3D PRINTED DIFFRACTION GRATINGS DROP COATED BY DIFFERENT RESINS AND THEIR MECHANISM

IF 2.4 3区 工程技术 Q3 ENGINEERING, MANUFACTURING Journal of Manufacturing Science and Engineering-transactions of The Asme Pub Date : 2023-08-09 DOI:10.1115/1.4063137
Junyu Hua, Yujie Shan, Shaocheng Wu, Huachao Mao
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Abstract

3D-printed blocks with drop coating could work as diffraction gratings while the layer stepping serves as the grooves of the gratings. The paper reports 3D-printed diffraction gratings coated with different resins. A collimated laser with a wavelength of 520 nm passed through the gratings and generated diffraction patterns. Optical path differences and surface profiles of the samples were measured to analyze the mechanism of the diffraction phenomenon. The as-printed samples had a grating height of about 8 μm induced by layer stepping, which could not generate clear diffraction patterns because of too large optical path difference. After being coated with different resins on the surfaces, the printed samples generated diffraction patterns. We experimentally showed that the magnitude of optical path differences became close to the wavelength of the laser and that the diffraction phenomenon was mainly caused by the difference in the refractive indices between the as-printed part and the drop-coated part. This novel method enables low-cost 3D printers to fabricate diffractive optical elements for visible light.
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三维打印衍射光栅滴涂不同树脂及其机理
采用水滴涂层的3d打印块可以作为衍射光栅,而分层步进则作为光栅的凹槽。这篇论文报道了涂有不同树脂的3d打印衍射光栅。波长为520nm的准直激光穿过光栅,产生衍射图样。测量了样品的光程差和表面轮廓,分析了衍射现象的机理。由于层进导致的光栅高度约为8 μm,光程差太大,无法产生清晰的衍射图样。在表面涂上不同的树脂后,打印的样品产生了衍射图案。实验表明,光程差的大小接近于激光的波长,衍射现象主要是由打印部分和滴涂部分的折射率差异引起的。这种新方法使低成本的3D打印机能够制造可见光的衍射光学元件。
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来源期刊
CiteScore
6.80
自引率
20.00%
发文量
126
审稿时长
12 months
期刊介绍: Areas of interest including, but not limited to: Additive manufacturing; Advanced materials and processing; Assembly; Biomedical manufacturing; Bulk deformation processes (e.g., extrusion, forging, wire drawing, etc.); CAD/CAM/CAE; Computer-integrated manufacturing; Control and automation; Cyber-physical systems in manufacturing; Data science-enhanced manufacturing; Design for manufacturing; Electrical and electrochemical machining; Grinding and abrasive processes; Injection molding and other polymer fabrication processes; Inspection and quality control; Laser processes; Machine tool dynamics; Machining processes; Materials handling; Metrology; Micro- and nano-machining and processing; Modeling and simulation; Nontraditional manufacturing processes; Plant engineering and maintenance; Powder processing; Precision and ultra-precision machining; Process engineering; Process planning; Production systems optimization; Rapid prototyping and solid freeform fabrication; Robotics and flexible tooling; Sensing, monitoring, and diagnostics; Sheet and tube metal forming; Sustainable manufacturing; Tribology in manufacturing; Welding and joining
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