TY - JOUR
T1 - Generation of high-saturation two-level iridescent structures by vibration-assisted fly cutting
AU - He, Yupeng
AU - Zhou, Tianfeng
AU - Dong, Xiaobin
AU - Liu, Peng
AU - Zhao, Wenxiang
AU - Wang, Xibin
AU - Hu, Yao
AU - Yan, Jiwang
N1 - Funding Information:
This work has been financed by the National Key Basic Research Program of China (No. 2015CB059900) and the National Natural Science Foundation of China (No. 51775046 & No. 51875043). The authors would also like to acknowledge the support from the Fok Ying-Tong Education Foundation for Young Teachers in the Higher Education Institutions of China (No. 151052). All data generated or analyzed are required to reproduce these findings are available and included in this article.
Funding Information:
This work has been financed by the National Key Basic Research Program of China (No. 2015CB059900 ) and the National Natural Science Foundation of China (No. 51775046 & No. 51875043 ). The authors would also like to acknowledge the support from the Fok Ying-Tong Education Foundation for Young Teachers in the Higher Education Institutions of China (No. 151052 ).
Publisher Copyright:
© 2020 The Authors
PY - 2020/8
Y1 - 2020/8
N2 - The submicron-level structured surface induces viewing-angle-dependent iridescence, and has wide applications in multi-color printing, micro-display projection, invisibility cloak technology. In this study, several types of two-level structures, which consist of the first-order micro geometric features corresponding to the pattern shape and the second-order submicron grooves corresponding to the diffraction grating, are designed to directly induce a variety of iridescent patterns based on their shape regulations. To fabricate these two-level iridescent structures with high accuracy in a single step, vibration-assisted fly cutting (VAFC) is proposed. VAFC involves the low-frequency vibration of the workpiece in the vertical direction during the feed in the horizontal direction and the high-speed rotation of the diamond cutting tool. A 3D theoretical model is established for the numerical simulation of the generating process of the iridescent structures and the regulation of the first-order geometric feature by vibration parameters. As the key parameter to the iridescent color, the spacing of the second-order submicron grooves is flexibly controlled by the feed rate. A VAFC platform is developed to fabricate the two-level structures and an optical detection system is setup to test the surface iridescence. Various vivid colors are regulated by the two-level structures with high saturation and uniformity.
AB - The submicron-level structured surface induces viewing-angle-dependent iridescence, and has wide applications in multi-color printing, micro-display projection, invisibility cloak technology. In this study, several types of two-level structures, which consist of the first-order micro geometric features corresponding to the pattern shape and the second-order submicron grooves corresponding to the diffraction grating, are designed to directly induce a variety of iridescent patterns based on their shape regulations. To fabricate these two-level iridescent structures with high accuracy in a single step, vibration-assisted fly cutting (VAFC) is proposed. VAFC involves the low-frequency vibration of the workpiece in the vertical direction during the feed in the horizontal direction and the high-speed rotation of the diamond cutting tool. A 3D theoretical model is established for the numerical simulation of the generating process of the iridescent structures and the regulation of the first-order geometric feature by vibration parameters. As the key parameter to the iridescent color, the spacing of the second-order submicron grooves is flexibly controlled by the feed rate. A VAFC platform is developed to fabricate the two-level structures and an optical detection system is setup to test the surface iridescence. Various vivid colors are regulated by the two-level structures with high saturation and uniformity.
KW - Iridescence
KW - Microstructure
KW - Structural color
KW - Submicron structure
KW - Two-level structure
KW - Vibration-assisted fly cutting
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U2 - 10.1016/j.matdes.2020.108839
DO - 10.1016/j.matdes.2020.108839
M3 - Article
AN - SCOPUS:85086079923
SN - 0261-3069
VL - 193
JO - International Journal of Materials in Engineering Applications
JF - International Journal of Materials in Engineering Applications
M1 - 108839
ER -