2023 , 935 . |
| MLA | Qi, Guoan et al. "Preparation and properties of highly loaded SnO2-based porous electrodes by DLP 3D printing" . | JOURNAL OF ALLOYS AND COMPOUNDS 935 (2023) . |
| APA | Qi, Guoan , Yao, Haihua , Zeng, Yong , Chen, Jimin . Preparation and properties of highly loaded SnO2-based porous electrodes by DLP 3D printing . | JOURNAL OF ALLOYS AND COMPOUNDS , 2023 , 935 . |
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Abstract ：
An implant template with great precision is significantly critical for clinical application. Currently, the application of an immediate implant remains limited by the deviations between the planned and actual achieved positions and long periods required for preparation of implant templates. Material Extrusion (MEX), as one kind of 3D printing method, is well known for its low cost and easy operation. However, the accuracy of the implant template printed by MEX has not been fully researched. To investigate the accuracy and feasibility of in vitro computer-guided surgery assisted with a MEX printed template, unidentified plaster samples missing a maxillary molar are digitalized. Mimics software (Materialise, Leuven, Belgium) is used for preoperative design. Surgical templates are fabricated by a MEX 3D printer (Lingtong III, Beijing SHINO, Beijing, China). Postoperative CBCT data are obtained after surgical template placement. The differences in positions of X, Y, Z, and dXYZ as well as angulations between the placed and the designed template are measured on labiolingual and mesiodistal planes. The deviations of the planned and the actual outcome in each dimension are observed and analyzed. Data from different samples indicate that the mean deviation of the angle measures approximately 3.640 degrees. For position deviation, the maximum deviation is found in the z-direction and the mean deviation is about 0.365 +/- 0.136 mm. The mean deviation of space Euclidean distance dXYZ is approximately 0.537 +/- 0.123 mm. Implant templates fabricated by MEX present a relatively high accuracy for tooth-supported guide implantation.
Keyword ：
accuracy analysis accuracy analysis fused deposition modeling fused deposition modeling CBCT CBCT 3D printing 3D printing implant template implant template
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| GB/T 7714 | Zhang, Chengyu , Yuan, Yanping , Chen, Jimin . Material Extrusion Based Fabrication of Surgical Implant Template and Accuracy Analysis [J]. | MATERIALS , 2022 , 15 (5) . |
| MLA | Zhang, Chengyu et al. "Material Extrusion Based Fabrication of Surgical Implant Template and Accuracy Analysis" . | MATERIALS 15 . 5 (2022) . |
| APA | Zhang, Chengyu , Yuan, Yanping , Chen, Jimin . Material Extrusion Based Fabrication of Surgical Implant Template and Accuracy Analysis . | MATERIALS , 2022 , 15 (5) . |
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Abstract ：
3D printing technology was introduced into the manufacturing of ceramic components. To obtain a new light-weight multifunctional structure with novel structure and excellent performance, and promote the deep com-bination of additive manufacturing and optimization design, ZrO2(3Y)/Al2O3 hollow lattice structure ceramics with two kinds of high precision and different porosity were prepared by vat photopolymerization in this paper, and the process optimization, microstructure evolution, and performance were studied. The hollow lattice structure with good molding accuracy and porosity of 35 %-55 % was prepared by component design, opti-mization of slurry, degreasing, and sintering process, which effectively avoided the ceramic cracking and collapse caused by resin volatilization. When the Al2O3 content was 6 wt%, dense ZrO2(3Y)/Al2O3 ceramics with grain refinement, excellent microhardness, and fracture toughness were obtained. The relationship between lattice structure and compressive strength was analyzed by simulation and compressive test. The results show that the compressive strength of the two hollow lattice structures decreases with the increase of porosity. The maximum compressive strength of 35 %-face-centered cubic (FCC) hollow lattice structure is 326 MPa, which is significantly higher than that of body-centered cubic (BCC) structure (240 MPa) with the same porosity. The hollow lattice ceramic structure with good comprehensive performance and lightweight will lay a foundation for the application of industrial heat insulation, high temperature catalysis, and purification carrier in the future.
