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学者姓名：陈继民
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摘要 ：
Active control over the optical response has been investigated extensively, which is highly required in next-generation photonic devices. Here, we report a core-shell nanostructure combined with the plasmonic nanostructure with an active phase change material, termed as Au@GST, where the individual Au nanoparticle is wrapped by isolated active Ge2Sb2Te5 (GST) tuning medium as the shell. We demonstrate the active control of optical response by the simultaneous control of size and crystallization degree of the phase change shell within each isolated core-shell nanostructure. The hetero-nanostructures are synthesized by direct sputtering of stoichiometric GST on Au nanoparticles with different sizes based on a seeding effect of the metal nanostructures. The tunable optical response is enabled by inducing the GST shell phase states between amorphous and crystalline phases through thermal annealing, accompanied by high optical contrast. We demonstrate the tunable optical response (from 570 to 630 nm) of the hetero-nanostructures by tailoring the GST shell's optical property. The experimental results show that the optical response of the Au@GST core-shell hetero-nanostructures exhibits high sensitivity to the size of the nanoparticles (GST thickness and Au diameter). The simulation results are in good agreement with the experiments. This confirms the dominant role of the phase states on the optical modulation. Furthermore, this study provides a single-step and lithography-free 3D printing process to arrange the hybrid Au@GST core-shell nanostructures in a large area deliberately, giving additional flexibility to control over the architecture and geometry. Such Au@GST core-shell hetero-nanostructures have the potential for active control of nanophotonic devices, such as super-resolution imaging and programmable metasurfaces.
关键词 ：
Au@GST core-shell hetero-nanostructures Au@GST core-shell hetero-nanostructures phase change materials phase change materials surface plasmon plasmons surface plasmon plasmons tunable optical response tunable optical response
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| GB/T 7714 | Li, Dongfang , Han, Weina , Yuan, Yanping et al. Tunable Optical Response Based on Au@GST Core-Shell Hetero-nanostructures [J]. | ACS APPLIED NANO MATERIALS , 2021 , 4 (9) : 9123-9131 . |
| MLA | Li, Dongfang et al. "Tunable Optical Response Based on Au@GST Core-Shell Hetero-nanostructures" . | ACS APPLIED NANO MATERIALS 4 . 9 (2021) : 9123-9131 . |
| APA | Li, Dongfang , Han, Weina , Yuan, Yanping , Zhao, Yan , Cheng, Zhaochen , Chen, Jimin . Tunable Optical Response Based on Au@GST Core-Shell Hetero-nanostructures . | ACS APPLIED NANO MATERIALS , 2021 , 4 (9) , 9123-9131 . |
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摘要 ：
多孔氧化铝陶瓷具有耐高温、耐腐蚀、低热导率等众多优异的性能,在工业隔热领域的需求持续增加。采用数字光处理(DLP)3D打印技术制备了实心点阵和空心点阵2种不同构型的氧化铝陶瓷坯体,在1550℃的最佳烧结温度下保温4 h烧结出性能稳定的氧化铝陶瓷。结果表明,实心点阵比空心点阵具有更大的抗压强度,实心点阵的最大抗压强度为4.80 MPa。空心点阵的最大抗压强度为1.59 MPa。力学测试结果与力学模拟仿真结果具有一致性。DLP技术成形的空心点阵结构氧化铝陶瓷将来可用于工业隔热应用领域。
关键词 ：
隔热性能 隔热性能 3D打印 3D打印 空心结构 空心结构 多孔氧化铝 多孔氧化铝 力学性能 力学性能
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| GB/T 7714 | 孙立君 , 董鹏 , 曾勇 et al. 3D打印空心点阵结构氧化铝陶瓷及其性能 [J]. | 硅酸盐学报 , 2021 , 49 (09) : 1853-1860 . |
| MLA | 孙立君 et al. "3D打印空心点阵结构氧化铝陶瓷及其性能" . | 硅酸盐学报 49 . 09 (2021) : 1853-1860 . |
| APA | 孙立君 , 董鹏 , 曾勇 , 陈继民 . 3D打印空心点阵结构氧化铝陶瓷及其性能 . | 硅酸盐学报 , 2021 , 49 (09) , 1853-1860 . |
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摘要 ：
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.
关键词 ：
3D printing 3D printing Hollow structure Hollow structure Mechanical properties Mechanical properties Porous alumina Porous alumina 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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摘要 ：
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.
