IJAT Vol.9 No.1 pp. 43-50
doi: 10.20965/ijat.2015.p0043


Fabrication of Precision Micrograting on Resin Substrate Utilizing Ultrasonic-Assisted Molding

Sergey Bolotov, Ryuichi Kobayashi, Keita Shimada,
Masayoshi Mizutani, and Tsunemoto Kuriyagawa

Graduate School of Engineering, Tohoku University, 6-6-01 Aramaki, Aoba, Aoba-ku, Sendai 980-8579, Japan

March 31, 2014
September 30, 2014
January 5, 2015
ultrasonic, microgroove, molding, heat generation, friction
Molding is an effective and efficient approach to producing highly functional optical elements with complex shapes. However, edge sharpness is a serious problem with molded microstructures. An Ultrasonic-Assisted Molding (UAM) device was developed to improve shape transferability. First, basic experiments showed that UAM induced a maximum temperature increase of 3.2°C for a polycarbonate substrate with a starting temperature of 170°C, and the stick-slip phenomenon was not observed with ultrasonic vibration. Second, UAM and conventional molding simulation models were constructed to compare the transferability of a microgroove; ultrasonic superimposed press movement demonstrated the highest transferability. Finally, micrograting was fabricated using UAM and conventional molding, and the UAMmicrograting had better transferability with a 30-smolding time. Therefore, UAM may be an effective process for reducing molding time.
Cite this article as:
S. Bolotov, R. Kobayashi, K. Shimada, M. Mizutani, and T. Kuriyagawa, “Fabrication of Precision Micrograting on Resin Substrate Utilizing Ultrasonic-Assisted Molding,” Int. J. Automation Technol., Vol.9 No.1, pp. 43-50, 2015.
Data files:
  1. [1] C. Lin, Y. Fang, and P. Yang, “Optical film with microstructures array for slim-type backlight applications,” Optik – Int. J. for Light and Electron Optics, Vol.122, Issue 13, pp. 1169-1173.6, 2010.
  2. [2] L. Thomas, N. Johan, and M. Gyorgy, “Silicon microstructures for high-speed and high-sensitivity protein identifications,” J. of Chromatography B: Biomedical Sciences and Applications, Vol.752, Issue 2, pp. 217-232, 2001.
  3. [3] J. Yan, T. Oowada, T. Zhou, and T. Kuriyagawa, “Precision machining of microstructures on electroless-plated NiP surface for molding glass components,” J. of Materials Processing Technology, Vol.209, Isseu 10, pp. 4802-4808, 2009.
  4. [4] J. Yan, K. Maekawa, J. Tamaki, and T. Kuriyagawa, “Micro grooving on single-crystal germanium for infrared Fresnel lenses,” J. of Micromechanics and Microengineering, Vol.10, pp. 1925-1931, 2005.
  5. [5] S. Hava and M. Auslender, “Design and analysis of low-reflection grating microstructures for a solar energy absorber,” Solar Energy Materials and Solar Cells, Vol.61, Issue 2, pp. 143-151, 2000.
  6. [6] C. Li, Y. Fang, and M. Cheng, “Prism-pattern design of an LCD light guide plate using a neural-network optical model,” Optik – Int. J. for Light and Electron Optics, Vol.121, Issue 24, pp. 2245-2249, 2010.
  7. [7] T. Zhou, J. Yan, J. Masuda, and T. Kuriyagawa, “Investigation on the viscoelasticity of optical glass in ultraprecision lens molding process,” J. of materials processing technology, Vol.209, pp. 4484-4489, 2009.
  8. [8] T. Zhou, J. Yan, J. Masuda, T. Oowada, and T. Kuriyagawa, “Investigation on shape transferability in ultraprecision glass molding press for microgroove,” Precision Engeneering, Vol.35, Issue 2, pp. 214-220, 2011.
  9. [9] R. Kobayashi, T. Zhou, K. Shimada, M. Mizutani, and T. Kuriyagawa, “Ultraprecision glass molding press for microgrooves with different pich sizes,” Int. J. of Automation Technology, Vol.7, No.6, pp. 678-685, 2013.
  10. [10] CH. Lin and R. Chen, “Ultrasonic nanoimprint lithography: a new approach to nanopaterning,” J. of Micro/Nanolithography, Mems, and MOEMS, Vol.5, Issue 1, 011003, 2006.
  11. [11] H. Mekaru, H. Goto, and M. Takahashi, “Development of ultrasonic micro hot embossing technology,” Microelectric Engeneering, Vol.84, pp. 1282-1287, 2007.
  12. [12] YH. Tsai, JC. Heng, LC. Yin, and C. Hung, “Ultrasonic vibrationassisted optical glass hot embossing process,” The Int. J. of Advanced Manufacturing Technology, Vol.60, pp. 1207-1213, 2012.
  13. [13] S. Rendon et al., “Ultrasonic-assisted molding of precisely-shaped articles and methods,” U.S. Patent, 2013/0345384 A1, Dec. 26, 2013.
  14. [14] “Ultrasonic assisted manufacturing,” the Japan Society for Technology of Plasticity, Morikita-Shuppan Ltd., pp. 198-199, 2004.
  15. [15] D. Grewell and A. Banatar, “Welding of Plastics,” Intern. Polymer Processing XXII, pp. 43-60, 2007.
  16. [16] “Heat transfer engeneering,” the Japan Society of Mechanical Engeneering, JSME, p. 49, 2005.
  17. [17] R. Klein, “Welding of Plastics,” Wiley-VCH Verlag GmbH & Co. KGaA., p. 27, 2011.
  18. [18] D. Ferry, “Viscoelastic properties of polymers,” Toukyo Kagaku Doujin, p. 405, 1960.

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