Keyword ：
Mechanical properties Mechanical properties 3D printing 3D printing Analogue simulation Analogue simulation Lattice structure Lattice structure
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| GB/T 7714 | Zhang, Lizheng , Liu, Hao , Yao, Haihua et al. 3D printing of hollow lattice structures of ZrO2(3Y)/Al2O3 ceramics by vat photopolymerization: Process optimization, microstructure evolution and mechanical properties [J]. | JOURNAL OF MANUFACTURING PROCESSES , 2022 , 83 : 756-767 . |
| MLA | Zhang, Lizheng et al. "3D printing of hollow lattice structures of ZrO2(3Y)/Al2O3 ceramics by vat photopolymerization: Process optimization, microstructure evolution and mechanical properties" . | JOURNAL OF MANUFACTURING PROCESSES 83 (2022) : 756-767 . |
| APA | Zhang, Lizheng , Liu, Hao , Yao, Haihua , Zeng, Yong , Chen, Jimin . 3D printing of hollow lattice structures of ZrO2(3Y)/Al2O3 ceramics by vat photopolymerization: Process optimization, microstructure evolution and mechanical properties . | JOURNAL OF MANUFACTURING PROCESSES , 2022 , 83 , 756-767 . |
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Abstract ：
Porous tin oxide-based (SnO2-based) ceramics with lattice structures were prepared by digital light processing (DLP) 3D printing technology. A 57 wt% SnO2-based DLP slurry was prepared by rheological experiments. By optimizing the exposure time, the DLP process for preparing SnO2 based ceramics had better molding accuracy. The printing size error could be controlled at about 1.8%. The degreasing and sintering curves were obtained by thermogravimetric-differential scanning calorimetry (TG-DSC) analysis, and the SnO2-based porous ceramics with porosity of 50%-71% were prepared. The SnO2-based ceramics with high densification could be obtained by sintering at 1300 degrees C for 2 h. The relative density of printed SnO2-based ceramics was about 92%. In this paper, zinc oxide (ZnO) was selected as a sintering additive to promote the densification of SnO2 ceramics. According to the characterization methods of scanning electron microscopy(SEM), X-ray diffraction(XRD), Energy dispersive spectrometer (EDS) and relative density, the optimum doping amount of ZnO was 9 wt%. The influence of pore structure on compressive strength was analyzed by finite element simulation and compressive test. The compressive strength of porous ceramics could be reduced from 1.56 MPa to 0.27 MPa by controlling the porosity of the porous lattice from 50% to 71%. The compressive strength of the solid block was 160 MPa. In this study, the porous SnO2-based ceramics prepared can be used in porous electrodes, lithium-ion batteries, super capacitors, catalysts, sensors and other fields in the future.
Keyword ：
Mechanical properties Mechanical properties SnO2-Based ceramics SnO2-Based ceramics Porous lattice structure Porous lattice structure Densification Densification 3D printing 3D printing
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| GB/T 7714 | Qi, Guoan , Zeng, Yong , Chen, Jimin . Preparation of porous SnO2-based ceramics with lattice structure by DLP [J]. | CERAMICS INTERNATIONAL , 2022 , 48 (10) : 14568-14577 . |
| MLA | Qi, Guoan et al. "Preparation of porous SnO2-based ceramics with lattice structure by DLP" . | CERAMICS INTERNATIONAL 48 . 10 (2022) : 14568-14577 . |
| APA | Qi, Guoan , Zeng, Yong , Chen, Jimin . Preparation of porous SnO2-based ceramics with lattice structure by DLP . | CERAMICS INTERNATIONAL , 2022 , 48 (10) , 14568-14577 . |
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Abstract ：
The fabrication of high-precision scaffolds with excellent biocompatibility for tissue engineering has become a research hotspot. Two-photon polymerization (TPP) can break the optical diffraction limit and is used to fabricate high-resolution three-dimensional (3D) microstructures. In this study, the biological properties, and machinability of photosensitive gelatin methacrylate (GelMA) hydrogel solutions are investigated, and the biocompatibility of 3D scaffolds using a photosensitive GelMA hydrogel solution fabricated by TPP is also evaluated. The biological properties of photosensitive GelMA hydrogel solutions are evaluated by analyzing their cytotoxicity, swelling ratio, and degradation ratio. The experimental results indicate that: (1) photosensitive GelMA hydrogel solutions with remarkable biological properties and processability are suitable for cell attachment. (2) a micro/nano 3D printed scaffold with good biocompatibility is fabricated using a laser scanning speed of 150 mu m/s, laser power of 7.8 mW, layer distance of 150 nm and a photosensitive GelMA hydrogel solution with a concentration of 12% (w/v). Micro/nano additive manufacturing will have broad application prospects in the tissue engineering field.