关键词 ：
femtosecond laser femtosecond laser subwavelength ripples subwavelength ripples 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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摘要 ：
The introduction of 3D printing into the manufacturing of ceramic components offers new possibilities to fabricate porous bioceramic scaffold with biomimetic morphology, customized-designed shape and suitable mechanical property for bone tissue engineering. However, most of 3D printed porous ceramic scaffolds are prepared from the array of unit cells, which do not exploit the whole potential of additive manufacturing. In this paper, a novel biomimetic porous beta-tricalcium phosphate (β-TCP) scaffolds with trabecular-like morphology were obtained based on three dimension (3D) Voronoi tessellation method and generated design. This bionic pore structure is fabricated via photopolymer-based digital light processing (DLP) 3D printing technique, a suitable 30 wt% β-TCP ceramic slurry with the addition of adjuvants was prepared. After optimized debinding-sintering process according the TG-DSC analysis, the β-TCP scaffolds showed fully interconnected trabecular-like pore structure with tailorable pore size (360 μm–1200 μm) and porosity (45%–75%) and compact microstructure. Combining compressive tests and finite element analysis (FEA), the relationship between inputting parameters, pore structure and compressive strength is investigated. Thus, the mechanical strength of the trabecular-like β-TCP scaffolds could be predicted and tuned in the initial generated design stage. In addition, the shrinkage ratio and XRD pattern are also detected. The method proposed in this study may provide an efficient bionic design intended for tissue engineering applications. © 2021 Elsevier Ltd and Techna Group S.r.l.
关键词 ：
3D printers 3D printers Bioceramics Bioceramics Biomechanics Biomechanics Biomimetic processes Biomimetic processes Bionics Bionics Bone Bone Ceramics industry Ceramics industry Compressive strength Compressive strength Fabrication Fabrication Morphology Morphology Pore size Pore size Pore structure Pore structure Scaffolds (biology) Scaffolds (biology) Sintering Sintering Tissue Tissue Transmission control protocol Transmission control protocol
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| GB/T 7714 | Liu, Sida , Chen, Jimin , Chen, Tao et al. Fabrication of trabecular-like beta-tricalcium phosphate biomimetic scaffolds for bone tissue engineering [J]. | Ceramics International , 2021 , 47 (9) : 13187-13198 . |
| MLA | Liu, Sida et al. "Fabrication of trabecular-like beta-tricalcium phosphate biomimetic scaffolds for bone tissue engineering" . | Ceramics International 47 . 9 (2021) : 13187-13198 . |
| APA | Liu, Sida , Chen, Jimin , Chen, Tao , Zeng, Yong . Fabrication of trabecular-like beta-tricalcium phosphate biomimetic scaffolds for bone tissue engineering . | Ceramics International , 2021 , 47 (9) , 13187-13198 . |
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摘要 ：
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.
关键词 ：
3D printing 3D printing DLP DLP Fatigue performance simulation Fatigue performance simulation Implant abutment Implant abutment 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 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
为了解激光对增材制造的影响,综述了增材制造中广泛应用的激光类型,针对每种激光类型分析了增材制造相关的重要参数。此外,对于每种激光器在增材制造中应用存在的优点和限制性进行了剖析。对于每种增材制造方式,介绍了所适用激光器的最新进展。最后,讨论了基于激光技术的增材制造的未来前景。研究表明,CO2和Nd∶YAG激光器仍然是各种激光制造技术的中坚力量;Yb光纤激光器具有更高的平均功率、系统稳定性、高参数可调性和低维护成本等优势,正逐渐替代Nd∶YAG激光器;尽管准分子激光器光束质量相对较低且成本较高,但仍需要其基于高功率紫外激光的增材制造以用于研究目的;基于激光的增材制造必须根据目标性能选择作为增材制造的激光源。
关键词 ：
选择性激光烧结 选择性激光烧结 选择性激光熔化 选择性激光熔化 增材制造 增材制造 直接金属激光烧结 直接金属激光烧结 3D打印 3D打印 立体光固化 立体光固化
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| GB/T 7714 | 陈继民 , 张成宇 . 激光器在增材制造中的应用 [J]. | 航空制造技术 , 2020 , 63 (22) : 42-53 . |
| MLA | 陈继民 et al. "激光器在增材制造中的应用" . | 航空制造技术 63 . 22 (2020) : 42-53 . |
| APA | 陈继民 , 张成宇 . 激光器在增材制造中的应用 . | 航空制造技术 , 2020 , 63 (22) , 42-53 . |
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摘要 ：