Keyword ：
micro micro nano 3D printed scaffold nano 3D printed scaffold two-photon polymerization two-photon polymerization femtosecond laser femtosecond laser
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| GB/T 7714 | Yuan, Yanping , Chen, Lei , Shi, Ziyuan et al. Micro/Nanoarchitectonics of 3D Printed Scaffolds with Excellent Biocompatibility Prepared Using Femtosecond Laser Two-Photon Polymerization for Tissue Engineering Applications [J]. | NANOMATERIALS , 2022 , 12 (3) . |
| MLA | Yuan, Yanping et al. "Micro/Nanoarchitectonics of 3D Printed Scaffolds with Excellent Biocompatibility Prepared Using Femtosecond Laser Two-Photon Polymerization for Tissue Engineering Applications" . | NANOMATERIALS 12 . 3 (2022) . |
| APA | Yuan, Yanping , Chen, Lei , Shi, Ziyuan , Chen, Jimin . Micro/Nanoarchitectonics of 3D Printed Scaffolds with Excellent Biocompatibility Prepared Using Femtosecond Laser Two-Photon Polymerization for Tissue Engineering Applications . | NANOMATERIALS , 2022 , 12 (3) . |
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Abstract ：
本发明提供了一种全方位成形梯度功能材料同轴送粉喷嘴，该喷嘴包括激光束通道、同轴送粉装置、保护气体装置、水冷系统、外壁。所述喷嘴整体为锥形，中心设有激光通道，激光束通道外侧设有均匀分布的同轴送粉通道和保护气通道，保护气通道位于同轴送粉通道的外侧。同轴送粉装置分内外两条通道可以同时送2种不同的粉末，气粉由送粉器送入进粉口并快速进入送粉通道中，在载气与重力的共同作用下，气粉从送粉通道喷出后汇聚于激光光束焦点处。水冷系统紧靠外壁为环状腔体，连接有进水口和出水口，具有良好的冷却效果。本发明结构简单、送粉均匀、粉末汇聚性好、利用率高，且有效避免分层成形导致成形层产生裂纹等问题，显著提高了零件的整体性能。
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| GB/T 7714 | 陈继民 , 张立正 , 曾勇 et al. 一种全方位成形梯度功能材料同轴送粉喷嘴 : CN202211140009.3[P]. | 2022-09-20 . |
| MLA | 陈继民 et al. "一种全方位成形梯度功能材料同轴送粉喷嘴" : CN202211140009.3. | 2022-09-20 . |
| APA | 陈继民 , 张立正 , 曾勇 , 孙璎虹 . 一种全方位成形梯度功能材料同轴送粉喷嘴 : CN202211140009.3. | 2022-09-20 . |
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Abstract ：
一种基于3D打印负泊松比结构的高压电系数d31钛酸钡陶瓷的制作方法，属于3D打印技术及压电陶瓷领域。本发明首先是设计反手性负泊松比结构，胞元是由四根杆长为l，高、宽为t的杆，杆间距为d，90°旋转周期排列得到。再将胞元以镜像并4×4阵列的方式得到整体的结构，经过理论推导出结构压电系数放大因子。本发明使用solidworks绘制并导出结构模型，将模型导入CeraFab‑DP软件进行切片处理。本发明浆料主要成分为：钛酸钡微米粉末，光敏树脂预混液，将浆料倒入lithoz打印机树脂槽中开始打印，打印完成后的坯体放入马弗炉中按特定参数脱脂烧结，再经过极化处理，最终得到具有高横向压电系数d31的反手性负泊松比压电陶瓷。
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| GB/T 7714 | 曾勇 , 杜曦晨 , 陈继民 . 一种基于3D打印负泊松比结构的高压电系数d31钛酸钡陶瓷的制作方法 : CN202210201197.X[P]. | 2022-03-02 . |
| MLA | 曾勇 et al. "一种基于3D打印负泊松比结构的高压电系数d31钛酸钡陶瓷的制作方法" : CN202210201197.X. | 2022-03-02 . |
| APA | 曾勇 , 杜曦晨 , 陈继民 . 一种基于3D打印负泊松比结构的高压电系数d31钛酸钡陶瓷的制作方法 : CN202210201197.X. | 2022-03-02 . |
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Abstract ：
In this study, two configurations of alumina (Al2O3) ceramics (hollow lattice structure and solid lattice structure) were prepared by DLP 3D printing technology. When sintered at 1600 degrees C for 4 h, dense alumina ceramics with an average grain size of 4.38 +/- 1.26 mu m can be obtained. The Al2O3 ceramics prepared by DLP process have good forming precision and shape. The dimension error can be controlled about 0.2 mm. The compressive strength of solid block is 572 MPa. The maximum compressive strength of solid lattice (2.0 mm in diameter and 45% in porosity) is 9.70 MPa. The maximum compressive strength of hollow lattice (2.0 mm in diameter, 0.3 mm in thickness and 70% in porosity) is 4.30 MPa. The thermal simulation results show that the temperature of the hollow lattice (diameter 1.2 mm, porosity 76%) with 500 degrees C upper surface transferring to the lower surface is only 88.6 degrees C, which is lower than 133 degrees C of the solid lattice. Hollow lattice structure can effectively reduce heat loss and improve energy efficiency. The hollow lattice structure Al2O3 ceramics formed by DLP technology is expected to be used in industrial thermal insulation applications.
Keyword ：
3D printing 3D printing Mechanical properties Mechanical properties Porous alumina Porous alumina Hollow structure Hollow structure Thermal insulation properties Thermal insulation properties
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| GB/T 7714 | Sun, Lijun , Dong, Peng , Zeng, Yong et al. Fabrication of hollow lattice alumina ceramic with good mechanical properties by Digital Light Processing 3D printing technology [J]. | CERAMICS INTERNATIONAL , 2021 , 47 (18) : 26519-26527 . |
| MLA | Sun, Lijun et al. "Fabrication of hollow lattice alumina ceramic with good mechanical properties by Digital Light Processing 3D printing technology" . | CERAMICS INTERNATIONAL 47 . 18 (2021) : 26519-26527 . |
| APA | Sun, Lijun , Dong, Peng , Zeng, Yong , Chen, Jimin . Fabrication of hollow lattice alumina ceramic with good mechanical properties by Digital Light Processing 3D printing technology . | CERAMICS INTERNATIONAL , 2021 , 47 (18) , 26519-26527 . |
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Abstract ：
The zirconia (ZrO2) ceramic dental implant abutment was prepared by DLP (Digital Light Processing) 3D printing technology. The effect of different heat treatment parameters on the sintering quality of ZrO2 was studied. According to TG-DSC, XRD, Raman, SEM and other characterization methods, it could be determined that best sintering parameter was set at 1450 degrees C for 1.5 h. The final product has a good morphology without holes and other defects, and the relative density is 99.48%. The ZrO2 samples printed in different directions have obvious anisotropy. The three-point bending strength of the sample in the horizontal direction is better than that in the vertical direction, and the strength is 600 MPa. The fatigue load simulation results show that the smaller the pre angle is, the smaller the maximum stress is and the higher the safety factor is.
Keyword ：
Implant abutment Implant abutment Fatigue performance simulation Fatigue performance simulation 3D printing 3D printing DLP DLP Zirconia Zirconia
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| GB/T 7714 | Zhao, Yongtao , Li, Peiran , Dong, Peng et al. Investigation on 3D printing ZrO2 implant abutment and its fatigue performance simulation [J]. | CERAMICS INTERNATIONAL , 2021 , 47 (1) : 1053-1062 . |
| MLA | Zhao, Yongtao et al. "Investigation on 3D printing ZrO2 implant abutment and its fatigue performance simulation" . | CERAMICS INTERNATIONAL 47 . 1 (2021) : 1053-1062 . |
| APA | Zhao, Yongtao , Li, Peiran , Dong, Peng , Zeng, Yong , Chen, Jimin . Investigation on 3D printing ZrO2 implant abutment and its fatigue performance simulation . | CERAMICS INTERNATIONAL , 2021 , 47 (1) , 1053-1062 . |
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Abstract ：
An effective approach is proposed to adjust the surface morphology induced by using a femtosecond laser, including the area and period of rippled structures. The effect of the processing steps and laser polarization on the surface morphology of rippled structures on a titanium surface was experimentally investigated in this study. A processing sequence was designed for two series of femtosecond laser pulses that irradiate a titanium surface, for example, N = 50(0 degrees) + 50(90 degrees). The experimental results show that the area and period of rippled structures can be simultaneously adjusted by following a two-step method. Due to the enhancement of energy absorption and SP-laser coupling of the initial rippled structures, large area surface structures with small periods are fabricated using two series of femtosecond laser pulses with the same polarization direction. By changing the polarization direction of the two series of femtosecond laser pulses, the recording, erasing, and rewriting of subwavelength ripples is achieved. During the rewriting process, material removal and the formation of new ripples simultaneously occur.
Keyword ：
subwavelength ripples subwavelength ripples femtosecond laser femtosecond laser surface morphology surface morphology two-step method two-step method
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| GB/T 7714 | Yuan, Yanping , Guo, Xinyang , Shang, Yitong et al. Adjustment of Subwavelength Rippled Structures on Titanium by Two-Step Fabrication Using Femtosecond Laser Pulses [J]. | APPLIED SCIENCES-BASEL , 2021 , 11 (5) . |
| MLA | Yuan, Yanping et al. "Adjustment of Subwavelength Rippled Structures on Titanium by Two-Step Fabrication Using Femtosecond Laser Pulses" . | APPLIED SCIENCES-BASEL 11 . 5 (2021) . |
| APA | Yuan, Yanping , Guo, Xinyang , Shang, Yitong , Chen, Jimin . Adjustment of Subwavelength Rippled Structures on Titanium by Two-Step Fabrication Using Femtosecond Laser Pulses . | APPLIED SCIENCES-BASEL , 2021 , 11 (5) . |
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