1.本外观设计产品的名称：3D打印辅助教学绘板。2.本外观设计产品的用途：用于3D绘图辅助教学。3.本外观设计产品的设计要点：在于形状、图案与色彩的结合。4.最能表明设计要点的图片或照片：主视图。5.请求保护的外观设计包含色彩。
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| GB/T 7714 | 齐国安 , 陈继民 . 3D打印辅助教学绘板 : CN202030460475.5[P]. | 2020-08-13 . |
| MLA | 齐国安 et al. "3D打印辅助教学绘板" : CN202030460475.5. | 2020-08-13 . |
| APA | 齐国安 , 陈继民 . 3D打印辅助教学绘板 : CN202030460475.5. | 2020-08-13 . |
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摘要 ：
一种光固化3D打印泰森多边形仿生结构磷酸三钙/二氧化硅复合生物陶瓷的制备方法属于3D打印陶瓷及仿生结构设计领域。本发明所提供的组合物为：平均粒径30μm‑50μm的磷酸三钙粉末，粒径尺寸≤100nm的二氧化硅粉末，405nm波段光敏树脂，交联剂3, 3‑二甲基丙烯酸树脂，稀释剂聚丙二醇，以一定比例配制得到光固化成型陶瓷浆料。通过打印成型及脱脂烧结过程获得晶粒结合致密、孔隙率在50％‑80％之间可调控、抗压性能在3MPa‑8MPa之间，符合人体松质骨抗压性能要求，并具有仿生人体松质骨结构特性的磷酸三钙/二氧化硅仿生多孔生物陶瓷骨组织工程支架。
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| GB/T 7714 | 陈继民 , 刘思达 . 一种光固化3D打印泰森多边形仿生结构磷酸三钙/二氧化硅复合生物陶瓷的制备方法 : CN202010666127.2[P]. | 2020-07-13 . |
| MLA | 陈继民 et al. "一种光固化3D打印泰森多边形仿生结构磷酸三钙/二氧化硅复合生物陶瓷的制备方法" : CN202010666127.2. | 2020-07-13 . |
| APA | 陈继民 , 刘思达 . 一种光固化3D打印泰森多边形仿生结构磷酸三钙/二氧化硅复合生物陶瓷的制备方法 : CN202010666127.2. | 2020-07-13 . |
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摘要 ：
GNRs can be readily produced by unzipping the nanotubes because CNT structure can be analogically considered as graphene sheets rolled up. This is a special 2D graphitic structure performing the exceptional properties. Due to the unique structure and the outstanding properties, GNRs have been used in a vast range of applications, including transistors, optical and microwave communication devices, biosensors, chemical sensors, electronic memory and processing devices, nano electromechanical systems, and composites. The morphology of the fiilms was observed by scanning electron microscopy (SEM), and the properties of graphene were characterized by Raman spectroscopy. The conductivity of the fiilms was measured by a semiconductor parameter measurement system. Raman spectroscopy showed that the Raman characteristics of graphene characterized by optimized process were enhanced. Laser energy and irradiation time were two important parameters for the preparation of graphene from carbon nanotubes. In this study, to open carbon nanotubes by laser, graphene nanoribbons were produced by excimer laser irradiation of carbon nanotubes thin films. The experimental results show that, with the laser energy 150 mJ, the carbon nanotubes are not opened while the connection is observed. With the energy 450 mJ, the carbon nanotubes can be effectively destroyed, and graphene strips can be partially opened to form. At this time, the conductivity of the fiilm reaches the maximum value. Due to the thermal accumulation effect, a large number of porous structures appear on the wall of carbon nanotubes. Copyright ©2020 Infrared and Laser Engineering. All rights reserved.
关键词 ：
Carbon films Carbon films Carbon nanotubes Carbon nanotubes Composite structures Composite structures Electromechanical devices Electromechanical devices Excimer lasers Excimer lasers Graphene Graphene Graphene nanoribbon Graphene nanoribbon Irradiation Irradiation Microwave sensors Microwave sensors Morphology Morphology Nanoribbons Nanoribbons NEMS NEMS Optical communication Optical communication Raman spectroscopy Raman spectroscopy Scanning electron microscopy Scanning electron microscopy Semiconductor lasers Semiconductor lasers Structural properties Structural properties
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| GB/T 7714 | Liu, Zhi , Chen, Jimin , Li, Dongfang et al. Laser-induced transformation of carbon nanotubes into graphene nanoribbons and their conductive properties [J]. | Infrared and Laser Engineering , 2020 , 49 (9) . |
| MLA | Liu, Zhi et al. "Laser-induced transformation of carbon nanotubes into graphene nanoribbons and their conductive properties" . | Infrared and Laser Engineering 49 . 9 (2020) . |
| APA | Liu, Zhi , Chen, Jimin , Li, Dongfang , Zhang, Chenyu . Laser-induced transformation of carbon nanotubes into graphene nanoribbons and their conductive properties . | Infrared and Laser Engineering , 2020 , 49 (9) . |
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